217 files changed, 3845 insertions, 3011 deletions

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index ef9661886112..2b78014a124a 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -132,21 +132,19 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 	options = tmp_options;
 
 	while ((p = strsep(&options, ",")) != NULL) {
-		int token;
+		int token, r;
 		if (!*p)
 			continue;
 		token = match_token(p, tokens, args);
-		if (token < Opt_uname) {
-			int r = match_int(&args[0], &option);
+		switch (token) {
+		case Opt_debug:
+			r = match_int(&args[0], &option);
 			if (r < 0) {
 				P9_DPRINTK(P9_DEBUG_ERROR,
-					"integer field, but no integer?\n");
+					   "integer field, but no integer?\n");
 				ret = r;
 				continue;
 			}
-		}
-		switch (token) {
-		case Opt_debug:
 			v9ses->debug = option;
 #ifdef CONFIG_NET_9P_DEBUG
 			p9_debug_level = option;
@@ -154,12 +152,33 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 			break;
 
 		case Opt_dfltuid:
+			r = match_int(&args[0], &option);
+			if (r < 0) {
+				P9_DPRINTK(P9_DEBUG_ERROR,
+					   "integer field, but no integer?\n");
+				ret = r;
+				continue;
+			}
 			v9ses->dfltuid = option;
 			break;
 		case Opt_dfltgid:
+			r = match_int(&args[0], &option);
+			if (r < 0) {
+				P9_DPRINTK(P9_DEBUG_ERROR,
+					   "integer field, but no integer?\n");
+				ret = r;
+				continue;
+			}
 			v9ses->dfltgid = option;
 			break;
 		case Opt_afid:
+			r = match_int(&args[0], &option);
+			if (r < 0) {
+				P9_DPRINTK(P9_DEBUG_ERROR,
+					   "integer field, but no integer?\n");
+				ret = r;
+				continue;
+			}
 			v9ses->afid = option;
 			break;
 		case Opt_uname:
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index 46ce357ca1ab..410ffd6ceb5f 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -54,9 +54,9 @@ extern struct kmem_cache *v9fs_inode_cache;
 
 struct inode *v9fs_alloc_inode(struct super_block *sb);
 void v9fs_destroy_inode(struct inode *inode);
-struct inode *v9fs_get_inode(struct super_block *sb, int mode);
+struct inode *v9fs_get_inode(struct super_block *sb, int mode, dev_t);
 int v9fs_init_inode(struct v9fs_session_info *v9ses,
-		    struct inode *inode, int mode);
+		    struct inode *inode, int mode, dev_t);
 void v9fs_evict_inode(struct inode *inode);
 ino_t v9fs_qid2ino(struct p9_qid *qid);
 void v9fs_stat2inode(struct p9_wstat *, struct inode *, struct super_block *);
@@ -83,4 +83,6 @@ static inline void v9fs_invalidate_inode_attr(struct inode *inode)
 	v9inode->cache_validity |= V9FS_INO_INVALID_ATTR;
 	return;
 }
+
+int v9fs_open_to_dotl_flags(int flags);
 #endif
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 9c2bdda5cd9d..598fff1a54e5 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -165,9 +165,8 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
 		}
 		while (rdir->head < rdir->tail) {
 			p9stat_init(&st);
-			err = p9stat_read(rdir->buf + rdir->head,
-						rdir->tail - rdir->head, &st,
-						fid->clnt->proto_version);
+			err = p9stat_read(fid->clnt, rdir->buf + rdir->head,
+					  rdir->tail - rdir->head, &st);
 			if (err) {
 				P9_DPRINTK(P9_DEBUG_VFS, "returned %d\n", err);
 				err = -EIO;
@@ -231,7 +230,7 @@ static int v9fs_dir_readdir_dotl(struct file *filp, void *dirent,
 	while (err == 0) {
 		if (rdir->tail == rdir->head) {
 			err = p9_client_readdir(fid, rdir->buf, buflen,
-								filp->f_pos);
+						filp->f_pos);
 			if (err <= 0)
 				goto unlock_and_exit;
 
@@ -241,10 +240,9 @@ static int v9fs_dir_readdir_dotl(struct file *filp, void *dirent,
 
 		while (rdir->head < rdir->tail) {
 
-			err = p9dirent_read(rdir->buf + rdir->head,
-						rdir->tail - rdir->head,
-						&curdirent,
-						fid->clnt->proto_version);
+			err = p9dirent_read(fid->clnt, rdir->buf + rdir->head,
+					    rdir->tail - rdir->head,
+					    &curdirent);
 			if (err < 0) {
 				P9_DPRINTK(P9_DEBUG_VFS, "returned %d\n", err);
 				err = -EIO;
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 3c173fcc2c5a..62857a810a79 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -65,7 +65,7 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 	v9inode = V9FS_I(inode);
 	v9ses = v9fs_inode2v9ses(inode);
 	if (v9fs_proto_dotl(v9ses))
-		omode = file->f_flags;
+		omode = v9fs_open_to_dotl_flags(file->f_flags);
 	else
 		omode = v9fs_uflags2omode(file->f_flags,
 					v9fs_proto_dotu(v9ses));
@@ -169,7 +169,18 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl)
 
 	/* convert posix lock to p9 tlock args */
 	memset(&flock, 0, sizeof(flock));
-	flock.type = fl->fl_type;
+	/* map the lock type */
+	switch (fl->fl_type) {
+	case F_RDLCK:
+		flock.type = P9_LOCK_TYPE_RDLCK;
+		break;
+	case F_WRLCK:
+		flock.type = P9_LOCK_TYPE_WRLCK;
+		break;
+	case F_UNLCK:
+		flock.type = P9_LOCK_TYPE_UNLCK;
+		break;
+	}
 	flock.start = fl->fl_start;
 	if (fl->fl_end == OFFSET_MAX)
 		flock.length = 0;
@@ -245,7 +256,7 @@ static int v9fs_file_getlock(struct file *filp, struct file_lock *fl)
 
 	/* convert posix lock to p9 tgetlock args */
 	memset(&glock, 0, sizeof(glock));
-	glock.type = fl->fl_type;
+	glock.type  = P9_LOCK_TYPE_UNLCK;
 	glock.start = fl->fl_start;
 	if (fl->fl_end == OFFSET_MAX)
 		glock.length = 0;
@@ -257,17 +268,26 @@ static int v9fs_file_getlock(struct file *filp, struct file_lock *fl)
 	res = p9_client_getlock_dotl(fid, &glock);
 	if (res < 0)
 		return res;
-	if (glock.type != F_UNLCK) {
-		fl->fl_type = glock.type;
+	/* map 9p lock type to os lock type */
+	switch (glock.type) {
+	case P9_LOCK_TYPE_RDLCK:
+		fl->fl_type = F_RDLCK;
+		break;
+	case P9_LOCK_TYPE_WRLCK:
+		fl->fl_type = F_WRLCK;
+		break;
+	case P9_LOCK_TYPE_UNLCK:
+		fl->fl_type = F_UNLCK;
+		break;
+	}
+	if (glock.type != P9_LOCK_TYPE_UNLCK) {
 		fl->fl_start = glock.start;
 		if (glock.length == 0)
 			fl->fl_end = OFFSET_MAX;
 		else
 			fl->fl_end = glock.start + glock.length - 1;
 		fl->fl_pid = glock.proc_id;
-	} else
-		fl->fl_type = F_UNLCK;
-
+	}
 	return res;
 }
 
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 8bb5507e822f..b5a1076aaa6c 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -95,15 +95,18 @@ static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode)
 /**
  * p9mode2unixmode- convert plan9 mode bits to unix mode bits
  * @v9ses: v9fs session information
- * @mode: mode to convert
+ * @stat: p9_wstat from which mode need to be derived
+ * @rdev: major number, minor number in case of device files.
  *
  */
-
-static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode)
+static int p9mode2unixmode(struct v9fs_session_info *v9ses,
+			   struct p9_wstat *stat, dev_t *rdev)
 {
 	int res;
+	int mode = stat->mode;
 
-	res = mode & 0777;
+	res = mode & S_IALLUGO;
+	*rdev = 0;
 
 	if ((mode & P9_DMDIR) == P9_DMDIR)
 		res |= S_IFDIR;
@@ -116,9 +119,26 @@ static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode)
 		 && (v9ses->nodev == 0))
 		res |= S_IFIFO;
 	else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses))
-		 && (v9ses->nodev == 0))
-		res |= S_IFBLK;
-	else
+		 && (v9ses->nodev == 0)) {
+		char type = 0, ext[32];
+		int major = -1, minor = -1;
+
+		strncpy(ext, stat->extension, sizeof(ext));
+		sscanf(ext, "%c %u %u", &type, &major, &minor);
+		switch (type) {
+		case 'c':
+			res |= S_IFCHR;
+			break;
+		case 'b':
+			res |= S_IFBLK;
+			break;
+		default:
+			P9_DPRINTK(P9_DEBUG_ERROR,
+				"Unknown special type %c %s\n", type,
+				stat->extension);
+		};
+		*rdev = MKDEV(major, minor);
+	} else
 		res |= S_IFREG;
 
 	if (v9fs_proto_dotu(v9ses)) {
@@ -131,7 +151,6 @@ static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode)
 		if ((mode & P9_DMSETVTX) == P9_DMSETVTX)
 			res |= S_ISVTX;
 	}
-
 	return res;
 }
 
@@ -242,13 +261,13 @@ void v9fs_destroy_inode(struct inode *inode)
 }
 
 int v9fs_init_inode(struct v9fs_session_info *v9ses,
-		    struct inode *inode, int mode)
+		    struct inode *inode, int mode, dev_t rdev)
 {
 	int err = 0;
 
 	inode_init_owner(inode, NULL, mode);
 	inode->i_blocks = 0;
-	inode->i_rdev = 0;
+	inode->i_rdev = rdev;
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 	inode->i_mapping->a_ops = &v9fs_addr_operations;
 
@@ -259,10 +278,8 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses,
 	case S_IFSOCK:
 		if (v9fs_proto_dotl(v9ses)) {
 			inode->i_op = &v9fs_file_inode_operations_dotl;
-			inode->i_fop = &v9fs_file_operations_dotl;
 		} else if (v9fs_proto_dotu(v9ses)) {
 			inode->i_op = &v9fs_file_inode_operations;
-			inode->i_fop = &v9fs_file_operations;
 		} else {
 			P9_DPRINTK(P9_DEBUG_ERROR,
 				   "special files without extended mode\n");
@@ -335,7 +352,7 @@ error:
  *
  */
 
-struct inode *v9fs_get_inode(struct super_block *sb, int mode)
+struct inode *v9fs_get_inode(struct super_block *sb, int mode, dev_t rdev)
 {
 	int err;
 	struct inode *inode;
@@ -348,7 +365,7 @@ struct inode *v9fs_get_inode(struct super_block *sb, int mode)
 		P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n");
 		return ERR_PTR(-ENOMEM);
 	}
-	err = v9fs_init_inode(v9ses, inode, mode);
+	err = v9fs_init_inode(v9ses, inode, mode, rdev);
 	if (err) {
 		iput(inode);
 		return ERR_PTR(err);
@@ -435,11 +452,12 @@ void v9fs_evict_inode(struct inode *inode)
 static int v9fs_test_inode(struct inode *inode, void *data)
 {
 	int umode;
+	dev_t rdev;
 	struct v9fs_inode *v9inode = V9FS_I(inode);
 	struct p9_wstat *st = (struct p9_wstat *)data;
 	struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode);
 
-	umode = p9mode2unixmode(v9ses, st->mode);
+	umode = p9mode2unixmode(v9ses, st, &rdev);
 	/* don't match inode of different type */
 	if ((inode->i_mode & S_IFMT) != (umode & S_IFMT))
 		return 0;
@@ -473,6 +491,7 @@ static struct inode *v9fs_qid_iget(struct super_block *sb,
 				   struct p9_wstat *st,
 				   int new)
 {
+	dev_t rdev;
 	int retval, umode;
 	unsigned long i_ino;
 	struct inode *inode;
@@ -496,8 +515,8 @@ static struct inode *v9fs_qid_iget(struct super_block *sb,
 	 * later.
 	 */
 	inode->i_ino = i_ino;
-	umode = p9mode2unixmode(v9ses, st->mode);
-	retval = v9fs_init_inode(v9ses, inode, umode);
+	umode = p9mode2unixmode(v9ses, st, &rdev);
+	retval = v9fs_init_inode(v9ses, inode, umode, rdev);
 	if (retval)
 		goto error;
 
@@ -532,6 +551,19 @@ v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
 }
 
 /**
+ * v9fs_at_to_dotl_flags- convert Linux specific AT flags to
+ * plan 9 AT flag.
+ * @flags: flags to convert
+ */
+static int v9fs_at_to_dotl_flags(int flags)
+{
+	int rflags = 0;
+	if (flags & AT_REMOVEDIR)
+		rflags |= P9_DOTL_AT_REMOVEDIR;
+	return rflags;
+}
+
+/**
  * v9fs_remove - helper function to remove files and directories
  * @dir: directory inode that is being deleted
  * @dentry:  dentry that is being deleted
@@ -558,7 +590,8 @@ static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags)
 		return retval;
 	}
 	if (v9fs_proto_dotl(v9ses))
-		retval = p9_client_unlinkat(dfid, dentry->d_name.name, flags);
+		retval = p9_client_unlinkat(dfid, dentry->d_name.name,
+					    v9fs_at_to_dotl_flags(flags));
 	if (retval == -EOPNOTSUPP) {
 		/* Try the one based on path */
 		v9fid = v9fs_fid_clone(dentry);
@@ -645,13 +678,11 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
 		P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err);
 		goto error;
 	}
-	d_instantiate(dentry, inode);
 	err = v9fs_fid_add(dentry, fid);
 	if (err < 0)
 		goto error;
-
+	d_instantiate(dentry, inode);
 	return ofid;
-
 error:
 	if (ofid)
 		p9_client_clunk(ofid);
@@ -792,6 +823,7 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
 				      struct nameidata *nameidata)
 {
+	struct dentry *res;
 	struct super_block *sb;
 	struct v9fs_session_info *v9ses;
 	struct p9_fid *dfid, *fid;
@@ -823,22 +855,35 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
 
 		return ERR_PTR(result);
 	}
-
-	inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
+	/*
+	 * Make sure we don't use a wrong inode due to parallel
+	 * unlink. For cached mode create calls request for new
+	 * inode. But with cache disabled, lookup should do this.
+	 */
+	if (v9ses->cache)
+		inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
+	else
+		inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
 	if (IS_ERR(inode)) {
 		result = PTR_ERR(inode);
 		inode = NULL;
 		goto error;
 	}
-
 	result = v9fs_fid_add(dentry, fid);
 	if (result < 0)
 		goto error_iput;
-
 inst_out:
-	d_add(dentry, inode);
-	return NULL;
-
+	/*
+	 * If we had a rename on the server and a parallel lookup
+	 * for the new name, then make sure we instantiate with
+	 * the new name. ie look up for a/b, while on server somebody
+	 * moved b under k and client parallely did a lookup for
+	 * k/b.
+	 */
+	res = d_materialise_unique(dentry, inode);
+	if (!IS_ERR(res))
+		return res;
+	result = PTR_ERR(res);
 error_iput:
 	iput(inode);
 error:
@@ -1002,7 +1047,7 @@ v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 		return PTR_ERR(st);
 
 	v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb);
-		generic_fillattr(dentry->d_inode, stat);
+	generic_fillattr(dentry->d_inode, stat);
 
 	p9stat_free(st);
 	kfree(st);
@@ -1086,6 +1131,7 @@ void
 v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode,
 	struct super_block *sb)
 {
+	mode_t mode;
 	char ext[32];
 	char tag_name[14];
 	unsigned int i_nlink;
@@ -1121,31 +1167,9 @@ v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode,
 				inode->i_nlink = i_nlink;
 		}
 	}
-	inode->i_mode = p9mode2unixmode(v9ses, stat->mode);
-	if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) {
-		char type = 0;
-		int major = -1;
-		int minor = -1;
-
-		strncpy(ext, stat->extension, sizeof(ext));
-		sscanf(ext, "%c %u %u", &type, &major, &minor);
-		switch (type) {
-		case 'c':
-			inode->i_mode &= ~S_IFBLK;
-			inode->i_mode |= S_IFCHR;
-			break;
-		case 'b':
-			break;
-		default:
-			P9_DPRINTK(P9_DEBUG_ERROR,
-				"Unknown special type %c %s\n", type,
-				stat->extension);
-		};
-		inode->i_rdev = MKDEV(major, minor);
-		init_special_inode(inode, inode->i_mode, inode->i_rdev);
-	} else
-		inode->i_rdev = 0;
-
+	mode = stat->mode & S_IALLUGO;
+	mode |= inode->i_mode & ~S_IALLUGO;
+	inode->i_mode = mode;
 	i_size_write(inode, stat->length);
 
 	/* not real number of blocks, but 512 byte ones ... */
@@ -1411,6 +1435,8 @@ v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
 
 int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode)
 {
+	int umode;
+	dev_t rdev;
 	loff_t i_size;
 	struct p9_wstat *st;
 	struct v9fs_session_info *v9ses;
@@ -1419,6 +1445,12 @@ int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode)
 	st = p9_client_stat(fid);
 	if (IS_ERR(st))
 		return PTR_ERR(st);
+	/*
+	 * Don't update inode if the file type is different
+	 */
+	umode = p9mode2unixmode(v9ses, st, &rdev);
+	if ((inode->i_mode & S_IFMT) != (umode & S_IFMT))
+		goto out;
 
 	spin_lock(&inode->i_lock);
 	/*
@@ -1430,6 +1462,7 @@ int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode)
 	if (v9ses->cache)
 		inode->i_size = i_size;
 	spin_unlock(&inode->i_lock);
+out:
 	p9stat_free(st);
 	kfree(st);
 	return 0;
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index b6c8ed205192..aded79fcd5cf 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -153,7 +153,8 @@ static struct inode *v9fs_qid_iget_dotl(struct super_block *sb,
 	 * later.
 	 */
 	inode->i_ino = i_ino;
-	retval = v9fs_init_inode(v9ses, inode, st->st_mode);
+	retval = v9fs_init_inode(v9ses, inode,
+				 st->st_mode, new_decode_dev(st->st_rdev));
 	if (retval)
 		goto error;
 
@@ -190,6 +191,58 @@ v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
 	return inode;
 }
 
+struct dotl_openflag_map {
+	int open_flag;
+	int dotl_flag;
+};
+
+static int v9fs_mapped_dotl_flags(int flags)
+{
+	int i;
+	int rflags = 0;
+	struct dotl_openflag_map dotl_oflag_map[] = {
+		{ O_CREAT,	P9_DOTL_CREATE },
+		{ O_EXCL,	P9_DOTL_EXCL },
+		{ O_NOCTTY,	P9_DOTL_NOCTTY },
+		{ O_TRUNC,	P9_DOTL_TRUNC },
+		{ O_APPEND,	P9_DOTL_APPEND },
+		{ O_NONBLOCK,	P9_DOTL_NONBLOCK },
+		{ O_DSYNC,	P9_DOTL_DSYNC },
+		{ FASYNC,	P9_DOTL_FASYNC },
+		{ O_DIRECT,	P9_DOTL_DIRECT },
+		{ O_LARGEFILE,	P9_DOTL_LARGEFILE },
+		{ O_DIRECTORY,	P9_DOTL_DIRECTORY },
+		{ O_NOFOLLOW,	P9_DOTL_NOFOLLOW },
+		{ O_NOATIME,	P9_DOTL_NOATIME },
+		{ O_CLOEXEC,	P9_DOTL_CLOEXEC },
+		{ O_SYNC,	P9_DOTL_SYNC},
+	};
+	for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
+		if (flags & dotl_oflag_map[i].open_flag)
+			rflags |= dotl_oflag_map[i].dotl_flag;
+	}
+	return rflags;
+}
+
+/**
+ * v9fs_open_to_dotl_flags- convert Linux specific open flags to
+ * plan 9 open flag.
+ * @flags: flags to convert
+ */
+int v9fs_open_to_dotl_flags(int flags)
+{
+	int rflags = 0;
+
+	/*
+	 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
+	 * and P9_DOTL_NOACCESS
+	 */
+	rflags |= flags & O_ACCMODE;
+	rflags |= v9fs_mapped_dotl_flags(flags);
+
+	return rflags;
+}
+
 /**
  * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
  * @dir: directory inode that is being created
@@ -258,7 +311,8 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
 			   "Failed to get acl values in creat %d\n", err);
 		goto error;
 	}
-	err = p9_client_create_dotl(ofid, name, flags, mode, gid, &qid);
+	err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
+				    mode, gid, &qid);
 	if (err < 0) {
 		P9_DPRINTK(P9_DEBUG_VFS,
 				"p9_client_open_dotl failed in creat %d\n",
@@ -281,10 +335,10 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
 		P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err);
 		goto error;
 	}
-	d_instantiate(dentry, inode);
 	err = v9fs_fid_add(dentry, fid);
 	if (err < 0)
 		goto error;
+	d_instantiate(dentry, inode);
 
 	/* Now set the ACL based on the default value */
 	v9fs_set_create_acl(dentry, &dacl, &pacl);
@@ -403,10 +457,10 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
 				err);
 			goto error;
 		}
-		d_instantiate(dentry, inode);
 		err = v9fs_fid_add(dentry, fid);
 		if (err < 0)
 			goto error;
+		d_instantiate(dentry, inode);
 		fid = NULL;
 	} else {
 		/*
@@ -414,7 +468,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
 		 * inode with stat. We need to get an inode
 		 * so that we can set the acl with dentry
 		 */
-		inode = v9fs_get_inode(dir->i_sb, mode);
+		inode = v9fs_get_inode(dir->i_sb, mode, 0);
 		if (IS_ERR(inode)) {
 			err = PTR_ERR(inode);
 			goto error;
@@ -540,6 +594,7 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
 void
 v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
 {
+	mode_t mode;
 	struct v9fs_inode *v9inode = V9FS_I(inode);
 
 	if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
@@ -552,11 +607,10 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
 		inode->i_uid = stat->st_uid;
 		inode->i_gid = stat->st_gid;
 		inode->i_nlink = stat->st_nlink;
-		inode->i_mode = stat->st_mode;
-		inode->i_rdev = new_decode_dev(stat->st_rdev);
 
-		if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode)))
-			init_special_inode(inode, inode->i_mode, inode->i_rdev);
+		mode = stat->st_mode & S_IALLUGO;
+		mode |= inode->i_mode & ~S_IALLUGO;
+		inode->i_mode = mode;
 
 		i_size_write(inode, stat->st_size);
 		inode->i_blocks = stat->st_blocks;
@@ -657,14 +711,14 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
 					err);
 			goto error;
 		}
-		d_instantiate(dentry, inode);
 		err = v9fs_fid_add(dentry, fid);
 		if (err < 0)
 			goto error;
+		d_instantiate(dentry, inode);
 		fid = NULL;
 	} else {
 		/* Not in cached mode. No need to populate inode with stat */
-		inode = v9fs_get_inode(dir->i_sb, S_IFLNK);
+		inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0);
 		if (IS_ERR(inode)) {
 			err = PTR_ERR(inode);
 			goto error;
@@ -810,17 +864,17 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
 				err);
 			goto error;
 		}
-		d_instantiate(dentry, inode);
 		err = v9fs_fid_add(dentry, fid);
 		if (err < 0)
 			goto error;
+		d_instantiate(dentry, inode);
 		fid = NULL;
 	} else {
 		/*
 		 * Not in cached mode. No need to populate inode with stat.
 		 * socket syscall returns a fd, so we need instantiate
 		 */
-		inode = v9fs_get_inode(dir->i_sb, mode);
+		inode = v9fs_get_inode(dir->i_sb, mode, rdev);
 		if (IS_ERR(inode)) {
 			err = PTR_ERR(inode);
 			goto error;
@@ -886,6 +940,11 @@ int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
 	st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
 	if (IS_ERR(st))
 		return PTR_ERR(st);
+	/*
+	 * Don't update inode if the file type is different
+	 */
+	if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT))
+		goto out;
 
 	spin_lock(&inode->i_lock);
 	/*
@@ -897,6 +956,7 @@ int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
 	if (v9ses->cache)
 		inode->i_size = i_size;
 	spin_unlock(&inode->i_lock);
+out:
 	kfree(st);
 	return 0;
 }
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index feef6cdc1fd2..c70251d47ed1 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -149,7 +149,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
 	else
 		sb->s_d_op = &v9fs_dentry_operations;
 
-	inode = v9fs_get_inode(sb, S_IFDIR | mode);
+	inode = v9fs_get_inode(sb, S_IFDIR | mode, 0);
 	if (IS_ERR(inode)) {
 		retval = PTR_ERR(inode);
 		goto release_sb;
diff --git a/fs/attr.c b/fs/attr.c
index 538e27959d3f..7ee7ba488313 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -13,6 +13,7 @@
 #include <linux/fsnotify.h>
 #include <linux/fcntl.h>
 #include <linux/security.h>
+#include <linux/evm.h>
 
 /**
  * inode_change_ok - check if attribute changes to an inode are allowed
@@ -237,8 +238,10 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
 	else
 		error = simple_setattr(dentry, attr);
 
-	if (!error)
+	if (!error) {
 		fsnotify_change(dentry, ia_valid);
+		evm_inode_post_setattr(dentry, ia_valid);
+	}
 
 	return error;
 }
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 475f9c597cb7..326dc08d3e3f 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -39,27 +39,17 @@
 
 /* #define DEBUG */
 
-#ifdef DEBUG
-#define DPRINTK(fmt, args...)				\
-do {							\
-	printk(KERN_DEBUG "pid %d: %s: " fmt "\n",	\
-		current->pid, __func__, ##args);	\
-} while (0)
-#else
-#define DPRINTK(fmt, args...) do {} while (0)
-#endif
-
-#define AUTOFS_WARN(fmt, args...)			\
-do {							\
+#define DPRINTK(fmt, ...)				\
+	pr_debug("pid %d: %s: " fmt "\n",		\
+		current->pid, __func__, ##__VA_ARGS__)
+
+#define AUTOFS_WARN(fmt, ...)				\
 	printk(KERN_WARNING "pid %d: %s: " fmt "\n",	\
-		current->pid, __func__, ##args);	\
-} while (0)
+		current->pid, __func__, ##__VA_ARGS__)
 
-#define AUTOFS_ERROR(fmt, args...)			\
-do {							\
+#define AUTOFS_ERROR(fmt, ...)				\
 	printk(KERN_ERR "pid %d: %s: " fmt "\n",	\
-		current->pid, __func__, ##args);	\
-} while (0)
+		current->pid, __func__, ##__VA_ARGS__)
 
 /* Unified info structure.  This is pointed to by both the dentry and
    inode structures.  Each file in the filesystem has an instance of this
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 25435987d6ae..e1fbdeef85db 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -104,7 +104,7 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
 	size_t pktsz;
 
 	DPRINTK("wait id = 0x%08lx, name = %.*s, type=%d",
-		wq->wait_queue_token, wq->name.len, wq->name.name, type);
+		(unsigned long) wq->wait_queue_token, wq->name.len, wq->name.name, type);
 
 	memset(&pkt,0,sizeof pkt); /* For security reasons */
 
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 54b8c28bebc8..720d885e8dca 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -474,17 +474,22 @@ befs_follow_link(struct dentry *dentry, struct nameidata *nd)
 		befs_data_stream *data = &befs_ino->i_data.ds;
 		befs_off_t len = data->size;
 
-		befs_debug(sb, "Follow long symlink");
-
-		link = kmalloc(len, GFP_NOFS);
-		if (!link) {
-			link = ERR_PTR(-ENOMEM);
-		} else if (befs_read_lsymlink(sb, data, link, len) != len) {
-			kfree(link);
-			befs_error(sb, "Failed to read entire long symlink");
+		if (len == 0) {
+			befs_error(sb, "Long symlink with illegal length");
 			link = ERR_PTR(-EIO);
 		} else {
-			link[len - 1] = '\0';
+			befs_debug(sb, "Follow long symlink");
+
+			link = kmalloc(len, GFP_NOFS);
+			if (!link) {
+				link = ERR_PTR(-ENOMEM);
+			} else if (befs_read_lsymlink(sb, data, link, len) != len) {
+				kfree(link);
+				befs_error(sb, "Failed to read entire long symlink");
+				link = ERR_PTR(-EIO);
+			} else {
+				link[len - 1] = '\0';
+			}
 		}
 	} else {
 		link = befs_ino->i_data.symlink;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index ff77262e887c..95f786ec7f08 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1429,6 +1429,11 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
 		WARN_ON_ONCE(bdev->bd_holders);
 		sync_blockdev(bdev);
 		kill_bdev(bdev);
+		/* ->release can cause the old bdi to disappear,
+		 * so must switch it out first
+		 */
+		bdev_inode_switch_bdi(bdev->bd_inode,
+					&default_backing_dev_info);
 	}
 	if (bdev->bd_contains == bdev) {
 		if (disk->fops->release)
@@ -1442,8 +1447,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
 		disk_put_part(bdev->bd_part);
 		bdev->bd_part = NULL;
 		bdev->bd_disk = NULL;
-		bdev_inode_switch_bdi(bdev->bd_inode,
-					&default_backing_dev_info);
 		if (bdev != bdev->bd_contains)
 			victim = bdev->bd_contains;
 		bdev->bd_contains = NULL;
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 502b9e988679..d9f99a16edd6 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -176,7 +176,11 @@ static inline u64 btrfs_ino(struct inode *inode)
 {
 	u64 ino = BTRFS_I(inode)->location.objectid;
 
-	if (ino <= BTRFS_FIRST_FREE_OBJECTID)
+	/*
+	 * !ino: btree_inode
+	 * type == BTRFS_ROOT_ITEM_KEY: subvol dir
+	 */
+	if (!ino || BTRFS_I(inode)->location.type == BTRFS_ROOT_ITEM_KEY)
 		ino = inode->i_ino;
 	return ino;
 }
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 0469263e327e..03912c5c6f49 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1415,17 +1415,15 @@ void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits)		\
 static inline u##bits btrfs_##name(struct extent_buffer *eb)		\
 {									\
-	type *p = kmap_atomic(eb->first_page, KM_USER0);		\
+	type *p = page_address(eb->first_page);				\
 	u##bits res = le##bits##_to_cpu(p->member);			\
-	kunmap_atomic(p, KM_USER0);					\
 	return res;							\
 }									\
 static inline void btrfs_set_##name(struct extent_buffer *eb,		\
 				    u##bits val)			\
 {									\
-	type *p = kmap_atomic(eb->first_page, KM_USER0);		\
+	type *p = page_address(eb->first_page);				\
 	p->member = cpu_to_le##bits(val);				\
-	kunmap_atomic(p, KM_USER0);					\
 }
 
 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits)		\
@@ -2367,8 +2365,8 @@ static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans,
 int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
 int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
 int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
-int btrfs_drop_snapshot(struct btrfs_root *root,
-			struct btrfs_block_rsv *block_rsv, int update_ref);
+void btrfs_drop_snapshot(struct btrfs_root *root,
+			 struct btrfs_block_rsv *block_rsv, int update_ref);
 int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
 			struct btrfs_root *root,
 			struct extent_buffer *node,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 66bac226944e..f5be06a2462f 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1782,6 +1782,9 @@ static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
 
 
 		for (i = 0; i < multi->num_stripes; i++, stripe++) {
+			if (!stripe->dev->can_discard)
+				continue;
+
 			ret = btrfs_issue_discard(stripe->dev->bdev,
 						  stripe->physical,
 						  stripe->length);
@@ -1789,11 +1792,16 @@ static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
 				discarded_bytes += stripe->length;
 			else if (ret != -EOPNOTSUPP)
 				break;
+
+			/*
+			 * Just in case we get back EOPNOTSUPP for some reason,
+			 * just ignore the return value so we don't screw up
+			 * people calling discard_extent.
+			 */
+			ret = 0;
 		}
 		kfree(multi);
 	}
-	if (discarded_bytes && ret == -EOPNOTSUPP)
-		ret = 0;
 
 	if (actual_bytes)
 		*actual_bytes = discarded_bytes;
@@ -6269,8 +6277,8 @@ static noinline int walk_up_tree(struct btrfs_trans_handle *trans,
  * also make sure backrefs for the shared block and all lower level
  * blocks are properly updated.
  */
-int btrfs_drop_snapshot(struct btrfs_root *root,
-			struct btrfs_block_rsv *block_rsv, int update_ref)
+void btrfs_drop_snapshot(struct btrfs_root *root,
+			 struct btrfs_block_rsv *block_rsv, int update_ref)
 {
 	struct btrfs_path *path;
 	struct btrfs_trans_handle *trans;
@@ -6283,13 +6291,16 @@ int btrfs_drop_snapshot(struct btrfs_root *root,
 	int level;
 
 	path = btrfs_alloc_path();
-	if (!path)
-		return -ENOMEM;
+	if (!path) {
+		err = -ENOMEM;
+		goto out;
+	}
 
 	wc = kzalloc(sizeof(*wc), GFP_NOFS);
 	if (!wc) {
 		btrfs_free_path(path);
-		return -ENOMEM;
+		err = -ENOMEM;
+		goto out;
 	}
 
 	trans = btrfs_start_transaction(tree_root, 0);
@@ -6318,7 +6329,7 @@ int btrfs_drop_snapshot(struct btrfs_root *root,
 		path->lowest_level = 0;
 		if (ret < 0) {
 			err = ret;
-			goto out;
+			goto out_free;
 		}
 		WARN_ON(ret > 0);
 
@@ -6425,11 +6436,14 @@ int btrfs_drop_snapshot(struct btrfs_root *root,
 		free_extent_buffer(root->commit_root);
 		kfree(root);
 	}
-out:
+out_free:
 	btrfs_end_transaction_throttle(trans, tree_root);
 	kfree(wc);
 	btrfs_free_path(path);
-	return err;
+out:
+	if (err)
+		btrfs_std_error(root->fs_info, err);
+	return;
 }
 
 /*
@@ -6720,6 +6734,10 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
 	struct btrfs_space_info *space_info;
 	struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices;
 	struct btrfs_device *device;
+	u64 min_free;
+	u64 dev_min = 1;
+	u64 dev_nr = 0;
+	int index;
 	int full = 0;
 	int ret = 0;
 
@@ -6729,8 +6747,10 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
 	if (!block_group)
 		return -1;
 
+	min_free = btrfs_block_group_used(&block_group->item);
+
 	/* no bytes used, we're good */
-	if (!btrfs_block_group_used(&block_group->item))
+	if (!min_free)
 		goto out;
 
 	space_info = block_group->space_info;
@@ -6746,10 +6766,9 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
 	 * all of the extents from this block group.  If we can, we're good
 	 */
 	if ((space_info->total_bytes != block_group->key.offset) &&
-	   (space_info->bytes_used + space_info->bytes_reserved +
-	    space_info->bytes_pinned + space_info->bytes_readonly +
-	    btrfs_block_group_used(&block_group->item) <
-	    space_info->total_bytes)) {
+	    (space_info->bytes_used + space_info->bytes_reserved +
+	     space_info->bytes_pinned + space_info->bytes_readonly +
+	     min_free < space_info->total_bytes)) {
 		spin_unlock(&space_info->lock);
 		goto out;
 	}
@@ -6766,9 +6785,31 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
 	if (full)
 		goto out;
 
+	/*
+	 * index:
+	 *      0: raid10
+	 *      1: raid1
+	 *      2: dup
+	 *      3: raid0
+	 *      4: single
+	 */
+	index = get_block_group_index(block_group);
+	if (index == 0) {
+		dev_min = 4;
+		/* Divide by 2 */
+		min_free >>= 1;
+	} else if (index == 1) {
+		dev_min = 2;
+	} else if (index == 2) {
+		/* Multiply by 2 */
+		min_free <<= 1;
+	} else if (index == 3) {
+		dev_min = fs_devices->rw_devices;
+		do_div(min_free, dev_min);
+	}
+
 	mutex_lock(&root->fs_info->chunk_mutex);
 	list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) {
-		u64 min_free = btrfs_block_group_used(&block_group->item);
 		u64 dev_offset;
 
 		/*
@@ -6779,7 +6820,11 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
 			ret = find_free_dev_extent(NULL, device, min_free,
 						   &dev_offset, NULL);
 			if (!ret)
+				dev_nr++;
+
+			if (dev_nr >= dev_min)
 				break;
+
 			ret = -1;
 		}
 	}
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index b910694f61ed..a1cb7821becd 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -183,8 +183,10 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
 	 * read from the commit root and sidestep a nasty deadlock
 	 * between reading the free space cache and updating the csum tree.
 	 */
-	if (btrfs_is_free_space_inode(root, inode))
+	if (btrfs_is_free_space_inode(root, inode)) {
 		path->search_commit_root = 1;
+		path->skip_locking = 1;
+	}
 
 	disk_bytenr = (u64)bio->bi_sector << 9;
 	if (dio)
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 658d66959abe..e4e57d59edb7 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -150,6 +150,8 @@ int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
 	spin_lock(&root->fs_info->defrag_inodes_lock);
 	if (!BTRFS_I(inode)->in_defrag)
 		__btrfs_add_inode_defrag(inode, defrag);
+	else
+		kfree(defrag);
 	spin_unlock(&root->fs_info->defrag_inodes_lock);
 	return 0;
 }
@@ -1034,11 +1036,13 @@ out:
  * on error we return an unlocked page and the error value
  * on success we return a locked page and 0
  */
-static int prepare_uptodate_page(struct page *page, u64 pos)
+static int prepare_uptodate_page(struct page *page, u64 pos,
+				 bool force_uptodate)
 {
 	int ret = 0;
 
-	if ((pos & (PAGE_CACHE_SIZE - 1)) && !PageUptodate(page)) {
+	if (((pos & (PAGE_CACHE_SIZE - 1)) || force_uptodate) &&
+	    !PageUptodate(page)) {
 		ret = btrfs_readpage(NULL, page);
 		if (ret)
 			return ret;
@@ -1059,7 +1063,7 @@ static int prepare_uptodate_page(struct page *page, u64 pos)
 static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
 			 struct page **pages, size_t num_pages,
 			 loff_t pos, unsigned long first_index,
-			 size_t write_bytes)
+			 size_t write_bytes, bool force_uptodate)
 {
 	struct extent_state *cached_state = NULL;
 	int i;
@@ -1073,12 +1077,6 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
 	start_pos = pos & ~((u64)root->sectorsize - 1);
 	last_pos = ((u64)index + num_pages) << PAGE_CACHE_SHIFT;
 
-	if (start_pos > inode->i_size) {
-		err = btrfs_cont_expand(inode, i_size_read(inode), start_pos);
-		if (err)
-			return err;
-	}
-
 again:
 	for (i = 0; i < num_pages; i++) {
 		pages[i] = find_or_create_page(inode->i_mapping, index + i,
@@ -1090,10 +1088,11 @@ again:
 		}
 
 		if (i == 0)
-			err = prepare_uptodate_page(pages[i], pos);
+			err = prepare_uptodate_page(pages[i], pos,
+						    force_uptodate);
 		if (i == num_pages - 1)
 			err = prepare_uptodate_page(pages[i],
-						    pos + write_bytes);
+						    pos + write_bytes, false);
 		if (err) {
 			page_cache_release(pages[i]);
 			faili = i - 1;
@@ -1162,6 +1161,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
 	size_t num_written = 0;
 	int nrptrs;
 	int ret = 0;
+	bool force_page_uptodate = false;
 
 	nrptrs = min((iov_iter_count(i) + PAGE_CACHE_SIZE - 1) /
 		     PAGE_CACHE_SIZE, PAGE_CACHE_SIZE /
@@ -1204,7 +1204,8 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
 		 * contents of pages from loop to loop
 		 */
 		ret = prepare_pages(root, file, pages, num_pages,
-				    pos, first_index, write_bytes);
+				    pos, first_index, write_bytes,
+				    force_page_uptodate);
 		if (ret) {
 			btrfs_delalloc_release_space(inode,
 					num_pages << PAGE_CACHE_SHIFT);
@@ -1221,12 +1222,15 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
 		if (copied < write_bytes)
 			nrptrs = 1;
 
-		if (copied == 0)
+		if (copied == 0) {
+			force_page_uptodate = true;
 			dirty_pages = 0;
-		else
+		} else {
+			force_page_uptodate = false;
 			dirty_pages = (copied + offset +
 				       PAGE_CACHE_SIZE - 1) >>
 				       PAGE_CACHE_SHIFT;
+		}
 
 		/*
 		 * If we had a short copy we need to release the excess delaloc
@@ -1336,6 +1340,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
 	struct inode *inode = fdentry(file)->d_inode;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	loff_t *ppos = &iocb->ki_pos;
+	u64 start_pos;
 	ssize_t num_written = 0;
 	ssize_t err = 0;
 	size_t count, ocount;
@@ -1384,6 +1389,15 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
 	file_update_time(file);
 	BTRFS_I(inode)->sequence++;
 
+	start_pos = round_down(pos, root->sectorsize);
+	if (start_pos > i_size_read(inode)) {
+		err = btrfs_cont_expand(inode, i_size_read(inode), start_pos);
+		if (err) {
+			mutex_unlock(&inode->i_mutex);
+			goto out;
+		}
+	}
+
 	if (unlikely(file->f_flags & O_DIRECT)) {
 		num_written = __btrfs_direct_write(iocb, iov, nr_segs,
 						   pos, ppos, count, ocount);
@@ -1638,11 +1652,15 @@ static long btrfs_fallocate(struct file *file, int mode,
 
 	cur_offset = alloc_start;
 	while (1) {
+		u64 actual_end;
+
 		em = btrfs_get_extent(inode, NULL, 0, cur_offset,
 				      alloc_end - cur_offset, 0);
 		BUG_ON(IS_ERR_OR_NULL(em));
 		last_byte = min(extent_map_end(em), alloc_end);
+		actual_end = min_t(u64, extent_map_end(em), offset + len);
 		last_byte = (last_byte + mask) & ~mask;
+
 		if (em->block_start == EXTENT_MAP_HOLE ||
 		    (cur_offset >= inode->i_size &&
 		     !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
@@ -1655,6 +1673,16 @@ static long btrfs_fallocate(struct file *file, int mode,
 				free_extent_map(em);
 				break;
 			}
+		} else if (actual_end > inode->i_size &&
+			   !(mode & FALLOC_FL_KEEP_SIZE)) {
+			/*
+			 * We didn't need to allocate any more space, but we
+			 * still extended the size of the file so we need to
+			 * update i_size.
+			 */
+			inode->i_ctime = CURRENT_TIME;
+			i_size_write(inode, actual_end);
+			btrfs_ordered_update_i_size(inode, actual_end, NULL);
 		}
 		free_extent_map(em);
 
@@ -1797,6 +1825,11 @@ static loff_t btrfs_file_llseek(struct file *file, loff_t offset, int origin)
 		goto out;
 	case SEEK_DATA:
 	case SEEK_HOLE:
+		if (offset >= i_size_read(inode)) {
+			mutex_unlock(&inode->i_mutex);
+			return -ENXIO;
+		}
+
 		ret = find_desired_extent(inode, &offset, origin);
 		if (ret) {
 			mutex_unlock(&inode->i_mutex);
@@ -1804,10 +1837,14 @@ static loff_t btrfs_file_llseek(struct file *file, loff_t offset, int origin)
 		}
 	}
 
-	if (offset < 0 && !(file->f_mode & FMODE_UNSIGNED_OFFSET))
-		return -EINVAL;
-	if (offset > inode->i_sb->s_maxbytes)
-		return -EINVAL;
+	if (offset < 0 && !(file->f_mode & FMODE_UNSIGNED_OFFSET)) {
+		offset = -EINVAL;
+		goto out;
+	}
+	if (offset > inode->i_sb->s_maxbytes) {
+		offset = -EINVAL;
+		goto out;
+	}
 
 	/* Special lock needed here? */
 	if (offset != file->f_pos) {
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 6377713f639c..41ac927401d0 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -190,9 +190,11 @@ int btrfs_truncate_free_space_cache(struct btrfs_root *root,
 				    struct btrfs_path *path,
 				    struct inode *inode)
 {
+	struct btrfs_block_rsv *rsv;
 	loff_t oldsize;
 	int ret = 0;
 
+	rsv = trans->block_rsv;
 	trans->block_rsv = root->orphan_block_rsv;
 	ret = btrfs_block_rsv_check(trans, root,
 				    root->orphan_block_rsv,
@@ -210,6 +212,8 @@ int btrfs_truncate_free_space_cache(struct btrfs_root *root,
 	 */
 	ret = btrfs_truncate_inode_items(trans, root, inode,
 					 0, BTRFS_EXTENT_DATA_KEY);
+
+	trans->block_rsv = rsv;
 	if (ret) {
 		WARN_ON(1);
 		return ret;
@@ -1168,9 +1172,9 @@ static void recalculate_thresholds(struct btrfs_free_space_ctl *ctl)
 		div64_u64(extent_bytes, (sizeof(struct btrfs_free_space)));
 }
 
-static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
-			      struct btrfs_free_space *info, u64 offset,
-			      u64 bytes)
+static inline void __bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
+				       struct btrfs_free_space *info,
+				       u64 offset, u64 bytes)
 {
 	unsigned long start, count;
 
@@ -1181,6 +1185,13 @@ static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
 	bitmap_clear(info->bitmap, start, count);
 
 	info->bytes -= bytes;
+}
+
+static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
+			      struct btrfs_free_space *info, u64 offset,
+			      u64 bytes)
+{
+	__bitmap_clear_bits(ctl, info, offset, bytes);
 	ctl->free_space -= bytes;
 }
 
@@ -1984,7 +1995,7 @@ static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group_cache *block_group,
 		return 0;
 
 	ret = search_start;
-	bitmap_clear_bits(ctl, entry, ret, bytes);
+	__bitmap_clear_bits(ctl, entry, ret, bytes);
 
 	return ret;
 }
@@ -2039,7 +2050,6 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 				continue;
 			}
 		} else {
-
 			ret = entry->offset;
 
 			entry->offset += bytes;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 15fceefbca0a..b2d004ad66a0 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1786,7 +1786,7 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end)
 			  &ordered_extent->list);
 
 	ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent);
-	if (!ret) {
+	if (!ret || !test_bit(BTRFS_ORDERED_PREALLOC, &ordered_extent->flags)) {
 		ret = btrfs_update_inode(trans, root, inode);
 		BUG_ON(ret);
 	}
@@ -3510,15 +3510,19 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size)
 			err = btrfs_drop_extents(trans, inode, cur_offset,
 						 cur_offset + hole_size,
 						 &hint_byte, 1);
-			if (err)
+			if (err) {
+				btrfs_end_transaction(trans, root);
 				break;
+			}
 
 			err = btrfs_insert_file_extent(trans, root,
 					btrfs_ino(inode), cur_offset, 0,
 					0, hole_size, 0, hole_size,
 					0, 0, 0);
-			if (err)
+			if (err) {
+				btrfs_end_transaction(trans, root);
 				break;
+			}
 
 			btrfs_drop_extent_cache(inode, hole_start,
 					last_byte - 1, 0);
@@ -3952,7 +3956,6 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
 			 struct btrfs_root *root, int *new)
 {
 	struct inode *inode;
-	int bad_inode = 0;
 
 	inode = btrfs_iget_locked(s, location->objectid, root);
 	if (!inode)
@@ -3968,15 +3971,12 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
 			if (new)
 				*new = 1;
 		} else {
-			bad_inode = 1;
+			unlock_new_inode(inode);
+			iput(inode);
+			inode = ERR_PTR(-ESTALE);
 		}
 	}
 
-	if (bad_inode) {
-		iput(inode);
-		inode = ERR_PTR(-ESTALE);
-	}
-
 	return inode;
 }
 
@@ -4018,7 +4018,8 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
 		memcpy(&location, dentry->d_fsdata, sizeof(struct btrfs_key));
 		kfree(dentry->d_fsdata);
 		dentry->d_fsdata = NULL;
-		d_clear_need_lookup(dentry);
+		/* This thing is hashed, drop it for now */
+		d_drop(dentry);
 	} else {
 		ret = btrfs_inode_by_name(dir, dentry, &location);
 	}
@@ -4085,7 +4086,15 @@ static void btrfs_dentry_release(struct dentry *dentry)
 static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry,
 				   struct nameidata *nd)
 {
-	return d_splice_alias(btrfs_lookup_dentry(dir, dentry), dentry);
+	struct dentry *ret;
+
+	ret = d_splice_alias(btrfs_lookup_dentry(dir, dentry), dentry);
+	if (unlikely(d_need_lookup(dentry))) {
+		spin_lock(&dentry->d_lock);
+		dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
+		spin_unlock(&dentry->d_lock);
+	}
+	return ret;
 }
 
 unsigned char btrfs_filetype_table[] = {
@@ -4125,7 +4134,8 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
 
 	/* special case for "." */
 	if (filp->f_pos == 0) {
-		over = filldir(dirent, ".", 1, 1, btrfs_ino(inode), DT_DIR);
+		over = filldir(dirent, ".", 1,
+			       filp->f_pos, btrfs_ino(inode), DT_DIR);
 		if (over)
 			return 0;
 		filp->f_pos = 1;
@@ -4134,7 +4144,7 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
 	if (filp->f_pos == 1) {
 		u64 pino = parent_ino(filp->f_path.dentry);
 		over = filldir(dirent, "..", 2,
-			       2, pino, DT_DIR);
+			       filp->f_pos, pino, DT_DIR);
 		if (over)
 			return 0;
 		filp->f_pos = 2;
@@ -5823,7 +5833,7 @@ again:
 
 	add_pending_csums(trans, inode, ordered->file_offset, &ordered->list);
 	ret = btrfs_ordered_update_i_size(inode, 0, ordered);
-	if (!ret)
+	if (!ret || !test_bit(BTRFS_ORDERED_PREALLOC, &ordered->flags))
 		btrfs_update_inode(trans, root, inode);
 	ret = 0;
 out_unlock:
@@ -7354,11 +7364,15 @@ static int btrfs_set_page_dirty(struct page *page)
 static int btrfs_permission(struct inode *inode, int mask)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
+	umode_t mode = inode->i_mode;
 
-	if (btrfs_root_readonly(root) && (mask & MAY_WRITE))
-		return -EROFS;
-	if ((BTRFS_I(inode)->flags & BTRFS_INODE_READONLY) && (mask & MAY_WRITE))
-		return -EACCES;
+	if (mask & MAY_WRITE &&
+	    (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) {
+		if (btrfs_root_readonly(root))
+			return -EROFS;
+		if (BTRFS_I(inode)->flags & BTRFS_INODE_READONLY)
+			return -EACCES;
+	}
 	return generic_permission(inode, mask);
 }
 
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 7cf013349941..dae5dfe41ba5 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1047,7 +1047,16 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
 	if (!max_to_defrag)
 		max_to_defrag = last_index - 1;
 
-	while (i <= last_index && defrag_count < max_to_defrag) {
+	/*
+	 * make writeback starts from i, so the defrag range can be
+	 * written sequentially.
+	 */
+	if (i < inode->i_mapping->writeback_index)
+		inode->i_mapping->writeback_index = i;
+
+	while (i <= last_index && defrag_count < max_to_defrag &&
+	       (i < (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
+		PAGE_CACHE_SHIFT)) {
 		/*
 		 * make sure we stop running if someone unmounts
 		 * the FS
@@ -2177,6 +2186,11 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 	if (!(src_file->f_mode & FMODE_READ))
 		goto out_fput;
 
+	/* don't make the dst file partly checksummed */
+	if ((BTRFS_I(src)->flags & BTRFS_INODE_NODATASUM) !=
+	    (BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM))
+		goto out_fput;
+
 	ret = -EISDIR;
 	if (S_ISDIR(src->i_mode) || S_ISDIR(inode->i_mode))
 		goto out_fput;
@@ -2220,6 +2234,16 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 	    !IS_ALIGNED(destoff, bs))
 		goto out_unlock;
 
+	if (destoff > inode->i_size) {
+		ret = btrfs_cont_expand(inode, inode->i_size, destoff);
+		if (ret)
+			goto out_unlock;
+	}
+
+	/* truncate page cache pages from target inode range */
+	truncate_inode_pages_range(&inode->i_data, destoff,
+				   PAGE_CACHE_ALIGN(destoff + len) - 1);
+
 	/* do any pending delalloc/csum calc on src, one way or
 	   another, and lock file content */
 	while (1) {
@@ -2313,7 +2337,12 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 			else
 				new_key.offset = destoff;
 
-			trans = btrfs_start_transaction(root, 1);
+			/*
+			 * 1 - adjusting old extent (we may have to split it)
+			 * 1 - add new extent
+			 * 1 - inode update
+			 */
+			trans = btrfs_start_transaction(root, 3);
 			if (IS_ERR(trans)) {
 				ret = PTR_ERR(trans);
 				goto out;
@@ -2321,14 +2350,21 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 
 			if (type == BTRFS_FILE_EXTENT_REG ||
 			    type == BTRFS_FILE_EXTENT_PREALLOC) {
+				/*
+				 *    a  | --- range to clone ---|  b
+				 * | ------------- extent ------------- |
+				 */
+
+				/* substract range b */
+				if (key.offset + datal > off + len)
+					datal = off + len - key.offset;
+
+				/* substract range a */
 				if (off > key.offset) {
 					datao += off - key.offset;
 					datal -= off - key.offset;
 				}
 
-				if (key.offset + datal > off + len)
-					datal = off + len - key.offset;
-
 				ret = btrfs_drop_extents(trans, inode,
 							 new_key.offset,
 							 new_key.offset + datal,
@@ -2425,7 +2461,6 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 			if (endoff > inode->i_size)
 				btrfs_i_size_write(inode, endoff);
 
-			BTRFS_I(inode)->flags = BTRFS_I(src)->flags;
 			ret = btrfs_update_inode(trans, root, inode);
 			BUG_ON(ret);
 			btrfs_end_transaction(trans, root);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 7dc36fab4afc..e24b7964a155 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -884,6 +884,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 	struct btrfs_root *tree_root = fs_info->tree_root;
 	struct btrfs_root *root = pending->root;
 	struct btrfs_root *parent_root;
+	struct btrfs_block_rsv *rsv;
 	struct inode *parent_inode;
 	struct dentry *parent;
 	struct dentry *dentry;
@@ -895,6 +896,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 	u64 objectid;
 	u64 root_flags;
 
+	rsv = trans->block_rsv;
+
 	new_root_item = kmalloc(sizeof(*new_root_item), GFP_NOFS);
 	if (!new_root_item) {
 		pending->error = -ENOMEM;
@@ -1002,6 +1005,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 	btrfs_orphan_post_snapshot(trans, pending);
 fail:
 	kfree(new_root_item);
+	trans->block_rsv = rsv;
 	btrfs_block_rsv_release(root, &pending->block_rsv, (u64)-1);
 	return 0;
 }
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index babee65f8eda..786639fca067 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -799,14 +799,15 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
 				  struct extent_buffer *eb, int slot,
 				  struct btrfs_key *key)
 {
-	struct inode *dir;
-	int ret;
 	struct btrfs_inode_ref *ref;
+	struct btrfs_dir_item *di;
+	struct inode *dir;
 	struct inode *inode;
-	char *name;
-	int namelen;
 	unsigned long ref_ptr;
 	unsigned long ref_end;
+	char *name;
+	int namelen;
+	int ret;
 	int search_done = 0;
 
 	/*
@@ -909,6 +910,25 @@ again:
 	}
 	btrfs_release_path(path);
 
+	/* look for a conflicting sequence number */
+	di = btrfs_lookup_dir_index_item(trans, root, path, btrfs_ino(dir),
+					 btrfs_inode_ref_index(eb, ref),
+					 name, namelen, 0);
+	if (di && !IS_ERR(di)) {
+		ret = drop_one_dir_item(trans, root, path, dir, di);
+		BUG_ON(ret);
+	}
+	btrfs_release_path(path);
+
+	/* look for a conflicing name */
+	di = btrfs_lookup_dir_item(trans, root, path, btrfs_ino(dir),
+				   name, namelen, 0);
+	if (di && !IS_ERR(di)) {
+		ret = drop_one_dir_item(trans, root, path, dir, di);
+		BUG_ON(ret);
+	}
+	btrfs_release_path(path);
+
 insert:
 	/* insert our name */
 	ret = btrfs_add_link(trans, dir, inode, name, namelen, 0,
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 53875ae73ad4..f2a4cc79da61 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -142,6 +142,7 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
 	unsigned long limit;
 	unsigned long last_waited = 0;
 	int force_reg = 0;
+	int sync_pending = 0;
 	struct blk_plug plug;
 
 	/*
@@ -229,6 +230,22 @@ loop_lock:
 
 		BUG_ON(atomic_read(&cur->bi_cnt) == 0);
 
+		/*
+		 * if we're doing the sync list, record that our
+		 * plug has some sync requests on it
+		 *
+		 * If we're doing the regular list and there are
+		 * sync requests sitting around, unplug before
+		 * we add more
+		 */
+		if (pending_bios == &device->pending_sync_bios) {
+			sync_pending = 1;
+		} else if (sync_pending) {
+			blk_finish_plug(&plug);
+			blk_start_plug(&plug);
+			sync_pending = 0;
+		}
+
 		submit_bio(cur->bi_rw, cur);
 		num_run++;
 		batch_run++;
@@ -500,6 +517,9 @@ static int __btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
 			fs_devices->rw_devices--;
 		}
 
+		if (device->can_discard)
+			fs_devices->num_can_discard--;
+
 		new_device = kmalloc(sizeof(*new_device), GFP_NOFS);
 		BUG_ON(!new_device);
 		memcpy(new_device, device, sizeof(*new_device));
@@ -508,6 +528,7 @@ static int __btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
 		new_device->bdev = NULL;
 		new_device->writeable = 0;
 		new_device->in_fs_metadata = 0;
+		new_device->can_discard = 0;
 		list_replace_rcu(&device->dev_list, &new_device->dev_list);
 
 		call_rcu(&device->rcu, free_device);
@@ -547,6 +568,7 @@ int btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
 static int __btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
 				fmode_t flags, void *holder)
 {
+	struct request_queue *q;
 	struct block_device *bdev;
 	struct list_head *head = &fs_devices->devices;
 	struct btrfs_device *device;
@@ -603,6 +625,12 @@ static int __btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
 			seeding = 0;
 		}
 
+		q = bdev_get_queue(bdev);
+		if (blk_queue_discard(q)) {
+			device->can_discard = 1;
+			fs_devices->num_can_discard++;
+		}
+
 		device->bdev = bdev;
 		device->in_fs_metadata = 0;
 		device->mode = flags;
@@ -835,6 +863,7 @@ int find_free_dev_extent(struct btrfs_trans_handle *trans,
 
 	max_hole_start = search_start;
 	max_hole_size = 0;
+	hole_size = 0;
 
 	if (search_start >= search_end) {
 		ret = -ENOSPC;
@@ -917,7 +946,14 @@ next:
 		cond_resched();
 	}
 
-	hole_size = search_end- search_start;
+	/*
+	 * At this point, search_start should be the end of
+	 * allocated dev extents, and when shrinking the device,
+	 * search_end may be smaller than search_start.
+	 */
+	if (search_end > search_start)
+		hole_size = search_end - search_start;
+
 	if (hole_size > max_hole_size) {
 		max_hole_start = search_start;
 		max_hole_size = hole_size;
@@ -1543,6 +1579,7 @@ error:
 
 int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
 {
+	struct request_queue *q;
 	struct btrfs_trans_handle *trans;
 	struct btrfs_device *device;
 	struct block_device *bdev;
@@ -1612,6 +1649,9 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
 
 	lock_chunks(root);
 
+	q = bdev_get_queue(bdev);
+	if (blk_queue_discard(q))
+		device->can_discard = 1;
 	device->writeable = 1;
 	device->work.func = pending_bios_fn;
 	generate_random_uuid(device->uuid);
@@ -1647,6 +1687,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
 	root->fs_info->fs_devices->num_devices++;
 	root->fs_info->fs_devices->open_devices++;
 	root->fs_info->fs_devices->rw_devices++;
+	if (device->can_discard)
+		root->fs_info->fs_devices->num_can_discard++;
 	root->fs_info->fs_devices->total_rw_bytes += device->total_bytes;
 
 	if (!blk_queue_nonrot(bdev_get_queue(bdev)))
@@ -2413,9 +2455,10 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
 			total_avail = device->total_bytes - device->bytes_used;
 		else
 			total_avail = 0;
-		/* avail is off by max(alloc_start, 1MB), but that is the same
-		 * for all devices, so it doesn't hurt the sorting later on
-		 */
+
+		/* If there is no space on this device, skip it. */
+		if (total_avail == 0)
+			continue;
 
 		ret = find_free_dev_extent(trans, device,
 					   max_stripe_size * dev_stripes,
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 7c12d61ae7ae..6d866db4e177 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -48,6 +48,7 @@ struct btrfs_device {
 	int writeable;
 	int in_fs_metadata;
 	int missing;
+	int can_discard;
 
 	spinlock_t io_lock;
 
@@ -104,6 +105,7 @@ struct btrfs_fs_devices {
 	u64 rw_devices;
 	u64 missing_devices;
 	u64 total_rw_bytes;
+	u64 num_can_discard;
 	struct block_device *latest_bdev;
 
 	/* all of the devices in the FS, protected by a mutex
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index d733b9cfea34..426aa464f1af 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -116,6 +116,12 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
 		if (ret)
 			goto out;
 		btrfs_release_path(path);
+
+		/*
+		 * remove the attribute
+		 */
+		if (!value)
+			goto out;
 	}
 
 again:
@@ -158,6 +164,9 @@ out:
 	return ret;
 }
 
+/*
+ * @value: "" makes the attribute to empty, NULL removes it
+ */
 int __btrfs_setxattr(struct btrfs_trans_handle *trans,
 		     struct inode *inode, const char *name,
 		     const void *value, size_t size, int flags)
@@ -374,36 +383,36 @@ int btrfs_removexattr(struct dentry *dentry, const char *name)
 				XATTR_REPLACE);
 }
 
-int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
-			      struct inode *inode, struct inode *dir,
-			      const struct qstr *qstr)
+int btrfs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		     void *fs_info)
 {
-	int err;
-	size_t len;
-	void *value;
-	char *suffix;
+	const struct xattr *xattr;
+	struct btrfs_trans_handle *trans = fs_info;
 	char *name;
+	int err = 0;
 
-	err = security_inode_init_security(inode, dir, qstr, &suffix, &value,
-					   &len);
-	if (err) {
-		if (err == -EOPNOTSUPP)
-			return 0;
-		return err;
-	}
-
-	name = kmalloc(XATTR_SECURITY_PREFIX_LEN + strlen(suffix) + 1,
-		       GFP_NOFS);
-	if (!name) {
-		err = -ENOMEM;
-	} else {
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		name = kmalloc(XATTR_SECURITY_PREFIX_LEN +
+			       strlen(xattr->name) + 1, GFP_NOFS);
+		if (!name) {
+			err = -ENOMEM;
+			break;
+		}
 		strcpy(name, XATTR_SECURITY_PREFIX);
-		strcpy(name + XATTR_SECURITY_PREFIX_LEN, suffix);
-		err = __btrfs_setxattr(trans, inode, name, value, len, 0);
+		strcpy(name + XATTR_SECURITY_PREFIX_LEN, xattr->name);
+		err = __btrfs_setxattr(trans, inode, name,
+				       xattr->value, xattr->value_len, 0);
 		kfree(name);
+		if (err < 0)
+			break;
 	}
-
-	kfree(suffix);
-	kfree(value);
 	return err;
 }
+
+int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
+			      struct inode *inode, struct inode *dir,
+			      const struct qstr *qstr)
+{
+	return security_inode_init_security(inode, dir, qstr,
+					    &btrfs_initxattrs, trans);
+}
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index fee028b5332e..86c59e16ba74 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1595,7 +1595,7 @@ static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
 		r = build_dentry_path(rdentry, ppath, pathlen, ino, freepath);
 		dout(" dentry %p %llx/%.*s\n", rdentry, *ino, *pathlen,
 		     *ppath);
-	} else if (rpath) {
+	} else if (rpath || rino) {
 		*ino = rino;
 		*ppath = rpath;
 		*pathlen = strlen(rpath);
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index d47c5ec7fb1f..88bacaf385d9 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -813,8 +813,8 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
 	fsc = create_fs_client(fsopt, opt);
 	if (IS_ERR(fsc)) {
 		res = ERR_CAST(fsc);
-		kfree(fsopt);
-		kfree(opt);
+		destroy_mount_options(fsopt);
+		ceph_destroy_options(opt);
 		goto out_final;
 	}
 
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 2fe3cf13b2e9..6d40656e1e29 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -176,7 +176,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 
 #ifdef CONFIG_CIFS_STATS2
 			seq_printf(m, " In Send: %d In MaxReq Wait: %d",
-				atomic_read(&server->inSend),
+				atomic_read(&server->in_send),
 				atomic_read(&server->num_waiters));
 #endif
 
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 21de1d6d5849..d0f59faefb78 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -991,24 +991,6 @@ struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *cifs_sb,
 	return pntsd;
 }
 
-static int set_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, __u16 fid,
-		struct cifs_ntsd *pnntsd, u32 acllen)
-{
-	int xid, rc;
-	struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
-
-	if (IS_ERR(tlink))
-		return PTR_ERR(tlink);
-
-	xid = GetXid();
-	rc = CIFSSMBSetCIFSACL(xid, tlink_tcon(tlink), fid, pnntsd, acllen);
-	FreeXid(xid);
-	cifs_put_tlink(tlink);
-
-	cFYI(DBG2, "SetCIFSACL rc = %d", rc);
-	return rc;
-}
-
 static int set_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path,
 		struct cifs_ntsd *pnntsd, u32 acllen)
 {
@@ -1047,18 +1029,10 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
 				struct inode *inode, const char *path)
 {
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct cifsFileInfo *open_file;
-	int rc;
 
 	cFYI(DBG2, "set ACL for %s from mode 0x%x", path, inode->i_mode);
 
-	open_file = find_readable_file(CIFS_I(inode), true);
-	if (!open_file)
-		return set_cifs_acl_by_path(cifs_sb, path, pnntsd, acllen);
-
-	rc = set_cifs_acl_by_fid(cifs_sb, open_file->netfid, pnntsd, acllen);
-	cifsFileInfo_put(open_file);
-	return rc;
+	return set_cifs_acl_by_path(cifs_sb, path, pnntsd, acllen);
 }
 
 /* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index e76bfeb68267..30acd22147e1 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -351,9 +351,7 @@ static int
 build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
 {
 	unsigned int dlen;
-	unsigned int wlen;
-	unsigned int size = 6 * sizeof(struct ntlmssp2_name);
-	__le64  curtime;
+	unsigned int size = 2 * sizeof(struct ntlmssp2_name);
 	char *defdmname = "WORKGROUP";
 	unsigned char *blobptr;
 	struct ntlmssp2_name *attrptr;
@@ -365,15 +363,14 @@ build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
 	}
 
 	dlen = strlen(ses->domainName);
-	wlen = strlen(ses->server->hostname);
 
-	/* The length of this blob is a size which is
-	 * six times the size of a structure which holds name/size +
-	 * two times the unicode length of a domain name +
-	 * two times the unicode length of a server name +
-	 * size of a timestamp (which is 8 bytes).
+	/*
+	 * The length of this blob is two times the size of a
+	 * structure (av pair) which holds name/size
+	 * ( for NTLMSSP_AV_NB_DOMAIN_NAME followed by NTLMSSP_AV_EOL ) +
+	 * unicode length of a netbios domain name
 	 */
-	ses->auth_key.len = size + 2 * (2 * dlen) + 2 * (2 * wlen) + 8;
+	ses->auth_key.len = size + 2 * dlen;
 	ses->auth_key.response = kzalloc(ses->auth_key.len, GFP_KERNEL);
 	if (!ses->auth_key.response) {
 		ses->auth_key.len = 0;
@@ -384,44 +381,15 @@ build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
 	blobptr = ses->auth_key.response;
 	attrptr = (struct ntlmssp2_name *) blobptr;
 
+	/*
+	 * As defined in MS-NTLM 3.3.2, just this av pair field
+	 * is sufficient as part of the temp
+	 */
 	attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME);
 	attrptr->length = cpu_to_le16(2 * dlen);
 	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
 	cifs_strtoUCS((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
 
-	blobptr += 2 * dlen;
-	attrptr = (struct ntlmssp2_name *) blobptr;
-
-	attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_COMPUTER_NAME);
-	attrptr->length = cpu_to_le16(2 * wlen);
-	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
-	cifs_strtoUCS((__le16 *)blobptr, ses->server->hostname, wlen, nls_cp);
-
-	blobptr += 2 * wlen;
-	attrptr = (struct ntlmssp2_name *) blobptr;
-
-	attrptr->type = cpu_to_le16(NTLMSSP_AV_DNS_DOMAIN_NAME);
-	attrptr->length = cpu_to_le16(2 * dlen);
-	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
-	cifs_strtoUCS((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
-
-	blobptr += 2 * dlen;
-	attrptr = (struct ntlmssp2_name *) blobptr;
-
-	attrptr->type = cpu_to_le16(NTLMSSP_AV_DNS_COMPUTER_NAME);
-	attrptr->length = cpu_to_le16(2 * wlen);
-	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
-	cifs_strtoUCS((__le16 *)blobptr, ses->server->hostname, wlen, nls_cp);
-
-	blobptr += 2 * wlen;
-	attrptr = (struct ntlmssp2_name *) blobptr;
-
-	attrptr->type = cpu_to_le16(NTLMSSP_AV_TIMESTAMP);
-	attrptr->length = cpu_to_le16(sizeof(__le64));
-	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
-	curtime = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
-	memcpy(blobptr, &curtime, sizeof(__le64));
-
 	return 0;
 }
 
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index f93eb948d071..54b8f1e7da94 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -548,6 +548,12 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
 		struct inode *dir = dentry->d_inode;
 		struct dentry *child;
 
+		if (!dir) {
+			dput(dentry);
+			dentry = ERR_PTR(-ENOENT);
+			break;
+		}
+
 		/* skip separators */
 		while (*s == sep)
 			s++;
@@ -563,10 +569,6 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
 		mutex_unlock(&dir->i_mutex);
 		dput(dentry);
 		dentry = child;
-		if (!dentry->d_inode) {
-			dput(dentry);
-			dentry = ERR_PTR(-ENOENT);
-		}
 	} while (!IS_ERR(dentry));
 	_FreeXid(xid);
 	kfree(full_path);
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index cb71dc1f94d1..95da8027983d 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -125,5 +125,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 extern const struct export_operations cifs_export_ops;
 #endif /* CIFS_NFSD_EXPORT */
 
-#define CIFS_VERSION   "1.74"
+#define CIFS_VERSION   "1.75"
 #endif				/* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 38ce6d44b145..95dad9d14cf1 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -291,7 +291,7 @@ struct TCP_Server_Info {
 	struct fscache_cookie   *fscache; /* client index cache cookie */
 #endif
 #ifdef CONFIG_CIFS_STATS2
-	atomic_t inSend; /* requests trying to send */
+	atomic_t in_send; /* requests trying to send */
 	atomic_t num_waiters;   /* blocked waiting to get in sendrecv */
 #endif
 };
@@ -672,12 +672,54 @@ struct mid_q_entry {
 	bool multiEnd:1;	/* both received */
 };
 
-struct oplock_q_entry {
-	struct list_head qhead;
-	struct inode *pinode;
-	struct cifs_tcon *tcon;
-	__u16 netfid;
-};
+/*	Make code in transport.c a little cleaner by moving
+	update of optional stats into function below */
+#ifdef CONFIG_CIFS_STATS2
+
+static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
+{
+	atomic_inc(&server->in_send);
+}
+
+static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
+{
+	atomic_dec(&server->in_send);
+}
+
+static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
+{
+	atomic_inc(&server->num_waiters);
+}
+
+static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
+{
+	atomic_dec(&server->num_waiters);
+}
+
+static inline void cifs_save_when_sent(struct mid_q_entry *mid)
+{
+	mid->when_sent = jiffies;
+}
+#else
+static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
+{
+}
+static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
+{
+}
+
+static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
+{
+}
+
+static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
+{
+}
+
+static inline void cifs_save_when_sent(struct mid_q_entry *mid)
+{
+}
+#endif
 
 /* for pending dnotify requests */
 struct dir_notify_req {
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index aac37d99a487..a80f7bd97b90 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -4079,7 +4079,8 @@ int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
 	T2_FNEXT_RSP_PARMS *parms;
 	char *response_data;
 	int rc = 0;
-	int bytes_returned, name_len;
+	int bytes_returned;
+	unsigned int name_len;
 	__u16 params, byte_count;
 
 	cFYI(1, "In FindNext");
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 80c2e3add3a2..62abf9fd6ff0 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1298,7 +1298,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 			/* ignore */
 		} else if (strnicmp(data, "guest", 5) == 0) {
 			/* ignore */
-		} else if (strnicmp(data, "rw", 2) == 0) {
+		} else if (strnicmp(data, "rw", 2) == 0 && strlen(data) == 2) {
 			/* ignore */
 		} else if (strnicmp(data, "ro", 2) == 0) {
 			/* ignore */
@@ -1401,7 +1401,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 			vol->server_ino = 1;
 		} else if (strnicmp(data, "noserverino", 9) == 0) {
 			vol->server_ino = 0;
-		} else if (strnicmp(data, "rwpidforward", 4) == 0) {
+		} else if (strnicmp(data, "rwpidforward", 12) == 0) {
 			vol->rwpidforward = 1;
 		} else if (strnicmp(data, "cifsacl", 7) == 0) {
 			vol->cifs_acl = 1;
@@ -2018,7 +2018,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
 		warned_on_ntlm = true;
 		cERROR(1, "default security mechanism requested.  The default "
 			"security mechanism will be upgraded from ntlm to "
-			"ntlmv2 in kernel release 3.1");
+			"ntlmv2 in kernel release 3.2");
 	}
 	ses->overrideSecFlg = volume_info->secFlg;
 
@@ -2877,8 +2877,9 @@ cleanup_volume_info_contents(struct smb_vol *volume_info)
 {
 	kfree(volume_info->username);
 	kzfree(volume_info->password);
+	if (volume_info->UNCip != volume_info->UNC + 2)
+		kfree(volume_info->UNCip);
 	kfree(volume_info->UNC);
-	kfree(volume_info->UNCip);
 	kfree(volume_info->domainname);
 	kfree(volume_info->iocharset);
 	kfree(volume_info->prepath);
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index ae576fbb5142..72d448bf96ce 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -105,8 +105,8 @@ cifs_bp_rename_retry:
 	}
 	rcu_read_unlock();
 	if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) {
-		cERROR(1, "did not end path lookup where expected namelen is %d",
-			namelen);
+		cFYI(1, "did not end path lookup where expected. namelen=%d "
+			"dfsplen=%d", namelen, dfsplen);
 		/* presumably this is only possible if racing with a rename
 		of one of the parent directories  (we can not lock the dentries
 		above us to prevent this, but retrying should be harmless) */
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index c1b9c4b10739..10ca6b2c26b7 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -266,15 +266,11 @@ static int wait_for_free_request(struct TCP_Server_Info *server,
 	while (1) {
 		if (atomic_read(&server->inFlight) >= cifs_max_pending) {
 			spin_unlock(&GlobalMid_Lock);
-#ifdef CONFIG_CIFS_STATS2
-			atomic_inc(&server->num_waiters);
-#endif
+			cifs_num_waiters_inc(server);
 			wait_event(server->request_q,
 				   atomic_read(&server->inFlight)
 				     < cifs_max_pending);
-#ifdef CONFIG_CIFS_STATS2
-			atomic_dec(&server->num_waiters);
-#endif
+			cifs_num_waiters_dec(server);
 			spin_lock(&GlobalMid_Lock);
 		} else {
 			if (server->tcpStatus == CifsExiting) {
@@ -381,15 +377,13 @@ cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
 	mid->callback = callback;
 	mid->callback_data = cbdata;
 	mid->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
-	atomic_inc(&server->inSend);
-#endif
+
+	cifs_in_send_inc(server);
 	rc = smb_sendv(server, iov, nvec);
-#ifdef CONFIG_CIFS_STATS2
-	atomic_dec(&server->inSend);
-	mid->when_sent = jiffies;
-#endif
+	cifs_in_send_dec(server);
+	cifs_save_when_sent(mid);
 	mutex_unlock(&server->srv_mutex);
+
 	if (rc)
 		goto out_err;
 
@@ -575,14 +569,10 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
 	}
 
 	midQ->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
-	atomic_inc(&ses->server->inSend);
-#endif
+	cifs_in_send_inc(ses->server);
 	rc = smb_sendv(ses->server, iov, n_vec);
-#ifdef CONFIG_CIFS_STATS2
-	atomic_dec(&ses->server->inSend);
-	midQ->when_sent = jiffies;
-#endif
+	cifs_in_send_dec(ses->server);
+	cifs_save_when_sent(midQ);
 
 	mutex_unlock(&ses->server->srv_mutex);
 
@@ -703,14 +693,11 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses,
 	}
 
 	midQ->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
-	atomic_inc(&ses->server->inSend);
-#endif
+
+	cifs_in_send_inc(ses->server);
 	rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
-#ifdef CONFIG_CIFS_STATS2
-	atomic_dec(&ses->server->inSend);
-	midQ->when_sent = jiffies;
-#endif
+	cifs_in_send_dec(ses->server);
+	cifs_save_when_sent(midQ);
 	mutex_unlock(&ses->server->srv_mutex);
 
 	if (rc < 0)
@@ -843,14 +830,10 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon,
 	}
 
 	midQ->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
-	atomic_inc(&ses->server->inSend);
-#endif
+	cifs_in_send_inc(ses->server);
 	rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
-#ifdef CONFIG_CIFS_STATS2
-	atomic_dec(&ses->server->inSend);
-	midQ->when_sent = jiffies;
-#endif
+	cifs_in_send_dec(ses->server);
+	cifs_save_when_sent(midQ);
 	mutex_unlock(&ses->server->srv_mutex);
 
 	if (rc < 0) {
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 2a22fb2989e4..c32308882148 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -22,6 +22,7 @@
 #include <linux/fs.h>
 #include <linux/posix_acl_xattr.h>
 #include <linux/slab.h>
+#include <linux/xattr.h>
 #include "cifsfs.h"
 #include "cifspdu.h"
 #include "cifsglob.h"
@@ -31,16 +32,8 @@
 #define MAX_EA_VALUE_SIZE 65535
 #define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib"
 #define CIFS_XATTR_CIFS_ACL "system.cifs_acl"
-#define CIFS_XATTR_USER_PREFIX "user."
-#define CIFS_XATTR_SYSTEM_PREFIX "system."
-#define CIFS_XATTR_OS2_PREFIX "os2."
-#define CIFS_XATTR_SECURITY_PREFIX "security."
-#define CIFS_XATTR_TRUSTED_PREFIX "trusted."
-#define XATTR_TRUSTED_PREFIX_LEN  8
-#define XATTR_SECURITY_PREFIX_LEN 9
-/* BB need to add server (Samba e.g) support for security and trusted prefix */
-
 
+/* BB need to add server (Samba e.g) support for security and trusted prefix */
 
 int cifs_removexattr(struct dentry *direntry, const char *ea_name)
 {
@@ -76,8 +69,8 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name)
 	}
 	if (ea_name == NULL) {
 		cFYI(1, "Null xattr names not supported");
-	} else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5)
-		&& (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4))) {
+	} else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
+		&& (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN))) {
 		cFYI(1,
 		     "illegal xattr request %s (only user namespace supported)",
 		     ea_name);
@@ -88,7 +81,7 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name)
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
 			goto remove_ea_exit;
 
-		ea_name += 5; /* skip past user. prefix */
+		ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
 		rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, NULL,
 			(__u16)0, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -149,21 +142,23 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
 
 	if (ea_name == NULL) {
 		cFYI(1, "Null xattr names not supported");
-	} else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) {
+	} else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
+		   == 0) {
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
 			goto set_ea_exit;
 		if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0)
 			cFYI(1, "attempt to set cifs inode metadata");
 
-		ea_name += 5; /* skip past user. prefix */
+		ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
 		rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
 			(__u16)value_size, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
-	} else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) {
+	} else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)
+		   == 0) {
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
 			goto set_ea_exit;
 
-		ea_name += 4; /* skip past os2. prefix */
+		ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
 		rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
 			(__u16)value_size, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -269,7 +264,8 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
 	/* return alt name if available as pseudo attr */
 	if (ea_name == NULL) {
 		cFYI(1, "Null xattr names not supported");
-	} else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) {
+	} else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
+		   == 0) {
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
 			goto get_ea_exit;
 
@@ -277,15 +273,15 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
 			cFYI(1, "attempt to query cifs inode metadata");
 			/* revalidate/getattr then populate from inode */
 		} /* BB add else when above is implemented */
-		ea_name += 5; /* skip past user. prefix */
+		ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
 		rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
 			buf_size, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
-	} else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) {
+	} else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) {
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
 			goto get_ea_exit;
 
-		ea_name += 4; /* skip past os2. prefix */
+		ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
 		rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
 			buf_size, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -339,10 +335,10 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
 		cFYI(1, "Query CIFS ACL not supported yet");
 #endif /* CONFIG_CIFS_ACL */
 	} else if (strncmp(ea_name,
-		  CIFS_XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) {
+		  XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) {
 		cFYI(1, "Trusted xattr namespace not supported yet");
 	} else if (strncmp(ea_name,
-		  CIFS_XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) {
+		  XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) {
 		cFYI(1, "Security xattr namespace not supported yet");
 	} else
 		cFYI(1,
diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h
index 44e17e9c21ae..cc0ea9fe5ecf 100644
--- a/fs/coda/coda_linux.h
+++ b/fs/coda/coda_linux.h
@@ -59,12 +59,11 @@ void coda_sysctl_clean(void);
 
 #define CODA_ALLOC(ptr, cast, size) do { \
     if (size < PAGE_SIZE) \
-        ptr = kmalloc((unsigned long) size, GFP_KERNEL); \
+        ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
     else \
-        ptr = (cast)vmalloc((unsigned long) size); \
+        ptr = (cast)vzalloc((unsigned long) size); \
     if (!ptr) \
         printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
-    else memset( ptr, 0, size ); \
 } while (0)
 
 
diff --git a/fs/compat.c b/fs/compat.c
index 0b48d018e38a..05e3f3d2cd77 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -37,7 +37,6 @@
 #include <linux/dirent.h>
 #include <linux/fsnotify.h>
 #include <linux/highuid.h>
-#include <linux/nfsd/syscall.h>
 #include <linux/personality.h>
 #include <linux/rwsem.h>
 #include <linux/tsacct_kern.h>
@@ -1675,11 +1674,6 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 }
 #endif /* HAVE_SET_RESTORE_SIGMASK */
 
-long asmlinkage compat_sys_nfsservctl(int cmd, void *notused, void *notused2)
-{
-	return sys_ni_syscall();
-}
-
 #ifdef CONFIG_EPOLL
 
 #ifdef HAVE_SET_RESTORE_SIGMASK
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 8be086e9abe4..51352de88ef1 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1003,6 +1003,7 @@ COMPATIBLE_IOCTL(PPPIOCCONNECT)
 COMPATIBLE_IOCTL(PPPIOCDISCONN)
 COMPATIBLE_IOCTL(PPPIOCATTCHAN)
 COMPATIBLE_IOCTL(PPPIOCGCHAN)
+COMPATIBLE_IOCTL(PPPIOCGL2TPSTATS)
 /* PPPOX */
 COMPATIBLE_IOCTL(PPPOEIOCSFWD)
 COMPATIBLE_IOCTL(PPPOEIOCDFWD)
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index c83f4768eeaa..ca418aaf6352 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -23,7 +23,8 @@
  *
  * configfs Copyright (C) 2005 Oracle.  All rights reserved.
  *
- * Please see Documentation/filesystems/configfs.txt for more information.
+ * Please see Documentation/filesystems/configfs/configfs.txt for more
+ * information.
  */
 
 #undef DEBUG
diff --git a/fs/configfs/item.c b/fs/configfs/item.c
index 76dc4c3e5d51..50cee7f9110b 100644
--- a/fs/configfs/item.c
+++ b/fs/configfs/item.c
@@ -23,7 +23,7 @@
  *
  * configfs Copyright (C) 2005 Oracle.  All rights reserved.
  *
- * Please see the file Documentation/filesystems/configfs.txt for
+ * Please see the file Documentation/filesystems/configfs/configfs.txt for
  * critical information about using the config_item interface.
  */
 
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index e7a7a2f07324..f3a257d7a985 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -1,5 +1,5 @@
 /*
- *  file.c - part of debugfs, a tiny little debug file system
+ *  inode.c - part of debugfs, a tiny little debug file system
  *
  *  Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
  *  Copyright (C) 2004 IBM Inc.
diff --git a/fs/ecryptfs/Kconfig b/fs/ecryptfs/Kconfig
index 1cd6d9d3e29a..cc16562654de 100644
--- a/fs/ecryptfs/Kconfig
+++ b/fs/ecryptfs/Kconfig
@@ -1,6 +1,6 @@
 config ECRYPT_FS
 	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && KEYS && CRYPTO
+	depends on EXPERIMENTAL && KEYS && CRYPTO && (ENCRYPTED_KEYS || ENCRYPTED_KEYS=n)
 	select CRYPTO_ECB
 	select CRYPTO_CBC
 	select CRYPTO_MD5
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 08a2b52bf565..ac1ad48c2376 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1973,7 +1973,7 @@ pki_encrypt_session_key(struct key *auth_tok_key,
 {
 	struct ecryptfs_msg_ctx *msg_ctx = NULL;
 	char *payload = NULL;
-	size_t payload_len;
+	size_t payload_len = 0;
 	struct ecryptfs_message *msg;
 	int rc;
 
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 9f1bb747d77d..b4a6befb1216 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -175,6 +175,7 @@ enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig,
        ecryptfs_opt_encrypted_view, ecryptfs_opt_fnek_sig,
        ecryptfs_opt_fn_cipher, ecryptfs_opt_fn_cipher_key_bytes,
        ecryptfs_opt_unlink_sigs, ecryptfs_opt_mount_auth_tok_only,
+       ecryptfs_opt_check_dev_ruid,
        ecryptfs_opt_err };
 
 static const match_table_t tokens = {
@@ -191,6 +192,7 @@ static const match_table_t tokens = {
 	{ecryptfs_opt_fn_cipher_key_bytes, "ecryptfs_fn_key_bytes=%u"},
 	{ecryptfs_opt_unlink_sigs, "ecryptfs_unlink_sigs"},
 	{ecryptfs_opt_mount_auth_tok_only, "ecryptfs_mount_auth_tok_only"},
+	{ecryptfs_opt_check_dev_ruid, "ecryptfs_check_dev_ruid"},
 	{ecryptfs_opt_err, NULL}
 };
 
@@ -236,6 +238,7 @@ static void ecryptfs_init_mount_crypt_stat(
  * ecryptfs_parse_options
  * @sb: The ecryptfs super block
  * @options: The options passed to the kernel
+ * @check_ruid: set to 1 if device uid should be checked against the ruid
  *
  * Parse mount options:
  * debug=N 	   - ecryptfs_verbosity level for debug output
@@ -251,7 +254,8 @@ static void ecryptfs_init_mount_crypt_stat(
  *
  * Returns zero on success; non-zero on error
  */
-static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options)
+static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options,
+				  uid_t *check_ruid)
 {
 	char *p;
 	int rc = 0;
@@ -276,6 +280,8 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options)
 	char *cipher_key_bytes_src;
 	char *fn_cipher_key_bytes_src;
 
+	*check_ruid = 0;
+
 	if (!options) {
 		rc = -EINVAL;
 		goto out;
@@ -380,6 +386,9 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options)
 			mount_crypt_stat->flags |=
 				ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY;
 			break;
+		case ecryptfs_opt_check_dev_ruid:
+			*check_ruid = 1;
+			break;
 		case ecryptfs_opt_err:
 		default:
 			printk(KERN_WARNING
@@ -475,6 +484,7 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
 	const char *err = "Getting sb failed";
 	struct inode *inode;
 	struct path path;
+	uid_t check_ruid;
 	int rc;
 
 	sbi = kmem_cache_zalloc(ecryptfs_sb_info_cache, GFP_KERNEL);
@@ -483,7 +493,7 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
 		goto out;
 	}
 
-	rc = ecryptfs_parse_options(sbi, raw_data);
+	rc = ecryptfs_parse_options(sbi, raw_data, &check_ruid);
 	if (rc) {
 		err = "Error parsing options";
 		goto out;
@@ -521,6 +531,15 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
 			"known incompatibilities\n");
 		goto out_free;
 	}
+
+	if (check_ruid && path.dentry->d_inode->i_uid != current_uid()) {
+		rc = -EPERM;
+		printk(KERN_ERR "Mount of device (uid: %d) not owned by "
+		       "requested user (uid: %d)\n",
+		       path.dentry->d_inode->i_uid, current_uid());
+		goto out_free;
+	}
+
 	ecryptfs_set_superblock_lower(s, path.dentry->d_sb);
 	s->s_maxbytes = path.dentry->d_sb->s_maxbytes;
 	s->s_blocksize = path.dentry->d_sb->s_blocksize;
diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c
index 85d430963116..3745f7c2b9c2 100644
--- a/fs/ecryptfs/read_write.c
+++ b/fs/ecryptfs/read_write.c
@@ -39,15 +39,16 @@
 int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
 			 loff_t offset, size_t size)
 {
-	struct ecryptfs_inode_info *inode_info;
+	struct file *lower_file;
 	mm_segment_t fs_save;
 	ssize_t rc;
 
-	inode_info = ecryptfs_inode_to_private(ecryptfs_inode);
-	BUG_ON(!inode_info->lower_file);
+	lower_file = ecryptfs_inode_to_private(ecryptfs_inode)->lower_file;
+	if (!lower_file)
+		return -EIO;
 	fs_save = get_fs();
 	set_fs(get_ds());
-	rc = vfs_write(inode_info->lower_file, data, size, &offset);
+	rc = vfs_write(lower_file, data, size, &offset);
 	set_fs(fs_save);
 	mark_inode_dirty_sync(ecryptfs_inode);
 	return rc;
@@ -225,15 +226,16 @@ out:
 int ecryptfs_read_lower(char *data, loff_t offset, size_t size,
 			struct inode *ecryptfs_inode)
 {
-	struct ecryptfs_inode_info *inode_info =
-		ecryptfs_inode_to_private(ecryptfs_inode);
+	struct file *lower_file;
 	mm_segment_t fs_save;
 	ssize_t rc;
 
-	BUG_ON(!inode_info->lower_file);
+	lower_file = ecryptfs_inode_to_private(ecryptfs_inode)->lower_file;
+	if (!lower_file)
+		return -EIO;
 	fs_save = get_fs();
 	set_fs(get_ds());
-	rc = vfs_read(inode_info->lower_file, data, size, &offset);
+	rc = vfs_read(lower_file, data, size, &offset);
 	set_fs(fs_save);
 	return rc;
 }
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index fe047d966dc5..9026fc91fe3b 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -700,7 +700,7 @@ static const struct file_operations eventpoll_fops = {
 	.llseek		= noop_llseek,
 };
 
-/* Fast test to see if the file is an evenpoll file */
+/* Fast test to see if the file is an eventpoll file */
 static inline int is_file_epoll(struct file *f)
 {
 	return f->f_op == &eventpoll_fops;
diff --git a/fs/exec.c b/fs/exec.c
index da80612a35f4..25dcbe5fc356 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1459,6 +1459,23 @@ static int do_execve_common(const char *filename,
 	struct files_struct *displaced;
 	bool clear_in_exec;
 	int retval;
+	const struct cred *cred = current_cred();
+
+	/*
+	 * We move the actual failure in case of RLIMIT_NPROC excess from
+	 * set*uid() to execve() because too many poorly written programs
+	 * don't check setuid() return code.  Here we additionally recheck
+	 * whether NPROC limit is still exceeded.
+	 */
+	if ((current->flags & PF_NPROC_EXCEEDED) &&
+	    atomic_read(&cred->user->processes) > rlimit(RLIMIT_NPROC)) {
+		retval = -EAGAIN;
+		goto out_ret;
+	}
+
+	/* We're below the limit (still or again), so we don't want to make
+	 * further execve() calls fail. */
+	current->flags &= ~PF_NPROC_EXCEEDED;
 
 	retval = unshare_files(&displaced);
 	if (retval)
diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
index 5d979b4347b0..c922adc8ef41 100644
--- a/fs/ext2/xattr_security.c
+++ b/fs/ext2/xattr_security.c
@@ -46,28 +46,30 @@ ext2_xattr_security_set(struct dentry *dentry, const char *name,
 			      value, size, flags);
 }
 
-int
-ext2_init_security(struct inode *inode, struct inode *dir,
-		   const struct qstr *qstr)
+int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		    void *fs_info)
 {
-	int err;
-	size_t len;
-	void *value;
-	char *name;
+	const struct xattr *xattr;
+	int err = 0;
 
-	err = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
-	if (err) {
-		if (err == -EOPNOTSUPP)
-			return 0;
-		return err;
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
+				     xattr->name, xattr->value,
+				     xattr->value_len, 0);
+		if (err < 0)
+			break;
 	}
-	err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
-			     name, value, len, 0);
-	kfree(name);
-	kfree(value);
 	return err;
 }
 
+int
+ext2_init_security(struct inode *inode, struct inode *dir,
+		   const struct qstr *qstr)
+{
+	return security_inode_init_security(inode, dir, qstr,
+					    &ext2_initxattrs, NULL);
+}
+
 const struct xattr_handler ext2_xattr_security_handler = {
 	.prefix	= XATTR_SECURITY_PREFIX,
 	.list	= ext2_xattr_security_list,
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 04da6acde85d..12661e1deedd 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1134,7 +1134,7 @@ struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode,
 		return bh;
 	if (buffer_uptodate(bh))
 		return bh;
-	ll_rw_block(READ_META, 1, &bh);
+	ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh);
 	wait_on_buffer(bh);
 	if (buffer_uptodate(bh))
 		return bh;
@@ -2807,7 +2807,7 @@ make_io:
 		trace_ext3_load_inode(inode);
 		get_bh(bh);
 		bh->b_end_io = end_buffer_read_sync;
-		submit_bh(READ_META, bh);
+		submit_bh(READ | REQ_META | REQ_PRIO, bh);
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh)) {
 			ext3_error(inode->i_sb, "ext3_get_inode_loc",
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 6e18a0b7750d..0629e09f6511 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -922,7 +922,8 @@ restart:
 				bh = ext3_getblk(NULL, dir, b++, 0, &err);
 				bh_use[ra_max] = bh;
 				if (bh)
-					ll_rw_block(READ_META, 1, &bh);
+					ll_rw_block(READ | REQ_META | REQ_PRIO,
+						    1, &bh);
 			}
 		}
 		if ((bh = bh_use[ra_ptr++]) == NULL)
@@ -2209,9 +2210,11 @@ static int ext3_symlink (struct inode * dir,
 		/*
 		 * For non-fast symlinks, we just allocate inode and put it on
 		 * orphan list in the first transaction => we need bitmap,
-		 * group descriptor, sb, inode block, quota blocks.
+		 * group descriptor, sb, inode block, quota blocks, and
+		 * possibly selinux xattr blocks.
 		 */
-		credits = 4 + EXT3_MAXQUOTAS_INIT_BLOCKS(dir->i_sb);
+		credits = 4 + EXT3_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +
+			  EXT3_XATTR_TRANS_BLOCKS;
 	} else {
 		/*
 		 * Fast symlink. We have to add entry to directory
diff --git a/fs/ext3/xattr_security.c b/fs/ext3/xattr_security.c
index b8d9f83aa5c5..3c218b8a51d4 100644
--- a/fs/ext3/xattr_security.c
+++ b/fs/ext3/xattr_security.c
@@ -48,28 +48,32 @@ ext3_xattr_security_set(struct dentry *dentry, const char *name,
 			      name, value, size, flags);
 }
 
-int
-ext3_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
-		   const struct qstr *qstr)
+int ext3_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		    void *fs_info)
 {
-	int err;
-	size_t len;
-	void *value;
-	char *name;
+	const struct xattr *xattr;
+	handle_t *handle = fs_info;
+	int err = 0;
 
-	err = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
-	if (err) {
-		if (err == -EOPNOTSUPP)
-			return 0;
-		return err;
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		err = ext3_xattr_set_handle(handle, inode,
+					    EXT3_XATTR_INDEX_SECURITY,
+					    xattr->name, xattr->value,
+					    xattr->value_len, 0);
+		if (err < 0)
+			break;
 	}
-	err = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_SECURITY,
-				    name, value, len, 0);
-	kfree(name);
-	kfree(value);
 	return err;
 }
 
+int
+ext3_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
+		   const struct qstr *qstr)
+{
+	return security_inode_init_security(inode, dir, qstr,
+					    &ext3_initxattrs, handle);
+}
+
 const struct xattr_handler ext3_xattr_security_handler = {
 	.prefix	= XATTR_SECURITY_PREFIX,
 	.list	= ext3_xattr_security_list,
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index e717dfd2f2b4..b7d7bd0f066e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -175,6 +175,7 @@ struct mpage_da_data {
  */
 #define	EXT4_IO_END_UNWRITTEN	0x0001
 #define EXT4_IO_END_ERROR	0x0002
+#define EXT4_IO_END_QUEUED	0x0004
 
 struct ext4_io_page {
 	struct page	*p_page;
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index bb85757689b6..5802fa1dab18 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -289,10 +289,10 @@ static inline int ext4_should_order_data(struct inode *inode)
 
 static inline int ext4_should_writeback_data(struct inode *inode)
 {
-	if (!S_ISREG(inode->i_mode))
-		return 0;
 	if (EXT4_JOURNAL(inode) == NULL)
 		return 1;
+	if (!S_ISREG(inode->i_mode))
+		return 0;
 	if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
 		return 0;
 	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index b8602cde5b5a..0962642119c0 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -800,12 +800,17 @@ ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
 	}
 
 retry:
-	if (rw == READ && ext4_should_dioread_nolock(inode))
+	if (rw == READ && ext4_should_dioread_nolock(inode)) {
+		if (unlikely(!list_empty(&ei->i_completed_io_list))) {
+			mutex_lock(&inode->i_mutex);
+			ext4_flush_completed_IO(inode);
+			mutex_unlock(&inode->i_mutex);
+		}
 		ret = __blockdev_direct_IO(rw, iocb, inode,
 				 inode->i_sb->s_bdev, iov,
 				 offset, nr_segs,
 				 ext4_get_block, NULL, NULL, 0);
-	else {
+	} else {
 		ret = blockdev_direct_IO(rw, iocb, inode, iov,
 				 offset, nr_segs, ext4_get_block);
 
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index d47264cafee0..986e2388f031 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -120,6 +120,9 @@ void ext4_evict_inode(struct inode *inode)
 	int err;
 
 	trace_ext4_evict_inode(inode);
+
+	ext4_ioend_wait(inode);
+
 	if (inode->i_nlink) {
 		/*
 		 * When journalling data dirty buffers are tracked only in the
@@ -644,7 +647,7 @@ struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode,
 		return bh;
 	if (buffer_uptodate(bh))
 		return bh;
-	ll_rw_block(READ_META, 1, &bh);
+	ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh);
 	wait_on_buffer(bh);
 	if (buffer_uptodate(bh))
 		return bh;
@@ -983,6 +986,8 @@ static int ext4_journalled_write_end(struct file *file,
 	from = pos & (PAGE_CACHE_SIZE - 1);
 	to = from + len;
 
+	BUG_ON(!ext4_handle_valid(handle));
+
 	if (copied < len) {
 		if (!PageUptodate(page))
 			copied = 0;
@@ -1283,7 +1288,12 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
 			else if (test_opt(inode->i_sb, MBLK_IO_SUBMIT))
 				err = ext4_bio_write_page(&io_submit, page,
 							  len, mpd->wbc);
-			else
+			else if (buffer_uninit(page_bufs)) {
+				ext4_set_bh_endio(page_bufs, inode);
+				err = block_write_full_page_endio(page,
+					noalloc_get_block_write,
+					mpd->wbc, ext4_end_io_buffer_write);
+			} else
 				err = block_write_full_page(page,
 					noalloc_get_block_write, mpd->wbc);
 
@@ -1699,6 +1709,8 @@ static int __ext4_journalled_writepage(struct page *page,
 		goto out;
 	}
 
+	BUG_ON(!ext4_handle_valid(handle));
+
 	ret = walk_page_buffers(handle, page_bufs, 0, len, NULL,
 				do_journal_get_write_access);
 
@@ -2668,8 +2680,15 @@ static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
 		goto out;
 	}
 
-	io_end->flag = EXT4_IO_END_UNWRITTEN;
+	/*
+	 * It may be over-defensive here to check EXT4_IO_END_UNWRITTEN now,
+	 * but being more careful is always safe for the future change.
+	 */
 	inode = io_end->inode;
+	if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
+		io_end->flag |= EXT4_IO_END_UNWRITTEN;
+		atomic_inc(&EXT4_I(inode)->i_aiodio_unwritten);
+	}
 
 	/* Add the io_end to per-inode completed io list*/
 	spin_lock_irqsave(&EXT4_I(inode)->i_completed_io_lock, flags);
@@ -3279,7 +3298,7 @@ make_io:
 		trace_ext4_load_inode(inode);
 		get_bh(bh);
 		bh->b_end_io = end_buffer_read_sync;
-		submit_bh(READ_META, bh);
+		submit_bh(READ | REQ_META | REQ_PRIO, bh);
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh)) {
 			EXT4_ERROR_INODE_BLOCK(inode, block,
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 565a154e22d4..1c924faeb6c8 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -922,7 +922,8 @@ restart:
 				bh = ext4_getblk(NULL, dir, b++, 0, &err);
 				bh_use[ra_max] = bh;
 				if (bh)
-					ll_rw_block(READ_META, 1, &bh);
+					ll_rw_block(READ | REQ_META | REQ_PRIO,
+						    1, &bh);
 			}
 		}
 		if ((bh = bh_use[ra_ptr++]) == NULL)
@@ -2253,9 +2254,11 @@ static int ext4_symlink(struct inode *dir,
 		/*
 		 * For non-fast symlinks, we just allocate inode and put it on
 		 * orphan list in the first transaction => we need bitmap,
-		 * group descriptor, sb, inode block, quota blocks.
+		 * group descriptor, sb, inode block, quota blocks, and
+		 * possibly selinux xattr blocks.
 		 */
-		credits = 4 + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb);
+		credits = 4 + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +
+			  EXT4_XATTR_TRANS_BLOCKS;
 	} else {
 		/*
 		 * Fast symlink. We have to add entry to directory
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 430c401d0895..92f38ee13f8a 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -142,7 +142,23 @@ static void ext4_end_io_work(struct work_struct *work)
 	unsigned long		flags;
 	int			ret;
 
-	mutex_lock(&inode->i_mutex);
+	if (!mutex_trylock(&inode->i_mutex)) {
+		/*
+		 * Requeue the work instead of waiting so that the work
+		 * items queued after this can be processed.
+		 */
+		queue_work(EXT4_SB(inode->i_sb)->dio_unwritten_wq, &io->work);
+		/*
+		 * To prevent the ext4-dio-unwritten thread from keeping
+		 * requeueing end_io requests and occupying cpu for too long,
+		 * yield the cpu if it sees an end_io request that has already
+		 * been requeued.
+		 */
+		if (io->flag & EXT4_IO_END_QUEUED)
+			yield();
+		io->flag |= EXT4_IO_END_QUEUED;
+		return;
+	}
 	ret = ext4_end_io_nolock(io);
 	if (ret < 0) {
 		mutex_unlock(&inode->i_mutex);
@@ -334,8 +350,10 @@ submit_and_retry:
 	if ((io_end->num_io_pages >= MAX_IO_PAGES) &&
 	    (io_end->pages[io_end->num_io_pages-1] != io_page))
 		goto submit_and_retry;
-	if (buffer_uninit(bh))
-		io->io_end->flag |= EXT4_IO_END_UNWRITTEN;
+	if (buffer_uninit(bh) && !(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
+		io_end->flag |= EXT4_IO_END_UNWRITTEN;
+		atomic_inc(&EXT4_I(inode)->i_aiodio_unwritten);
+	}
 	io->io_end->size += bh->b_size;
 	io->io_next_block++;
 	ret = bio_add_page(io->io_bio, bh->b_page, bh->b_size, bh_offset(bh));
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4687fea0c00f..44d0c8db2239 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -919,7 +919,6 @@ static void ext4_i_callback(struct rcu_head *head)
 
 static void ext4_destroy_inode(struct inode *inode)
 {
-	ext4_ioend_wait(inode);
 	if (!list_empty(&(EXT4_I(inode)->i_orphan))) {
 		ext4_msg(inode->i_sb, KERN_ERR,
 			 "Inode %lu (%p): orphan list check failed!",
diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c
index 007c3bfbf094..34e4350dd4d9 100644
--- a/fs/ext4/xattr_security.c
+++ b/fs/ext4/xattr_security.c
@@ -48,28 +48,32 @@ ext4_xattr_security_set(struct dentry *dentry, const char *name,
 			      name, value, size, flags);
 }
 
-int
-ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
-		   const struct qstr *qstr)
+int ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		    void *fs_info)
 {
-	int err;
-	size_t len;
-	void *value;
-	char *name;
+	const struct xattr *xattr;
+	handle_t *handle = fs_info;
+	int err = 0;
 
-	err = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
-	if (err) {
-		if (err == -EOPNOTSUPP)
-			return 0;
-		return err;
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		err = ext4_xattr_set_handle(handle, inode,
+					    EXT4_XATTR_INDEX_SECURITY,
+					    xattr->name, xattr->value,
+					    xattr->value_len, 0);
+		if (err < 0)
+			break;
 	}
-	err = ext4_xattr_set_handle(handle, inode, EXT4_XATTR_INDEX_SECURITY,
-				    name, value, len, 0);
-	kfree(name);
-	kfree(value);
 	return err;
 }
 
+int
+ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
+		   const struct qstr *qstr)
+{
+	return security_inode_init_security(inode, dir, qstr,
+					    &ext4_initxattrs, handle);
+}
+
 const struct xattr_handler ext4_xattr_security_handler = {
 	.prefix	= XATTR_SECURITY_PREFIX,
 	.list	= ext4_xattr_security_list,
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 4ad64732cbce..5efbd5d7701a 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -1231,7 +1231,7 @@ int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
 	struct super_block *sb = dir->i_sb;
 	struct msdos_sb_info *sbi = MSDOS_SB(sb);
 	struct buffer_head *bh, *prev, *bhs[3]; /* 32*slots (672bytes) */
-	struct msdos_dir_entry *de;
+	struct msdos_dir_entry *uninitialized_var(de);
 	int err, free_slots, i, nr_bhs;
 	loff_t pos, i_pos;
 
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 5942fec22c65..1726d7303047 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1188,9 +1188,9 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat,
 out:
 	/* UTF-8 doesn't provide FAT semantics */
 	if (!strcmp(opts->iocharset, "utf8")) {
-		fat_msg(sb, KERN_ERR, "utf8 is not a recommended IO charset"
+		fat_msg(sb, KERN_WARNING, "utf8 is not a recommended IO charset"
 		       " for FAT filesystems, filesystem will be "
-		       "case sensitive!\n");
+		       "case sensitive!");
 	}
 
 	/* If user doesn't specify allow_utime, it's initialized from dmask. */
@@ -1367,6 +1367,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,
 	sbi->free_clusters = -1;	/* Don't know yet */
 	sbi->free_clus_valid = 0;
 	sbi->prev_free = FAT_START_ENT;
+	sb->s_maxbytes = 0xffffffff;
 
 	if (!sbi->fat_length && b->fat32_length) {
 		struct fat_boot_fsinfo *fsinfo;
@@ -1377,8 +1378,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,
 		sbi->fat_length = le32_to_cpu(b->fat32_length);
 		sbi->root_cluster = le32_to_cpu(b->root_cluster);
 
-		sb->s_maxbytes = 0xffffffff;
-
 		/* MC - if info_sector is 0, don't multiply by 0 */
 		sbi->fsinfo_sector = le16_to_cpu(b->info_sector);
 		if (sbi->fsinfo_sector == 0)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 640fc229df10..5cb8614508c3 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -258,10 +258,14 @@ void fuse_queue_forget(struct fuse_conn *fc, struct fuse_forget_link *forget,
 	forget->forget_one.nlookup = nlookup;
 
 	spin_lock(&fc->lock);
-	fc->forget_list_tail->next = forget;
-	fc->forget_list_tail = forget;
-	wake_up(&fc->waitq);
-	kill_fasync(&fc->fasync, SIGIO, POLL_IN);
+	if (fc->connected) {
+		fc->forget_list_tail->next = forget;
+		fc->forget_list_tail = forget;
+		wake_up(&fc->waitq);
+		kill_fasync(&fc->fasync, SIGIO, POLL_IN);
+	} else {
+		kfree(forget);
+	}
 	spin_unlock(&fc->lock);
 }
 
@@ -1358,6 +1362,10 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size,
 	if (outarg.namelen > FUSE_NAME_MAX)
 		goto err;
 
+	err = -EINVAL;
+	if (size != sizeof(outarg) + outarg.namelen + 1)
+		goto err;
+
 	name.name = buf;
 	name.len = outarg.namelen;
 	err = fuse_copy_one(cs, buf, outarg.namelen + 1);
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index d480d9af46c9..594f07a81c28 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -14,6 +14,7 @@
 #include <linux/sched.h>
 #include <linux/module.h>
 #include <linux/compat.h>
+#include <linux/swap.h>
 
 static const struct file_operations fuse_direct_io_file_operations;
 
@@ -245,6 +246,12 @@ void fuse_release_common(struct file *file, int opcode)
 	req = ff->reserved_req;
 	fuse_prepare_release(ff, file->f_flags, opcode);
 
+	if (ff->flock) {
+		struct fuse_release_in *inarg = &req->misc.release.in;
+		inarg->release_flags |= FUSE_RELEASE_FLOCK_UNLOCK;
+		inarg->lock_owner = fuse_lock_owner_id(ff->fc,
+						       (fl_owner_t) file);
+	}
 	/* Hold vfsmount and dentry until release is finished */
 	path_get(&file->f_path);
 	req->misc.release.path = file->f_path;
@@ -755,18 +762,6 @@ static size_t fuse_send_write(struct fuse_req *req, struct file *file,
 	return req->misc.write.out.size;
 }
 
-static int fuse_write_begin(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned flags,
-			struct page **pagep, void **fsdata)
-{
-	pgoff_t index = pos >> PAGE_CACHE_SHIFT;
-
-	*pagep = grab_cache_page_write_begin(mapping, index, flags);
-	if (!*pagep)
-		return -ENOMEM;
-	return 0;
-}
-
 void fuse_write_update_size(struct inode *inode, loff_t pos)
 {
 	struct fuse_conn *fc = get_fuse_conn(inode);
@@ -779,62 +774,6 @@ void fuse_write_update_size(struct inode *inode, loff_t pos)
 	spin_unlock(&fc->lock);
 }
 
-static int fuse_buffered_write(struct file *file, struct inode *inode,
-			       loff_t pos, unsigned count, struct page *page)
-{
-	int err;
-	size_t nres;
-	struct fuse_conn *fc = get_fuse_conn(inode);
-	unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
-	struct fuse_req *req;
-
-	if (is_bad_inode(inode))
-		return -EIO;
-
-	/*
-	 * Make sure writepages on the same page are not mixed up with
-	 * plain writes.
-	 */
-	fuse_wait_on_page_writeback(inode, page->index);
-
-	req = fuse_get_req(fc);
-	if (IS_ERR(req))
-		return PTR_ERR(req);
-
-	req->in.argpages = 1;
-	req->num_pages = 1;
-	req->pages[0] = page;
-	req->page_offset = offset;
-	nres = fuse_send_write(req, file, pos, count, NULL);
-	err = req->out.h.error;
-	fuse_put_request(fc, req);
-	if (!err && !nres)
-		err = -EIO;
-	if (!err) {
-		pos += nres;
-		fuse_write_update_size(inode, pos);
-		if (count == PAGE_CACHE_SIZE)
-			SetPageUptodate(page);
-	}
-	fuse_invalidate_attr(inode);
-	return err ? err : nres;
-}
-
-static int fuse_write_end(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
-{
-	struct inode *inode = mapping->host;
-	int res = 0;
-
-	if (copied)
-		res = fuse_buffered_write(file, inode, pos, copied, page);
-
-	unlock_page(page);
-	page_cache_release(page);
-	return res;
-}
-
 static size_t fuse_send_write_pages(struct fuse_req *req, struct file *file,
 				    struct inode *inode, loff_t pos,
 				    size_t count)
@@ -908,6 +847,8 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
 		pagefault_enable();
 		flush_dcache_page(page);
 
+		mark_page_accessed(page);
+
 		if (!tmp) {
 			unlock_page(page);
 			page_cache_release(page);
@@ -1559,11 +1500,14 @@ static int fuse_file_flock(struct file *file, int cmd, struct file_lock *fl)
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	int err;
 
-	if (fc->no_lock) {
+	if (fc->no_flock) {
 		err = flock_lock_file_wait(file, fl);
 	} else {
+		struct fuse_file *ff = file->private_data;
+
 		/* emulate flock with POSIX locks */
 		fl->fl_owner = (fl_owner_t) file;
+		ff->flock = true;
 		err = fuse_setlk(file, fl, 1);
 	}
 
@@ -2201,8 +2145,6 @@ static const struct address_space_operations fuse_file_aops  = {
 	.readpage	= fuse_readpage,
 	.writepage	= fuse_writepage,
 	.launder_page	= fuse_launder_page,
-	.write_begin	= fuse_write_begin,
-	.write_end	= fuse_write_end,
 	.readpages	= fuse_readpages,
 	.set_page_dirty	= __set_page_dirty_nobuffers,
 	.bmap		= fuse_bmap,
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index c6aa2d4b8517..cf6db0a93219 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -135,6 +135,9 @@ struct fuse_file {
 
 	/** Wait queue head for poll */
 	wait_queue_head_t poll_wait;
+
+	/** Has flock been performed on this file? */
+	bool flock:1;
 };
 
 /** One input argument of a request */
@@ -448,7 +451,7 @@ struct fuse_conn {
 	/** Is removexattr not implemented by fs? */
 	unsigned no_removexattr:1;
 
-	/** Are file locking primitives not implemented by fs? */
+	/** Are posix file locking primitives not implemented by fs? */
 	unsigned no_lock:1;
 
 	/** Is access not implemented by fs? */
@@ -472,6 +475,9 @@ struct fuse_conn {
 	/** Don't apply umask to creation modes */
 	unsigned dont_mask:1;
 
+	/** Are BSD file locking primitives not implemented by fs? */
+	unsigned no_flock:1;
+
 	/** The number of requests waiting for completion */
 	atomic_t num_waiting;
 
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 38f84cd48b67..add96f6ffda5 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -71,7 +71,7 @@ struct fuse_mount_data {
 	unsigned blksize;
 };
 
-struct fuse_forget_link *fuse_alloc_forget()
+struct fuse_forget_link *fuse_alloc_forget(void)
 {
 	return kzalloc(sizeof(struct fuse_forget_link), GFP_KERNEL);
 }
@@ -809,6 +809,13 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
 				fc->async_read = 1;
 			if (!(arg->flags & FUSE_POSIX_LOCKS))
 				fc->no_lock = 1;
+			if (arg->minor >= 17) {
+				if (!(arg->flags & FUSE_FLOCK_LOCKS))
+					fc->no_flock = 1;
+			} else {
+				if (!(arg->flags & FUSE_POSIX_LOCKS))
+					fc->no_flock = 1;
+			}
 			if (arg->flags & FUSE_ATOMIC_O_TRUNC)
 				fc->atomic_o_trunc = 1;
 			if (arg->minor >= 9) {
@@ -823,6 +830,7 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
 		} else {
 			ra_pages = fc->max_read / PAGE_CACHE_SIZE;
 			fc->no_lock = 1;
+			fc->no_flock = 1;
 		}
 
 		fc->bdi.ra_pages = min(fc->bdi.ra_pages, ra_pages);
@@ -843,7 +851,8 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req)
 	arg->minor = FUSE_KERNEL_MINOR_VERSION;
 	arg->max_readahead = fc->bdi.ra_pages * PAGE_CACHE_SIZE;
 	arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC |
-		FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK;
+		FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK |
+		FUSE_FLOCK_LOCKS;
 	req->in.h.opcode = FUSE_INIT;
 	req->in.numargs = 1;
 	req->in.args[0].size = sizeof(*arg);
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 900cf986aadc..6525b804d5ec 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -624,31 +624,29 @@ fail:
 	return error;
 }
 
-static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
-			      const struct qstr *qstr)
+int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		    void *fs_info)
 {
-	int err;
-	size_t len;
-	void *value;
-	char *name;
-
-	err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
-					   &name, &value, &len);
-
-	if (err) {
-		if (err == -EOPNOTSUPP)
-			return 0;
-		return err;
+	const struct xattr *xattr;
+	int err = 0;
+
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		err = __gfs2_xattr_set(inode, xattr->name, xattr->value,
+				       xattr->value_len, 0,
+				       GFS2_EATYPE_SECURITY);
+		if (err < 0)
+			break;
 	}
-
-	err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
-			       GFS2_EATYPE_SECURITY);
-	kfree(value);
-	kfree(name);
-
 	return err;
 }
 
+static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
+			      const struct qstr *qstr)
+{
+	return security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
+					    &gfs2_initxattrs, NULL);
+}
+
 /**
  * gfs2_create_inode - Create a new inode
  * @dir: The parent directory
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 85c62923ee29..598646434362 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -624,9 +624,9 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull)
 	bh->b_end_io = end_buffer_write_sync;
 	get_bh(bh);
 	if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags))
-		submit_bh(WRITE_SYNC | REQ_META, bh);
+		submit_bh(WRITE_SYNC | REQ_META | REQ_PRIO, bh);
 	else
-		submit_bh(WRITE_FLUSH_FUA | REQ_META, bh);
+		submit_bh(WRITE_FLUSH_FUA | REQ_META | REQ_PRIO, bh);
 	wait_on_buffer(bh);
 
 	if (!buffer_uptodate(bh))
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 747238cd9f96..be29858900f6 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -37,7 +37,7 @@ static int gfs2_aspace_writepage(struct page *page, struct writeback_control *wb
 {
 	struct buffer_head *bh, *head;
 	int nr_underway = 0;
-	int write_op = REQ_META |
+	int write_op = REQ_META | REQ_PRIO |
 		(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
 
 	BUG_ON(!PageLocked(page));
@@ -225,7 +225,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
 	}
 	bh->b_end_io = end_buffer_read_sync;
 	get_bh(bh);
-	submit_bh(READ_SYNC | REQ_META, bh);
+	submit_bh(READ_SYNC | REQ_META | REQ_PRIO, bh);
 	if (!(flags & DIO_WAIT))
 		return 0;
 
@@ -435,7 +435,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen)
 	if (buffer_uptodate(first_bh))
 		goto out;
 	if (!buffer_locked(first_bh))
-		ll_rw_block(READ_SYNC | REQ_META, 1, &first_bh);
+		ll_rw_block(READ_SYNC | REQ_META | REQ_PRIO, 1, &first_bh);
 
 	dblock++;
 	extlen--;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 3bc073a4cf82..079587e53849 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -224,7 +224,7 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent)
 
 	bio->bi_end_io = end_bio_io_page;
 	bio->bi_private = page;
-	submit_bio(READ_SYNC | REQ_META, bio);
+	submit_bio(READ_SYNC | REQ_META | REQ_PRIO, bio);
 	wait_on_page_locked(page);
 	bio_put(bio);
 	if (!PageUptodate(page)) {
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 42e8d23bc047..0e8bb13381e4 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -709,7 +709,7 @@ get_a_page:
 		set_buffer_uptodate(bh);
 
 	if (!buffer_uptodate(bh)) {
-		ll_rw_block(READ_META, 1, &bh);
+		ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh);
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh))
 			goto unlock_out;
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index c106ca22e812..d24a9b666a23 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -344,6 +344,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
 	struct inode *root, *inode;
 	struct qstr str;
 	struct nls_table *nls = NULL;
+	u64 last_fs_block, last_fs_page;
 	int err;
 
 	err = -EINVAL;
@@ -399,9 +400,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
 	if (!sbi->rsrc_clump_blocks)
 		sbi->rsrc_clump_blocks = 1;
 
-	err = generic_check_addressable(sbi->alloc_blksz_shift,
-					sbi->total_blocks);
-	if (err) {
+	err = -EFBIG;
+	last_fs_block = sbi->total_blocks - 1;
+	last_fs_page = (last_fs_block << sbi->alloc_blksz_shift) >>
+			PAGE_CACHE_SHIFT;
+
+	if ((last_fs_block > (sector_t)(~0ULL) >> (sbi->alloc_blksz_shift - 9)) ||
+	    (last_fs_page > (pgoff_t)(~0ULL))) {
 		printk(KERN_ERR "hfs: filesystem size too large.\n");
 		goto out_free_vhdr;
 	}
@@ -525,8 +530,8 @@ out_close_cat_tree:
 out_close_ext_tree:
 	hfs_btree_close(sbi->ext_tree);
 out_free_vhdr:
-	kfree(sbi->s_vhdr);
-	kfree(sbi->s_backup_vhdr);
+	kfree(sbi->s_vhdr_buf);
+	kfree(sbi->s_backup_vhdr_buf);
 out_unload_nls:
 	unload_nls(sbi->nls);
 	unload_nls(nls);
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 10e515a0d452..7daf4b852d1c 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -272,9 +272,9 @@ reread:
 	return 0;
 
 out_free_backup_vhdr:
-	kfree(sbi->s_backup_vhdr);
+	kfree(sbi->s_backup_vhdr_buf);
 out_free_vhdr:
-	kfree(sbi->s_vhdr);
+	kfree(sbi->s_vhdr_buf);
 out:
 	return error;
 }
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 87b6e0421c12..ec889538e5a6 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -491,6 +491,7 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, uid_t uid,
 			inode->i_op = &page_symlink_inode_operations;
 			break;
 		}
+		lockdep_annotate_inode_mutex_key(inode);
 	}
 	return inode;
 }
diff --git a/fs/inode.c b/fs/inode.c
index 73920d555c88..ec7924696a13 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -848,16 +848,9 @@ struct inode *new_inode(struct super_block *sb)
 }
 EXPORT_SYMBOL(new_inode);
 
-/**
- * unlock_new_inode - clear the I_NEW state and wake up any waiters
- * @inode:	new inode to unlock
- *
- * Called when the inode is fully initialised to clear the new state of the
- * inode and wake up anyone waiting for the inode to finish initialisation.
- */
-void unlock_new_inode(struct inode *inode)
-{
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
+void lockdep_annotate_inode_mutex_key(struct inode *inode)
+{
 	if (S_ISDIR(inode->i_mode)) {
 		struct file_system_type *type = inode->i_sb->s_type;
 
@@ -873,7 +866,20 @@ void unlock_new_inode(struct inode *inode)
 					  &type->i_mutex_dir_key);
 		}
 	}
+}
+EXPORT_SYMBOL(lockdep_annotate_inode_mutex_key);
 #endif
+
+/**
+ * unlock_new_inode - clear the I_NEW state and wake up any waiters
+ * @inode:	new inode to unlock
+ *
+ * Called when the inode is fully initialised to clear the new state of the
+ * inode and wake up anyone waiting for the inode to finish initialisation.
+ */
+void unlock_new_inode(struct inode *inode)
+{
+	lockdep_annotate_inode_mutex_key(inode);
 	spin_lock(&inode->i_lock);
 	WARN_ON(!(inode->i_state & I_NEW));
 	inode->i_state &= ~I_NEW;
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index cfeb7164b085..0f20208df602 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -22,26 +22,29 @@
 #include <linux/security.h>
 #include "nodelist.h"
 
-/* ---- Initial Security Label Attachment -------------- */
-int jffs2_init_security(struct inode *inode, struct inode *dir,
-			const struct qstr *qstr)
+/* ---- Initial Security Label(s) Attachment callback --- */
+int jffs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		     void *fs_info)
 {
-	int rc;
-	size_t len;
-	void *value;
-	char *name;
+	const struct xattr *xattr;
+	int err = 0;
 
-	rc = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
-	if (rc) {
-		if (rc == -EOPNOTSUPP)
-			return 0;
-		return rc;
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
+					xattr->name, xattr->value,
+					xattr->value_len, 0);
+		if (err < 0)
+			break;
 	}
-	rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, value, len, 0);
+	return err;
+}
 
-	kfree(name);
-	kfree(value);
-	return rc;
+/* ---- Initial Security Label(s) Attachment ----------- */
+int jffs2_init_security(struct inode *inode, struct inode *dir,
+			const struct qstr *qstr)
+{
+	return security_inode_init_security(inode, dir, qstr,
+					    &jffs2_initxattrs, NULL);
 }
 
 /* ---- XATTR Handler for "security.*" ----------------- */
diff --git a/fs/jfs/jfs_umount.c b/fs/jfs/jfs_umount.c
index adcf92d3b603..7971f37534a3 100644
--- a/fs/jfs/jfs_umount.c
+++ b/fs/jfs/jfs_umount.c
@@ -68,7 +68,7 @@ int jfs_umount(struct super_block *sb)
 		/*
 		 * Wait for outstanding transactions to be written to log:
 		 */
-		jfs_flush_journal(log, 1);
+		jfs_flush_journal(log, 2);
 
 	/*
 	 * close fileset inode allocation map (aka fileset inode)
@@ -146,7 +146,7 @@ int jfs_umount_rw(struct super_block *sb)
 	 *
 	 * remove file system from log active file system list.
 	 */
-	jfs_flush_journal(log, 1);
+	jfs_flush_journal(log, 2);
 
 	/*
 	 * Make sure all metadata makes it to disk
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index e87fedef23db..26683e15b3ac 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -1089,38 +1089,37 @@ int jfs_removexattr(struct dentry *dentry, const char *name)
 }
 
 #ifdef CONFIG_JFS_SECURITY
-int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir,
-		      const struct qstr *qstr)
+int jfs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		   void *fs_info)
 {
-	int rc;
-	size_t len;
-	void *value;
-	char *suffix;
+	const struct xattr *xattr;
+	tid_t *tid = fs_info;
 	char *name;
-
-	rc = security_inode_init_security(inode, dir, qstr, &suffix, &value,
-					  &len);
-	if (rc) {
-		if (rc == -EOPNOTSUPP)
-			return 0;
-		return rc;
-	}
-	name = kmalloc(XATTR_SECURITY_PREFIX_LEN + 1 + strlen(suffix),
-		       GFP_NOFS);
-	if (!name) {
-		rc = -ENOMEM;
-		goto kmalloc_failed;
+	int err = 0;
+
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		name = kmalloc(XATTR_SECURITY_PREFIX_LEN +
+			       strlen(xattr->name) + 1, GFP_NOFS);
+		if (!name) {
+			err = -ENOMEM;
+			break;
+		}
+		strcpy(name, XATTR_SECURITY_PREFIX);
+		strcpy(name + XATTR_SECURITY_PREFIX_LEN, xattr->name);
+
+		err = __jfs_setxattr(*tid, inode, name,
+				     xattr->value, xattr->value_len, 0);
+		kfree(name);
+		if (err < 0)
+			break;
 	}
-	strcpy(name, XATTR_SECURITY_PREFIX);
-	strcpy(name + XATTR_SECURITY_PREFIX_LEN, suffix);
-
-	rc = __jfs_setxattr(tid, inode, name, value, len, 0);
-
-	kfree(name);
-kmalloc_failed:
-	kfree(suffix);
-	kfree(value);
+	return err;
+}
 
-	return rc;
+int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir,
+		      const struct qstr *qstr)
+{
+	return security_inode_init_security(inode, dir, qstr,
+					    &jfs_initxattrs, &tid);
 }
 #endif
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index b7c99bfb3da6..6f29836ec0cb 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -316,14 +316,8 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
 	struct hlist_node *pos;
 	struct nlm_host	*host = NULL;
 	struct nsm_handle *nsm = NULL;
-	struct sockaddr_in sin = {
-		.sin_family	= AF_INET,
-	};
-	struct sockaddr_in6 sin6 = {
-		.sin6_family	= AF_INET6,
-	};
-	struct sockaddr *src_sap;
-	size_t src_len = rqstp->rq_addrlen;
+	struct sockaddr *src_sap = svc_daddr(rqstp);
+	size_t src_len = rqstp->rq_daddrlen;
 	struct nlm_lookup_host_info ni = {
 		.server		= 1,
 		.sap		= svc_addr(rqstp),
@@ -340,21 +334,6 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
 
 	mutex_lock(&nlm_host_mutex);
 
-	switch (ni.sap->sa_family) {
-	case AF_INET:
-		sin.sin_addr.s_addr = rqstp->rq_daddr.addr.s_addr;
-		src_sap = (struct sockaddr *)&sin;
-		break;
-	case AF_INET6:
-		ipv6_addr_copy(&sin6.sin6_addr, &rqstp->rq_daddr.addr6);
-		src_sap = (struct sockaddr *)&sin6;
-		break;
-	default:
-		dprintk("lockd: %s failed; unrecognized address family\n",
-			__func__);
-		goto out;
-	}
-
 	if (time_after_eq(jiffies, next_gc))
 		nlm_gc_hosts();
 
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index abfff9d7979d..c061b9aa7ddb 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -282,7 +282,7 @@ int lockd_up(void)
 	/*
 	 * Create the kernel thread and wait for it to start.
 	 */
-	nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0]);
+	nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
 	if (IS_ERR(nlmsvc_rqst)) {
 		error = PTR_ERR(nlmsvc_rqst);
 		nlmsvc_rqst = NULL;
diff --git a/fs/locks.c b/fs/locks.c
index 703f545097de..3b0d05dcd7c1 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -60,7 +60,7 @@
  *
  *  Initial implementation of mandatory locks. SunOS turned out to be
  *  a rotten model, so I implemented the "obvious" semantics.
- *  See 'Documentation/mandatory.txt' for details.
+ *  See 'Documentation/filesystems/mandatory-locking.txt' for details.
  *  Andy Walker (andy@lysaker.kvaerner.no), April 06, 1996.
  *
  *  Don't allow mandatory locks on mmap()'ed files. Added simple functions to
@@ -133,6 +133,20 @@
 #define IS_FLOCK(fl)	(fl->fl_flags & FL_FLOCK)
 #define IS_LEASE(fl)	(fl->fl_flags & FL_LEASE)
 
+static bool lease_breaking(struct file_lock *fl)
+{
+	return fl->fl_flags & (FL_UNLOCK_PENDING | FL_DOWNGRADE_PENDING);
+}
+
+static int target_leasetype(struct file_lock *fl)
+{
+	if (fl->fl_flags & FL_UNLOCK_PENDING)
+		return F_UNLCK;
+	if (fl->fl_flags & FL_DOWNGRADE_PENDING)
+		return F_RDLCK;
+	return fl->fl_type;
+}
+
 int leases_enable = 1;
 int lease_break_time = 45;
 
@@ -1119,6 +1133,17 @@ int locks_mandatory_area(int read_write, struct inode *inode,
 
 EXPORT_SYMBOL(locks_mandatory_area);
 
+static void lease_clear_pending(struct file_lock *fl, int arg)
+{
+	switch (arg) {
+	case F_UNLCK:
+		fl->fl_flags &= ~FL_UNLOCK_PENDING;
+		/* fall through: */
+	case F_RDLCK:
+		fl->fl_flags &= ~FL_DOWNGRADE_PENDING;
+	}
+}
+
 /* We already had a lease on this file; just change its type */
 int lease_modify(struct file_lock **before, int arg)
 {
@@ -1127,6 +1152,7 @@ int lease_modify(struct file_lock **before, int arg)
 
 	if (error)
 		return error;
+	lease_clear_pending(fl, arg);
 	locks_wake_up_blocks(fl);
 	if (arg == F_UNLCK)
 		locks_delete_lock(before);
@@ -1135,19 +1161,25 @@ int lease_modify(struct file_lock **before, int arg)
 
 EXPORT_SYMBOL(lease_modify);
 
+static bool past_time(unsigned long then)
+{
+	if (!then)
+		/* 0 is a special value meaning "this never expires": */
+		return false;
+	return time_after(jiffies, then);
+}
+
 static void time_out_leases(struct inode *inode)
 {
 	struct file_lock **before;
 	struct file_lock *fl;
 
 	before = &inode->i_flock;
-	while ((fl = *before) && IS_LEASE(fl) && (fl->fl_type & F_INPROGRESS)) {
-		if ((fl->fl_break_time == 0)
-				|| time_before(jiffies, fl->fl_break_time)) {
-			before = &fl->fl_next;
-			continue;
-		}
-		lease_modify(before, fl->fl_type & ~F_INPROGRESS);
+	while ((fl = *before) && IS_LEASE(fl) && lease_breaking(fl)) {
+		if (past_time(fl->fl_downgrade_time))
+			lease_modify(before, F_RDLCK);
+		if (past_time(fl->fl_break_time))
+			lease_modify(before, F_UNLCK);
 		if (fl == *before)	/* lease_modify may have freed fl */
 			before = &fl->fl_next;
 	}
@@ -1165,7 +1197,7 @@ static void time_out_leases(struct inode *inode)
  */
 int __break_lease(struct inode *inode, unsigned int mode)
 {
-	int error = 0, future;
+	int error = 0;
 	struct file_lock *new_fl, *flock;
 	struct file_lock *fl;
 	unsigned long break_time;
@@ -1182,24 +1214,13 @@ int __break_lease(struct inode *inode, unsigned int mode)
 	if ((flock == NULL) || !IS_LEASE(flock))
 		goto out;
 
+	if (!locks_conflict(flock, new_fl))
+		goto out;
+
 	for (fl = flock; fl && IS_LEASE(fl); fl = fl->fl_next)
 		if (fl->fl_owner == current->files)
 			i_have_this_lease = 1;
 
-	if (want_write) {
-		/* If we want write access, we have to revoke any lease. */
-		future = F_UNLCK | F_INPROGRESS;
-	} else if (flock->fl_type & F_INPROGRESS) {
-		/* If the lease is already being broken, we just leave it */
-		future = flock->fl_type;
-	} else if (flock->fl_type & F_WRLCK) {
-		/* Downgrade the exclusive lease to a read-only lease. */
-		future = F_RDLCK | F_INPROGRESS;
-	} else {
-		/* the existing lease was read-only, so we can read too. */
-		goto out;
-	}
-
 	if (IS_ERR(new_fl) && !i_have_this_lease
 			&& ((mode & O_NONBLOCK) == 0)) {
 		error = PTR_ERR(new_fl);
@@ -1214,12 +1235,18 @@ int __break_lease(struct inode *inode, unsigned int mode)
 	}
 
 	for (fl = flock; fl && IS_LEASE(fl); fl = fl->fl_next) {
-		if (fl->fl_type != future) {
-			fl->fl_type = future;
+		if (want_write) {
+			if (fl->fl_flags & FL_UNLOCK_PENDING)
+				continue;
+			fl->fl_flags |= FL_UNLOCK_PENDING;
 			fl->fl_break_time = break_time;
-			/* lease must have lmops break callback */
-			fl->fl_lmops->lm_break(fl);
+		} else {
+			if (lease_breaking(flock))
+				continue;
+			fl->fl_flags |= FL_DOWNGRADE_PENDING;
+			fl->fl_downgrade_time = break_time;
 		}
+		fl->fl_lmops->lm_break(fl);
 	}
 
 	if (i_have_this_lease || (mode & O_NONBLOCK)) {
@@ -1243,10 +1270,13 @@ restart:
 	if (error >= 0) {
 		if (error == 0)
 			time_out_leases(inode);
-		/* Wait for the next lease that has not been broken yet */
+		/*
+		 * Wait for the next conflicting lease that has not been
+		 * broken yet
+		 */
 		for (flock = inode->i_flock; flock && IS_LEASE(flock);
 				flock = flock->fl_next) {
-			if (flock->fl_type & F_INPROGRESS)
+			if (locks_conflict(new_fl, flock))
 				goto restart;
 		}
 		error = 0;
@@ -1314,7 +1344,7 @@ int fcntl_getlease(struct file *filp)
 	for (fl = filp->f_path.dentry->d_inode->i_flock; fl && IS_LEASE(fl);
 			fl = fl->fl_next) {
 		if (fl->fl_file == filp) {
-			type = fl->fl_type & ~F_INPROGRESS;
+			type = target_leasetype(fl);
 			break;
 		}
 	}
@@ -1322,50 +1352,23 @@ int fcntl_getlease(struct file *filp)
 	return type;
 }
 
-/**
- *	generic_setlease	-	sets a lease on an open file
- *	@filp: file pointer
- *	@arg: type of lease to obtain
- *	@flp: input - file_lock to use, output - file_lock inserted
- *
- *	The (input) flp->fl_lmops->lm_break function is required
- *	by break_lease().
- *
- *	Called with file_lock_lock held.
- */
-int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
+int generic_add_lease(struct file *filp, long arg, struct file_lock **flp)
 {
 	struct file_lock *fl, **before, **my_before = NULL, *lease;
 	struct dentry *dentry = filp->f_path.dentry;
 	struct inode *inode = dentry->d_inode;
-	int error, rdlease_count = 0, wrlease_count = 0;
+	int error;
 
 	lease = *flp;
 
-	error = -EACCES;
-	if ((current_fsuid() != inode->i_uid) && !capable(CAP_LEASE))
-		goto out;
-	error = -EINVAL;
-	if (!S_ISREG(inode->i_mode))
+	error = -EAGAIN;
+	if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0))
 		goto out;
-	error = security_file_lock(filp, arg);
-	if (error)
+	if ((arg == F_WRLCK)
+	    && ((dentry->d_count > 1)
+		|| (atomic_read(&inode->i_count) > 1)))
 		goto out;
 
-	time_out_leases(inode);
-
-	BUG_ON(!(*flp)->fl_lmops->lm_break);
-
-	if (arg != F_UNLCK) {
-		error = -EAGAIN;
-		if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0))
-			goto out;
-		if ((arg == F_WRLCK)
-		    && ((dentry->d_count > 1)
-			|| (atomic_read(&inode->i_count) > 1)))
-			goto out;
-	}
-
 	/*
 	 * At this point, we know that if there is an exclusive
 	 * lease on this file, then we hold it on this filp
@@ -1374,27 +1377,28 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
 	 * then the file is not open by anyone (including us)
 	 * except for this filp.
 	 */
+	error = -EAGAIN;
 	for (before = &inode->i_flock;
 			((fl = *before) != NULL) && IS_LEASE(fl);
 			before = &fl->fl_next) {
-		if (fl->fl_file == filp)
+		if (fl->fl_file == filp) {
 			my_before = before;
-		else if (fl->fl_type == (F_INPROGRESS | F_UNLCK))
-			/*
-			 * Someone is in the process of opening this
-			 * file for writing so we may not take an
-			 * exclusive lease on it.
-			 */
-			wrlease_count++;
-		else
-			rdlease_count++;
+			continue;
+		}
+		/*
+		 * No exclusive leases if someone else has a lease on
+		 * this file:
+		 */
+		if (arg == F_WRLCK)
+			goto out;
+		/*
+		 * Modifying our existing lease is OK, but no getting a
+		 * new lease if someone else is opening for write:
+		 */
+		if (fl->fl_flags & FL_UNLOCK_PENDING)
+			goto out;
 	}
 
-	error = -EAGAIN;
-	if ((arg == F_RDLCK && (wrlease_count > 0)) ||
-	    (arg == F_WRLCK && ((rdlease_count + wrlease_count) > 0)))
-		goto out;
-
 	if (my_before != NULL) {
 		error = lease->fl_lmops->lm_change(my_before, arg);
 		if (!error)
@@ -1402,9 +1406,6 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
 		goto out;
 	}
 
-	if (arg == F_UNLCK)
-		goto out;
-
 	error = -EINVAL;
 	if (!leases_enable)
 		goto out;
@@ -1415,6 +1416,62 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
 out:
 	return error;
 }
+
+int generic_delete_lease(struct file *filp, struct file_lock **flp)
+{
+	struct file_lock *fl, **before;
+	struct dentry *dentry = filp->f_path.dentry;
+	struct inode *inode = dentry->d_inode;
+
+	for (before = &inode->i_flock;
+			((fl = *before) != NULL) && IS_LEASE(fl);
+			before = &fl->fl_next) {
+		if (fl->fl_file != filp)
+			continue;
+		return (*flp)->fl_lmops->lm_change(before, F_UNLCK);
+	}
+	return -EAGAIN;
+}
+
+/**
+ *	generic_setlease	-	sets a lease on an open file
+ *	@filp: file pointer
+ *	@arg: type of lease to obtain
+ *	@flp: input - file_lock to use, output - file_lock inserted
+ *
+ *	The (input) flp->fl_lmops->lm_break function is required
+ *	by break_lease().
+ *
+ *	Called with file_lock_lock held.
+ */
+int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
+{
+	struct dentry *dentry = filp->f_path.dentry;
+	struct inode *inode = dentry->d_inode;
+	int error;
+
+	if ((current_fsuid() != inode->i_uid) && !capable(CAP_LEASE))
+		return -EACCES;
+	if (!S_ISREG(inode->i_mode))
+		return -EINVAL;
+	error = security_file_lock(filp, arg);
+	if (error)
+		return error;
+
+	time_out_leases(inode);
+
+	BUG_ON(!(*flp)->fl_lmops->lm_break);
+
+	switch (arg) {
+	case F_UNLCK:
+		return generic_delete_lease(filp, flp);
+	case F_RDLCK:
+	case F_WRLCK:
+		return generic_add_lease(filp, arg, flp);
+	default:
+		BUG();
+	}
+}
 EXPORT_SYMBOL(generic_setlease);
 
 static int __vfs_setlease(struct file *filp, long arg, struct file_lock **lease)
@@ -2126,7 +2183,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
 		}
 	} else if (IS_LEASE(fl)) {
 		seq_printf(f, "LEASE  ");
-		if (fl->fl_type & F_INPROGRESS)
+		if (lease_breaking(fl))
 			seq_printf(f, "BREAKING  ");
 		else if (fl->fl_file)
 			seq_printf(f, "ACTIVE    ");
@@ -2142,7 +2199,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
 			       : (fl->fl_type & LOCK_WRITE) ? "WRITE" : "NONE ");
 	} else {
 		seq_printf(f, "%s ",
-			       (fl->fl_type & F_INPROGRESS)
+			       (lease_breaking(fl))
 			       ? (fl->fl_type & F_UNLCK) ? "UNLCK" : "READ "
 			       : (fl->fl_type & F_WRLCK) ? "WRITE" : "READ ");
 	}
diff --git a/fs/namei.c b/fs/namei.c
index 2826db35dc25..0b3138de2a3b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -721,31 +721,22 @@ static int follow_automount(struct path *path, unsigned flags,
 	if (!path->dentry->d_op || !path->dentry->d_op->d_automount)
 		return -EREMOTE;
 
-	/* We don't want to mount if someone supplied AT_NO_AUTOMOUNT
-	 * and this is the terminal part of the path.
+	/* We don't want to mount if someone's just doing a stat -
+	 * unless they're stat'ing a directory and appended a '/' to
+	 * the name.
+	 *
+	 * We do, however, want to mount if someone wants to open or
+	 * create a file of any type under the mountpoint, wants to
+	 * traverse through the mountpoint or wants to open the
+	 * mounted directory.  Also, autofs may mark negative dentries
+	 * as being automount points.  These will need the attentions
+	 * of the daemon to instantiate them before they can be used.
 	 */
-	if ((flags & LOOKUP_NO_AUTOMOUNT) && !(flags & LOOKUP_PARENT))
-		return -EISDIR; /* we actually want to stop here */
+	if (!(flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY |
+		     LOOKUP_OPEN | LOOKUP_CREATE | LOOKUP_AUTOMOUNT)) &&
+	    path->dentry->d_inode)
+		return -EISDIR;
 
-	/*
-	 * We don't want to mount if someone's just doing a stat and they've
-	 * set AT_SYMLINK_NOFOLLOW - unless they're stat'ing a directory and
-	 * appended a '/' to the name.
-	 */
-	if (!(flags & LOOKUP_FOLLOW)) {
-		/* We do, however, want to mount if someone wants to open or
-		 * create a file of any type under the mountpoint, wants to
-		 * traverse through the mountpoint or wants to open the mounted
-		 * directory.
-		 * Also, autofs may mark negative dentries as being automount
-		 * points.  These will need the attentions of the daemon to
-		 * instantiate them before they can be used.
-		 */
-		if (!(flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY |
-			     LOOKUP_OPEN | LOOKUP_CREATE)) &&
-		    path->dentry->d_inode)
-			return -EISDIR;
-	}
 	current->total_link_count++;
 	if (current->total_link_count >= 40)
 		return -ELOOP;
@@ -2619,6 +2610,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
 	if (!dir->i_op->rmdir)
 		return -EPERM;
 
+	dget(dentry);
 	mutex_lock(&dentry->d_inode->i_mutex);
 
 	error = -EBUSY;
@@ -2639,6 +2631,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
 
 out:
 	mutex_unlock(&dentry->d_inode->i_mutex);
+	dput(dentry);
 	if (!error)
 		d_delete(dentry);
 	return error;
@@ -3028,6 +3021,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
 	if (error)
 		return error;
 
+	dget(new_dentry);
 	if (target)
 		mutex_lock(&target->i_mutex);
 
@@ -3048,6 +3042,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
 out:
 	if (target)
 		mutex_unlock(&target->i_mutex);
+	dput(new_dentry);
 	if (!error)
 		if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
 			d_move(old_dentry,new_dentry);
diff --git a/fs/namespace.c b/fs/namespace.c
index 22bfe8273c68..b4febb29d3bb 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1757,7 +1757,7 @@ static int do_loopback(struct path *path, char *old_name,
 		return err;
 	if (!old_name || !*old_name)
 		return -EINVAL;
-	err = kern_path(old_name, LOOKUP_FOLLOW, &old_path);
+	err = kern_path(old_name, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &old_path);
 	if (err)
 		return err;
 
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index be020771c6b4..dbcd82126aed 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -79,12 +79,9 @@ config NFS_V4_1
 	depends on NFS_FS && NFS_V4 && EXPERIMENTAL
 	select SUNRPC_BACKCHANNEL
 	select PNFS_FILE_LAYOUT
-	select PNFS_BLOCK
-	select MD
-	select BLK_DEV_DM
 	help
 	  This option enables support for minor version 1 of the NFSv4 protocol
-	  (RFC 5661 and RFC 5663) in the kernel's NFS client.
+	  (RFC 5661) in the kernel's NFS client.
 
 	  If unsure, say N.
 
@@ -93,16 +90,13 @@ config PNFS_FILE_LAYOUT
 
 config PNFS_BLOCK
 	tristate
+	depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM
+	default m
 
 config PNFS_OBJLAYOUT
-	tristate "Provide support for the pNFS Objects Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"
+	tristate
 	depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD
-	help
-	  Say M here if you want your pNFS client to support the Objects Layout Driver.
-	  Requires the SCSI osd initiator library (SCSI_OSD_INITIATOR) and
-	  upper level driver (SCSI_OSD_ULD).
-
-	  If unsure, say N.
+	default m
 
 config ROOT_NFS
 	bool "Root file system on NFS"
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index e56564d2ef95..281ae95932c9 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -36,6 +36,7 @@
 #include <linux/namei.h>
 #include <linux/bio.h>		/* struct bio */
 #include <linux/buffer_head.h>	/* various write calls */
+#include <linux/prefetch.h>
 
 #include "blocklayout.h"
 
@@ -175,17 +176,6 @@ retry:
 	return bio;
 }
 
-static void bl_set_lo_fail(struct pnfs_layout_segment *lseg)
-{
-	if (lseg->pls_range.iomode == IOMODE_RW) {
-		dprintk("%s Setting layout IOMODE_RW fail bit\n", __func__);
-		set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
-	} else {
-		dprintk("%s Setting layout IOMODE_READ fail bit\n", __func__);
-		set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
-	}
-}
-
 /* This is basically copied from mpage_end_io_read */
 static void bl_end_io_read(struct bio *bio, int err)
 {
@@ -205,7 +195,7 @@ static void bl_end_io_read(struct bio *bio, int err)
 	if (!uptodate) {
 		if (!rdata->pnfs_error)
 			rdata->pnfs_error = -EIO;
-		bl_set_lo_fail(rdata->lseg);
+		pnfs_set_lo_fail(rdata->lseg);
 	}
 	bio_put(bio);
 	put_parallel(par);
@@ -302,6 +292,7 @@ bl_read_pagelist(struct nfs_read_data *rdata)
 						 bl_end_io_read, par);
 			if (IS_ERR(bio)) {
 				rdata->pnfs_error = PTR_ERR(bio);
+				bio = NULL;
 				goto out;
 			}
 		}
@@ -369,7 +360,7 @@ static void bl_end_io_write_zero(struct bio *bio, int err)
 	if (!uptodate) {
 		if (!wdata->pnfs_error)
 			wdata->pnfs_error = -EIO;
-		bl_set_lo_fail(wdata->lseg);
+		pnfs_set_lo_fail(wdata->lseg);
 	}
 	bio_put(bio);
 	put_parallel(par);
@@ -385,7 +376,7 @@ static void bl_end_io_write(struct bio *bio, int err)
 	if (!uptodate) {
 		if (!wdata->pnfs_error)
 			wdata->pnfs_error = -EIO;
-		bl_set_lo_fail(wdata->lseg);
+		pnfs_set_lo_fail(wdata->lseg);
 	}
 	bio_put(bio);
 	put_parallel(par);
@@ -542,6 +533,11 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
 fill_invalid_ext:
 		dprintk("%s need to zero %d pages\n", __func__, npg_zero);
 		for (;npg_zero > 0; npg_zero--) {
+			if (bl_is_sector_init(be->be_inval, isect)) {
+				dprintk("isect %llu already init\n",
+					(unsigned long long)isect);
+				goto next_page;
+			}
 			/* page ref released in bl_end_io_write_zero */
 			index = isect >> PAGE_CACHE_SECTOR_SHIFT;
 			dprintk("%s zero %dth page: index %lu isect %llu\n",
@@ -561,8 +557,7 @@ fill_invalid_ext:
 			 * PageUptodate: It was read before
 			 * sector_initialized: already written out
 			 */
-			if (PageDirty(page) || PageWriteback(page) ||
-			    bl_is_sector_init(be->be_inval, isect)) {
+			if (PageDirty(page) || PageWriteback(page)) {
 				print_page(page);
 				unlock_page(page);
 				page_cache_release(page);
@@ -591,6 +586,7 @@ fill_invalid_ext:
 						 bl_end_io_write_zero, par);
 			if (IS_ERR(bio)) {
 				wdata->pnfs_error = PTR_ERR(bio);
+				bio = NULL;
 				goto out;
 			}
 			/* FIXME: This should be done in bi_end_io */
@@ -639,6 +635,7 @@ next_page:
 					 bl_end_io_write, par);
 		if (IS_ERR(bio)) {
 			wdata->pnfs_error = PTR_ERR(bio);
+			bio = NULL;
 			goto out;
 		}
 		isect += PAGE_CACHE_SECTORS;
@@ -804,7 +801,7 @@ nfs4_blk_get_deviceinfo(struct nfs_server *server, const struct nfs_fh *fh,
 			struct nfs4_deviceid *d_id)
 {
 	struct pnfs_device *dev;
-	struct pnfs_block_dev *rv = NULL;
+	struct pnfs_block_dev *rv;
 	u32 max_resp_sz;
 	int max_pages;
 	struct page **pages = NULL;
@@ -822,18 +819,20 @@ nfs4_blk_get_deviceinfo(struct nfs_server *server, const struct nfs_fh *fh,
 	dev = kmalloc(sizeof(*dev), GFP_NOFS);
 	if (!dev) {
 		dprintk("%s kmalloc failed\n", __func__);
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	}
 
 	pages = kzalloc(max_pages * sizeof(struct page *), GFP_NOFS);
 	if (pages == NULL) {
 		kfree(dev);
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	}
 	for (i = 0; i < max_pages; i++) {
 		pages[i] = alloc_page(GFP_NOFS);
-		if (!pages[i])
+		if (!pages[i]) {
+			rv = ERR_PTR(-ENOMEM);
 			goto out_free;
+		}
 	}
 
 	memcpy(&dev->dev_id, d_id, sizeof(*d_id));
@@ -846,8 +845,10 @@ nfs4_blk_get_deviceinfo(struct nfs_server *server, const struct nfs_fh *fh,
 	dprintk("%s: dev_id: %s\n", __func__, dev->dev_id.data);
 	rc = nfs4_proc_getdeviceinfo(server, dev);
 	dprintk("%s getdevice info returns %d\n", __func__, rc);
-	if (rc)
+	if (rc) {
+		rv = ERR_PTR(rc);
 		goto out_free;
+	}
 
 	rv = nfs4_blk_decode_device(server, dev);
  out_free:
@@ -865,7 +866,7 @@ bl_set_layoutdriver(struct nfs_server *server, const struct nfs_fh *fh)
 	struct pnfs_devicelist *dlist = NULL;
 	struct pnfs_block_dev *bdev;
 	LIST_HEAD(block_disklist);
-	int status = 0, i;
+	int status, i;
 
 	dprintk("%s enter\n", __func__);
 
@@ -897,8 +898,8 @@ bl_set_layoutdriver(struct nfs_server *server, const struct nfs_fh *fh)
 		for (i = 0; i < dlist->num_devs; i++) {
 			bdev = nfs4_blk_get_deviceinfo(server, fh,
 						       &dlist->dev_id[i]);
-			if (!bdev) {
-				status = -ENODEV;
+			if (IS_ERR(bdev)) {
+				status = PTR_ERR(bdev);
 				goto out_error;
 			}
 			spin_lock(&b_mt_id->bm_lock);
@@ -959,7 +960,7 @@ static struct pnfs_layoutdriver_type blocklayout_type = {
 };
 
 static const struct rpc_pipe_ops bl_upcall_ops = {
-	.upcall		= bl_pipe_upcall,
+	.upcall		= rpc_pipe_generic_upcall,
 	.downcall	= bl_pipe_downcall,
 	.destroy_msg	= bl_pipe_destroy_msg,
 };
@@ -988,17 +989,20 @@ static int __init nfs4blocklayout_init(void)
 			      mnt,
 			      NFS_PIPE_DIRNAME, 0, &path);
 	if (ret)
-		goto out_remove;
+		goto out_putrpc;
 
 	bl_device_pipe = rpc_mkpipe(path.dentry, "blocklayout", NULL,
 				    &bl_upcall_ops, 0);
+	path_put(&path);
 	if (IS_ERR(bl_device_pipe)) {
 		ret = PTR_ERR(bl_device_pipe);
-		goto out_remove;
+		goto out_putrpc;
 	}
 out:
 	return ret;
 
+out_putrpc:
+	rpc_put_mount();
 out_remove:
 	pnfs_unregister_layoutdriver(&blocklayout_type);
 	return ret;
@@ -1011,6 +1015,7 @@ static void __exit nfs4blocklayout_exit(void)
 
 	pnfs_unregister_layoutdriver(&blocklayout_type);
 	rpc_unlink(bl_device_pipe);
+	rpc_put_mount();
 }
 
 MODULE_ALIAS("nfs-layouttype4-3");
diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h
index f27d827960a3..42acf7ef5992 100644
--- a/fs/nfs/blocklayout/blocklayout.h
+++ b/fs/nfs/blocklayout/blocklayout.h
@@ -150,7 +150,7 @@ BLK_LSEG2EXT(struct pnfs_layout_segment *lseg)
 }
 
 struct bl_dev_msg {
-	int status;
+	int32_t status;
 	uint32_t major, minor;
 };
 
@@ -169,8 +169,6 @@ extern wait_queue_head_t bl_wq;
 #define BL_DEVICE_REQUEST_ERR          0x2 /* User level process fails */
 
 /* blocklayoutdev.c */
-ssize_t bl_pipe_upcall(struct file *, struct rpc_pipe_msg *,
-		       char __user *, size_t);
 ssize_t bl_pipe_downcall(struct file *, const char __user *, size_t);
 void bl_pipe_destroy_msg(struct rpc_pipe_msg *);
 struct block_device *nfs4_blkdev_get(dev_t dev);
diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c
index a83b393fb01c..d08ba9107fde 100644
--- a/fs/nfs/blocklayout/blocklayoutdev.c
+++ b/fs/nfs/blocklayout/blocklayoutdev.c
@@ -79,28 +79,6 @@ int nfs4_blkdev_put(struct block_device *bdev)
 	return blkdev_put(bdev, FMODE_READ);
 }
 
-/*
- * Shouldn't there be a rpc_generic_upcall() to do this for us?
- */
-ssize_t bl_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
-		       char __user *dst, size_t buflen)
-{
-	char *data = (char *)msg->data + msg->copied;
-	size_t mlen = min(msg->len - msg->copied, buflen);
-	unsigned long left;
-
-	left = copy_to_user(dst, data, mlen);
-	if (left == mlen) {
-		msg->errno = -EFAULT;
-		return -EFAULT;
-	}
-
-	mlen -= left;
-	msg->copied += mlen;
-	msg->errno = 0;
-	return mlen;
-}
-
 static struct bl_dev_msg bl_mount_reply;
 
 ssize_t bl_pipe_downcall(struct file *filp, const char __user *src,
@@ -131,7 +109,7 @@ struct pnfs_block_dev *
 nfs4_blk_decode_device(struct nfs_server *server,
 		       struct pnfs_device *dev)
 {
-	struct pnfs_block_dev *rv = NULL;
+	struct pnfs_block_dev *rv;
 	struct block_device *bd = NULL;
 	struct rpc_pipe_msg msg;
 	struct bl_msg_hdr bl_msg = {
@@ -141,7 +119,7 @@ nfs4_blk_decode_device(struct nfs_server *server,
 	uint8_t *dataptr;
 	DECLARE_WAITQUEUE(wq, current);
 	struct bl_dev_msg *reply = &bl_mount_reply;
-	int offset, len, i;
+	int offset, len, i, rc;
 
 	dprintk("%s CREATING PIPEFS MESSAGE\n", __func__);
 	dprintk("%s: deviceid: %s, mincount: %d\n", __func__, dev->dev_id.data,
@@ -168,8 +146,10 @@ nfs4_blk_decode_device(struct nfs_server *server,
 
 	dprintk("%s CALLING USERSPACE DAEMON\n", __func__);
 	add_wait_queue(&bl_wq, &wq);
-	if (rpc_queue_upcall(bl_device_pipe->d_inode, &msg) < 0) {
+	rc = rpc_queue_upcall(bl_device_pipe->d_inode, &msg);
+	if (rc < 0) {
 		remove_wait_queue(&bl_wq, &wq);
+		rv = ERR_PTR(rc);
 		goto out;
 	}
 
@@ -187,8 +167,9 @@ nfs4_blk_decode_device(struct nfs_server *server,
 
 	bd = nfs4_blkdev_get(MKDEV(reply->major, reply->minor));
 	if (IS_ERR(bd)) {
-		dprintk("%s failed to open device : %ld\n",
-			__func__, PTR_ERR(bd));
+		rc = PTR_ERR(bd);
+		dprintk("%s failed to open device : %d\n", __func__, rc);
+		rv = ERR_PTR(rc);
 		goto out;
 	}
 
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index e3d294269058..516f3375e067 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -125,7 +125,7 @@ nfs4_callback_up(struct svc_serv *serv)
 	else
 		goto out_err;
 
-	return svc_prepare_thread(serv, &serv->sv_pools[0]);
+	return svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
 
 out_err:
 	if (ret == 0)
@@ -199,7 +199,7 @@ nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
 	INIT_LIST_HEAD(&serv->sv_cb_list);
 	spin_lock_init(&serv->sv_cb_lock);
 	init_waitqueue_head(&serv->sv_cb_waitq);
-	rqstp = svc_prepare_thread(serv, &serv->sv_pools[0]);
+	rqstp = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
 	if (IS_ERR(rqstp)) {
 		svc_xprt_put(serv->sv_bc_xprt);
 		serv->sv_bc_xprt = NULL;
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index b257383bb565..07df5f1d85e5 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -38,6 +38,7 @@ enum nfs4_callback_opnum {
 struct cb_process_state {
 	__be32			drc_status;
 	struct nfs_client	*clp;
+	int			slotid;
 };
 
 struct cb_compound_hdr_arg {
@@ -166,7 +167,6 @@ extern unsigned nfs4_callback_layoutrecall(
 	void *dummy, struct cb_process_state *cps);
 
 extern void nfs4_check_drain_bc_complete(struct nfs4_session *ses);
-extern void nfs4_cb_take_slot(struct nfs_client *clp);
 
 struct cb_devicenotifyitem {
 	uint32_t		cbd_notify_type;
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 74780f9f852c..43926add945b 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -348,7 +348,7 @@ validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
 	/* Normal */
 	if (likely(args->csa_sequenceid == slot->seq_nr + 1)) {
 		slot->seq_nr++;
-		return htonl(NFS4_OK);
+		goto out_ok;
 	}
 
 	/* Replay */
@@ -367,11 +367,14 @@ validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
 	/* Wraparound */
 	if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) {
 		slot->seq_nr = 1;
-		return htonl(NFS4_OK);
+		goto out_ok;
 	}
 
 	/* Misordered request */
 	return htonl(NFS4ERR_SEQ_MISORDERED);
+out_ok:
+	tbl->highest_used_slotid = args->csa_slotid;
+	return htonl(NFS4_OK);
 }
 
 /*
@@ -433,26 +436,37 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
 			      struct cb_sequenceres *res,
 			      struct cb_process_state *cps)
 {
+	struct nfs4_slot_table *tbl;
 	struct nfs_client *clp;
 	int i;
 	__be32 status = htonl(NFS4ERR_BADSESSION);
 
-	cps->clp = NULL;
-
 	clp = nfs4_find_client_sessionid(args->csa_addr, &args->csa_sessionid);
 	if (clp == NULL)
 		goto out;
 
+	tbl = &clp->cl_session->bc_slot_table;
+
+	spin_lock(&tbl->slot_tbl_lock);
 	/* state manager is resetting the session */
 	if (test_bit(NFS4_SESSION_DRAINING, &clp->cl_session->session_state)) {
-		status = NFS4ERR_DELAY;
+		spin_unlock(&tbl->slot_tbl_lock);
+		status = htonl(NFS4ERR_DELAY);
+		/* Return NFS4ERR_BADSESSION if we're draining the session
+		 * in order to reset it.
+		 */
+		if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
+			status = htonl(NFS4ERR_BADSESSION);
 		goto out;
 	}
 
 	status = validate_seqid(&clp->cl_session->bc_slot_table, args);
+	spin_unlock(&tbl->slot_tbl_lock);
 	if (status)
 		goto out;
 
+	cps->slotid = args->csa_slotid;
+
 	/*
 	 * Check for pending referring calls.  If a match is found, a
 	 * related callback was received before the response to the original
@@ -469,7 +483,6 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
 	res->csr_slotid = args->csa_slotid;
 	res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
 	res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
-	nfs4_cb_take_slot(clp);
 
 out:
 	cps->clp = clp; /* put in nfs4_callback_compound */
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index c6c86a77e043..918ad647afea 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -754,26 +754,15 @@ static void nfs4_callback_free_slot(struct nfs4_session *session)
 	 * Let the state manager know callback processing done.
 	 * A single slot, so highest used slotid is either 0 or -1
 	 */
-	tbl->highest_used_slotid--;
+	tbl->highest_used_slotid = -1;
 	nfs4_check_drain_bc_complete(session);
 	spin_unlock(&tbl->slot_tbl_lock);
 }
 
-static void nfs4_cb_free_slot(struct nfs_client *clp)
+static void nfs4_cb_free_slot(struct cb_process_state *cps)
 {
-	if (clp && clp->cl_session)
-		nfs4_callback_free_slot(clp->cl_session);
-}
-
-/* A single slot, so highest used slotid is either 0 or -1 */
-void nfs4_cb_take_slot(struct nfs_client *clp)
-{
-	struct nfs4_slot_table *tbl = &clp->cl_session->bc_slot_table;
-
-	spin_lock(&tbl->slot_tbl_lock);
-	tbl->highest_used_slotid++;
-	BUG_ON(tbl->highest_used_slotid != 0);
-	spin_unlock(&tbl->slot_tbl_lock);
+	if (cps->slotid != -1)
+		nfs4_callback_free_slot(cps->clp->cl_session);
 }
 
 #else /* CONFIG_NFS_V4_1 */
@@ -784,7 +773,7 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
 	return htonl(NFS4ERR_MINOR_VERS_MISMATCH);
 }
 
-static void nfs4_cb_free_slot(struct nfs_client *clp)
+static void nfs4_cb_free_slot(struct cb_process_state *cps)
 {
 }
 #endif /* CONFIG_NFS_V4_1 */
@@ -866,6 +855,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r
 	struct cb_process_state cps = {
 		.drc_status = 0,
 		.clp = NULL,
+		.slotid = -1,
 	};
 	unsigned int nops = 0;
 
@@ -906,7 +896,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r
 
 	*hdr_res.status = status;
 	*hdr_res.nops = htonl(nops);
-	nfs4_cb_free_slot(cps.clp);
+	nfs4_cb_free_slot(&cps);
 	nfs_put_client(cps.clp);
 	dprintk("%s: done, status = %u\n", __func__, ntohl(status));
 	return rpc_success;
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 5833fbbf59b0..873bf00d51a2 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -336,11 +336,12 @@ static int nfs_sockaddr_match_ipaddr6(const struct sockaddr *sa1,
 	const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sa1;
 	const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sa2;
 
-	if (ipv6_addr_scope(&sin1->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL &&
-	    sin1->sin6_scope_id != sin2->sin6_scope_id)
+	if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
 		return 0;
+	else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL)
+		return sin1->sin6_scope_id == sin2->sin6_scope_id;
 
-	return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr);
+	return 1;
 }
 #else	/* !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE) */
 static int nfs_sockaddr_match_ipaddr6(const struct sockaddr *sa1,
@@ -1867,6 +1868,10 @@ static int nfs_server_list_show(struct seq_file *m, void *v)
 	/* display one transport per line on subsequent lines */
 	clp = list_entry(v, struct nfs_client, cl_share_link);
 
+	/* Check if the client is initialized */
+	if (clp->cl_cons_state != NFS_CS_READY)
+		return 0;
+
 	seq_printf(m, "v%u %s %s %3d %s\n",
 		   clp->rpc_ops->version,
 		   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 321a66bc3846..7f2654069806 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -240,7 +240,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
 			sizeof(delegation->stateid.data));
 	delegation->type = res->delegation_type;
 	delegation->maxsize = res->maxsize;
-	delegation->change_attr = nfsi->change_attr;
+	delegation->change_attr = inode->i_version;
 	delegation->cred = get_rpccred(cred);
 	delegation->inode = inode;
 	delegation->flags = 1<<NFS_DELEGATION_REFERENCED;
diff --git a/fs/nfs/fscache-index.c b/fs/nfs/fscache-index.c
index 5b1006480bc2..7cf2c4699b08 100644
--- a/fs/nfs/fscache-index.c
+++ b/fs/nfs/fscache-index.c
@@ -212,7 +212,7 @@ static uint16_t nfs_fscache_inode_get_aux(const void *cookie_netfs_data,
 	auxdata.ctime = nfsi->vfs_inode.i_ctime;
 
 	if (NFS_SERVER(&nfsi->vfs_inode)->nfs_client->rpc_ops->version == 4)
-		auxdata.change_attr = nfsi->change_attr;
+		auxdata.change_attr = nfsi->vfs_inode.i_version;
 
 	if (bufmax > sizeof(auxdata))
 		bufmax = sizeof(auxdata);
@@ -244,7 +244,7 @@ enum fscache_checkaux nfs_fscache_inode_check_aux(void *cookie_netfs_data,
 	auxdata.ctime = nfsi->vfs_inode.i_ctime;
 
 	if (NFS_SERVER(&nfsi->vfs_inode)->nfs_client->rpc_ops->version == 4)
-		auxdata.change_attr = nfsi->change_attr;
+		auxdata.change_attr = nfsi->vfs_inode.i_version;
 
 	if (memcmp(data, &auxdata, datalen) != 0)
 		return FSCACHE_CHECKAUX_OBSOLETE;
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index f20801ae0a16..47d1c6ff2d8e 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -336,8 +336,6 @@ struct idmap {
 	struct idmap_hashtable	idmap_group_hash;
 };
 
-static ssize_t idmap_pipe_upcall(struct file *, struct rpc_pipe_msg *,
-				 char __user *, size_t);
 static ssize_t idmap_pipe_downcall(struct file *, const char __user *,
 				   size_t);
 static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
@@ -345,7 +343,7 @@ static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
 static unsigned int fnvhash32(const void *, size_t);
 
 static const struct rpc_pipe_ops idmap_upcall_ops = {
-	.upcall		= idmap_pipe_upcall,
+	.upcall		= rpc_pipe_generic_upcall,
 	.downcall	= idmap_pipe_downcall,
 	.destroy_msg	= idmap_pipe_destroy_msg,
 };
@@ -595,27 +593,6 @@ nfs_idmap_name(struct idmap *idmap, struct idmap_hashtable *h,
 	return ret;
 }
 
-/* RPC pipefs upcall/downcall routines */
-static ssize_t
-idmap_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
-		  char __user *dst, size_t buflen)
-{
-	char *data = (char *)msg->data + msg->copied;
-	size_t mlen = min(msg->len, buflen);
-	unsigned long left;
-
-	left = copy_to_user(dst, data, mlen);
-	if (left == mlen) {
-		msg->errno = -EFAULT;
-		return -EFAULT;
-	}
-
-	mlen -= left;
-	msg->copied += mlen;
-	msg->errno = 0;
-	return mlen;
-}
-
 static ssize_t
 idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 {
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index fe1203797b2b..4dc6d078f108 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -318,7 +318,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 		memset(&inode->i_atime, 0, sizeof(inode->i_atime));
 		memset(&inode->i_mtime, 0, sizeof(inode->i_mtime));
 		memset(&inode->i_ctime, 0, sizeof(inode->i_ctime));
-		nfsi->change_attr = 0;
+		inode->i_version = 0;
 		inode->i_size = 0;
 		inode->i_nlink = 0;
 		inode->i_uid = -2;
@@ -344,7 +344,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 				| NFS_INO_INVALID_ACCESS
 				| NFS_INO_INVALID_ACL;
 		if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
-			nfsi->change_attr = fattr->change_attr;
+			inode->i_version = fattr->change_attr;
 		else if (nfs_server_capable(inode, NFS_CAP_CHANGE_ATTR))
 			nfsi->cache_validity |= NFS_INO_INVALID_ATTR
 				| NFS_INO_INVALID_DATA;
@@ -897,8 +897,8 @@ static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr
 
 	if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE)
 			&& (fattr->valid & NFS_ATTR_FATTR_CHANGE)
-			&& nfsi->change_attr == fattr->pre_change_attr) {
-		nfsi->change_attr = fattr->change_attr;
+			&& inode->i_version == fattr->pre_change_attr) {
+		inode->i_version = fattr->change_attr;
 		if (S_ISDIR(inode->i_mode))
 			nfsi->cache_validity |= NFS_INO_INVALID_DATA;
 		ret |= NFS_INO_INVALID_ATTR;
@@ -952,7 +952,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
 		return -EIO;
 
 	if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
-			nfsi->change_attr != fattr->change_attr)
+			inode->i_version != fattr->change_attr)
 		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
 
 	/* Verify a few of the more important attributes */
@@ -1163,7 +1163,7 @@ int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fa
 	}
 	if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
 			(fattr->valid & NFS_ATTR_FATTR_PRECHANGE) == 0) {
-		fattr->pre_change_attr = NFS_I(inode)->change_attr;
+		fattr->pre_change_attr = inode->i_version;
 		fattr->valid |= NFS_ATTR_FATTR_PRECHANGE;
 	}
 	if ((fattr->valid & NFS_ATTR_FATTR_CTIME) != 0 &&
@@ -1244,13 +1244,13 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 
 	/* More cache consistency checks */
 	if (fattr->valid & NFS_ATTR_FATTR_CHANGE) {
-		if (nfsi->change_attr != fattr->change_attr) {
+		if (inode->i_version != fattr->change_attr) {
 			dprintk("NFS: change_attr change on server for file %s/%ld\n",
 					inode->i_sb->s_id, inode->i_ino);
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
 			if (S_ISDIR(inode->i_mode))
 				nfs_force_lookup_revalidate(inode);
-			nfsi->change_attr = fattr->change_attr;
+			inode->i_version = fattr->change_attr;
 		}
 	} else if (server->caps & NFS_CAP_CHANGE_ATTR)
 		invalid |= save_cache_validity;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index ab12913dd473..c1a1bd8ddf1c 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -457,13 +457,3 @@ unsigned int nfs_page_array_len(unsigned int base, size_t len)
 		PAGE_SIZE - 1) >> PAGE_SHIFT;
 }
 
-/*
- * Helper for restarting RPC calls in the possible presence of NFSv4.1
- * sessions.
- */
-static inline int nfs_restart_rpc(struct rpc_task *task, const struct nfs_client *clp)
-{
-	if (nfs4_has_session(clp))
-		return rpc_restart_call_prepare(task);
-	return rpc_restart_call(task);
-}
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 1ec1a85fa71c..693ae22f8731 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -13,30 +13,6 @@
 
 struct idmap;
 
-/*
- * In a seqid-mutating op, this macro controls which error return
- * values trigger incrementation of the seqid.
- *
- * from rfc 3010:
- * The client MUST monotonically increment the sequence number for the
- * CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
- * operations.  This is true even in the event that the previous
- * operation that used the sequence number received an error.  The only
- * exception to this rule is if the previous operation received one of
- * the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
- * NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
- * NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
- *
- */
-#define seqid_mutating_err(err)       \
-(((err) != NFSERR_STALE_CLIENTID) &&  \
- ((err) != NFSERR_STALE_STATEID)  &&  \
- ((err) != NFSERR_BAD_STATEID)    &&  \
- ((err) != NFSERR_BAD_SEQID)      &&  \
- ((err) != NFSERR_BAD_XDR)        &&  \
- ((err) != NFSERR_RESOURCE)       &&  \
- ((err) != NFSERR_NOFILEHANDLE))
-
 enum nfs4_client_state {
 	NFS4CLNT_MANAGER_RUNNING  = 0,
 	NFS4CLNT_CHECK_LEASE,
@@ -56,6 +32,9 @@ enum nfs4_session_state {
 	NFS4_SESSION_DRAINING,
 };
 
+#define NFS4_RENEW_TIMEOUT		0x01
+#define NFS4_RENEW_DELEGATION_CB	0x02
+
 struct nfs4_minor_version_ops {
 	u32	minor_version;
 
@@ -225,7 +204,7 @@ struct nfs4_state_recovery_ops {
 };
 
 struct nfs4_state_maintenance_ops {
-	int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *);
+	int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned);
 	struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *);
 	int (*renew_lease)(struct nfs_client *, struct rpc_cred *);
 };
@@ -237,8 +216,6 @@ extern const struct inode_operations nfs4_dir_inode_operations;
 extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
 extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
 extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
-extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
-extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
 extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
 extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
 extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc);
@@ -349,6 +326,7 @@ extern void nfs4_close_sync(struct nfs4_state *, fmode_t);
 extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
 extern void nfs4_schedule_lease_recovery(struct nfs_client *);
 extern void nfs4_schedule_state_manager(struct nfs_client *);
+extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp);
 extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *);
 extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
 extern void nfs41_handle_recall_slot(struct nfs_client *clp);
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index e8915d4840ad..09119418402f 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -77,19 +77,6 @@ filelayout_get_dserver_offset(struct pnfs_layout_segment *lseg, loff_t offset)
 	BUG();
 }
 
-/* For data server errors we don't recover from */
-static void
-filelayout_set_lo_fail(struct pnfs_layout_segment *lseg)
-{
-	if (lseg->pls_range.iomode == IOMODE_RW) {
-		dprintk("%s Setting layout IOMODE_RW fail bit\n", __func__);
-		set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
-	} else {
-		dprintk("%s Setting layout IOMODE_READ fail bit\n", __func__);
-		set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
-	}
-}
-
 static int filelayout_async_handle_error(struct rpc_task *task,
 					 struct nfs4_state *state,
 					 struct nfs_client *clp,
@@ -135,7 +122,6 @@ static int filelayout_async_handle_error(struct rpc_task *task,
 static int filelayout_read_done_cb(struct rpc_task *task,
 				struct nfs_read_data *data)
 {
-	struct nfs_client *clp = data->ds_clp;
 	int reset = 0;
 
 	dprintk("%s DS read\n", __func__);
@@ -145,11 +131,10 @@ static int filelayout_read_done_cb(struct rpc_task *task,
 		dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
 			__func__, data->ds_clp, data->ds_clp->cl_session);
 		if (reset) {
-			filelayout_set_lo_fail(data->lseg);
+			pnfs_set_lo_fail(data->lseg);
 			nfs4_reset_read(task, data);
-			clp = NFS_SERVER(data->inode)->nfs_client;
 		}
-		nfs_restart_rpc(task, clp);
+		rpc_restart_call_prepare(task);
 		return -EAGAIN;
 	}
 
@@ -216,17 +201,13 @@ static int filelayout_write_done_cb(struct rpc_task *task,
 
 	if (filelayout_async_handle_error(task, data->args.context->state,
 					  data->ds_clp, &reset) == -EAGAIN) {
-		struct nfs_client *clp;
-
 		dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
 			__func__, data->ds_clp, data->ds_clp->cl_session);
 		if (reset) {
-			filelayout_set_lo_fail(data->lseg);
+			pnfs_set_lo_fail(data->lseg);
 			nfs4_reset_write(task, data);
-			clp = NFS_SERVER(data->inode)->nfs_client;
-		} else
-			clp = data->ds_clp;
-		nfs_restart_rpc(task, clp);
+		}
+		rpc_restart_call_prepare(task);
 		return -EAGAIN;
 	}
 
@@ -256,9 +237,9 @@ static int filelayout_commit_done_cb(struct rpc_task *task,
 			__func__, data->ds_clp, data->ds_clp->cl_session);
 		if (reset) {
 			prepare_to_resend_writes(data);
-			filelayout_set_lo_fail(data->lseg);
+			pnfs_set_lo_fail(data->lseg);
 		} else
-			nfs_restart_rpc(task, data->ds_clp);
+			rpc_restart_call_prepare(task);
 		return -EAGAIN;
 	}
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 8c77039e7a81..d2ae413c986a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -73,9 +73,6 @@ static int _nfs4_proc_open(struct nfs4_opendata *data);
 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
-static int _nfs4_proc_lookup(struct rpc_clnt *client, struct inode *dir,
-			     const struct qstr *name, struct nfs_fh *fhandle,
-			     struct nfs_fattr *fattr);
 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 			    struct nfs_fattr *fattr, struct iattr *sattr,
@@ -753,9 +750,9 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
 
 	spin_lock(&dir->i_lock);
 	nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
-	if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
+	if (!cinfo->atomic || cinfo->before != dir->i_version)
 		nfs_force_lookup_revalidate(dir);
-	nfsi->change_attr = cinfo->after;
+	dir->i_version = cinfo->after;
 	spin_unlock(&dir->i_lock);
 }
 
@@ -1596,8 +1593,14 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
 	int status;
 
 	status = nfs4_run_open_task(data, 0);
-	if (status != 0 || !data->rpc_done)
+	if (!data->rpc_done)
+		return status;
+	if (status != 0) {
+		if (status == -NFS4ERR_BADNAME &&
+				!(o_arg->open_flags & O_CREAT))
+			return -ENOENT;
 		return status;
+	}
 
 	if (o_arg->open_flags & O_CREAT) {
 		update_changeattr(dir, &o_res->cinfo);
@@ -2408,14 +2411,15 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 	return status;
 }
 
-static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server,
-		const struct nfs_fh *dirfh, const struct qstr *name,
-		struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
+		const struct qstr *name, struct nfs_fh *fhandle,
+		struct nfs_fattr *fattr)
 {
+	struct nfs_server *server = NFS_SERVER(dir);
 	int		       status;
 	struct nfs4_lookup_arg args = {
 		.bitmask = server->attr_bitmask,
-		.dir_fh = dirfh,
+		.dir_fh = NFS_FH(dir),
 		.name = name,
 	};
 	struct nfs4_lookup_res res = {
@@ -2431,40 +2435,8 @@ static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server,
 
 	nfs_fattr_init(fattr);
 
-	dprintk("NFS call  lookupfh %s\n", name->name);
-	status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
-	dprintk("NFS reply lookupfh: %d\n", status);
-	return status;
-}
-
-static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
-			      struct qstr *name, struct nfs_fh *fhandle,
-			      struct nfs_fattr *fattr)
-{
-	struct nfs4_exception exception = { };
-	int err;
-	do {
-		err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr);
-		/* FIXME: !!!! */
-		if (err == -NFS4ERR_MOVED) {
-			err = -EREMOTE;
-			break;
-		}
-		err = nfs4_handle_exception(server, err, &exception);
-	} while (exception.retry);
-	return err;
-}
-
-static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
-		const struct qstr *name, struct nfs_fh *fhandle,
-		struct nfs_fattr *fattr)
-{
-	int status;
-	
 	dprintk("NFS call  lookup %s\n", name->name);
-	status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
-	if (status == -NFS4ERR_MOVED)
-		status = nfs4_get_referral(dir, name, fattr, fhandle);
+	status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
 	dprintk("NFS reply lookup: %d\n", status);
 	return status;
 }
@@ -2485,11 +2457,20 @@ static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qst
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_lookup(clnt, dir, name, fhandle, fattr),
-				&exception);
-		if (err == -EPERM)
+		int status;
+
+		status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr);
+		switch (status) {
+		case -NFS4ERR_BADNAME:
+			return -ENOENT;
+		case -NFS4ERR_MOVED:
+			err = nfs4_get_referral(dir, name, fattr, fhandle);
+			break;
+		case -NFS4ERR_WRONGSEC:
 			nfs_fixup_secinfo_attributes(fattr, fhandle);
+		}
+		err = nfs4_handle_exception(NFS_SERVER(dir),
+				status, &exception);
 	} while (exception.retry);
 	return err;
 }
@@ -3210,7 +3191,7 @@ static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
 	struct nfs_server *server = NFS_SERVER(data->inode);
 
 	if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
-		nfs_restart_rpc(task, server->nfs_client);
+		rpc_restart_call_prepare(task);
 		return -EAGAIN;
 	}
 
@@ -3260,7 +3241,7 @@ static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data
 	struct inode *inode = data->inode;
 	
 	if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
-		nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
+		rpc_restart_call_prepare(task);
 		return -EAGAIN;
 	}
 	if (task->tk_status >= 0) {
@@ -3317,7 +3298,7 @@ static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *dat
 	struct inode *inode = data->inode;
 
 	if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
-		nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
+		rpc_restart_call_prepare(task);
 		return -EAGAIN;
 	}
 	nfs_refresh_inode(inode, data->res.fattr);
@@ -3374,9 +3355,13 @@ static void nfs4_renew_done(struct rpc_task *task, void *calldata)
 
 	if (task->tk_status < 0) {
 		/* Unless we're shutting down, schedule state recovery! */
-		if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
+		if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
+			return;
+		if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
 			nfs4_schedule_lease_recovery(clp);
-		return;
+			return;
+		}
+		nfs4_schedule_path_down_recovery(clp);
 	}
 	do_renew_lease(clp, timestamp);
 }
@@ -3386,7 +3371,7 @@ static const struct rpc_call_ops nfs4_renew_ops = {
 	.rpc_release = nfs4_renew_release,
 };
 
-int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
+static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
 {
 	struct rpc_message msg = {
 		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_RENEW],
@@ -3395,9 +3380,11 @@ int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
 	};
 	struct nfs4_renewdata *data;
 
+	if (renew_flags == 0)
+		return 0;
 	if (!atomic_inc_not_zero(&clp->cl_count))
 		return -EIO;
-	data = kmalloc(sizeof(*data), GFP_KERNEL);
+	data = kmalloc(sizeof(*data), GFP_NOFS);
 	if (data == NULL)
 		return -ENOMEM;
 	data->client = clp;
@@ -3406,7 +3393,7 @@ int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
 			&nfs4_renew_ops, data);
 }
 
-int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
+static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
 {
 	struct rpc_message msg = {
 		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_RENEW],
@@ -3851,7 +3838,7 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
 	default:
 		if (nfs4_async_handle_error(task, data->res.server, NULL) ==
 				-EAGAIN) {
-			nfs_restart_rpc(task, data->res.server->nfs_client);
+			rpc_restart_call_prepare(task);
 			return;
 		}
 	}
@@ -4105,8 +4092,7 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
 			break;
 		default:
 			if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
-				nfs_restart_rpc(task,
-						 calldata->server->nfs_client);
+				rpc_restart_call_prepare(task);
 	}
 }
 
@@ -4939,7 +4925,7 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
 		task->tk_status = 0;
 		/* fall through */
 	case -NFS4ERR_RETRY_UNCACHED_REP:
-		nfs_restart_rpc(task, data->clp);
+		rpc_restart_call_prepare(task);
 		return;
 	}
 	dprintk("<-- %s\n", __func__);
@@ -5504,11 +5490,13 @@ static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_
 	return rpc_run_task(&task_setup_data);
 }
 
-static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred)
+static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
 {
 	struct rpc_task *task;
 	int ret = 0;
 
+	if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
+		return 0;
 	task = _nfs41_proc_sequence(clp, cred);
 	if (IS_ERR(task))
 		ret = PTR_ERR(task);
@@ -5778,7 +5766,7 @@ static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
 
 	server = NFS_SERVER(lrp->args.inode);
 	if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
-		nfs_restart_rpc(task, lrp->clp);
+		rpc_restart_call_prepare(task);
 		return;
 	}
 	spin_lock(&lo->plh_inode->i_lock);
@@ -5949,7 +5937,7 @@ nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
 	}
 
 	if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
-		nfs_restart_rpc(task, server->nfs_client);
+		rpc_restart_call_prepare(task);
 		return;
 	}
 
@@ -6262,7 +6250,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
 	.getroot	= nfs4_proc_get_root,
 	.getattr	= nfs4_proc_getattr,
 	.setattr	= nfs4_proc_setattr,
-	.lookupfh	= nfs4_proc_lookupfh,
 	.lookup		= nfs4_proc_lookup,
 	.access		= nfs4_proc_access,
 	.readlink	= nfs4_proc_readlink,
diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c
index df8e7f3ca56d..dc484c0eae7f 100644
--- a/fs/nfs/nfs4renewd.c
+++ b/fs/nfs/nfs4renewd.c
@@ -60,6 +60,7 @@ nfs4_renew_state(struct work_struct *work)
 	struct rpc_cred *cred;
 	long lease;
 	unsigned long last, now;
+	unsigned renew_flags = 0;
 
 	ops = clp->cl_mvops->state_renewal_ops;
 	dprintk("%s: start\n", __func__);
@@ -72,18 +73,23 @@ nfs4_renew_state(struct work_struct *work)
 	last = clp->cl_last_renewal;
 	now = jiffies;
 	/* Are we close to a lease timeout? */
-	if (time_after(now, last + lease/3)) {
+	if (time_after(now, last + lease/3))
+		renew_flags |= NFS4_RENEW_TIMEOUT;
+	if (nfs_delegations_present(clp))
+		renew_flags |= NFS4_RENEW_DELEGATION_CB;
+
+	if (renew_flags != 0) {
 		cred = ops->get_state_renewal_cred_locked(clp);
 		spin_unlock(&clp->cl_lock);
 		if (cred == NULL) {
-			if (!nfs_delegations_present(clp)) {
+			if (!(renew_flags & NFS4_RENEW_DELEGATION_CB)) {
 				set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
 				goto out;
 			}
 			nfs_expire_all_delegations(clp);
 		} else {
 			/* Queue an asynchronous RENEW. */
-			ops->sched_state_renewal(clp, cred);
+			ops->sched_state_renewal(clp, cred, renew_flags);
 			put_rpccred(cred);
 			goto out_exp;
 		}
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 72ab97ef3d61..39914be40b03 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1038,6 +1038,12 @@ void nfs4_schedule_lease_recovery(struct nfs_client *clp)
 	nfs4_schedule_state_manager(clp);
 }
 
+void nfs4_schedule_path_down_recovery(struct nfs_client *clp)
+{
+	nfs_handle_cb_pathdown(clp);
+	nfs4_schedule_state_manager(clp);
+}
+
 static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
 {
 
diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
index 9383ca7245bc..d0cda12fddc3 100644
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -479,7 +479,6 @@ static int _io_check(struct objio_state *ios, bool is_write)
 	for (i = 0; i <  ios->numdevs; i++) {
 		struct osd_sense_info osi;
 		struct osd_request *or = ios->per_dev[i].or;
-		unsigned dev;
 		int ret;
 
 		if (!or)
@@ -500,9 +499,8 @@ static int _io_check(struct objio_state *ios, bool is_write)
 
 			continue; /* we recovered */
 		}
-		dev = ios->per_dev[i].dev;
-		objlayout_io_set_result(&ios->ol_state, dev,
-					&ios->layout->comps[dev].oc_object_id,
+		objlayout_io_set_result(&ios->ol_state, i,
+					&ios->layout->comps[i].oc_object_id,
 					osd_pri_2_pnfs_err(osi.osd_err_pri),
 					ios->per_dev[i].offset,
 					ios->per_dev[i].length,
@@ -589,22 +587,19 @@ static void _calc_stripe_info(struct objio_state *ios, u64 file_offset,
 }
 
 static int _add_stripe_unit(struct objio_state *ios,  unsigned *cur_pg,
-		unsigned pgbase, struct _objio_per_comp *per_dev, int cur_len,
+		unsigned pgbase, struct _objio_per_comp *per_dev, int len,
 		gfp_t gfp_flags)
 {
 	unsigned pg = *cur_pg;
+	int cur_len = len;
 	struct request_queue *q =
 			osd_request_queue(_io_od(ios, per_dev->dev));
 
-	per_dev->length += cur_len;
-
 	if (per_dev->bio == NULL) {
-		unsigned stripes = ios->layout->num_comps /
-						     ios->layout->mirrors_p1;
-		unsigned pages_in_stripe = stripes *
+		unsigned pages_in_stripe = ios->layout->group_width *
 				      (ios->layout->stripe_unit / PAGE_SIZE);
 		unsigned bio_size = (ios->ol_state.nr_pages + pages_in_stripe) /
-				    stripes;
+				    ios->layout->group_width;
 
 		if (BIO_MAX_PAGES_KMALLOC < bio_size)
 			bio_size = BIO_MAX_PAGES_KMALLOC;
@@ -632,6 +627,7 @@ static int _add_stripe_unit(struct objio_state *ios,  unsigned *cur_pg,
 	}
 	BUG_ON(cur_len);
 
+	per_dev->length += len;
 	*cur_pg = pg;
 	return 0;
 }
@@ -650,7 +646,7 @@ static int _prepare_one_group(struct objio_state *ios, u64 length,
 	int ret = 0;
 
 	while (length) {
-		struct _objio_per_comp *per_dev = &ios->per_dev[dev];
+		struct _objio_per_comp *per_dev = &ios->per_dev[dev - first_dev];
 		unsigned cur_len, page_off = 0;
 
 		if (!per_dev->length) {
@@ -670,8 +666,8 @@ static int _prepare_one_group(struct objio_state *ios, u64 length,
 				cur_len = stripe_unit;
 			}
 
-			if (max_comp < dev)
-				max_comp = dev;
+			if (max_comp < dev - first_dev)
+				max_comp = dev - first_dev;
 		} else {
 			cur_len = stripe_unit;
 		}
@@ -806,7 +802,7 @@ static int _read_mirrors(struct objio_state *ios, unsigned cur_comp)
 	struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp];
 	unsigned dev = per_dev->dev;
 	struct pnfs_osd_object_cred *cred =
-			&ios->layout->comps[dev];
+			&ios->layout->comps[cur_comp];
 	struct osd_obj_id obj = {
 		.partition = cred->oc_object_id.oid_partition_id,
 		.id = cred->oc_object_id.oid_object_id,
@@ -904,7 +900,7 @@ static int _write_mirrors(struct objio_state *ios, unsigned cur_comp)
 	for (; cur_comp < last_comp; ++cur_comp, ++dev) {
 		struct osd_request *or = NULL;
 		struct pnfs_osd_object_cred *cred =
-					&ios->layout->comps[dev];
+					&ios->layout->comps[cur_comp];
 		struct osd_obj_id obj = {
 			.partition = cred->oc_object_id.oid_partition_id,
 			.id = cred->oc_object_id.oid_object_id,
diff --git a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c b/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
index 16fc758e9123..b3918f7ac34d 100644
--- a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
+++ b/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
@@ -170,6 +170,9 @@ int pnfs_osd_xdr_decode_layout_map(struct pnfs_osd_layout *layout,
 	p = _osd_xdr_decode_data_map(p, &layout->olo_map);
 	layout->olo_comps_index = be32_to_cpup(p++);
 	layout->olo_num_comps = be32_to_cpup(p++);
+	dprintk("%s: olo_comps_index=%d olo_num_comps=%d\n", __func__,
+		layout->olo_comps_index, layout->olo_num_comps);
+
 	iter->total_comps = layout->olo_num_comps;
 	return 0;
 }
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index e550e8836c37..ee73d9a4f700 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1168,23 +1168,17 @@ EXPORT_SYMBOL_GPL(pnfs_generic_pg_test);
 /*
  * Called by non rpc-based layout drivers
  */
-int
-pnfs_ld_write_done(struct nfs_write_data *data)
+void pnfs_ld_write_done(struct nfs_write_data *data)
 {
-	int status;
-
-	if (!data->pnfs_error) {
+	if (likely(!data->pnfs_error)) {
 		pnfs_set_layoutcommit(data);
 		data->mds_ops->rpc_call_done(&data->task, data);
-		data->mds_ops->rpc_release(data);
-		return 0;
+	} else {
+		put_lseg(data->lseg);
+		data->lseg = NULL;
+		dprintk("pnfs write error = %d\n", data->pnfs_error);
 	}
-
-	dprintk("%s: pnfs_error=%d, retry via MDS\n", __func__,
-		data->pnfs_error);
-	status = nfs_initiate_write(data, NFS_CLIENT(data->inode),
-				    data->mds_ops, NFS_FILE_SYNC);
-	return status ? : -EAGAIN;
+	data->mds_ops->rpc_release(data);
 }
 EXPORT_SYMBOL_GPL(pnfs_ld_write_done);
 
@@ -1268,23 +1262,17 @@ EXPORT_SYMBOL_GPL(pnfs_generic_pg_writepages);
 /*
  * Called by non rpc-based layout drivers
  */
-int
-pnfs_ld_read_done(struct nfs_read_data *data)
+void pnfs_ld_read_done(struct nfs_read_data *data)
 {
-	int status;
-
-	if (!data->pnfs_error) {
+	if (likely(!data->pnfs_error)) {
 		__nfs4_read_done_cb(data);
 		data->mds_ops->rpc_call_done(&data->task, data);
-		data->mds_ops->rpc_release(data);
-		return 0;
+	} else {
+		put_lseg(data->lseg);
+		data->lseg = NULL;
+		dprintk("pnfs write error = %d\n", data->pnfs_error);
 	}
-
-	dprintk("%s: pnfs_error=%d, retry via MDS\n", __func__,
-		data->pnfs_error);
-	status = nfs_initiate_read(data, NFS_CLIENT(data->inode),
-				   data->mds_ops);
-	return status ? : -EAGAIN;
+	data->mds_ops->rpc_release(data);
 }
 EXPORT_SYMBOL_GPL(pnfs_ld_read_done);
 
@@ -1381,6 +1369,18 @@ static void pnfs_list_write_lseg(struct inode *inode, struct list_head *listp)
 	}
 }
 
+void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg)
+{
+	if (lseg->pls_range.iomode == IOMODE_RW) {
+		dprintk("%s Setting layout IOMODE_RW fail bit\n", __func__);
+		set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
+	} else {
+		dprintk("%s Setting layout IOMODE_READ fail bit\n", __func__);
+		set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
+	}
+}
+EXPORT_SYMBOL_GPL(pnfs_set_lo_fail);
+
 void
 pnfs_set_layoutcommit(struct nfs_write_data *wdata)
 {
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 01cbfd54f3cb..1509530cb111 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -178,6 +178,7 @@ int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
 void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *, struct nfs_page *);
 int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc);
 bool pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req);
+void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg);
 int pnfs_layout_process(struct nfs4_layoutget *lgp);
 void pnfs_free_lseg_list(struct list_head *tmp_list);
 void pnfs_destroy_layout(struct nfs_inode *);
@@ -200,8 +201,8 @@ void pnfs_set_layoutcommit(struct nfs_write_data *wdata);
 void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
 int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
 int _pnfs_return_layout(struct inode *);
-int pnfs_ld_write_done(struct nfs_write_data *);
-int pnfs_ld_read_done(struct nfs_read_data *);
+void pnfs_ld_write_done(struct nfs_write_data *);
+void pnfs_ld_read_done(struct nfs_read_data *);
 struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
 					       struct nfs_open_context *ctx,
 					       loff_t pos,
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 2171c043ab08..8b48ec63f722 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -35,16 +35,13 @@ static const struct rpc_call_ops nfs_read_partial_ops;
 static const struct rpc_call_ops nfs_read_full_ops;
 
 static struct kmem_cache *nfs_rdata_cachep;
-static mempool_t *nfs_rdata_mempool;
-
-#define MIN_POOL_READ	(32)
 
 struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
 {
-	struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, GFP_KERNEL);
+	struct nfs_read_data *p;
 
+	p = kmem_cache_zalloc(nfs_rdata_cachep, GFP_KERNEL);
 	if (p) {
-		memset(p, 0, sizeof(*p));
 		INIT_LIST_HEAD(&p->pages);
 		p->npages = pagecount;
 		if (pagecount <= ARRAY_SIZE(p->page_array))
@@ -52,7 +49,7 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
 		else {
 			p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_KERNEL);
 			if (!p->pagevec) {
-				mempool_free(p, nfs_rdata_mempool);
+				kmem_cache_free(nfs_rdata_cachep, p);
 				p = NULL;
 			}
 		}
@@ -64,7 +61,7 @@ void nfs_readdata_free(struct nfs_read_data *p)
 {
 	if (p && (p->pagevec != &p->page_array[0]))
 		kfree(p->pagevec);
-	mempool_free(p, nfs_rdata_mempool);
+	kmem_cache_free(nfs_rdata_cachep, p);
 }
 
 void nfs_readdata_release(struct nfs_read_data *rdata)
@@ -276,7 +273,6 @@ nfs_async_read_error(struct list_head *head)
 	while (!list_empty(head)) {
 		req = nfs_list_entry(head->next);
 		nfs_list_remove_request(req);
-		SetPageError(req->wb_page);
 		nfs_readpage_release(req);
 	}
 }
@@ -322,7 +318,6 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, struct list_head
 		offset += len;
 	} while(nbytes != 0);
 	atomic_set(&req->wb_complete, requests);
-	ClearPageError(page);
 	desc->pg_rpc_callops = &nfs_read_partial_ops;
 	return ret;
 out_bad:
@@ -331,7 +326,6 @@ out_bad:
 		list_del(&data->list);
 		nfs_readdata_free(data);
 	}
-	SetPageError(page);
 	nfs_readpage_release(req);
 	return -ENOMEM;
 }
@@ -357,7 +351,6 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, struct list_head *
 		req = nfs_list_entry(head->next);
 		nfs_list_remove_request(req);
 		nfs_list_add_request(req, &data->pages);
-		ClearPageError(req->wb_page);
 		*pages++ = req->wb_page;
 	}
 	req = nfs_list_entry(data->pages.next);
@@ -435,7 +428,7 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
 	argp->offset += resp->count;
 	argp->pgbase += resp->count;
 	argp->count -= resp->count;
-	nfs_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
+	rpc_restart_call_prepare(task);
 }
 
 /*
@@ -462,10 +455,10 @@ static void nfs_readpage_release_partial(void *calldata)
 	int status = data->task.tk_status;
 
 	if (status < 0)
-		SetPageError(page);
+		set_bit(PG_PARTIAL_READ_FAILED, &req->wb_flags);
 
 	if (atomic_dec_and_test(&req->wb_complete)) {
-		if (!PageError(page))
+		if (!test_bit(PG_PARTIAL_READ_FAILED, &req->wb_flags))
 			SetPageUptodate(page);
 		nfs_readpage_release(req);
 	}
@@ -541,13 +534,23 @@ static void nfs_readpage_result_full(struct rpc_task *task, void *calldata)
 static void nfs_readpage_release_full(void *calldata)
 {
 	struct nfs_read_data *data = calldata;
+	struct nfs_pageio_descriptor pgio;
 
+	if (data->pnfs_error) {
+		nfs_pageio_init_read_mds(&pgio, data->inode);
+		pgio.pg_recoalesce = 1;
+	}
 	while (!list_empty(&data->pages)) {
 		struct nfs_page *req = nfs_list_entry(data->pages.next);
 
 		nfs_list_remove_request(req);
-		nfs_readpage_release(req);
+		if (!data->pnfs_error)
+			nfs_readpage_release(req);
+		else
+			nfs_pageio_add_request(&pgio, req);
 	}
+	if (data->pnfs_error)
+		nfs_pageio_complete(&pgio);
 	nfs_readdata_release(calldata);
 }
 
@@ -648,7 +651,6 @@ readpage_async_filler(void *data, struct page *page)
 	return 0;
 out_error:
 	error = PTR_ERR(new);
-	SetPageError(page);
 out_unlock:
 	unlock_page(page);
 	return error;
@@ -711,16 +713,10 @@ int __init nfs_init_readpagecache(void)
 	if (nfs_rdata_cachep == NULL)
 		return -ENOMEM;
 
-	nfs_rdata_mempool = mempool_create_slab_pool(MIN_POOL_READ,
-						     nfs_rdata_cachep);
-	if (nfs_rdata_mempool == NULL)
-		return -ENOMEM;
-
 	return 0;
 }
 
 void nfs_destroy_readpagecache(void)
 {
-	mempool_destroy(nfs_rdata_mempool);
 	kmem_cache_destroy(nfs_rdata_cachep);
 }
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index b961ceac66b4..480b3b6bf71e 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -733,18 +733,22 @@ static int nfs_show_options(struct seq_file *m, struct vfsmount *mnt)
 
 	return 0;
 }
+
+#ifdef CONFIG_NFS_V4
 #ifdef CONFIG_NFS_V4_1
-void show_sessions(struct seq_file *m, struct nfs_server *server)
+static void show_sessions(struct seq_file *m, struct nfs_server *server)
 {
 	if (nfs4_has_session(server->nfs_client))
 		seq_printf(m, ",sessions");
 }
 #else
-void show_sessions(struct seq_file *m, struct nfs_server *server) {}
+static void show_sessions(struct seq_file *m, struct nfs_server *server) {}
+#endif
 #endif
 
+#ifdef CONFIG_NFS_V4
 #ifdef CONFIG_NFS_V4_1
-void show_pnfs(struct seq_file *m, struct nfs_server *server)
+static void show_pnfs(struct seq_file *m, struct nfs_server *server)
 {
 	seq_printf(m, ",pnfs=");
 	if (server->pnfs_curr_ld)
@@ -752,9 +756,10 @@ void show_pnfs(struct seq_file *m, struct nfs_server *server)
 	else
 		seq_printf(m, "not configured");
 }
-#else  /* CONFIG_NFS_V4_1 */
-void show_pnfs(struct seq_file *m, struct nfs_server *server) {}
-#endif /* CONFIG_NFS_V4_1 */
+#else
+static void show_pnfs(struct seq_file *m, struct nfs_server *server) {}
+#endif
+#endif
 
 static int nfs_show_devname(struct seq_file *m, struct vfsmount *mnt)
 {
@@ -2035,9 +2040,6 @@ static inline void nfs_initialise_sb(struct super_block *sb)
 		sb->s_blocksize = nfs_block_bits(server->wsize,
 						 &sb->s_blocksize_bits);
 
-	if (server->flags & NFS_MOUNT_NOAC)
-		sb->s_flags |= MS_SYNCHRONOUS;
-
 	sb->s_bdi = &server->backing_dev_info;
 
 	nfs_super_set_maxbytes(sb, server->maxfilesize);
@@ -2249,6 +2251,10 @@ static struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
 	if (server->flags & NFS_MOUNT_UNSHARED)
 		compare_super = NULL;
 
+	/* -o noac implies -o sync */
+	if (server->flags & NFS_MOUNT_NOAC)
+		sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	s = sget(fs_type, compare_super, nfs_set_super, &sb_mntdata);
 	if (IS_ERR(s)) {
@@ -2361,6 +2367,10 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags,
 	if (server->flags & NFS_MOUNT_UNSHARED)
 		compare_super = NULL;
 
+	/* -o noac implies -o sync */
+	if (server->flags & NFS_MOUNT_NOAC)
+		sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	s = sget(&nfs_fs_type, compare_super, nfs_set_super, &sb_mntdata);
 	if (IS_ERR(s)) {
@@ -2628,6 +2638,10 @@ nfs4_remote_mount(struct file_system_type *fs_type, int flags,
 	if (server->flags & NFS4_MOUNT_UNSHARED)
 		compare_super = NULL;
 
+	/* -o noac implies -o sync */
+	if (server->flags & NFS_MOUNT_NOAC)
+		sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	s = sget(&nfs4_fs_type, compare_super, nfs_set_super, &sb_mntdata);
 	if (IS_ERR(s)) {
@@ -2789,7 +2803,7 @@ static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt,
 		goto out_put_mnt_ns;
 
 	ret = vfs_path_lookup(root_mnt->mnt_root, root_mnt,
-			export_path, LOOKUP_FOLLOW, &path);
+			export_path, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path);
 
 	nfs_referral_loop_unprotect();
 	put_mnt_ns(ns_private);
@@ -2916,6 +2930,10 @@ nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
 	if (server->flags & NFS4_MOUNT_UNSHARED)
 		compare_super = NULL;
 
+	/* -o noac implies -o sync */
+	if (server->flags & NFS_MOUNT_NOAC)
+		sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	s = sget(&nfs4_fs_type, compare_super, nfs_set_super, &sb_mntdata);
 	if (IS_ERR(s)) {
@@ -3003,6 +3021,10 @@ nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
 	if (server->flags & NFS4_MOUNT_UNSHARED)
 		compare_super = NULL;
 
+	/* -o noac implies -o sync */
+	if (server->flags & NFS_MOUNT_NOAC)
+		sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	s = sget(&nfs4_fs_type, compare_super, nfs_set_super, &sb_mntdata);
 	if (IS_ERR(s)) {
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index b2fbbde58e44..4f9319a2e567 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -87,7 +87,7 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
 	struct inode *dir = data->dir;
 
 	if (!NFS_PROTO(dir)->unlink_done(task, dir))
-		nfs_restart_rpc(task, NFS_SERVER(dir)->nfs_client);
+		rpc_restart_call_prepare(task);
 }
 
 /**
@@ -369,7 +369,7 @@ static void nfs_async_rename_done(struct rpc_task *task, void *calldata)
 	struct dentry *new_dentry = data->new_dentry;
 
 	if (!NFS_PROTO(old_dir)->rename_done(task, old_dir, new_dir)) {
-		nfs_restart_rpc(task, NFS_SERVER(old_dir)->nfs_client);
+		rpc_restart_call_prepare(task);
 		return;
 	}
 
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index b39b37f80913..2219c88d96b2 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -390,7 +390,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
 	error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req);
 	BUG_ON(error);
 	if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE))
-		nfsi->change_attr++;
+		inode->i_version++;
 	set_bit(PG_MAPPED, &req->wb_flags);
 	SetPagePrivate(req->wb_page);
 	set_page_private(req->wb_page, (unsigned long)req);
@@ -428,7 +428,6 @@ static void
 nfs_mark_request_dirty(struct nfs_page *req)
 {
 	__set_page_dirty_nobuffers(req->wb_page);
-	__mark_inode_dirty(req->wb_page->mapping->host, I_DIRTY_DATASYNC);
 }
 
 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
@@ -762,6 +761,8 @@ int nfs_updatepage(struct file *file, struct page *page,
 	status = nfs_writepage_setup(ctx, page, offset, count);
 	if (status < 0)
 		nfs_set_pageerror(page);
+	else
+		__set_page_dirty_nobuffers(page);
 
 	dprintk("NFS:       nfs_updatepage returns %d (isize %lld)\n",
 			status, (long long)i_size_read(inode));
@@ -958,7 +959,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, struct list_head
 		if (!data)
 			goto out_bad;
 		data->pagevec[0] = page;
-		nfs_write_rpcsetup(req, data, wsize, offset, desc->pg_ioflags);
+		nfs_write_rpcsetup(req, data, len, offset, desc->pg_ioflags);
 		list_add(&data->list, res);
 		requests++;
 		nbytes -= len;
@@ -1010,7 +1011,6 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, struct list_head *r
 		req = nfs_list_entry(head->next);
 		nfs_list_remove_request(req);
 		nfs_list_add_request(req, &data->pages);
-		ClearPageError(req->wb_page);
 		*pages++ = req->wb_page;
 	}
 	req = nfs_list_entry(data->pages.next);
@@ -1165,7 +1165,13 @@ static void nfs_writeback_done_full(struct rpc_task *task, void *calldata)
 static void nfs_writeback_release_full(void *calldata)
 {
 	struct nfs_write_data	*data = calldata;
-	int status = data->task.tk_status;
+	int ret, status = data->task.tk_status;
+	struct nfs_pageio_descriptor pgio;
+
+	if (data->pnfs_error) {
+		nfs_pageio_init_write_mds(&pgio, data->inode, FLUSH_STABLE);
+		pgio.pg_recoalesce = 1;
+	}
 
 	/* Update attributes as result of writeback. */
 	while (!list_empty(&data->pages)) {
@@ -1181,6 +1187,11 @@ static void nfs_writeback_release_full(void *calldata)
 			req->wb_bytes,
 			(long long)req_offset(req));
 
+		if (data->pnfs_error) {
+			dprintk(", pnfs error = %d\n", data->pnfs_error);
+			goto next;
+		}
+
 		if (status < 0) {
 			nfs_set_pageerror(page);
 			nfs_context_set_write_error(req->wb_context, status);
@@ -1200,7 +1211,19 @@ remove_request:
 	next:
 		nfs_clear_page_tag_locked(req);
 		nfs_end_page_writeback(page);
+		if (data->pnfs_error) {
+			lock_page(page);
+			nfs_pageio_cond_complete(&pgio, page->index);
+			ret = nfs_page_async_flush(&pgio, page, 0);
+			if (ret) {
+				nfs_set_pageerror(page);
+				dprintk("rewrite to MDS error = %d\n", ret);
+			}
+			unlock_page(page);
+		}
 	}
+	if (data->pnfs_error)
+		nfs_pageio_complete(&pgio);
 	nfs_writedata_release(calldata);
 }
 
@@ -1281,7 +1304,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
 				 */
 				argp->stable = NFS_FILE_SYNC;
 			}
-			nfs_restart_rpc(task, server->nfs_client);
+			rpc_restart_call_prepare(task);
 			return;
 		}
 		if (time_before(complain, jiffies)) {
@@ -1553,6 +1576,10 @@ static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_contr
 	int flags = FLUSH_SYNC;
 	int ret = 0;
 
+	/* no commits means nothing needs to be done */
+	if (!nfsi->ncommit)
+		return ret;
+
 	if (wbc->sync_mode == WB_SYNC_NONE) {
 		/* Don't commit yet if this is a non-blocking flush and there
 		 * are a lot of outstanding writes for this mapping.
@@ -1686,34 +1713,20 @@ out_error:
 int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
 		struct page *page)
 {
-	struct nfs_page *req;
-	int ret;
+	/*
+	 * If PagePrivate is set, then the page is currently associated with
+	 * an in-progress read or write request. Don't try to migrate it.
+	 *
+	 * FIXME: we could do this in principle, but we'll need a way to ensure
+	 *        that we can safely release the inode reference while holding
+	 *        the page lock.
+	 */
+	if (PagePrivate(page))
+		return -EBUSY;
 
 	nfs_fscache_release_page(page, GFP_KERNEL);
 
-	req = nfs_find_and_lock_request(page, false);
-	ret = PTR_ERR(req);
-	if (IS_ERR(req))
-		goto out;
-
-	ret = migrate_page(mapping, newpage, page);
-	if (!req)
-		goto out;
-	if (ret)
-		goto out_unlock;
-	page_cache_get(newpage);
-	spin_lock(&mapping->host->i_lock);
-	req->wb_page = newpage;
-	SetPagePrivate(newpage);
-	set_page_private(newpage, (unsigned long)req);
-	ClearPagePrivate(page);
-	set_page_private(page, 0);
-	spin_unlock(&mapping->host->i_lock);
-	page_cache_release(page);
-out_unlock:
-	nfs_clear_page_tag_locked(req);
-out:
-	return ret;
+	return migrate_page(mapping, newpage, page);
 }
 #endif
 
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index f4cc1e2bfc54..62f3b9074e84 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -16,7 +16,6 @@
 #include <linux/module.h>
 #include <linux/exportfs.h>
 
-#include <linux/nfsd/syscall.h>
 #include <net/ipv6.h>
 
 #include "nfsd.h"
@@ -318,7 +317,6 @@ static void svc_export_put(struct kref *ref)
 	struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
 	path_put(&exp->ex_path);
 	auth_domain_put(exp->ex_client);
-	kfree(exp->ex_pathname);
 	nfsd4_fslocs_free(&exp->ex_fslocs);
 	kfree(exp);
 }
@@ -528,11 +526,6 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
 
 	exp.ex_client = dom;
 
-	err = -ENOMEM;
-	exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
-	if (!exp.ex_pathname)
-		goto out2;
-
 	/* expiry */
 	err = -EINVAL;
 	exp.h.expiry_time = get_expiry(&mesg);
@@ -613,8 +606,6 @@ out4:
 	nfsd4_fslocs_free(&exp.ex_fslocs);
 	kfree(exp.ex_uuid);
 out3:
-	kfree(exp.ex_pathname);
-out2:
 	path_put(&exp.ex_path);
 out1:
 	auth_domain_put(dom);
@@ -678,7 +669,6 @@ static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
 	new->ex_client = item->ex_client;
 	new->ex_path.dentry = dget(item->ex_path.dentry);
 	new->ex_path.mnt = mntget(item->ex_path.mnt);
-	new->ex_pathname = NULL;
 	new->ex_fslocs.locations = NULL;
 	new->ex_fslocs.locations_count = 0;
 	new->ex_fslocs.migrated = 0;
@@ -696,8 +686,6 @@ static void export_update(struct cache_head *cnew, struct cache_head *citem)
 	new->ex_fsid = item->ex_fsid;
 	new->ex_uuid = item->ex_uuid;
 	item->ex_uuid = NULL;
-	new->ex_pathname = item->ex_pathname;
-	item->ex_pathname = NULL;
 	new->ex_fslocs.locations = item->ex_fslocs.locations;
 	item->ex_fslocs.locations = NULL;
 	new->ex_fslocs.locations_count = item->ex_fslocs.locations_count;
@@ -1010,7 +998,7 @@ rqst_exp_parent(struct svc_rqst *rqstp, struct path *path)
 	return exp;
 }
 
-static struct svc_export *find_fsidzero_export(struct svc_rqst *rqstp)
+struct svc_export *rqst_find_fsidzero_export(struct svc_rqst *rqstp)
 {
 	u32 fsidv[2];
 
@@ -1030,7 +1018,7 @@ exp_pseudoroot(struct svc_rqst *rqstp, struct svc_fh *fhp)
 	struct svc_export *exp;
 	__be32 rv;
 
-	exp = find_fsidzero_export(rqstp);
+	exp = rqst_find_fsidzero_export(rqstp);
 	if (IS_ERR(exp))
 		return nfserrno(PTR_ERR(exp));
 	rv = fh_compose(fhp, exp, exp->ex_path.dentry, NULL);
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 02eb4edf0ece..7748d6a18d97 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -39,6 +39,8 @@
 
 #define NFSDDBG_FACILITY                NFSDDBG_PROC
 
+static void nfsd4_mark_cb_fault(struct nfs4_client *, int reason);
+
 #define NFSPROC4_CB_NULL 0
 #define NFSPROC4_CB_COMPOUND 1
 
@@ -351,7 +353,7 @@ static void encode_cb_recall4args(struct xdr_stream *xdr,
 	__be32 *p;
 
 	encode_nfs_cb_opnum4(xdr, OP_CB_RECALL);
-	encode_stateid4(xdr, &dp->dl_stateid);
+	encode_stateid4(xdr, &dp->dl_stid.sc_stateid);
 
 	p = xdr_reserve_space(xdr, 4);
 	*p++ = xdr_zero;			/* truncate */
@@ -460,6 +462,8 @@ static int decode_cb_sequence4resok(struct xdr_stream *xdr,
 	 */
 	status = 0;
 out:
+	if (status)
+		nfsd4_mark_cb_fault(cb->cb_clp, status);
 	return status;
 out_overflow:
 	print_overflow_msg(__func__, xdr);
@@ -686,6 +690,12 @@ static void nfsd4_mark_cb_down(struct nfs4_client *clp, int reason)
 	warn_no_callback_path(clp, reason);
 }
 
+static void nfsd4_mark_cb_fault(struct nfs4_client *clp, int reason)
+{
+	clp->cl_cb_state = NFSD4_CB_FAULT;
+	warn_no_callback_path(clp, reason);
+}
+
 static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs4_client *clp = container_of(calldata, struct nfs4_client, cl_cb_null);
@@ -787,7 +797,7 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
 {
 	struct nfsd4_callback *cb = calldata;
 	struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
-	struct nfs4_client *clp = dp->dl_client;
+	struct nfs4_client *clp = dp->dl_stid.sc_client;
 	u32 minorversion = clp->cl_minorversion;
 
 	cb->cb_minorversion = minorversion;
@@ -809,7 +819,7 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
 {
 	struct nfsd4_callback *cb = calldata;
 	struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
-	struct nfs4_client *clp = dp->dl_client;
+	struct nfs4_client *clp = dp->dl_stid.sc_client;
 
 	dprintk("%s: minorversion=%d\n", __func__,
 		clp->cl_minorversion);
@@ -832,7 +842,7 @@ static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
 {
 	struct nfsd4_callback *cb = calldata;
 	struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
-	struct nfs4_client *clp = dp->dl_client;
+	struct nfs4_client *clp = dp->dl_stid.sc_client;
 	struct rpc_clnt *current_rpc_client = clp->cl_cb_client;
 
 	nfsd4_cb_done(task, calldata);
@@ -1006,7 +1016,7 @@ void nfsd4_do_callback_rpc(struct work_struct *w)
 void nfsd4_cb_recall(struct nfs4_delegation *dp)
 {
 	struct nfsd4_callback *cb = &dp->dl_recall;
-	struct nfs4_client *clp = dp->dl_client;
+	struct nfs4_client *clp = dp->dl_stid.sc_client;
 
 	dp->dl_retries = 1;
 	cb->cb_op = dp;
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index e80777666618..fa383361bc61 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -35,6 +35,7 @@
 #include <linux/file.h>
 #include <linux/slab.h>
 
+#include "idmap.h"
 #include "cache.h"
 #include "xdr4.h"
 #include "vfs.h"
@@ -156,6 +157,8 @@ do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfs
 		!(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
 		return nfserr_inval;
 
+	accmode |= NFSD_MAY_READ_IF_EXEC;
+
 	if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
 		accmode |= NFSD_MAY_READ;
 	if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
@@ -168,12 +171,29 @@ do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfs
 	return status;
 }
 
+static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
+{
+	umode_t mode = fh->fh_dentry->d_inode->i_mode;
+
+	if (S_ISREG(mode))
+		return nfs_ok;
+	if (S_ISDIR(mode))
+		return nfserr_isdir;
+	/*
+	 * Using err_symlink as our catch-all case may look odd; but
+	 * there's no other obvious error for this case in 4.0, and we
+	 * happen to know that it will cause the linux v4 client to do
+	 * the right thing on attempts to open something other than a
+	 * regular file.
+	 */
+	return nfserr_symlink;
+}
+
 static __be32
 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
 {
 	struct svc_fh resfh;
 	__be32 status;
-	int created = 0;
 
 	fh_init(&resfh, NFS4_FHSIZE);
 	open->op_truncate = 0;
@@ -202,7 +222,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
 					open->op_fname.len, &open->op_iattr,
 					&resfh, open->op_createmode,
 					(u32 *)open->op_verf.data,
-					&open->op_truncate, &created);
+					&open->op_truncate, &open->op_created);
 
 		/*
 		 * Following rfc 3530 14.2.16, use the returned bitmask
@@ -216,6 +236,9 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
 		status = nfsd_lookup(rqstp, current_fh,
 				     open->op_fname.data, open->op_fname.len, &resfh);
 		fh_unlock(current_fh);
+		if (status)
+			goto out;
+		status = nfsd_check_obj_isreg(&resfh);
 	}
 	if (status)
 		goto out;
@@ -227,9 +250,9 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
 	fh_dup2(current_fh, &resfh);
 
 	/* set reply cache */
-	fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+	fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
 			&resfh.fh_handle);
-	if (!created)
+	if (!open->op_created)
 		status = do_open_permission(rqstp, current_fh, open,
 					    NFSD_MAY_NOP);
 
@@ -254,7 +277,7 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
 	memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
 
 	/* set replay cache */
-	fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+	fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
 			&current_fh->fh_handle);
 
 	open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
@@ -283,14 +306,18 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	__be32 status;
 	struct nfsd4_compoundres *resp;
 
-	dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
+	dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
 		(int)open->op_fname.len, open->op_fname.data,
-		open->op_stateowner);
+		open->op_openowner);
 
 	/* This check required by spec. */
 	if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
 		return nfserr_inval;
 
+	/* We don't yet support WANT bits: */
+	open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
+
+	open->op_created = 0;
 	/*
 	 * RFC5661 18.51.3
 	 * Before RECLAIM_COMPLETE done, server should deny new lock
@@ -309,7 +336,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	resp = rqstp->rq_resp;
 	status = nfsd4_process_open1(&resp->cstate, open);
 	if (status == nfserr_replay_me) {
-		struct nfs4_replay *rp = &open->op_stateowner->so_replay;
+		struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
 		fh_put(&cstate->current_fh);
 		fh_copy_shallow(&cstate->current_fh.fh_handle,
 				&rp->rp_openfh);
@@ -339,32 +366,23 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	switch (open->op_claim_type) {
 		case NFS4_OPEN_CLAIM_DELEGATE_CUR:
 		case NFS4_OPEN_CLAIM_NULL:
-			/*
-			 * (1) set CURRENT_FH to the file being opened,
-			 * creating it if necessary, (2) set open->op_cinfo,
-			 * (3) set open->op_truncate if the file is to be
-			 * truncated after opening, (4) do permission checking.
-			 */
 			status = do_open_lookup(rqstp, &cstate->current_fh,
 						open);
 			if (status)
 				goto out;
 			break;
 		case NFS4_OPEN_CLAIM_PREVIOUS:
-			open->op_stateowner->so_confirmed = 1;
-			/*
-			 * The CURRENT_FH is already set to the file being
-			 * opened.  (1) set open->op_cinfo, (2) set
-			 * open->op_truncate if the file is to be truncated
-			 * after opening, (3) do permission checking.
-			*/
+			open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
+		case NFS4_OPEN_CLAIM_FH:
+		case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
 			status = do_open_fhandle(rqstp, &cstate->current_fh,
 						 open);
 			if (status)
 				goto out;
 			break;
+		case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
              	case NFS4_OPEN_CLAIM_DELEGATE_PREV:
-			open->op_stateowner->so_confirmed = 1;
+			open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
 			dprintk("NFSD: unsupported OPEN claim type %d\n",
 				open->op_claim_type);
 			status = nfserr_notsupp;
@@ -381,12 +399,13 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
 	 */
 	status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
+	WARN_ON(status && open->op_created);
 out:
-	if (open->op_stateowner) {
-		nfs4_get_stateowner(open->op_stateowner);
-		cstate->replay_owner = open->op_stateowner;
-	}
-	nfs4_unlock_state();
+	nfsd4_cleanup_open_state(open, status);
+	if (open->op_openowner)
+		cstate->replay_owner = &open->op_openowner->oo_owner;
+	else
+		nfs4_unlock_state();
 	return status;
 }
 
@@ -467,17 +486,12 @@ static __be32
 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	     struct nfsd4_commit *commit)
 {
-	__be32 status;
-
 	u32 *p = (u32 *)commit->co_verf.data;
 	*p++ = nfssvc_boot.tv_sec;
 	*p++ = nfssvc_boot.tv_usec;
 
-	status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
+	return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
 			     commit->co_count);
-	if (status == nfserr_symlink)
-		status = nfserr_inval;
-	return status;
 }
 
 static __be32
@@ -492,8 +506,6 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
 			   NFSD_MAY_CREATE);
-	if (status == nfserr_symlink)
-		status = nfserr_notdir;
 	if (status)
 		return status;
 
@@ -691,7 +703,7 @@ nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
 	readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
 
-	if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
+	if ((cookie == 1) || (cookie == 2) ||
 	    (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
 		return nfserr_bad_cookie;
 
@@ -719,8 +731,6 @@ nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		return nfserr_grace;
 	status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
 			     remove->rm_name, remove->rm_namelen);
-	if (status == nfserr_symlink)
-		return nfserr_notdir;
 	if (!status) {
 		fh_unlock(&cstate->current_fh);
 		set_change_info(&remove->rm_cinfo, &cstate->current_fh);
@@ -751,8 +761,6 @@ nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
                   (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
                    S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
 		status = nfserr_exist;
-	else if (status == nfserr_symlink)
-		status = nfserr_notdir;
 
 	if (!status) {
 		set_change_info(&rename->rn_sinfo, &cstate->current_fh);
@@ -892,8 +900,6 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	write->wr_bytes_written = cnt;
 
-	if (status == nfserr_symlink)
-		status = nfserr_inval;
 	return status;
 }
 
@@ -930,7 +936,7 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	count = 4 + (verify->ve_attrlen >> 2);
 	buf = kmalloc(count << 2, GFP_KERNEL);
 	if (!buf)
-		return nfserr_resource;
+		return nfserr_jukebox;
 
 	status = nfsd4_encode_fattr(&cstate->current_fh,
 				    cstate->current_fh.fh_export,
@@ -994,6 +1000,8 @@ static inline void nfsd4_increment_op_stats(u32 opnum)
 
 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
 			      void *);
+typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
+
 enum nfsd4_op_flags {
 	ALLOWED_WITHOUT_FH = 1 << 0,	/* No current filehandle required */
 	ALLOWED_ON_ABSENT_FS = 1 << 1,	/* ops processed on absent fs */
@@ -1001,13 +1009,15 @@ enum nfsd4_op_flags {
 	/* For rfc 5661 section 2.6.3.1.1: */
 	OP_HANDLES_WRONGSEC = 1 << 3,
 	OP_IS_PUTFH_LIKE = 1 << 4,
-};
-
-struct nfsd4_operation {
-	nfsd4op_func op_func;
-	u32 op_flags;
-	char *op_name;
 	/*
+	 * These are the ops whose result size we estimate before
+	 * encoding, to avoid performing an op then not being able to
+	 * respond or cache a response.  This includes writes and setattrs
+	 * as well as the operations usually called "nonidempotent":
+	 */
+	OP_MODIFIES_SOMETHING = 1 << 5,
+	/*
+	 * Cache compounds containing these ops in the xid-based drc:
 	 * We use the DRC for compounds containing non-idempotent
 	 * operations, *except* those that are 4.1-specific (since
 	 * sessions provide their own EOS), and except for stateful
@@ -1015,7 +1025,15 @@ struct nfsd4_operation {
 	 * (since sequence numbers provide EOS for open, lock, etc in
 	 * the v4.0 case).
 	 */
-	bool op_cacheresult;
+	OP_CACHEME = 1 << 6,
+};
+
+struct nfsd4_operation {
+	nfsd4op_func op_func;
+	u32 op_flags;
+	char *op_name;
+	/* Try to get response size before operation */
+	nfsd4op_rsize op_rsize_bop;
 };
 
 static struct nfsd4_operation nfsd4_ops[];
@@ -1062,7 +1080,7 @@ static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
 
 bool nfsd4_cache_this_op(struct nfsd4_op *op)
 {
-	return OPDESC(op)->op_cacheresult;
+	return OPDESC(op)->op_flags & OP_CACHEME;
 }
 
 static bool need_wrongsec_check(struct svc_rqst *rqstp)
@@ -1110,6 +1128,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
 	struct nfsd4_operation *opdesc;
 	struct nfsd4_compound_state *cstate = &resp->cstate;
 	int		slack_bytes;
+	u32		plen = 0;
 	__be32		status;
 
 	resp->xbuf = &rqstp->rq_res;
@@ -1188,6 +1207,15 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
 			goto encode_op;
 		}
 
+		/* If op is non-idempotent */
+		if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
+			plen = opdesc->op_rsize_bop(rqstp, op);
+			op->status = nfsd4_check_resp_size(resp, plen);
+		}
+
+		if (op->status)
+			goto encode_op;
+
 		if (opdesc->op_func)
 			op->status = opdesc->op_func(rqstp, cstate, &op->u);
 		else
@@ -1217,7 +1245,7 @@ encode_op:
 			be32_to_cpu(status));
 
 		if (cstate->replay_owner) {
-			nfs4_put_stateowner(cstate->replay_owner);
+			nfs4_unlock_state();
 			cstate->replay_owner = NULL;
 		}
 		/* XXX Ugh, we need to get rid of this kind of special case: */
@@ -1238,6 +1266,144 @@ out:
 	return status;
 }
 
+#define op_encode_hdr_size		(2)
+#define op_encode_stateid_maxsz		(XDR_QUADLEN(NFS4_STATEID_SIZE))
+#define op_encode_verifier_maxsz	(XDR_QUADLEN(NFS4_VERIFIER_SIZE))
+#define op_encode_change_info_maxsz	(5)
+#define nfs4_fattr_bitmap_maxsz		(4)
+
+#define op_encode_lockowner_maxsz	(1 + XDR_QUADLEN(IDMAP_NAMESZ))
+#define op_encode_lock_denied_maxsz	(8 + op_encode_lockowner_maxsz)
+
+#define nfs4_owner_maxsz		(1 + XDR_QUADLEN(IDMAP_NAMESZ))
+
+#define op_encode_ace_maxsz		(3 + nfs4_owner_maxsz)
+#define op_encode_delegation_maxsz	(1 + op_encode_stateid_maxsz + 1 + \
+					 op_encode_ace_maxsz)
+
+#define op_encode_channel_attrs_maxsz	(6 + 1 + 1)
+
+static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
+}
+
+static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_change_info_maxsz
+		+ nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_change_info_maxsz)
+		* sizeof(__be32);
+}
+
+static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
+		* sizeof(__be32);
+}
+
+static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_stateid_maxsz
+		+ op_encode_change_info_maxsz + 1
+		+ nfs4_fattr_bitmap_maxsz
+		+ op_encode_delegation_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	u32 maxcount = 0, rlen = 0;
+
+	maxcount = svc_max_payload(rqstp);
+	rlen = op->u.read.rd_length;
+
+	if (rlen > maxcount)
+		rlen = maxcount;
+
+	return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
+}
+
+static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	u32 rlen = op->u.readdir.rd_maxcount;
+
+	if (rlen > PAGE_SIZE)
+		rlen = PAGE_SIZE;
+
+	return (op_encode_hdr_size + op_encode_verifier_maxsz)
+		 * sizeof(__be32) + rlen;
+}
+
+static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_change_info_maxsz)
+		* sizeof(__be32);
+}
+
+static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_change_info_maxsz
+		+ op_encode_change_info_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
+		1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
+		2 + /*eir_server_owner.so_minor_id */\
+		/* eir_server_owner.so_major_id<> */\
+		XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
+		/* eir_server_scope<> */\
+		XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
+		1 + /* eir_server_impl_id array length */\
+		0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + \
+		XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
+		2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + \
+		XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
+		2 + /* csr_sequence, csr_flags */\
+		op_encode_channel_attrs_maxsz + \
+		op_encode_channel_attrs_maxsz) * sizeof(__be32);
+}
+
 static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_ACCESS] = {
 		.op_func = (nfsd4op_func)nfsd4_access,
@@ -1245,20 +1411,27 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_CLOSE] = {
 		.op_func = (nfsd4op_func)nfsd4_close,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_CLOSE",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
 	},
 	[OP_COMMIT] = {
 		.op_func = (nfsd4op_func)nfsd4_commit,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_COMMIT",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
 	},
 	[OP_CREATE] = {
 		.op_func = (nfsd4op_func)nfsd4_create,
+		.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
 		.op_name = "OP_CREATE",
-		.op_cacheresult = true,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
 	},
 	[OP_DELEGRETURN] = {
 		.op_func = (nfsd4op_func)nfsd4_delegreturn,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_DELEGRETURN",
+		.op_rsize_bop = nfsd4_only_status_rsize,
 	},
 	[OP_GETATTR] = {
 		.op_func = (nfsd4op_func)nfsd4_getattr,
@@ -1271,12 +1444,16 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_LINK] = {
 		.op_func = (nfsd4op_func)nfsd4_link,
+		.op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
+				| OP_CACHEME,
 		.op_name = "OP_LINK",
-		.op_cacheresult = true,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
 	},
 	[OP_LOCK] = {
 		.op_func = (nfsd4op_func)nfsd4_lock,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_LOCK",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
 	},
 	[OP_LOCKT] = {
 		.op_func = (nfsd4op_func)nfsd4_lockt,
@@ -1284,7 +1461,9 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_LOCKU] = {
 		.op_func = (nfsd4op_func)nfsd4_locku,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_LOCKU",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
 	},
 	[OP_LOOKUP] = {
 		.op_func = (nfsd4op_func)nfsd4_lookup,
@@ -1302,42 +1481,54 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_OPEN] = {
 		.op_func = (nfsd4op_func)nfsd4_open,
-		.op_flags = OP_HANDLES_WRONGSEC,
+		.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_OPEN",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
 	},
 	[OP_OPEN_CONFIRM] = {
 		.op_func = (nfsd4op_func)nfsd4_open_confirm,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_OPEN_CONFIRM",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
 	},
 	[OP_OPEN_DOWNGRADE] = {
 		.op_func = (nfsd4op_func)nfsd4_open_downgrade,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_OPEN_DOWNGRADE",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
 	},
 	[OP_PUTFH] = {
 		.op_func = (nfsd4op_func)nfsd4_putfh,
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
-				| OP_IS_PUTFH_LIKE,
+				| OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_PUTFH",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_PUTPUBFH] = {
 		.op_func = (nfsd4op_func)nfsd4_putrootfh,
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
-				| OP_IS_PUTFH_LIKE,
+				| OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_PUTPUBFH",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_PUTROOTFH] = {
 		.op_func = (nfsd4op_func)nfsd4_putrootfh,
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
-				| OP_IS_PUTFH_LIKE,
+				| OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_PUTROOTFH",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_READ] = {
 		.op_func = (nfsd4op_func)nfsd4_read,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_READ",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
 	},
 	[OP_READDIR] = {
 		.op_func = (nfsd4op_func)nfsd4_readdir,
+		.op_flags = OP_MODIFIES_SOMETHING,
 		.op_name = "OP_READDIR",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
 	},
 	[OP_READLINK] = {
 		.op_func = (nfsd4op_func)nfsd4_readlink,
@@ -1345,29 +1536,36 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_REMOVE] = {
 		.op_func = (nfsd4op_func)nfsd4_remove,
+		.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
 		.op_name = "OP_REMOVE",
-		.op_cacheresult = true,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
 	},
 	[OP_RENAME] = {
-		.op_name = "OP_RENAME",
 		.op_func = (nfsd4op_func)nfsd4_rename,
-		.op_cacheresult = true,
+		.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
+		.op_name = "OP_RENAME",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
 	},
 	[OP_RENEW] = {
 		.op_func = (nfsd4op_func)nfsd4_renew,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_RENEW",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
+
 	},
 	[OP_RESTOREFH] = {
 		.op_func = (nfsd4op_func)nfsd4_restorefh,
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
-				| OP_IS_PUTFH_LIKE,
+				| OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_RESTOREFH",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_SAVEFH] = {
 		.op_func = (nfsd4op_func)nfsd4_savefh,
-		.op_flags = OP_HANDLES_WRONGSEC,
+		.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_SAVEFH",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_SECINFO] = {
 		.op_func = (nfsd4op_func)nfsd4_secinfo,
@@ -1377,19 +1575,22 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_SETATTR] = {
 		.op_func = (nfsd4op_func)nfsd4_setattr,
 		.op_name = "OP_SETATTR",
-		.op_cacheresult = true,
+		.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
 	},
 	[OP_SETCLIENTID] = {
 		.op_func = (nfsd4op_func)nfsd4_setclientid,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+				| OP_MODIFIES_SOMETHING | OP_CACHEME,
 		.op_name = "OP_SETCLIENTID",
-		.op_cacheresult = true,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
 	},
 	[OP_SETCLIENTID_CONFIRM] = {
 		.op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+				| OP_MODIFIES_SOMETHING | OP_CACHEME,
 		.op_name = "OP_SETCLIENTID_CONFIRM",
-		.op_cacheresult = true,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_VERIFY] = {
 		.op_func = (nfsd4op_func)nfsd4_verify,
@@ -1397,35 +1598,46 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_WRITE] = {
 		.op_func = (nfsd4op_func)nfsd4_write,
+		.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
 		.op_name = "OP_WRITE",
-		.op_cacheresult = true,
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
 	},
 	[OP_RELEASE_LOCKOWNER] = {
 		.op_func = (nfsd4op_func)nfsd4_release_lockowner,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_RELEASE_LOCKOWNER",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 
 	/* NFSv4.1 operations */
 	[OP_EXCHANGE_ID] = {
 		.op_func = (nfsd4op_func)nfsd4_exchange_id,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_EXCHANGE_ID",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
 	},
 	[OP_BIND_CONN_TO_SESSION] = {
 		.op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_BIND_CONN_TO_SESSION",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
 	},
 	[OP_CREATE_SESSION] = {
 		.op_func = (nfsd4op_func)nfsd4_create_session,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_CREATE_SESSION",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
 	},
 	[OP_DESTROY_SESSION] = {
 		.op_func = (nfsd4op_func)nfsd4_destroy_session,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_DESTROY_SESSION",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_SEQUENCE] = {
 		.op_func = (nfsd4op_func)nfsd4_sequence,
@@ -1433,14 +1645,17 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_name = "OP_SEQUENCE",
 	},
 	[OP_DESTROY_CLIENTID] = {
-		.op_func = NULL,
-		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+		.op_func = (nfsd4op_func)nfsd4_destroy_clientid,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+				| OP_MODIFIES_SOMETHING,
 		.op_name = "OP_DESTROY_CLIENTID",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_RECLAIM_COMPLETE] = {
 		.op_func = (nfsd4op_func)nfsd4_reclaim_complete,
-		.op_flags = ALLOWED_WITHOUT_FH,
+		.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_RECLAIM_COMPLETE",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_SECINFO_NO_NAME] = {
 		.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
@@ -1454,8 +1669,9 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	},
 	[OP_FREE_STATEID] = {
 		.op_func = (nfsd4op_func)nfsd4_free_stateid,
-		.op_flags = ALLOWED_WITHOUT_FH,
+		.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
 		.op_name = "OP_FREE_STATEID",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 };
 
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 29d77f60585b..ed083b9a731b 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -45,6 +45,7 @@
 
 /* Globals */
 static struct file *rec_file;
+static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
 
 static int
 nfs4_save_creds(const struct cred **original_creds)
@@ -88,7 +89,7 @@ nfs4_make_rec_clidname(char *dname, struct xdr_netobj *clname)
 	struct xdr_netobj cksum;
 	struct hash_desc desc;
 	struct scatterlist sg;
-	__be32 status = nfserr_resource;
+	__be32 status = nfserr_jukebox;
 
 	dprintk("NFSD: nfs4_make_rec_clidname for %.*s\n",
 			clname->len, clname->data);
@@ -129,6 +130,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
 	if (!rec_file || clp->cl_firststate)
 		return 0;
 
+	clp->cl_firststate = 1;
 	status = nfs4_save_creds(&original_cred);
 	if (status < 0)
 		return status;
@@ -143,10 +145,8 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
 		goto out_unlock;
 	}
 	status = -EEXIST;
-	if (dentry->d_inode) {
-		dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
+	if (dentry->d_inode)
 		goto out_put;
-	}
 	status = mnt_want_write(rec_file->f_path.mnt);
 	if (status)
 		goto out_put;
@@ -156,12 +156,14 @@ out_put:
 	dput(dentry);
 out_unlock:
 	mutex_unlock(&dir->d_inode->i_mutex);
-	if (status == 0) {
-		clp->cl_firststate = 1;
+	if (status == 0)
 		vfs_fsync(rec_file, 0);
-	}
+	else
+		printk(KERN_ERR "NFSD: failed to write recovery record"
+				" (err %d); please check that %s exists"
+				" and is writeable", status,
+				user_recovery_dirname);
 	nfs4_reset_creds(original_cred);
-	dprintk("NFSD: nfsd4_create_clid_dir returns %d\n", status);
 	return status;
 }
 
@@ -354,13 +356,13 @@ nfsd4_recdir_load(void) {
  */
 
 void
-nfsd4_init_recdir(char *rec_dirname)
+nfsd4_init_recdir()
 {
 	const struct cred *original_cred;
 	int status;
 
 	printk("NFSD: Using %s as the NFSv4 state recovery directory\n",
-			rec_dirname);
+			user_recovery_dirname);
 
 	BUG_ON(rec_file);
 
@@ -372,10 +374,10 @@ nfsd4_init_recdir(char *rec_dirname)
 		return;
 	}
 
-	rec_file = filp_open(rec_dirname, O_RDONLY | O_DIRECTORY, 0);
+	rec_file = filp_open(user_recovery_dirname, O_RDONLY | O_DIRECTORY, 0);
 	if (IS_ERR(rec_file)) {
 		printk("NFSD: unable to find recovery directory %s\n",
-				rec_dirname);
+				user_recovery_dirname);
 		rec_file = NULL;
 	}
 
@@ -390,3 +392,30 @@ nfsd4_shutdown_recdir(void)
 	fput(rec_file);
 	rec_file = NULL;
 }
+
+/*
+ * Change the NFSv4 recovery directory to recdir.
+ */
+int
+nfs4_reset_recoverydir(char *recdir)
+{
+	int status;
+	struct path path;
+
+	status = kern_path(recdir, LOOKUP_FOLLOW, &path);
+	if (status)
+		return status;
+	status = -ENOTDIR;
+	if (S_ISDIR(path.dentry->d_inode->i_mode)) {
+		strcpy(user_recovery_dirname, recdir);
+		status = 0;
+	}
+	path_put(&path);
+	return status;
+}
+
+char *
+nfs4_recoverydir(void)
+{
+	return user_recovery_dirname;
+}
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 3787ec117400..47e94e33a975 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -49,9 +49,6 @@
 time_t nfsd4_lease = 90;     /* default lease time */
 time_t nfsd4_grace = 90;
 static time_t boot_time;
-static u32 current_ownerid = 1;
-static u32 current_fileid = 1;
-static u32 current_delegid = 1;
 static stateid_t zerostateid;             /* bits all 0 */
 static stateid_t onestateid;              /* bits all 1 */
 static u64 current_sessionid = 1;
@@ -60,13 +57,7 @@ static u64 current_sessionid = 1;
 #define ONE_STATEID(stateid)  (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
 
 /* forward declarations */
-static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
-static struct nfs4_stateid * search_for_stateid(stateid_t *stid);
-static struct nfs4_delegation * search_for_delegation(stateid_t *stid);
-static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
-static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
-static void nfs4_set_recdir(char *recdir);
-static int check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner);
+static int check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner);
 
 /* Locking: */
 
@@ -80,7 +71,8 @@ static DEFINE_MUTEX(client_mutex);
  */
 static DEFINE_SPINLOCK(recall_lock);
 
-static struct kmem_cache *stateowner_slab = NULL;
+static struct kmem_cache *openowner_slab = NULL;
+static struct kmem_cache *lockowner_slab = NULL;
 static struct kmem_cache *file_slab = NULL;
 static struct kmem_cache *stateid_slab = NULL;
 static struct kmem_cache *deleg_slab = NULL;
@@ -112,6 +104,11 @@ opaque_hashval(const void *ptr, int nbytes)
 
 static struct list_head del_recall_lru;
 
+static void nfsd4_free_file(struct nfs4_file *f)
+{
+	kmem_cache_free(file_slab, f);
+}
+
 static inline void
 put_nfs4_file(struct nfs4_file *fi)
 {
@@ -119,7 +116,7 @@ put_nfs4_file(struct nfs4_file *fi)
 		list_del(&fi->fi_hash);
 		spin_unlock(&recall_lock);
 		iput(fi->fi_inode);
-		kmem_cache_free(file_slab, fi);
+		nfsd4_free_file(fi);
 	}
 }
 
@@ -136,35 +133,33 @@ unsigned int max_delegations;
  * Open owner state (share locks)
  */
 
-/* hash tables for nfs4_stateowner */
-#define OWNER_HASH_BITS              8
-#define OWNER_HASH_SIZE             (1 << OWNER_HASH_BITS)
-#define OWNER_HASH_MASK             (OWNER_HASH_SIZE - 1)
+/* hash tables for open owners */
+#define OPEN_OWNER_HASH_BITS              8
+#define OPEN_OWNER_HASH_SIZE             (1 << OPEN_OWNER_HASH_BITS)
+#define OPEN_OWNER_HASH_MASK             (OPEN_OWNER_HASH_SIZE - 1)
 
-#define ownerid_hashval(id) \
-        ((id) & OWNER_HASH_MASK)
-#define ownerstr_hashval(clientid, ownername) \
-        (((clientid) + opaque_hashval((ownername.data), (ownername.len))) & OWNER_HASH_MASK)
+static unsigned int open_ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername)
+{
+	unsigned int ret;
 
-static struct list_head	ownerid_hashtbl[OWNER_HASH_SIZE];
-static struct list_head	ownerstr_hashtbl[OWNER_HASH_SIZE];
+	ret = opaque_hashval(ownername->data, ownername->len);
+	ret += clientid;
+	return ret & OPEN_OWNER_HASH_MASK;
+}
+
+static struct list_head	open_ownerstr_hashtbl[OPEN_OWNER_HASH_SIZE];
 
 /* hash table for nfs4_file */
 #define FILE_HASH_BITS                   8
 #define FILE_HASH_SIZE                  (1 << FILE_HASH_BITS)
 
-/* hash table for (open)nfs4_stateid */
-#define STATEID_HASH_BITS              10
-#define STATEID_HASH_SIZE              (1 << STATEID_HASH_BITS)
-#define STATEID_HASH_MASK              (STATEID_HASH_SIZE - 1)
-
-#define file_hashval(x) \
-        hash_ptr(x, FILE_HASH_BITS)
-#define stateid_hashval(owner_id, file_id)  \
-        (((owner_id) + (file_id)) & STATEID_HASH_MASK)
+static unsigned int file_hashval(struct inode *ino)
+{
+	/* XXX: why are we hashing on inode pointer, anyway? */
+	return hash_ptr(ino, FILE_HASH_BITS);
+}
 
 static struct list_head file_hashtbl[FILE_HASH_SIZE];
-static struct list_head stateid_hashtbl[STATEID_HASH_SIZE];
 
 static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag)
 {
@@ -192,8 +187,15 @@ static void nfs4_file_put_fd(struct nfs4_file *fp, int oflag)
 static void __nfs4_file_put_access(struct nfs4_file *fp, int oflag)
 {
 	if (atomic_dec_and_test(&fp->fi_access[oflag])) {
-		nfs4_file_put_fd(fp, O_RDWR);
 		nfs4_file_put_fd(fp, oflag);
+		/*
+		 * It's also safe to get rid of the RDWR open *if*
+		 * we no longer have need of the other kind of access
+		 * or if we already have the other kind of open:
+		 */
+		if (fp->fi_fds[1-oflag]
+			|| atomic_read(&fp->fi_access[1 - oflag]) == 0)
+			nfs4_file_put_fd(fp, O_RDWR);
 	}
 }
 
@@ -206,8 +208,73 @@ static void nfs4_file_put_access(struct nfs4_file *fp, int oflag)
 		__nfs4_file_put_access(fp, oflag);
 }
 
+static inline int get_new_stid(struct nfs4_stid *stid)
+{
+	static int min_stateid = 0;
+	struct idr *stateids = &stid->sc_client->cl_stateids;
+	int new_stid;
+	int error;
+
+	error = idr_get_new_above(stateids, stid, min_stateid, &new_stid);
+	/*
+	 * Note: the necessary preallocation was done in
+	 * nfs4_alloc_stateid().  The idr code caps the number of
+	 * preallocations that can exist at a time, but the state lock
+	 * prevents anyone from using ours before we get here:
+	 */
+	BUG_ON(error);
+	/*
+	 * It shouldn't be a problem to reuse an opaque stateid value.
+	 * I don't think it is for 4.1.  But with 4.0 I worry that, for
+	 * example, a stray write retransmission could be accepted by
+	 * the server when it should have been rejected.  Therefore,
+	 * adopt a trick from the sctp code to attempt to maximize the
+	 * amount of time until an id is reused, by ensuring they always
+	 * "increase" (mod INT_MAX):
+	 */
+
+	min_stateid = new_stid+1;
+	if (min_stateid == INT_MAX)
+		min_stateid = 0;
+	return new_stid;
+}
+
+static void init_stid(struct nfs4_stid *stid, struct nfs4_client *cl, unsigned char type)
+{
+	stateid_t *s = &stid->sc_stateid;
+	int new_id;
+
+	stid->sc_type = type;
+	stid->sc_client = cl;
+	s->si_opaque.so_clid = cl->cl_clientid;
+	new_id = get_new_stid(stid);
+	s->si_opaque.so_id = (u32)new_id;
+	/* Will be incremented before return to client: */
+	s->si_generation = 0;
+}
+
+static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab)
+{
+	struct idr *stateids = &cl->cl_stateids;
+
+	if (!idr_pre_get(stateids, GFP_KERNEL))
+		return NULL;
+	/*
+	 * Note: if we fail here (or any time between now and the time
+	 * we actually get the new idr), we won't need to undo the idr
+	 * preallocation, since the idr code caps the number of
+	 * preallocated entries.
+	 */
+	return kmem_cache_alloc(slab, GFP_KERNEL);
+}
+
+static struct nfs4_ol_stateid * nfs4_alloc_stateid(struct nfs4_client *clp)
+{
+	return openlockstateid(nfs4_alloc_stid(clp, stateid_slab));
+}
+
 static struct nfs4_delegation *
-alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type)
+alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct svc_fh *current_fh, u32 type)
 {
 	struct nfs4_delegation *dp;
 	struct nfs4_file *fp = stp->st_file;
@@ -224,21 +291,23 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
 		return NULL;
 	if (num_delegations > max_delegations)
 		return NULL;
-	dp = kmem_cache_alloc(deleg_slab, GFP_KERNEL);
+	dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab));
 	if (dp == NULL)
 		return dp;
+	init_stid(&dp->dl_stid, clp, NFS4_DELEG_STID);
+	/*
+	 * delegation seqid's are never incremented.  The 4.1 special
+	 * meaning of seqid 0 isn't meaningful, really, but let's avoid
+	 * 0 anyway just for consistency and use 1:
+	 */
+	dp->dl_stid.sc_stateid.si_generation = 1;
 	num_delegations++;
 	INIT_LIST_HEAD(&dp->dl_perfile);
 	INIT_LIST_HEAD(&dp->dl_perclnt);
 	INIT_LIST_HEAD(&dp->dl_recall_lru);
-	dp->dl_client = clp;
 	get_nfs4_file(fp);
 	dp->dl_file = fp;
 	dp->dl_type = type;
-	dp->dl_stateid.si_boot = boot_time;
-	dp->dl_stateid.si_stateownerid = current_delegid++;
-	dp->dl_stateid.si_fileid = 0;
-	dp->dl_stateid.si_generation = 0;
 	fh_copy_shallow(&dp->dl_fh, &current_fh->fh_handle);
 	dp->dl_time = 0;
 	atomic_set(&dp->dl_count, 1);
@@ -267,10 +336,18 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp)
 	}
 }
 
+static void unhash_stid(struct nfs4_stid *s)
+{
+	struct idr *stateids = &s->sc_client->cl_stateids;
+
+	idr_remove(stateids, s->sc_stateid.si_opaque.so_id);
+}
+
 /* Called under the state lock. */
 static void
 unhash_delegation(struct nfs4_delegation *dp)
 {
+	unhash_stid(&dp->dl_stid);
 	list_del_init(&dp->dl_perclnt);
 	spin_lock(&recall_lock);
 	list_del_init(&dp->dl_perfile);
@@ -292,10 +369,16 @@ static DEFINE_SPINLOCK(client_lock);
 #define CLIENT_HASH_SIZE                (1 << CLIENT_HASH_BITS)
 #define CLIENT_HASH_MASK                (CLIENT_HASH_SIZE - 1)
 
-#define clientid_hashval(id) \
-	((id) & CLIENT_HASH_MASK)
-#define clientstr_hashval(name) \
-	(opaque_hashval((name), 8) & CLIENT_HASH_MASK)
+static unsigned int clientid_hashval(u32 id)
+{
+	return id & CLIENT_HASH_MASK;
+}
+
+static unsigned int clientstr_hashval(const char *name)
+{
+	return opaque_hashval(name, 8) & CLIENT_HASH_MASK;
+}
+
 /*
  * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
  * used in reboot/reset lease grace period processing
@@ -362,7 +445,7 @@ set_deny(unsigned int *deny, unsigned long bmap) {
 }
 
 static int
-test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {
+test_share(struct nfs4_ol_stateid *stp, struct nfsd4_open *open) {
 	unsigned int access, deny;
 
 	set_access(&access, stp->st_access_bmap);
@@ -385,14 +468,13 @@ static int nfs4_access_to_omode(u32 access)
 	BUG();
 }
 
-static void unhash_generic_stateid(struct nfs4_stateid *stp)
+static void unhash_generic_stateid(struct nfs4_ol_stateid *stp)
 {
-	list_del(&stp->st_hash);
 	list_del(&stp->st_perfile);
 	list_del(&stp->st_perstateowner);
 }
 
-static void free_generic_stateid(struct nfs4_stateid *stp)
+static void close_generic_stateid(struct nfs4_ol_stateid *stp)
 {
 	int i;
 
@@ -401,84 +483,106 @@ static void free_generic_stateid(struct nfs4_stateid *stp)
 			if (test_bit(i, &stp->st_access_bmap))
 				nfs4_file_put_access(stp->st_file,
 						nfs4_access_to_omode(i));
+			__clear_bit(i, &stp->st_access_bmap);
 		}
 	}
 	put_nfs4_file(stp->st_file);
+	stp->st_file = NULL;
+}
+
+static void free_generic_stateid(struct nfs4_ol_stateid *stp)
+{
 	kmem_cache_free(stateid_slab, stp);
 }
 
-static void release_lock_stateid(struct nfs4_stateid *stp)
+static void release_lock_stateid(struct nfs4_ol_stateid *stp)
 {
 	struct file *file;
 
 	unhash_generic_stateid(stp);
+	unhash_stid(&stp->st_stid);
 	file = find_any_file(stp->st_file);
 	if (file)
-		locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
+		locks_remove_posix(file, (fl_owner_t)lockowner(stp->st_stateowner));
+	close_generic_stateid(stp);
 	free_generic_stateid(stp);
 }
 
-static void unhash_lockowner(struct nfs4_stateowner *sop)
+static void unhash_lockowner(struct nfs4_lockowner *lo)
 {
-	struct nfs4_stateid *stp;
+	struct nfs4_ol_stateid *stp;
 
-	list_del(&sop->so_idhash);
-	list_del(&sop->so_strhash);
-	list_del(&sop->so_perstateid);
-	while (!list_empty(&sop->so_stateids)) {
-		stp = list_first_entry(&sop->so_stateids,
-				struct nfs4_stateid, st_perstateowner);
+	list_del(&lo->lo_owner.so_strhash);
+	list_del(&lo->lo_perstateid);
+	while (!list_empty(&lo->lo_owner.so_stateids)) {
+		stp = list_first_entry(&lo->lo_owner.so_stateids,
+				struct nfs4_ol_stateid, st_perstateowner);
 		release_lock_stateid(stp);
 	}
 }
 
-static void release_lockowner(struct nfs4_stateowner *sop)
+static void release_lockowner(struct nfs4_lockowner *lo)
 {
-	unhash_lockowner(sop);
-	nfs4_put_stateowner(sop);
+	unhash_lockowner(lo);
+	nfs4_free_lockowner(lo);
 }
 
 static void
-release_stateid_lockowners(struct nfs4_stateid *open_stp)
+release_stateid_lockowners(struct nfs4_ol_stateid *open_stp)
 {
-	struct nfs4_stateowner *lock_sop;
+	struct nfs4_lockowner *lo;
 
 	while (!list_empty(&open_stp->st_lockowners)) {
-		lock_sop = list_entry(open_stp->st_lockowners.next,
-				struct nfs4_stateowner, so_perstateid);
-		/* list_del(&open_stp->st_lockowners);  */
-		BUG_ON(lock_sop->so_is_open_owner);
-		release_lockowner(lock_sop);
+		lo = list_entry(open_stp->st_lockowners.next,
+				struct nfs4_lockowner, lo_perstateid);
+		release_lockowner(lo);
 	}
 }
 
-static void release_open_stateid(struct nfs4_stateid *stp)
+static void unhash_open_stateid(struct nfs4_ol_stateid *stp)
 {
 	unhash_generic_stateid(stp);
 	release_stateid_lockowners(stp);
+	close_generic_stateid(stp);
+}
+
+static void release_open_stateid(struct nfs4_ol_stateid *stp)
+{
+	unhash_open_stateid(stp);
+	unhash_stid(&stp->st_stid);
 	free_generic_stateid(stp);
 }
 
-static void unhash_openowner(struct nfs4_stateowner *sop)
+static void unhash_openowner(struct nfs4_openowner *oo)
 {
-	struct nfs4_stateid *stp;
+	struct nfs4_ol_stateid *stp;
 
-	list_del(&sop->so_idhash);
-	list_del(&sop->so_strhash);
-	list_del(&sop->so_perclient);
-	list_del(&sop->so_perstateid); /* XXX: necessary? */
-	while (!list_empty(&sop->so_stateids)) {
-		stp = list_first_entry(&sop->so_stateids,
-				struct nfs4_stateid, st_perstateowner);
+	list_del(&oo->oo_owner.so_strhash);
+	list_del(&oo->oo_perclient);
+	while (!list_empty(&oo->oo_owner.so_stateids)) {
+		stp = list_first_entry(&oo->oo_owner.so_stateids,
+				struct nfs4_ol_stateid, st_perstateowner);
 		release_open_stateid(stp);
 	}
 }
 
-static void release_openowner(struct nfs4_stateowner *sop)
+static void release_last_closed_stateid(struct nfs4_openowner *oo)
 {
-	unhash_openowner(sop);
-	list_del(&sop->so_close_lru);
-	nfs4_put_stateowner(sop);
+	struct nfs4_ol_stateid *s = oo->oo_last_closed_stid;
+
+	if (s) {
+		unhash_stid(&s->st_stid);
+		free_generic_stateid(s);
+		oo->oo_last_closed_stid = NULL;
+	}
+}
+
+static void release_openowner(struct nfs4_openowner *oo)
+{
+	unhash_openowner(oo);
+	list_del(&oo->oo_close_lru);
+	release_last_closed_stateid(oo);
+	nfs4_free_openowner(oo);
 }
 
 #define SESSION_HASH_SIZE	512
@@ -843,9 +947,6 @@ renew_client_locked(struct nfs4_client *clp)
 		return;
 	}
 
-	/*
-	* Move client to the end to the LRU list.
-	*/
 	dprintk("renewing client (clientid %08x/%08x)\n", 
 			clp->cl_clientid.cl_boot, 
 			clp->cl_clientid.cl_id);
@@ -943,7 +1044,7 @@ unhash_client_locked(struct nfs4_client *clp)
 static void
 expire_client(struct nfs4_client *clp)
 {
-	struct nfs4_stateowner *sop;
+	struct nfs4_openowner *oo;
 	struct nfs4_delegation *dp;
 	struct list_head reaplist;
 
@@ -961,8 +1062,8 @@ expire_client(struct nfs4_client *clp)
 		unhash_delegation(dp);
 	}
 	while (!list_empty(&clp->cl_openowners)) {
-		sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
-		release_openowner(sop);
+		oo = list_entry(clp->cl_openowners.next, struct nfs4_openowner, oo_perclient);
+		release_openowner(oo);
 	}
 	nfsd4_shutdown_callback(clp);
 	if (clp->cl_cb_conn.cb_xprt)
@@ -1038,6 +1139,23 @@ static void gen_confirm(struct nfs4_client *clp)
 	*p++ = i++;
 }
 
+static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t)
+{
+	return idr_find(&cl->cl_stateids, t->si_opaque.so_id);
+}
+
+static struct nfs4_stid *find_stateid_by_type(struct nfs4_client *cl, stateid_t *t, char typemask)
+{
+	struct nfs4_stid *s;
+
+	s = find_stateid(cl, t);
+	if (!s)
+		return NULL;
+	if (typemask & s->sc_type)
+		return s;
+	return NULL;
+}
+
 static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
 		struct svc_rqst *rqstp, nfs4_verifier *verf)
 {
@@ -1060,6 +1178,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
 		}
 	}
 
+	idr_init(&clp->cl_stateids);
 	memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
 	atomic_set(&clp->cl_refcount, 0);
 	clp->cl_cb_state = NFSD4_CB_UNKNOWN;
@@ -1083,17 +1202,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
 	return clp;
 }
 
-static int check_name(struct xdr_netobj name)
-{
-	if (name.len == 0) 
-		return 0;
-	if (name.len > NFS4_OPAQUE_LIMIT) {
-		dprintk("NFSD: check_name: name too long(%d)!\n", name.len);
-		return 0;
-	}
-	return 1;
-}
-
 static void
 add_to_unconfirmed(struct nfs4_client *clp, unsigned int strhashval)
 {
@@ -1125,8 +1233,10 @@ find_confirmed_client(clientid_t *clid)
 	unsigned int idhashval = clientid_hashval(clid->cl_id);
 
 	list_for_each_entry(clp, &conf_id_hashtbl[idhashval], cl_idhash) {
-		if (same_clid(&clp->cl_clientid, clid))
+		if (same_clid(&clp->cl_clientid, clid)) {
+			renew_client(clp);
 			return clp;
+		}
 	}
 	return NULL;
 }
@@ -1173,20 +1283,6 @@ find_unconfirmed_client_by_str(const char *dname, unsigned int hashval)
 	return NULL;
 }
 
-static void rpc_svcaddr2sockaddr(struct sockaddr *sa, unsigned short family, union svc_addr_u *svcaddr)
-{
-	switch (family) {
-	case AF_INET:
-		((struct sockaddr_in *)sa)->sin_family = AF_INET;
-		((struct sockaddr_in *)sa)->sin_addr = svcaddr->addr;
-		return;
-	case AF_INET6:
-		((struct sockaddr_in6 *)sa)->sin6_family = AF_INET6;
-		((struct sockaddr_in6 *)sa)->sin6_addr = svcaddr->addr6;
-		return;
-	}
-}
-
 static void
 gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_rqst *rqstp)
 {
@@ -1218,7 +1314,7 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_r
 
 	conn->cb_prog = se->se_callback_prog;
 	conn->cb_ident = se->se_callback_ident;
-	rpc_svcaddr2sockaddr((struct sockaddr *)&conn->cb_saddr, expected_family, &rqstp->rq_daddr);
+	memcpy(&conn->cb_saddr, &rqstp->rq_daddr, rqstp->rq_daddrlen);
 	return;
 out_err:
 	conn->cb_addr.ss_family = AF_UNSPEC;
@@ -1350,7 +1446,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
 		__func__, rqstp, exid, exid->clname.len, exid->clname.data,
 		addr_str, exid->flags, exid->spa_how);
 
-	if (!check_name(exid->clname) || (exid->flags & ~EXCHGID4_FLAG_MASK_A))
+	if (exid->flags & ~EXCHGID4_FLAG_MASK_A)
 		return nfserr_inval;
 
 	/* Currently only support SP4_NONE */
@@ -1849,8 +1945,16 @@ out:
 
 		nfsd4_get_session(cstate->session);
 		atomic_inc(&clp->cl_refcount);
-		if (clp->cl_cb_state == NFSD4_CB_DOWN)
-			seq->status_flags |= SEQ4_STATUS_CB_PATH_DOWN;
+		switch (clp->cl_cb_state) {
+		case NFSD4_CB_DOWN:
+			seq->status_flags = SEQ4_STATUS_CB_PATH_DOWN;
+			break;
+		case NFSD4_CB_FAULT:
+			seq->status_flags = SEQ4_STATUS_BACKCHANNEL_FAULT;
+			break;
+		default:
+			seq->status_flags = 0;
+		}
 	}
 	kfree(conn);
 	spin_unlock(&client_lock);
@@ -1858,6 +1962,50 @@ out:
 	return status;
 }
 
+static inline bool has_resources(struct nfs4_client *clp)
+{
+	return !list_empty(&clp->cl_openowners)
+		|| !list_empty(&clp->cl_delegations)
+		|| !list_empty(&clp->cl_sessions);
+}
+
+__be32
+nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
+{
+	struct nfs4_client *conf, *unconf, *clp;
+	int status = 0;
+
+	nfs4_lock_state();
+	unconf = find_unconfirmed_client(&dc->clientid);
+	conf = find_confirmed_client(&dc->clientid);
+
+	if (conf) {
+		clp = conf;
+
+		if (!is_client_expired(conf) && has_resources(conf)) {
+			status = nfserr_clientid_busy;
+			goto out;
+		}
+
+		/* rfc5661 18.50.3 */
+		if (cstate->session && conf == cstate->session->se_client) {
+			status = nfserr_clientid_busy;
+			goto out;
+		}
+	} else if (unconf)
+		clp = unconf;
+	else {
+		status = nfserr_stale_clientid;
+		goto out;
+	}
+
+	expire_client(clp);
+out:
+	nfs4_unlock_state();
+	dprintk("%s return %d\n", __func__, ntohl(status));
+	return status;
+}
+
 __be32
 nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc)
 {
@@ -1900,19 +2048,13 @@ __be32
 nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		  struct nfsd4_setclientid *setclid)
 {
-	struct xdr_netobj 	clname = { 
-		.len = setclid->se_namelen,
-		.data = setclid->se_name,
-	};
+	struct xdr_netobj 	clname = setclid->se_name;
 	nfs4_verifier		clverifier = setclid->se_verf;
 	unsigned int 		strhashval;
 	struct nfs4_client	*conf, *unconf, *new;
 	__be32 			status;
 	char                    dname[HEXDIR_LEN];
 	
-	if (!check_name(clname))
-		return nfserr_inval;
-
 	status = nfs4_make_rec_clidname(dname, &clname);
 	if (status)
 		return status;
@@ -1946,7 +2088,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	 * of 5 bullet points, labeled as CASE0 - CASE4 below.
 	 */
 	unconf = find_unconfirmed_client_by_str(dname, strhashval);
-	status = nfserr_resource;
+	status = nfserr_jukebox;
 	if (!conf) {
 		/*
 		 * RFC 3530 14.2.33 CASE 4:
@@ -2116,31 +2258,28 @@ out:
 	return status;
 }
 
+static struct nfs4_file *nfsd4_alloc_file(void)
+{
+	return kmem_cache_alloc(file_slab, GFP_KERNEL);
+}
+
 /* OPEN Share state helper functions */
-static inline struct nfs4_file *
-alloc_init_file(struct inode *ino)
+static void nfsd4_init_file(struct nfs4_file *fp, struct inode *ino)
 {
-	struct nfs4_file *fp;
 	unsigned int hashval = file_hashval(ino);
 
-	fp = kmem_cache_alloc(file_slab, GFP_KERNEL);
-	if (fp) {
-		atomic_set(&fp->fi_ref, 1);
-		INIT_LIST_HEAD(&fp->fi_hash);
-		INIT_LIST_HEAD(&fp->fi_stateids);
-		INIT_LIST_HEAD(&fp->fi_delegations);
-		fp->fi_inode = igrab(ino);
-		fp->fi_id = current_fileid++;
-		fp->fi_had_conflict = false;
-		fp->fi_lease = NULL;
-		memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
-		memset(fp->fi_access, 0, sizeof(fp->fi_access));
-		spin_lock(&recall_lock);
-		list_add(&fp->fi_hash, &file_hashtbl[hashval]);
-		spin_unlock(&recall_lock);
-		return fp;
-	}
-	return NULL;
+	atomic_set(&fp->fi_ref, 1);
+	INIT_LIST_HEAD(&fp->fi_hash);
+	INIT_LIST_HEAD(&fp->fi_stateids);
+	INIT_LIST_HEAD(&fp->fi_delegations);
+	fp->fi_inode = igrab(ino);
+	fp->fi_had_conflict = false;
+	fp->fi_lease = NULL;
+	memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
+	memset(fp->fi_access, 0, sizeof(fp->fi_access));
+	spin_lock(&recall_lock);
+	list_add(&fp->fi_hash, &file_hashtbl[hashval]);
+	spin_unlock(&recall_lock);
 }
 
 static void
@@ -2155,7 +2294,8 @@ nfsd4_free_slab(struct kmem_cache **slab)
 void
 nfsd4_free_slabs(void)
 {
-	nfsd4_free_slab(&stateowner_slab);
+	nfsd4_free_slab(&openowner_slab);
+	nfsd4_free_slab(&lockowner_slab);
 	nfsd4_free_slab(&file_slab);
 	nfsd4_free_slab(&stateid_slab);
 	nfsd4_free_slab(&deleg_slab);
@@ -2164,16 +2304,20 @@ nfsd4_free_slabs(void)
 static int
 nfsd4_init_slabs(void)
 {
-	stateowner_slab = kmem_cache_create("nfsd4_stateowners",
-			sizeof(struct nfs4_stateowner), 0, 0, NULL);
-	if (stateowner_slab == NULL)
+	openowner_slab = kmem_cache_create("nfsd4_openowners",
+			sizeof(struct nfs4_openowner), 0, 0, NULL);
+	if (openowner_slab == NULL)
+		goto out_nomem;
+	lockowner_slab = kmem_cache_create("nfsd4_lockowners",
+			sizeof(struct nfs4_openowner), 0, 0, NULL);
+	if (lockowner_slab == NULL)
 		goto out_nomem;
 	file_slab = kmem_cache_create("nfsd4_files",
 			sizeof(struct nfs4_file), 0, 0, NULL);
 	if (file_slab == NULL)
 		goto out_nomem;
 	stateid_slab = kmem_cache_create("nfsd4_stateids",
-			sizeof(struct nfs4_stateid), 0, 0, NULL);
+			sizeof(struct nfs4_ol_stateid), 0, 0, NULL);
 	if (stateid_slab == NULL)
 		goto out_nomem;
 	deleg_slab = kmem_cache_create("nfsd4_delegations",
@@ -2187,97 +2331,94 @@ out_nomem:
 	return -ENOMEM;
 }
 
-void
-nfs4_free_stateowner(struct kref *kref)
+void nfs4_free_openowner(struct nfs4_openowner *oo)
 {
-	struct nfs4_stateowner *sop =
-		container_of(kref, struct nfs4_stateowner, so_ref);
-	kfree(sop->so_owner.data);
-	kmem_cache_free(stateowner_slab, sop);
+	kfree(oo->oo_owner.so_owner.data);
+	kmem_cache_free(openowner_slab, oo);
 }
 
-static inline struct nfs4_stateowner *
-alloc_stateowner(struct xdr_netobj *owner)
+void nfs4_free_lockowner(struct nfs4_lockowner *lo)
 {
-	struct nfs4_stateowner *sop;
+	kfree(lo->lo_owner.so_owner.data);
+	kmem_cache_free(lockowner_slab, lo);
+}
 
-	if ((sop = kmem_cache_alloc(stateowner_slab, GFP_KERNEL))) {
-		if ((sop->so_owner.data = kmalloc(owner->len, GFP_KERNEL))) {
-			memcpy(sop->so_owner.data, owner->data, owner->len);
-			sop->so_owner.len = owner->len;
-			kref_init(&sop->so_ref);
-			return sop;
-		} 
-		kmem_cache_free(stateowner_slab, sop);
-	}
-	return NULL;
+static void init_nfs4_replay(struct nfs4_replay *rp)
+{
+	rp->rp_status = nfserr_serverfault;
+	rp->rp_buflen = 0;
+	rp->rp_buf = rp->rp_ibuf;
 }
 
-static struct nfs4_stateowner *
-alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
+static inline void *alloc_stateowner(struct kmem_cache *slab, struct xdr_netobj *owner, struct nfs4_client *clp)
+{
 	struct nfs4_stateowner *sop;
-	struct nfs4_replay *rp;
-	unsigned int idhashval;
 
-	if (!(sop = alloc_stateowner(&open->op_owner)))
+	sop = kmem_cache_alloc(slab, GFP_KERNEL);
+	if (!sop)
+		return NULL;
+
+	sop->so_owner.data = kmemdup(owner->data, owner->len, GFP_KERNEL);
+	if (!sop->so_owner.data) {
+		kmem_cache_free(slab, sop);
 		return NULL;
-	idhashval = ownerid_hashval(current_ownerid);
-	INIT_LIST_HEAD(&sop->so_idhash);
-	INIT_LIST_HEAD(&sop->so_strhash);
-	INIT_LIST_HEAD(&sop->so_perclient);
+	}
+	sop->so_owner.len = owner->len;
+
 	INIT_LIST_HEAD(&sop->so_stateids);
-	INIT_LIST_HEAD(&sop->so_perstateid);  /* not used */
-	INIT_LIST_HEAD(&sop->so_close_lru);
-	sop->so_time = 0;
-	list_add(&sop->so_idhash, &ownerid_hashtbl[idhashval]);
-	list_add(&sop->so_strhash, &ownerstr_hashtbl[strhashval]);
-	list_add(&sop->so_perclient, &clp->cl_openowners);
-	sop->so_is_open_owner = 1;
-	sop->so_id = current_ownerid++;
 	sop->so_client = clp;
-	sop->so_seqid = open->op_seqid;
-	sop->so_confirmed = 0;
-	rp = &sop->so_replay;
-	rp->rp_status = nfserr_serverfault;
-	rp->rp_buflen = 0;
-	rp->rp_buf = rp->rp_ibuf;
+	init_nfs4_replay(&sop->so_replay);
 	return sop;
 }
 
-static inline void
-init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
-	struct nfs4_stateowner *sop = open->op_stateowner;
-	unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
+static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, unsigned int strhashval)
+{
+	list_add(&oo->oo_owner.so_strhash, &open_ownerstr_hashtbl[strhashval]);
+	list_add(&oo->oo_perclient, &clp->cl_openowners);
+}
 
-	INIT_LIST_HEAD(&stp->st_hash);
-	INIT_LIST_HEAD(&stp->st_perstateowner);
+static struct nfs4_openowner *
+alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
+	struct nfs4_openowner *oo;
+
+	oo = alloc_stateowner(openowner_slab, &open->op_owner, clp);
+	if (!oo)
+		return NULL;
+	oo->oo_owner.so_is_open_owner = 1;
+	oo->oo_owner.so_seqid = open->op_seqid;
+	oo->oo_flags = NFS4_OO_NEW;
+	oo->oo_time = 0;
+	oo->oo_last_closed_stid = NULL;
+	INIT_LIST_HEAD(&oo->oo_close_lru);
+	hash_openowner(oo, clp, strhashval);
+	return oo;
+}
+
+static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
+	struct nfs4_openowner *oo = open->op_openowner;
+	struct nfs4_client *clp = oo->oo_owner.so_client;
+
+	init_stid(&stp->st_stid, clp, NFS4_OPEN_STID);
 	INIT_LIST_HEAD(&stp->st_lockowners);
-	INIT_LIST_HEAD(&stp->st_perfile);
-	list_add(&stp->st_hash, &stateid_hashtbl[hashval]);
-	list_add(&stp->st_perstateowner, &sop->so_stateids);
+	list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids);
 	list_add(&stp->st_perfile, &fp->fi_stateids);
-	stp->st_stateowner = sop;
+	stp->st_stateowner = &oo->oo_owner;
 	get_nfs4_file(fp);
 	stp->st_file = fp;
-	stp->st_stateid.si_boot = boot_time;
-	stp->st_stateid.si_stateownerid = sop->so_id;
-	stp->st_stateid.si_fileid = fp->fi_id;
-	stp->st_stateid.si_generation = 0;
 	stp->st_access_bmap = 0;
 	stp->st_deny_bmap = 0;
-	__set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
-		  &stp->st_access_bmap);
+	__set_bit(open->op_share_access, &stp->st_access_bmap);
 	__set_bit(open->op_share_deny, &stp->st_deny_bmap);
 	stp->st_openstp = NULL;
 }
 
 static void
-move_to_close_lru(struct nfs4_stateowner *sop)
+move_to_close_lru(struct nfs4_openowner *oo)
 {
-	dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop);
+	dprintk("NFSD: move_to_close_lru nfs4_openowner %p\n", oo);
 
-	list_move_tail(&sop->so_close_lru, &close_lru);
-	sop->so_time = get_seconds();
+	list_move_tail(&oo->oo_close_lru, &close_lru);
+	oo->oo_time = get_seconds();
 }
 
 static int
@@ -2289,14 +2430,18 @@ same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner,
 		(sop->so_client->cl_clientid.cl_id == clid->cl_id);
 }
 
-static struct nfs4_stateowner *
+static struct nfs4_openowner *
 find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
 {
-	struct nfs4_stateowner *so = NULL;
+	struct nfs4_stateowner *so;
+	struct nfs4_openowner *oo;
 
-	list_for_each_entry(so, &ownerstr_hashtbl[hashval], so_strhash) {
-		if (same_owner_str(so, &open->op_owner, &open->op_clientid))
-			return so;
+	list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
+		if (same_owner_str(so, &open->op_owner, &open->op_clientid)) {
+			oo = openowner(so);
+			renew_client(oo->oo_owner.so_client);
+			return oo;
+		}
 	}
 	return NULL;
 }
@@ -2320,31 +2465,6 @@ find_file(struct inode *ino)
 	return NULL;
 }
 
-static inline int access_valid(u32 x, u32 minorversion)
-{
-	if ((x & NFS4_SHARE_ACCESS_MASK) < NFS4_SHARE_ACCESS_READ)
-		return 0;
-	if ((x & NFS4_SHARE_ACCESS_MASK) > NFS4_SHARE_ACCESS_BOTH)
-		return 0;
-	x &= ~NFS4_SHARE_ACCESS_MASK;
-	if (minorversion && x) {
-		if ((x & NFS4_SHARE_WANT_MASK) > NFS4_SHARE_WANT_CANCEL)
-			return 0;
-		if ((x & NFS4_SHARE_WHEN_MASK) > NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED)
-			return 0;
-		x &= ~(NFS4_SHARE_WANT_MASK | NFS4_SHARE_WHEN_MASK);
-	}
-	if (x)
-		return 0;
-	return 1;
-}
-
-static inline int deny_valid(u32 x)
-{
-	/* Note: unlike access bits, deny bits may be zero. */
-	return x <= NFS4_SHARE_DENY_BOTH;
-}
-
 /*
  * Called to check deny when READ with all zero stateid or
  * WRITE with all zero or all one stateid
@@ -2354,7 +2474,7 @@ nfs4_share_conflict(struct svc_fh *current_fh, unsigned int deny_type)
 {
 	struct inode *ino = current_fh->fh_dentry->d_inode;
 	struct nfs4_file *fp;
-	struct nfs4_stateid *stp;
+	struct nfs4_ol_stateid *stp;
 	__be32 ret;
 
 	dprintk("NFSD: nfs4_share_conflict\n");
@@ -2429,6 +2549,16 @@ static const struct lock_manager_operations nfsd_lease_mng_ops = {
 	.lm_change = nfsd_change_deleg_cb,
 };
 
+static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4_stateowner *so, u32 seqid)
+{
+	if (nfsd4_has_session(cstate))
+		return nfs_ok;
+	if (seqid == so->so_seqid - 1)
+		return nfserr_replay_me;
+	if (seqid == so->so_seqid)
+		return nfs_ok;
+	return nfserr_bad_seqid;
+}
 
 __be32
 nfsd4_process_open1(struct nfsd4_compound_state *cstate,
@@ -2437,57 +2567,49 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
 	clientid_t *clientid = &open->op_clientid;
 	struct nfs4_client *clp = NULL;
 	unsigned int strhashval;
-	struct nfs4_stateowner *sop = NULL;
-
-	if (!check_name(open->op_owner))
-		return nfserr_inval;
+	struct nfs4_openowner *oo = NULL;
+	__be32 status;
 
 	if (STALE_CLIENTID(&open->op_clientid))
 		return nfserr_stale_clientid;
+	/*
+	 * In case we need it later, after we've already created the
+	 * file and don't want to risk a further failure:
+	 */
+	open->op_file = nfsd4_alloc_file();
+	if (open->op_file == NULL)
+		return nfserr_jukebox;
 
-	strhashval = ownerstr_hashval(clientid->cl_id, open->op_owner);
-	sop = find_openstateowner_str(strhashval, open);
-	open->op_stateowner = sop;
-	if (!sop) {
-		/* Make sure the client's lease hasn't expired. */
+	strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner);
+	oo = find_openstateowner_str(strhashval, open);
+	open->op_openowner = oo;
+	if (!oo) {
 		clp = find_confirmed_client(clientid);
 		if (clp == NULL)
 			return nfserr_expired;
-		goto renew;
+		goto new_owner;
 	}
-	/* When sessions are used, skip open sequenceid processing */
-	if (nfsd4_has_session(cstate))
-		goto renew;
-	if (!sop->so_confirmed) {
+	if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) {
 		/* Replace unconfirmed owners without checking for replay. */
-		clp = sop->so_client;
-		release_openowner(sop);
-		open->op_stateowner = NULL;
-		goto renew;
-	}
-	if (open->op_seqid == sop->so_seqid - 1) {
-		if (sop->so_replay.rp_buflen)
-			return nfserr_replay_me;
-		/* The original OPEN failed so spectacularly
-		 * that we don't even have replay data saved!
-		 * Therefore, we have no choice but to continue
-		 * processing this OPEN; presumably, we'll
-		 * fail again for the same reason.
-		 */
-		dprintk("nfsd4_process_open1: replay with no replay cache\n");
-		goto renew;
-	}
-	if (open->op_seqid != sop->so_seqid)
-		return nfserr_bad_seqid;
-renew:
-	if (open->op_stateowner == NULL) {
-		sop = alloc_init_open_stateowner(strhashval, clp, open);
-		if (sop == NULL)
-			return nfserr_resource;
-		open->op_stateowner = sop;
+		clp = oo->oo_owner.so_client;
+		release_openowner(oo);
+		open->op_openowner = NULL;
+		goto new_owner;
 	}
-	list_del_init(&sop->so_close_lru);
-	renew_client(sop->so_client);
+	status = nfsd4_check_seqid(cstate, &oo->oo_owner, open->op_seqid);
+	if (status)
+		return status;
+	clp = oo->oo_owner.so_client;
+	goto alloc_stateid;
+new_owner:
+	oo = alloc_init_open_stateowner(strhashval, clp, open);
+	if (oo == NULL)
+		return nfserr_jukebox;
+	open->op_openowner = oo;
+alloc_stateid:
+	open->op_stp = nfs4_alloc_stateid(clp);
+	if (!open->op_stp)
+		return nfserr_jukebox;
 	return nfs_ok;
 }
 
@@ -2500,36 +2622,37 @@ nfs4_check_delegmode(struct nfs4_delegation *dp, int flags)
 		return nfs_ok;
 }
 
-static struct nfs4_delegation *
-find_delegation_file(struct nfs4_file *fp, stateid_t *stid)
+static int share_access_to_flags(u32 share_access)
 {
-	struct nfs4_delegation *dp;
+	share_access &= ~NFS4_SHARE_WANT_MASK;
 
-	spin_lock(&recall_lock);
-	list_for_each_entry(dp, &fp->fi_delegations, dl_perfile)
-		if (dp->dl_stateid.si_stateownerid == stid->si_stateownerid) {
-			spin_unlock(&recall_lock);
-			return dp;
-		}
-	spin_unlock(&recall_lock);
-	return NULL;
+	return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
 }
 
-static int share_access_to_flags(u32 share_access)
+static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl, stateid_t *s)
 {
-	share_access &= ~NFS4_SHARE_WANT_MASK;
+	struct nfs4_stid *ret;
 
-	return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
+	ret = find_stateid_by_type(cl, s, NFS4_DELEG_STID);
+	if (!ret)
+		return NULL;
+	return delegstateid(ret);
+}
+
+static bool nfsd4_is_deleg_cur(struct nfsd4_open *open)
+{
+	return open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR ||
+	       open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH;
 }
 
 static __be32
-nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
+nfs4_check_deleg(struct nfs4_client *cl, struct nfs4_file *fp, struct nfsd4_open *open,
 		struct nfs4_delegation **dp)
 {
 	int flags;
 	__be32 status = nfserr_bad_stateid;
 
-	*dp = find_delegation_file(fp, &open->op_delegate_stateid);
+	*dp = find_deleg_stateid(cl, &open->op_delegate_stateid);
 	if (*dp == NULL)
 		goto out;
 	flags = share_access_to_flags(open->op_share_access);
@@ -2537,41 +2660,37 @@ nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
 	if (status)
 		*dp = NULL;
 out:
-	if (open->op_claim_type != NFS4_OPEN_CLAIM_DELEGATE_CUR)
+	if (!nfsd4_is_deleg_cur(open))
 		return nfs_ok;
 	if (status)
 		return status;
-	open->op_stateowner->so_confirmed = 1;
+	open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
 	return nfs_ok;
 }
 
 static __be32
-nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_stateid **stpp)
+nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_ol_stateid **stpp)
 {
-	struct nfs4_stateid *local;
-	__be32 status = nfserr_share_denied;
-	struct nfs4_stateowner *sop = open->op_stateowner;
+	struct nfs4_ol_stateid *local;
+	struct nfs4_openowner *oo = open->op_openowner;
 
 	list_for_each_entry(local, &fp->fi_stateids, st_perfile) {
 		/* ignore lock owners */
 		if (local->st_stateowner->so_is_open_owner == 0)
 			continue;
 		/* remember if we have seen this open owner */
-		if (local->st_stateowner == sop)
+		if (local->st_stateowner == &oo->oo_owner)
 			*stpp = local;
 		/* check for conflicting share reservations */
 		if (!test_share(local, open))
-			goto out;
+			return nfserr_share_denied;
 	}
-	status = 0;
-out:
-	return status;
+	return nfs_ok;
 }
 
-static inline struct nfs4_stateid *
-nfs4_alloc_stateid(void)
+static void nfs4_free_stateid(struct nfs4_ol_stateid *s)
 {
-	return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
+	kmem_cache_free(stateid_slab, s);
 }
 
 static inline int nfs4_access_to_access(u32 nfs4_access)
@@ -2592,12 +2711,6 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
 	int oflag = nfs4_access_to_omode(open->op_share_access);
 	int access = nfs4_access_to_access(open->op_share_access);
 
-	/* CLAIM_DELEGATE_CUR is used in response to a broken lease;
-	 * allowing it to break the lease and return EAGAIN leaves the
-	 * client unable to make progress in returning the delegation */
-	if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
-		access |= NFSD_MAY_NOT_BREAK_LEASE;
-
 	if (!fp->fi_fds[oflag]) {
 		status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
 			&fp->fi_fds[oflag]);
@@ -2609,27 +2722,6 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
 	return nfs_ok;
 }
 
-static __be32
-nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
-		struct nfs4_file *fp, struct svc_fh *cur_fh,
-		struct nfsd4_open *open)
-{
-	struct nfs4_stateid *stp;
-	__be32 status;
-
-	stp = nfs4_alloc_stateid();
-	if (stp == NULL)
-		return nfserr_resource;
-
-	status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
-	if (status) {
-		kmem_cache_free(stateid_slab, stp);
-		return status;
-	}
-	*stpp = stp;
-	return 0;
-}
-
 static inline __be32
 nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
 		struct nfsd4_open *open)
@@ -2646,9 +2738,9 @@ nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
 }
 
 static __be32
-nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_stateid *stp, struct nfsd4_open *open)
+nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open)
 {
-	u32 op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;
+	u32 op_share_access = open->op_share_access;
 	bool new_access;
 	__be32 status;
 
@@ -2677,8 +2769,8 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *c
 static void
 nfs4_set_claim_prev(struct nfsd4_open *open)
 {
-	open->op_stateowner->so_confirmed = 1;
-	open->op_stateowner->so_client->cl_firststate = 1;
+	open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
+	open->op_openowner->oo_owner.so_client->cl_firststate = 1;
 }
 
 /* Should we give out recallable state?: */
@@ -2721,7 +2813,7 @@ static int nfs4_setlease(struct nfs4_delegation *dp, int flag)
 	if (!fl)
 		return -ENOMEM;
 	fl->fl_file = find_readable_file(fp);
-	list_add(&dp->dl_perclnt, &dp->dl_client->cl_delegations);
+	list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
 	status = vfs_setlease(fl->fl_file, fl->fl_type, &fl);
 	if (status) {
 		list_del_init(&dp->dl_perclnt);
@@ -2750,7 +2842,7 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
 	atomic_inc(&fp->fi_delegees);
 	list_add(&dp->dl_perfile, &fp->fi_delegations);
 	spin_unlock(&recall_lock);
-	list_add(&dp->dl_perclnt, &dp->dl_client->cl_delegations);
+	list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
 	return 0;
 }
 
@@ -2758,14 +2850,14 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
  * Attempt to hand out a delegation.
  */
 static void
-nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_stateid *stp)
+nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_ol_stateid *stp)
 {
 	struct nfs4_delegation *dp;
-	struct nfs4_stateowner *sop = stp->st_stateowner;
+	struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner);
 	int cb_up;
 	int status, flag = 0;
 
-	cb_up = nfsd4_cb_channel_good(sop->so_client);
+	cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client);
 	flag = NFS4_OPEN_DELEGATE_NONE;
 	open->op_recall = 0;
 	switch (open->op_claim_type) {
@@ -2781,7 +2873,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
 			 * had the chance to reclaim theirs.... */
 			if (locks_in_grace())
 				goto out;
-			if (!cb_up || !sop->so_confirmed)
+			if (!cb_up || !(oo->oo_flags & NFS4_OO_CONFIRMED))
 				goto out;
 			if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
 				flag = NFS4_OPEN_DELEGATE_WRITE;
@@ -2792,17 +2884,17 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
 			goto out;
 	}
 
-	dp = alloc_init_deleg(sop->so_client, stp, fh, flag);
+	dp = alloc_init_deleg(oo->oo_owner.so_client, stp, fh, flag);
 	if (dp == NULL)
 		goto out_no_deleg;
 	status = nfs4_set_delegation(dp, flag);
 	if (status)
 		goto out_free;
 
-	memcpy(&open->op_delegate_stateid, &dp->dl_stateid, sizeof(dp->dl_stateid));
+	memcpy(&open->op_delegate_stateid, &dp->dl_stid.sc_stateid, sizeof(dp->dl_stid.sc_stateid));
 
 	dprintk("NFSD: delegation stateid=" STATEID_FMT "\n",
-		STATEID_VAL(&dp->dl_stateid));
+		STATEID_VAL(&dp->dl_stid.sc_stateid));
 out:
 	if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS
 			&& flag == NFS4_OPEN_DELEGATE_NONE
@@ -2824,16 +2916,13 @@ __be32
 nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
 {
 	struct nfsd4_compoundres *resp = rqstp->rq_resp;
+	struct nfs4_client *cl = open->op_openowner->oo_owner.so_client;
 	struct nfs4_file *fp = NULL;
 	struct inode *ino = current_fh->fh_dentry->d_inode;
-	struct nfs4_stateid *stp = NULL;
+	struct nfs4_ol_stateid *stp = NULL;
 	struct nfs4_delegation *dp = NULL;
 	__be32 status;
 
-	status = nfserr_inval;
-	if (!access_valid(open->op_share_access, resp->cstate.minorversion)
-			|| !deny_valid(open->op_share_deny))
-		goto out;
 	/*
 	 * Lookup file; if found, lookup stateid and check open request,
 	 * and check for delegations in the process of being recalled.
@@ -2843,17 +2932,17 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
 	if (fp) {
 		if ((status = nfs4_check_open(fp, open, &stp)))
 			goto out;
-		status = nfs4_check_deleg(fp, open, &dp);
+		status = nfs4_check_deleg(cl, fp, open, &dp);
 		if (status)
 			goto out;
 	} else {
 		status = nfserr_bad_stateid;
-		if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
-			goto out;
-		status = nfserr_resource;
-		fp = alloc_init_file(ino);
-		if (fp == NULL)
+		if (nfsd4_is_deleg_cur(open))
 			goto out;
+		status = nfserr_jukebox;
+		fp = open->op_file;
+		open->op_file = NULL;
+		nfsd4_init_file(fp, ino);
 	}
 
 	/*
@@ -2865,24 +2954,24 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
 		status = nfs4_upgrade_open(rqstp, fp, current_fh, stp, open);
 		if (status)
 			goto out;
-		update_stateid(&stp->st_stateid);
 	} else {
-		status = nfs4_new_open(rqstp, &stp, fp, current_fh, open);
+		status = nfs4_get_vfs_file(rqstp, fp, current_fh, open);
 		if (status)
 			goto out;
-		init_stateid(stp, fp, open);
+		stp = open->op_stp;
+		open->op_stp = NULL;
+		init_open_stateid(stp, fp, open);
 		status = nfsd4_truncate(rqstp, current_fh, open);
 		if (status) {
 			release_open_stateid(stp);
 			goto out;
 		}
-		if (nfsd4_has_session(&resp->cstate))
-			update_stateid(&stp->st_stateid);
 	}
-	memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
+	update_stateid(&stp->st_stid.sc_stateid);
+	memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
 
 	if (nfsd4_has_session(&resp->cstate))
-		open->op_stateowner->so_confirmed = 1;
+		open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
 
 	/*
 	* Attempt to hand out a delegation. No error return, because the
@@ -2893,7 +2982,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
 	status = nfs_ok;
 
 	dprintk("%s: stateid=" STATEID_FMT "\n", __func__,
-		STATEID_VAL(&stp->st_stateid));
+		STATEID_VAL(&stp->st_stid.sc_stateid));
 out:
 	if (fp)
 		put_nfs4_file(fp);
@@ -2903,13 +2992,34 @@ out:
 	* To finish the open response, we just need to set the rflags.
 	*/
 	open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
-	if (!open->op_stateowner->so_confirmed &&
+	if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED) &&
 	    !nfsd4_has_session(&resp->cstate))
 		open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
 
 	return status;
 }
 
+void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status)
+{
+	if (open->op_openowner) {
+		struct nfs4_openowner *oo = open->op_openowner;
+
+		if (!list_empty(&oo->oo_owner.so_stateids))
+			list_del_init(&oo->oo_close_lru);
+		if (oo->oo_flags & NFS4_OO_NEW) {
+			if (status) {
+				release_openowner(oo);
+				open->op_openowner = NULL;
+			} else
+				oo->oo_flags &= ~NFS4_OO_NEW;
+		}
+	}
+	if (open->op_file)
+		nfsd4_free_file(open->op_file);
+	if (open->op_stp)
+		nfs4_free_stateid(open->op_stp);
+}
+
 __be32
 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	    clientid_t *clid)
@@ -2930,7 +3040,6 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		dprintk("nfsd4_renew: clientid not found!\n");
 		goto out;
 	}
-	renew_client(clp);
 	status = nfserr_cb_path_down;
 	if (!list_empty(&clp->cl_delegations)
 			&& clp->cl_cb_state != NFSD4_CB_UP)
@@ -2962,7 +3071,7 @@ static time_t
 nfs4_laundromat(void)
 {
 	struct nfs4_client *clp;
-	struct nfs4_stateowner *sop;
+	struct nfs4_openowner *oo;
 	struct nfs4_delegation *dp;
 	struct list_head *pos, *next, reaplist;
 	time_t cutoff = get_seconds() - nfsd4_lease;
@@ -3019,16 +3128,14 @@ nfs4_laundromat(void)
 	}
 	test_val = nfsd4_lease;
 	list_for_each_safe(pos, next, &close_lru) {
-		sop = list_entry(pos, struct nfs4_stateowner, so_close_lru);
-		if (time_after((unsigned long)sop->so_time, (unsigned long)cutoff)) {
-			u = sop->so_time - cutoff;
+		oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
+		if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
+			u = oo->oo_time - cutoff;
 			if (test_val > u)
 				test_val = u;
 			break;
 		}
-		dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
-			sop->so_id);
-		release_openowner(sop);
+		release_openowner(oo);
 	}
 	if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
 		clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
@@ -3050,30 +3157,17 @@ laundromat_main(struct work_struct *not_used)
 	queue_delayed_work(laundry_wq, &laundromat_work, t*HZ);
 }
 
-static struct nfs4_stateowner *
-search_close_lru(u32 st_id, int flags)
+static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
 {
-	struct nfs4_stateowner *local = NULL;
-
-	if (flags & CLOSE_STATE) {
-		list_for_each_entry(local, &close_lru, so_close_lru) {
-			if (local->so_id == st_id)
-				return local;
-		}
-	}
-	return NULL;
-}
-
-static inline int
-nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stateid *stp)
-{
-	return fhp->fh_dentry->d_inode != stp->st_file->fi_inode;
+	if (fhp->fh_dentry->d_inode != stp->st_file->fi_inode)
+		return nfserr_bad_stateid;
+	return nfs_ok;
 }
 
 static int
 STALE_STATEID(stateid_t *stateid)
 {
-	if (stateid->si_boot == boot_time)
+	if (stateid->si_opaque.so_clid.cl_boot == boot_time)
 		return 0;
 	dprintk("NFSD: stale stateid " STATEID_FMT "!\n",
 		STATEID_VAL(stateid));
@@ -3096,7 +3190,7 @@ access_permit_write(unsigned long access_bmap)
 }
 
 static
-__be32 nfs4_check_openmode(struct nfs4_stateid *stp, int flags)
+__be32 nfs4_check_openmode(struct nfs4_ol_stateid *stp, int flags)
 {
         __be32 status = nfserr_openmode;
 
@@ -3139,68 +3233,80 @@ grace_disallows_io(struct inode *inode)
 	return locks_in_grace() && mandatory_lock(inode);
 }
 
-static int check_stateid_generation(stateid_t *in, stateid_t *ref, int flags)
+/* Returns true iff a is later than b: */
+static bool stateid_generation_after(stateid_t *a, stateid_t *b)
+{
+	return (s32)a->si_generation - (s32)b->si_generation > 0;
+}
+
+static int check_stateid_generation(stateid_t *in, stateid_t *ref, bool has_session)
 {
 	/*
 	 * When sessions are used the stateid generation number is ignored
 	 * when it is zero.
 	 */
-	if ((flags & HAS_SESSION) && in->si_generation == 0)
-		goto out;
+	if (has_session && in->si_generation == 0)
+		return nfs_ok;
+
+	if (in->si_generation == ref->si_generation)
+		return nfs_ok;
 
 	/* If the client sends us a stateid from the future, it's buggy: */
-	if (in->si_generation > ref->si_generation)
+	if (stateid_generation_after(in, ref))
 		return nfserr_bad_stateid;
 	/*
-	 * The following, however, can happen.  For example, if the
-	 * client sends an open and some IO at the same time, the open
-	 * may bump si_generation while the IO is still in flight.
-	 * Thanks to hard links and renames, the client never knows what
-	 * file an open will affect.  So it could avoid that situation
-	 * only by serializing all opens and IO from the same open
-	 * owner.  To recover from the old_stateid error, the client
-	 * will just have to retry the IO:
+	 * However, we could see a stateid from the past, even from a
+	 * non-buggy client.  For example, if the client sends a lock
+	 * while some IO is outstanding, the lock may bump si_generation
+	 * while the IO is still in flight.  The client could avoid that
+	 * situation by waiting for responses on all the IO requests,
+	 * but better performance may result in retrying IO that
+	 * receives an old_stateid error if requests are rarely
+	 * reordered in flight:
 	 */
-	if (in->si_generation < ref->si_generation)
-		return nfserr_old_stateid;
-out:
-	return nfs_ok;
+	return nfserr_old_stateid;
 }
 
-static int is_delegation_stateid(stateid_t *stateid)
+__be32 nfs4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
 {
-	return stateid->si_fileid == 0;
-}
+	struct nfs4_stid *s;
+	struct nfs4_ol_stateid *ols;
+	__be32 status;
 
-static int is_open_stateid(struct nfs4_stateid *stateid)
-{
-	return stateid->st_openstp == NULL;
+	if (STALE_STATEID(stateid))
+		return nfserr_stale_stateid;
+
+	s = find_stateid(cl, stateid);
+	if (!s)
+		 return nfserr_stale_stateid;
+	status = check_stateid_generation(stateid, &s->sc_stateid, 1);
+	if (status)
+		return status;
+	if (!(s->sc_type & (NFS4_OPEN_STID | NFS4_LOCK_STID)))
+		return nfs_ok;
+	ols = openlockstateid(s);
+	if (ols->st_stateowner->so_is_open_owner
+	    && !(openowner(ols->st_stateowner)->oo_flags & NFS4_OO_CONFIRMED))
+		return nfserr_bad_stateid;
+	return nfs_ok;
 }
 
-__be32 nfs4_validate_stateid(stateid_t *stateid, int flags)
+static __be32 nfsd4_lookup_stateid(stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s)
 {
-	struct nfs4_stateid *stp = NULL;
-	__be32 status = nfserr_stale_stateid;
+	struct nfs4_client *cl;
 
+	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+		return nfserr_bad_stateid;
 	if (STALE_STATEID(stateid))
-		goto out;
-
-	status = nfserr_expired;
-	stp = search_for_stateid(stateid);
-	if (!stp)
-		goto out;
-	status = nfserr_bad_stateid;
-
-	if (!stp->st_stateowner->so_confirmed)
-		goto out;
-
-	status = check_stateid_generation(stateid, &stp->st_stateid, flags);
-	if (status)
-		goto out;
+		return nfserr_stale_stateid;
+	cl = find_confirmed_client(&stateid->si_opaque.so_clid);
+	if (!cl)
+		return nfserr_expired;
+	*s = find_stateid_by_type(cl, stateid, typemask);
+	if (!*s)
+		return nfserr_bad_stateid;
+	return nfs_ok;
 
-	status = nfs_ok;
-out:
-	return status;
 }
 
 /*
@@ -3210,7 +3316,8 @@ __be32
 nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
 			   stateid_t *stateid, int flags, struct file **filpp)
 {
-	struct nfs4_stateid *stp = NULL;
+	struct nfs4_stid *s;
+	struct nfs4_ol_stateid *stp = NULL;
 	struct nfs4_delegation *dp = NULL;
 	struct svc_fh *current_fh = &cstate->current_fh;
 	struct inode *ino = current_fh->fh_dentry->d_inode;
@@ -3222,60 +3329,47 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
 	if (grace_disallows_io(ino))
 		return nfserr_grace;
 
-	if (nfsd4_has_session(cstate))
-		flags |= HAS_SESSION;
-
 	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
 		return check_special_stateids(current_fh, stateid, flags);
 
-	status = nfserr_stale_stateid;
-	if (STALE_STATEID(stateid)) 
+	status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID, &s);
+	if (status)
+		return status;
+	status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));
+	if (status)
 		goto out;
-
-	/*
-	 * We assume that any stateid that has the current boot time,
-	 * but that we can't find, is expired:
-	 */
-	status = nfserr_expired;
-	if (is_delegation_stateid(stateid)) {
-		dp = find_delegation_stateid(ino, stateid);
-		if (!dp)
-			goto out;
-		status = check_stateid_generation(stateid, &dp->dl_stateid,
-						  flags);
-		if (status)
-			goto out;
+	switch (s->sc_type) {
+	case NFS4_DELEG_STID:
+		dp = delegstateid(s);
 		status = nfs4_check_delegmode(dp, flags);
 		if (status)
 			goto out;
-		renew_client(dp->dl_client);
 		if (filpp) {
 			*filpp = dp->dl_file->fi_deleg_file;
 			BUG_ON(!*filpp);
 		}
-	} else { /* open or lock stateid */
-		stp = find_stateid(stateid, flags);
-		if (!stp)
-			goto out;
-		status = nfserr_bad_stateid;
-		if (nfs4_check_fh(current_fh, stp))
-			goto out;
-		if (!stp->st_stateowner->so_confirmed)
-			goto out;
-		status = check_stateid_generation(stateid, &stp->st_stateid,
-						  flags);
+		break;
+	case NFS4_OPEN_STID:
+	case NFS4_LOCK_STID:
+		stp = openlockstateid(s);
+		status = nfs4_check_fh(current_fh, stp);
 		if (status)
 			goto out;
+		if (stp->st_stateowner->so_is_open_owner
+		    && !(openowner(stp->st_stateowner)->oo_flags & NFS4_OO_CONFIRMED))
+			goto out;
 		status = nfs4_check_openmode(stp, flags);
 		if (status)
 			goto out;
-		renew_client(stp->st_stateowner->so_client);
 		if (filpp) {
 			if (flags & RD_STATE)
 				*filpp = find_readable_file(stp->st_file);
 			else
 				*filpp = find_writeable_file(stp->st_file);
 		}
+		break;
+	default:
+		return nfserr_bad_stateid;
 	}
 	status = nfs_ok;
 out:
@@ -3283,18 +3377,9 @@ out:
 }
 
 static __be32
-nfsd4_free_delegation_stateid(stateid_t *stateid)
+nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp)
 {
-	struct nfs4_delegation *dp = search_for_delegation(stateid);
-	if (dp)
-		return nfserr_locks_held;
-	return nfserr_bad_stateid;
-}
-
-static __be32
-nfsd4_free_lock_stateid(struct nfs4_stateid *stp)
-{
-	if (check_for_locks(stp->st_file, stp->st_stateowner))
+	if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner)))
 		return nfserr_locks_held;
 	release_lock_stateid(stp);
 	return nfs_ok;
@@ -3307,51 +3392,40 @@ __be32
 nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		   struct nfsd4_test_stateid *test_stateid)
 {
-	test_stateid->ts_has_session = nfsd4_has_session(cstate);
+	/* real work is done during encoding */
 	return nfs_ok;
 }
 
-/*
- * Free a state id
- */
 __be32
 nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		   struct nfsd4_free_stateid *free_stateid)
 {
 	stateid_t *stateid = &free_stateid->fr_stateid;
-	struct nfs4_stateid *stp;
-	__be32 ret;
+	struct nfs4_stid *s;
+	struct nfs4_client *cl = cstate->session->se_client;
+	__be32 ret = nfserr_bad_stateid;
 
 	nfs4_lock_state();
-	if (is_delegation_stateid(stateid)) {
-		ret = nfsd4_free_delegation_stateid(stateid);
-		goto out;
-	}
-
-	stp = search_for_stateid(stateid);
-	if (!stp) {
-		ret = nfserr_bad_stateid;
+	s = find_stateid(cl, stateid);
+	if (!s)
 		goto out;
-	}
-	if (stateid->si_generation != 0) {
-		if (stateid->si_generation < stp->st_stateid.si_generation) {
-			ret = nfserr_old_stateid;
-			goto out;
-		}
-		if (stateid->si_generation > stp->st_stateid.si_generation) {
-			ret = nfserr_bad_stateid;
-			goto out;
-		}
-	}
-
-	if (is_open_stateid(stp)) {
+	switch (s->sc_type) {
+	case NFS4_DELEG_STID:
 		ret = nfserr_locks_held;
 		goto out;
-	} else {
-		ret = nfsd4_free_lock_stateid(stp);
-		goto out;
+	case NFS4_OPEN_STID:
+	case NFS4_LOCK_STID:
+		ret = check_stateid_generation(stateid, &s->sc_stateid, 1);
+		if (ret)
+			goto out;
+		if (s->sc_type == NFS4_LOCK_STID)
+			ret = nfsd4_free_lock_stateid(openlockstateid(s));
+		else
+			ret = nfserr_locks_held;
+		break;
+	default:
+		ret = nfserr_bad_stateid;
 	}
-
 out:
 	nfs4_unlock_state();
 	return ret;
@@ -3364,124 +3438,64 @@ setlkflg (int type)
 		RD_STATE : WR_STATE;
 }
 
+static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_ol_stateid *stp)
+{
+	struct svc_fh *current_fh = &cstate->current_fh;
+	struct nfs4_stateowner *sop = stp->st_stateowner;
+	__be32 status;
+
+	status = nfsd4_check_seqid(cstate, sop, seqid);
+	if (status)
+		return status;
+	if (stp->st_stid.sc_type == NFS4_CLOSED_STID)
+		/*
+		 * "Closed" stateid's exist *only* to return
+		 * nfserr_replay_me from the previous step.
+		 */
+		return nfserr_bad_stateid;
+	status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate));
+	if (status)
+		return status;
+	return nfs4_check_fh(current_fh, stp);
+}
+
 /* 
  * Checks for sequence id mutating operations. 
  */
 static __be32
 nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
-			 stateid_t *stateid, int flags,
-			 struct nfs4_stateowner **sopp,
-			 struct nfs4_stateid **stpp, struct nfsd4_lock *lock)
+			 stateid_t *stateid, char typemask,
+			 struct nfs4_ol_stateid **stpp)
 {
-	struct nfs4_stateid *stp;
-	struct nfs4_stateowner *sop;
-	struct svc_fh *current_fh = &cstate->current_fh;
 	__be32 status;
+	struct nfs4_stid *s;
 
 	dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__,
 		seqid, STATEID_VAL(stateid));
 
 	*stpp = NULL;
-	*sopp = NULL;
-
-	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) {
-		dprintk("NFSD: preprocess_seqid_op: magic stateid!\n");
-		return nfserr_bad_stateid;
-	}
-
-	if (STALE_STATEID(stateid))
-		return nfserr_stale_stateid;
-
-	if (nfsd4_has_session(cstate))
-		flags |= HAS_SESSION;
-
-	/*
-	* We return BAD_STATEID if filehandle doesn't match stateid, 
-	* the confirmed flag is incorrecly set, or the generation 
-	* number is incorrect.  
-	*/
-	stp = find_stateid(stateid, flags);
-	if (stp == NULL) {
-		/*
-		 * Also, we should make sure this isn't just the result of
-		 * a replayed close:
-		 */
-		sop = search_close_lru(stateid->si_stateownerid, flags);
-		/* It's not stale; let's assume it's expired: */
-		if (sop == NULL)
-			return nfserr_expired;
-		*sopp = sop;
-		goto check_replay;
-	}
-
-	*stpp = stp;
-	*sopp = sop = stp->st_stateowner;
-
-	if (lock) {
-		clientid_t *lockclid = &lock->v.new.clientid;
-		struct nfs4_client *clp = sop->so_client;
-		int lkflg = 0;
-		__be32 status;
-
-		lkflg = setlkflg(lock->lk_type);
-
-		if (lock->lk_is_new) {
-			if (!sop->so_is_open_owner)
-				return nfserr_bad_stateid;
-			if (!(flags & HAS_SESSION) &&
-			    !same_clid(&clp->cl_clientid, lockclid))
-				return nfserr_bad_stateid;
-			/* stp is the open stateid */
-			status = nfs4_check_openmode(stp, lkflg);
-			if (status)
-				return status;
-		} else {
-			/* stp is the lock stateid */
-			status = nfs4_check_openmode(stp->st_openstp, lkflg);
-			if (status)
-				return status;
-               }
-	}
+	status = nfsd4_lookup_stateid(stateid, typemask, &s);
+	if (status)
+		return status;
+	*stpp = openlockstateid(s);
+	cstate->replay_owner = (*stpp)->st_stateowner;
 
-	if (nfs4_check_fh(current_fh, stp)) {
-		dprintk("NFSD: preprocess_seqid_op: fh-stateid mismatch!\n");
-		return nfserr_bad_stateid;
-	}
+	return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp);
+}
 
-	/*
-	*  We now validate the seqid and stateid generation numbers.
-	*  For the moment, we ignore the possibility of 
-	*  generation number wraparound.
-	*/
-	if (!(flags & HAS_SESSION) && seqid != sop->so_seqid)
-		goto check_replay;
+static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, struct nfs4_ol_stateid **stpp)
+{
+	__be32 status;
+	struct nfs4_openowner *oo;
 
-	if (sop->so_confirmed && flags & CONFIRM) {
-		dprintk("NFSD: preprocess_seqid_op: expected"
-				" unconfirmed stateowner!\n");
-		return nfserr_bad_stateid;
-	}
-	if (!sop->so_confirmed && !(flags & CONFIRM)) {
-		dprintk("NFSD: preprocess_seqid_op: stateowner not"
-				" confirmed yet!\n");
-		return nfserr_bad_stateid;
-	}
-	status = check_stateid_generation(stateid, &stp->st_stateid, flags);
+	status = nfs4_preprocess_seqid_op(cstate, seqid, stateid,
+						NFS4_OPEN_STID, stpp);
 	if (status)
 		return status;
-	renew_client(sop->so_client);
+	oo = openowner((*stpp)->st_stateowner);
+	if (!(oo->oo_flags & NFS4_OO_CONFIRMED))
+		return nfserr_bad_stateid;
 	return nfs_ok;
-
-check_replay:
-	if (seqid == sop->so_seqid - 1) {
-		dprintk("NFSD: preprocess_seqid_op: retransmission?\n");
-		/* indicate replay to calling function */
-		return nfserr_replay_me;
-	}
-	dprintk("NFSD: preprocess_seqid_op: bad seqid (expected %d, got %d)\n",
-			sop->so_seqid, seqid);
-	*sopp = NULL;
-	return nfserr_bad_seqid;
 }
 
 __be32
@@ -3489,8 +3503,8 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		   struct nfsd4_open_confirm *oc)
 {
 	__be32 status;
-	struct nfs4_stateowner *sop;
-	struct nfs4_stateid *stp;
+	struct nfs4_openowner *oo;
+	struct nfs4_ol_stateid *stp;
 
 	dprintk("NFSD: nfsd4_open_confirm on file %.*s\n",
 			(int)cstate->current_fh.fh_dentry->d_name.len,
@@ -3502,38 +3516,52 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	nfs4_lock_state();
 
-	if ((status = nfs4_preprocess_seqid_op(cstate,
+	status = nfs4_preprocess_seqid_op(cstate,
 					oc->oc_seqid, &oc->oc_req_stateid,
-					CONFIRM | OPEN_STATE,
-					&oc->oc_stateowner, &stp, NULL)))
-		goto out; 
-
-	sop = oc->oc_stateowner;
-	sop->so_confirmed = 1;
-	update_stateid(&stp->st_stateid);
-	memcpy(&oc->oc_resp_stateid, &stp->st_stateid, sizeof(stateid_t));
+					NFS4_OPEN_STID, &stp);
+	if (status)
+		goto out;
+	oo = openowner(stp->st_stateowner);
+	status = nfserr_bad_stateid;
+	if (oo->oo_flags & NFS4_OO_CONFIRMED)
+		goto out;
+	oo->oo_flags |= NFS4_OO_CONFIRMED;
+	update_stateid(&stp->st_stid.sc_stateid);
+	memcpy(&oc->oc_resp_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
 	dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
-		__func__, oc->oc_seqid, STATEID_VAL(&stp->st_stateid));
+		__func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid));
 
-	nfsd4_create_clid_dir(sop->so_client);
+	nfsd4_create_clid_dir(oo->oo_owner.so_client);
+	status = nfs_ok;
 out:
-	if (oc->oc_stateowner) {
-		nfs4_get_stateowner(oc->oc_stateowner);
-		cstate->replay_owner = oc->oc_stateowner;
-	}
-	nfs4_unlock_state();
+	if (!cstate->replay_owner)
+		nfs4_unlock_state();
 	return status;
 }
 
-static inline void nfs4_file_downgrade(struct nfs4_stateid *stp, unsigned int to_access)
+static inline void nfs4_stateid_downgrade_bit(struct nfs4_ol_stateid *stp, u32 access)
 {
-	int i;
+	if (!test_bit(access, &stp->st_access_bmap))
+		return;
+	nfs4_file_put_access(stp->st_file, nfs4_access_to_omode(access));
+	__clear_bit(access, &stp->st_access_bmap);
+}
 
-	for (i = 1; i < 4; i++) {
-		if (test_bit(i, &stp->st_access_bmap) && !(i & to_access)) {
-			nfs4_file_put_access(stp->st_file, i);
-			__clear_bit(i, &stp->st_access_bmap);
-		}
+static inline void nfs4_stateid_downgrade(struct nfs4_ol_stateid *stp, u32 to_access)
+{
+	switch (to_access) {
+	case NFS4_SHARE_ACCESS_READ:
+		nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_WRITE);
+		nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH);
+		break;
+	case NFS4_SHARE_ACCESS_WRITE:
+		nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_READ);
+		nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH);
+		break;
+	case NFS4_SHARE_ACCESS_BOTH:
+		break;
+	default:
+		BUG();
 	}
 }
 
@@ -3553,24 +3581,20 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
 		     struct nfsd4_open_downgrade *od)
 {
 	__be32 status;
-	struct nfs4_stateid *stp;
+	struct nfs4_ol_stateid *stp;
 
 	dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n", 
 			(int)cstate->current_fh.fh_dentry->d_name.len,
 			cstate->current_fh.fh_dentry->d_name.name);
 
-	if (!access_valid(od->od_share_access, cstate->minorversion)
-			|| !deny_valid(od->od_share_deny))
-		return nfserr_inval;
+	/* We don't yet support WANT bits: */
+	od->od_share_access &= NFS4_SHARE_ACCESS_MASK;
 
 	nfs4_lock_state();
-	if ((status = nfs4_preprocess_seqid_op(cstate,
-					od->od_seqid,
-					&od->od_stateid, 
-					OPEN_STATE,
-					&od->od_stateowner, &stp, NULL)))
+	status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,
+					&od->od_stateid, &stp);
+	if (status)
 		goto out; 
-
 	status = nfserr_inval;
 	if (!test_bit(od->od_share_access, &stp->st_access_bmap)) {
 		dprintk("NFSD:access not a subset current bitmap: 0x%lx, input access=%08x\n",
@@ -3582,22 +3606,45 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
 			stp->st_deny_bmap, od->od_share_deny);
 		goto out;
 	}
-	nfs4_file_downgrade(stp, od->od_share_access);
+	nfs4_stateid_downgrade(stp, od->od_share_access);
 
 	reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
 
-	update_stateid(&stp->st_stateid);
-	memcpy(&od->od_stateid, &stp->st_stateid, sizeof(stateid_t));
+	update_stateid(&stp->st_stid.sc_stateid);
+	memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
 	status = nfs_ok;
 out:
-	if (od->od_stateowner) {
-		nfs4_get_stateowner(od->od_stateowner);
-		cstate->replay_owner = od->od_stateowner;
-	}
-	nfs4_unlock_state();
+	if (!cstate->replay_owner)
+		nfs4_unlock_state();
 	return status;
 }
 
+void nfsd4_purge_closed_stateid(struct nfs4_stateowner *so)
+{
+	struct nfs4_openowner *oo;
+	struct nfs4_ol_stateid *s;
+
+	if (!so->so_is_open_owner)
+		return;
+	oo = openowner(so);
+	s = oo->oo_last_closed_stid;
+	if (!s)
+		return;
+	if (!(oo->oo_flags & NFS4_OO_PURGE_CLOSE)) {
+		/* Release the last_closed_stid on the next seqid bump: */
+		oo->oo_flags |= NFS4_OO_PURGE_CLOSE;
+		return;
+	}
+	oo->oo_flags &= ~NFS4_OO_PURGE_CLOSE;
+	release_last_closed_stateid(oo);
+}
+
+static void nfsd4_close_open_stateid(struct nfs4_ol_stateid *s)
+{
+	unhash_open_stateid(s);
+	s->st_stid.sc_type = NFS4_CLOSED_STID;
+}
+
 /*
  * nfs4_unlock_state() called after encode
  */
@@ -3606,39 +3653,37 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	    struct nfsd4_close *close)
 {
 	__be32 status;
-	struct nfs4_stateid *stp;
+	struct nfs4_openowner *oo;
+	struct nfs4_ol_stateid *stp;
 
 	dprintk("NFSD: nfsd4_close on file %.*s\n", 
 			(int)cstate->current_fh.fh_dentry->d_name.len,
 			cstate->current_fh.fh_dentry->d_name.name);
 
 	nfs4_lock_state();
-	/* check close_lru for replay */
-	if ((status = nfs4_preprocess_seqid_op(cstate,
-					close->cl_seqid,
-					&close->cl_stateid, 
-					OPEN_STATE | CLOSE_STATE,
-					&close->cl_stateowner, &stp, NULL)))
+	status = nfs4_preprocess_seqid_op(cstate, close->cl_seqid,
+					&close->cl_stateid,
+					NFS4_OPEN_STID|NFS4_CLOSED_STID,
+					&stp);
+	if (status)
 		goto out; 
+	oo = openowner(stp->st_stateowner);
 	status = nfs_ok;
-	update_stateid(&stp->st_stateid);
-	memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));
+	update_stateid(&stp->st_stid.sc_stateid);
+	memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
 
-	/* release_stateid() calls nfsd_close() if needed */
-	release_open_stateid(stp);
+	nfsd4_close_open_stateid(stp);
+	oo->oo_last_closed_stid = stp;
 
 	/* place unused nfs4_stateowners on so_close_lru list to be
 	 * released by the laundromat service after the lease period
 	 * to enable us to handle CLOSE replay
 	 */
-	if (list_empty(&close->cl_stateowner->so_stateids))
-		move_to_close_lru(close->cl_stateowner);
+	if (list_empty(&oo->oo_owner.so_stateids))
+		move_to_close_lru(oo);
 out:
-	if (close->cl_stateowner) {
-		nfs4_get_stateowner(close->cl_stateowner);
-		cstate->replay_owner = close->cl_stateowner;
-	}
-	nfs4_unlock_state();
+	if (!cstate->replay_owner)
+		nfs4_unlock_state();
 	return status;
 }
 
@@ -3648,34 +3693,22 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 {
 	struct nfs4_delegation *dp;
 	stateid_t *stateid = &dr->dr_stateid;
+	struct nfs4_stid *s;
 	struct inode *inode;
 	__be32 status;
-	int flags = 0;
 
 	if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
 		return status;
 	inode = cstate->current_fh.fh_dentry->d_inode;
 
-	if (nfsd4_has_session(cstate))
-		flags |= HAS_SESSION;
 	nfs4_lock_state();
-	status = nfserr_bad_stateid;
-	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
-		goto out;
-	status = nfserr_stale_stateid;
-	if (STALE_STATEID(stateid))
-		goto out;
-	status = nfserr_bad_stateid;
-	if (!is_delegation_stateid(stateid))
-		goto out;
-	status = nfserr_expired;
-	dp = find_delegation_stateid(inode, stateid);
-	if (!dp)
+	status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID, &s);
+	if (status)
 		goto out;
-	status = check_stateid_generation(stateid, &dp->dl_stateid, flags);
+	dp = delegstateid(s);
+	status = check_stateid_generation(stateid, &dp->dl_stid.sc_stateid, nfsd4_has_session(cstate));
 	if (status)
 		goto out;
-	renew_client(dp->dl_client);
 
 	unhash_delegation(dp);
 out:
@@ -3713,9 +3746,6 @@ last_byte_offset(u64 start, u64 len)
 	return end > start ? end - 1: NFS4_MAX_UINT64;
 }
 
-#define lockownerid_hashval(id) \
-        ((id) & LOCK_HASH_MASK)
-
 static inline unsigned int
 lock_ownerstr_hashval(struct inode *inode, u32 cl_id,
 		struct xdr_netobj *ownername)
@@ -3725,101 +3755,7 @@ lock_ownerstr_hashval(struct inode *inode, u32 cl_id,
 		& LOCK_HASH_MASK;
 }
 
-static struct list_head lock_ownerid_hashtbl[LOCK_HASH_SIZE];
 static struct list_head	lock_ownerstr_hashtbl[LOCK_HASH_SIZE];
-static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
-
-static int
-same_stateid(stateid_t *id_one, stateid_t *id_two)
-{
-	if (id_one->si_stateownerid != id_two->si_stateownerid)
-		return 0;
-	return id_one->si_fileid == id_two->si_fileid;
-}
-
-static struct nfs4_stateid *
-find_stateid(stateid_t *stid, int flags)
-{
-	struct nfs4_stateid *local;
-	u32 st_id = stid->si_stateownerid;
-	u32 f_id = stid->si_fileid;
-	unsigned int hashval;
-
-	dprintk("NFSD: find_stateid flags 0x%x\n",flags);
-	if (flags & (LOCK_STATE | RD_STATE | WR_STATE)) {
-		hashval = stateid_hashval(st_id, f_id);
-		list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
-			if ((local->st_stateid.si_stateownerid == st_id) &&
-			    (local->st_stateid.si_fileid == f_id))
-				return local;
-		}
-	} 
-
-	if (flags & (OPEN_STATE | RD_STATE | WR_STATE)) {
-		hashval = stateid_hashval(st_id, f_id);
-		list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
-			if ((local->st_stateid.si_stateownerid == st_id) &&
-			    (local->st_stateid.si_fileid == f_id))
-				return local;
-		}
-	}
-	return NULL;
-}
-
-static struct nfs4_stateid *
-search_for_stateid(stateid_t *stid)
-{
-	struct nfs4_stateid *local;
-	unsigned int hashval = stateid_hashval(stid->si_stateownerid, stid->si_fileid);
-
-	list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
-		if (same_stateid(&local->st_stateid, stid))
-			return local;
-	}
-
-	list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
-		if (same_stateid(&local->st_stateid, stid))
-			return local;
-	}
-	return NULL;
-}
-
-static struct nfs4_delegation *
-search_for_delegation(stateid_t *stid)
-{
-	struct nfs4_file *fp;
-	struct nfs4_delegation *dp;
-	struct list_head *pos;
-	int i;
-
-	for (i = 0; i < FILE_HASH_SIZE; i++) {
-		list_for_each_entry(fp, &file_hashtbl[i], fi_hash) {
-			list_for_each(pos, &fp->fi_delegations) {
-				dp = list_entry(pos, struct nfs4_delegation, dl_perfile);
-				if (same_stateid(&dp->dl_stateid, stid))
-					return dp;
-			}
-		}
-	}
-	return NULL;
-}
-
-static struct nfs4_delegation *
-find_delegation_stateid(struct inode *ino, stateid_t *stid)
-{
-	struct nfs4_file *fp;
-	struct nfs4_delegation *dl;
-
-	dprintk("NFSD: %s: stateid=" STATEID_FMT "\n", __func__,
-		STATEID_VAL(stid));
-
-	fp = find_file(ino);
-	if (!fp)
-		return NULL;
-	dl = find_delegation_file(fp, stid);
-	put_nfs4_file(fp);
-	return dl;
-}
 
 /*
  * TODO: Linux file offsets are _signed_ 64-bit quantities, which means that
@@ -3846,15 +3782,21 @@ static const struct lock_manager_operations nfsd_posix_mng_ops  = {
 static inline void
 nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
 {
-	struct nfs4_stateowner *sop;
+	struct nfs4_lockowner *lo;
 
 	if (fl->fl_lmops == &nfsd_posix_mng_ops) {
-		sop = (struct nfs4_stateowner *) fl->fl_owner;
-		kref_get(&sop->so_ref);
-		deny->ld_sop = sop;
-		deny->ld_clientid = sop->so_client->cl_clientid;
+		lo = (struct nfs4_lockowner *) fl->fl_owner;
+		deny->ld_owner.data = kmemdup(lo->lo_owner.so_owner.data,
+					lo->lo_owner.so_owner.len, GFP_KERNEL);
+		if (!deny->ld_owner.data)
+			/* We just don't care that much */
+			goto nevermind;
+		deny->ld_owner.len = lo->lo_owner.so_owner.len;
+		deny->ld_clientid = lo->lo_owner.so_client->cl_clientid;
 	} else {
-		deny->ld_sop = NULL;
+nevermind:
+		deny->ld_owner.len = 0;
+		deny->ld_owner.data = NULL;
 		deny->ld_clientid.cl_boot = 0;
 		deny->ld_clientid.cl_id = 0;
 	}
@@ -3867,8 +3809,8 @@ nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
 		deny->ld_type = NFS4_WRITE_LT;
 }
 
-static struct nfs4_stateowner *
-find_lockstateowner_str(struct inode *inode, clientid_t *clid,
+static struct nfs4_lockowner *
+find_lockowner_str(struct inode *inode, clientid_t *clid,
 		struct xdr_netobj *owner)
 {
 	unsigned int hashval = lock_ownerstr_hashval(inode, clid->cl_id, owner);
@@ -3876,11 +3818,17 @@ find_lockstateowner_str(struct inode *inode, clientid_t *clid,
 
 	list_for_each_entry(op, &lock_ownerstr_hashtbl[hashval], so_strhash) {
 		if (same_owner_str(op, owner, clid))
-			return op;
+			return lockowner(op);
 	}
 	return NULL;
 }
 
+static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp)
+{
+	list_add(&lo->lo_owner.so_strhash, &lock_ownerstr_hashtbl[strhashval]);
+	list_add(&lo->lo_perstateid, &open_stp->st_lockowners);
+}
+
 /*
  * Alloc a lock owner structure.
  * Called in nfsd4_lock - therefore, OPEN and OPEN_CONFIRM (if needed) has 
@@ -3889,67 +3837,40 @@ find_lockstateowner_str(struct inode *inode, clientid_t *clid,
  * strhashval = lock_ownerstr_hashval 
  */
 
-static struct nfs4_stateowner *
-alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp, struct nfsd4_lock *lock) {
-	struct nfs4_stateowner *sop;
-	struct nfs4_replay *rp;
-	unsigned int idhashval;
+static struct nfs4_lockowner *
+alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp, struct nfsd4_lock *lock) {
+	struct nfs4_lockowner *lo;
 
-	if (!(sop = alloc_stateowner(&lock->lk_new_owner)))
+	lo = alloc_stateowner(lockowner_slab, &lock->lk_new_owner, clp);
+	if (!lo)
 		return NULL;
-	idhashval = lockownerid_hashval(current_ownerid);
-	INIT_LIST_HEAD(&sop->so_idhash);
-	INIT_LIST_HEAD(&sop->so_strhash);
-	INIT_LIST_HEAD(&sop->so_perclient);
-	INIT_LIST_HEAD(&sop->so_stateids);
-	INIT_LIST_HEAD(&sop->so_perstateid);
-	INIT_LIST_HEAD(&sop->so_close_lru); /* not used */
-	sop->so_time = 0;
-	list_add(&sop->so_idhash, &lock_ownerid_hashtbl[idhashval]);
-	list_add(&sop->so_strhash, &lock_ownerstr_hashtbl[strhashval]);
-	list_add(&sop->so_perstateid, &open_stp->st_lockowners);
-	sop->so_is_open_owner = 0;
-	sop->so_id = current_ownerid++;
-	sop->so_client = clp;
+	INIT_LIST_HEAD(&lo->lo_owner.so_stateids);
+	lo->lo_owner.so_is_open_owner = 0;
 	/* It is the openowner seqid that will be incremented in encode in the
 	 * case of new lockowners; so increment the lock seqid manually: */
-	sop->so_seqid = lock->lk_new_lock_seqid + 1;
-	sop->so_confirmed = 1;
-	rp = &sop->so_replay;
-	rp->rp_status = nfserr_serverfault;
-	rp->rp_buflen = 0;
-	rp->rp_buf = rp->rp_ibuf;
-	return sop;
+	lo->lo_owner.so_seqid = lock->lk_new_lock_seqid + 1;
+	hash_lockowner(lo, strhashval, clp, open_stp);
+	return lo;
 }
 
-static struct nfs4_stateid *
-alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struct nfs4_stateid *open_stp)
+static struct nfs4_ol_stateid *
+alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_ol_stateid *open_stp)
 {
-	struct nfs4_stateid *stp;
-	unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
+	struct nfs4_ol_stateid *stp;
+	struct nfs4_client *clp = lo->lo_owner.so_client;
 
-	stp = nfs4_alloc_stateid();
+	stp = nfs4_alloc_stateid(clp);
 	if (stp == NULL)
-		goto out;
-	INIT_LIST_HEAD(&stp->st_hash);
-	INIT_LIST_HEAD(&stp->st_perfile);
-	INIT_LIST_HEAD(&stp->st_perstateowner);
-	INIT_LIST_HEAD(&stp->st_lockowners); /* not used */
-	list_add(&stp->st_hash, &lockstateid_hashtbl[hashval]);
+		return NULL;
+	init_stid(&stp->st_stid, clp, NFS4_LOCK_STID);
 	list_add(&stp->st_perfile, &fp->fi_stateids);
-	list_add(&stp->st_perstateowner, &sop->so_stateids);
-	stp->st_stateowner = sop;
+	list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);
+	stp->st_stateowner = &lo->lo_owner;
 	get_nfs4_file(fp);
 	stp->st_file = fp;
-	stp->st_stateid.si_boot = boot_time;
-	stp->st_stateid.si_stateownerid = sop->so_id;
-	stp->st_stateid.si_fileid = fp->fi_id;
-	stp->st_stateid.si_generation = 0;
 	stp->st_access_bmap = 0;
 	stp->st_deny_bmap = open_stp->st_deny_bmap;
 	stp->st_openstp = open_stp;
-
-out:
 	return stp;
 }
 
@@ -3960,7 +3881,7 @@ check_lock_length(u64 offset, u64 length)
 	     LOFF_OVERFLOW(offset, length)));
 }
 
-static void get_lock_access(struct nfs4_stateid *lock_stp, u32 access)
+static void get_lock_access(struct nfs4_ol_stateid *lock_stp, u32 access)
 {
 	struct nfs4_file *fp = lock_stp->st_file;
 	int oflag = nfs4_access_to_omode(access);
@@ -3978,15 +3899,16 @@ __be32
 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	   struct nfsd4_lock *lock)
 {
-	struct nfs4_stateowner *open_sop = NULL;
-	struct nfs4_stateowner *lock_sop = NULL;
-	struct nfs4_stateid *lock_stp;
+	struct nfs4_openowner *open_sop = NULL;
+	struct nfs4_lockowner *lock_sop = NULL;
+	struct nfs4_ol_stateid *lock_stp;
 	struct nfs4_file *fp;
 	struct file *filp = NULL;
 	struct file_lock file_lock;
 	struct file_lock conflock;
 	__be32 status = 0;
 	unsigned int strhashval;
+	int lkflg;
 	int err;
 
 	dprintk("NFSD: nfsd4_lock: start=%Ld length=%Ld\n",
@@ -4010,7 +3932,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		 * Use open owner and open stateid to create lock owner and
 		 * lock stateid.
 		 */
-		struct nfs4_stateid *open_stp = NULL;
+		struct nfs4_ol_stateid *open_stp = NULL;
 		
 		status = nfserr_stale_clientid;
 		if (!nfsd4_has_session(cstate) &&
@@ -4018,26 +3940,29 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 			goto out;
 
 		/* validate and update open stateid and open seqid */
-		status = nfs4_preprocess_seqid_op(cstate,
+		status = nfs4_preprocess_confirmed_seqid_op(cstate,
 				        lock->lk_new_open_seqid,
 		                        &lock->lk_new_open_stateid,
-					OPEN_STATE,
-		                        &lock->lk_replay_owner, &open_stp,
-					lock);
+					&open_stp);
 		if (status)
 			goto out;
-		open_sop = lock->lk_replay_owner;
+		open_sop = openowner(open_stp->st_stateowner);
+		status = nfserr_bad_stateid;
+		if (!nfsd4_has_session(cstate) &&
+			!same_clid(&open_sop->oo_owner.so_client->cl_clientid,
+						&lock->v.new.clientid))
+			goto out;
 		/* create lockowner and lock stateid */
 		fp = open_stp->st_file;
-		strhashval = lock_ownerstr_hashval(fp->fi_inode, 
-				open_sop->so_client->cl_clientid.cl_id, 
+		strhashval = lock_ownerstr_hashval(fp->fi_inode,
+				open_sop->oo_owner.so_client->cl_clientid.cl_id,
 				&lock->v.new.owner);
 		/* XXX: Do we need to check for duplicate stateowners on
 		 * the same file, or should they just be allowed (and
 		 * create new stateids)? */
-		status = nfserr_resource;
+		status = nfserr_jukebox;
 		lock_sop = alloc_init_lock_stateowner(strhashval,
-				open_sop->so_client, open_stp, lock);
+				open_sop->oo_owner.so_client, open_stp, lock);
 		if (lock_sop == NULL)
 			goto out;
 		lock_stp = alloc_init_lock_stateid(lock_sop, fp, open_stp);
@@ -4046,16 +3971,20 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	} else {
 		/* lock (lock owner + lock stateid) already exists */
 		status = nfs4_preprocess_seqid_op(cstate,
-				       lock->lk_old_lock_seqid, 
-				       &lock->lk_old_lock_stateid, 
-				       LOCK_STATE,
-				       &lock->lk_replay_owner, &lock_stp, lock);
+				       lock->lk_old_lock_seqid,
+				       &lock->lk_old_lock_stateid,
+				       NFS4_LOCK_STID, &lock_stp);
 		if (status)
 			goto out;
-		lock_sop = lock->lk_replay_owner;
+		lock_sop = lockowner(lock_stp->st_stateowner);
 		fp = lock_stp->st_file;
 	}
-	/* lock->lk_replay_owner and lock_stp have been created or found */
+	/* lock_sop and lock_stp have been created or found */
+
+	lkflg = setlkflg(lock->lk_type);
+	status = nfs4_check_openmode(lock_stp, lkflg);
+	if (status)
+		goto out;
 
 	status = nfserr_grace;
 	if (locks_in_grace() && !lock->lk_reclaim)
@@ -4106,8 +4035,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	err = vfs_lock_file(filp, F_SETLK, &file_lock, &conflock);
 	switch (-err) {
 	case 0: /* success! */
-		update_stateid(&lock_stp->st_stateid);
-		memcpy(&lock->lk_resp_stateid, &lock_stp->st_stateid, 
+		update_stateid(&lock_stp->st_stid.sc_stateid);
+		memcpy(&lock->lk_resp_stateid, &lock_stp->st_stid.sc_stateid, 
 				sizeof(stateid_t));
 		status = 0;
 		break;
@@ -4119,19 +4048,16 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	case (EDEADLK):
 		status = nfserr_deadlock;
 		break;
-	default:        
+	default:
 		dprintk("NFSD: nfsd4_lock: vfs_lock_file() failed! status %d\n",err);
-		status = nfserr_resource;
+		status = nfserrno(err);
 		break;
 	}
 out:
 	if (status && lock->lk_is_new && lock_sop)
 		release_lockowner(lock_sop);
-	if (lock->lk_replay_owner) {
-		nfs4_get_stateowner(lock->lk_replay_owner);
-		cstate->replay_owner = lock->lk_replay_owner;
-	}
-	nfs4_unlock_state();
+	if (!cstate->replay_owner)
+		nfs4_unlock_state();
 	return status;
 }
 
@@ -4163,6 +4089,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 {
 	struct inode *inode;
 	struct file_lock file_lock;
+	struct nfs4_lockowner *lo;
 	int error;
 	__be32 status;
 
@@ -4172,19 +4099,14 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	if (check_lock_length(lockt->lt_offset, lockt->lt_length))
 		 return nfserr_inval;
 
-	lockt->lt_stateowner = NULL;
 	nfs4_lock_state();
 
 	status = nfserr_stale_clientid;
 	if (!nfsd4_has_session(cstate) && STALE_CLIENTID(&lockt->lt_clientid))
 		goto out;
 
-	if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {
-		dprintk("NFSD: nfsd4_lockt: fh_verify() failed!\n");
-		if (status == nfserr_symlink)
-			status = nfserr_inval;
+	if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
 		goto out;
-	}
 
 	inode = cstate->current_fh.fh_dentry->d_inode;
 	locks_init_lock(&file_lock);
@@ -4203,10 +4125,9 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		goto out;
 	}
 
-	lockt->lt_stateowner = find_lockstateowner_str(inode,
-			&lockt->lt_clientid, &lockt->lt_owner);
-	if (lockt->lt_stateowner)
-		file_lock.fl_owner = (fl_owner_t)lockt->lt_stateowner;
+	lo = find_lockowner_str(inode, &lockt->lt_clientid, &lockt->lt_owner);
+	if (lo)
+		file_lock.fl_owner = (fl_owner_t)lo;
 	file_lock.fl_pid = current->tgid;
 	file_lock.fl_flags = FL_POSIX;
 
@@ -4234,7 +4155,7 @@ __be32
 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	    struct nfsd4_locku *locku)
 {
-	struct nfs4_stateid *stp;
+	struct nfs4_ol_stateid *stp;
 	struct file *filp = NULL;
 	struct file_lock file_lock;
 	__be32 status;
@@ -4249,13 +4170,10 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	nfs4_lock_state();
 									        
-	if ((status = nfs4_preprocess_seqid_op(cstate,
-					locku->lu_seqid, 
-					&locku->lu_stateid, 
-					LOCK_STATE,
-					&locku->lu_stateowner, &stp, NULL)))
+	status = nfs4_preprocess_seqid_op(cstate, locku->lu_seqid,
+					&locku->lu_stateid, NFS4_LOCK_STID, &stp);
+	if (status)
 		goto out;
-
 	filp = find_any_file(stp->st_file);
 	if (!filp) {
 		status = nfserr_lock_range;
@@ -4264,7 +4182,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	BUG_ON(!filp);
 	locks_init_lock(&file_lock);
 	file_lock.fl_type = F_UNLCK;
-	file_lock.fl_owner = (fl_owner_t) locku->lu_stateowner;
+	file_lock.fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
 	file_lock.fl_pid = current->tgid;
 	file_lock.fl_file = filp;
 	file_lock.fl_flags = FL_POSIX; 
@@ -4285,15 +4203,12 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	/*
 	* OK, unlock succeeded; the only thing left to do is update the stateid.
 	*/
-	update_stateid(&stp->st_stateid);
-	memcpy(&locku->lu_stateid, &stp->st_stateid, sizeof(stateid_t));
+	update_stateid(&stp->st_stid.sc_stateid);
+	memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
 
 out:
-	if (locku->lu_stateowner) {
-		nfs4_get_stateowner(locku->lu_stateowner);
-		cstate->replay_owner = locku->lu_stateowner;
-	}
-	nfs4_unlock_state();
+	if (!cstate->replay_owner)
+		nfs4_unlock_state();
 	return status;
 
 out_nfserr:
@@ -4307,7 +4222,7 @@ out_nfserr:
  * 	0: no locks held by lockowner
  */
 static int
-check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner)
+check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner)
 {
 	struct file_lock **flpp;
 	struct inode *inode = filp->fi_inode;
@@ -4332,7 +4247,8 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
 {
 	clientid_t *clid = &rlockowner->rl_clientid;
 	struct nfs4_stateowner *sop;
-	struct nfs4_stateid *stp;
+	struct nfs4_lockowner *lo;
+	struct nfs4_ol_stateid *stp;
 	struct xdr_netobj *owner = &rlockowner->rl_owner;
 	struct list_head matches;
 	int i;
@@ -4356,16 +4272,15 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
 	 * data structures. */
 	INIT_LIST_HEAD(&matches);
 	for (i = 0; i < LOCK_HASH_SIZE; i++) {
-		list_for_each_entry(sop, &lock_ownerid_hashtbl[i], so_idhash) {
+		list_for_each_entry(sop, &lock_ownerstr_hashtbl[i], so_strhash) {
 			if (!same_owner_str(sop, owner, clid))
 				continue;
 			list_for_each_entry(stp, &sop->so_stateids,
 					st_perstateowner) {
-				if (check_for_locks(stp->st_file, sop))
+				lo = lockowner(sop);
+				if (check_for_locks(stp->st_file, lo))
 					goto out;
-				/* Note: so_perclient unused for lockowners,
-				 * so it's OK to fool with here. */
-				list_add(&sop->so_perclient, &matches);
+				list_add(&lo->lo_list, &matches);
 			}
 		}
 	}
@@ -4374,12 +4289,12 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
 	 * have been checked. */
 	status = nfs_ok;
 	while (!list_empty(&matches)) {
-		sop = list_entry(matches.next, struct nfs4_stateowner,
-								so_perclient);
+		lo = list_entry(matches.next, struct nfs4_lockowner,
+								lo_list);
 		/* unhash_stateowner deletes so_perclient only
 		 * for openowners. */
-		list_del(&sop->so_perclient);
-		release_lockowner(sop);
+		list_del(&lo->lo_list);
+		release_lockowner(lo);
 	}
 out:
 	nfs4_unlock_state();
@@ -4501,16 +4416,10 @@ nfs4_state_init(void)
 	for (i = 0; i < FILE_HASH_SIZE; i++) {
 		INIT_LIST_HEAD(&file_hashtbl[i]);
 	}
-	for (i = 0; i < OWNER_HASH_SIZE; i++) {
-		INIT_LIST_HEAD(&ownerstr_hashtbl[i]);
-		INIT_LIST_HEAD(&ownerid_hashtbl[i]);
-	}
-	for (i = 0; i < STATEID_HASH_SIZE; i++) {
-		INIT_LIST_HEAD(&stateid_hashtbl[i]);
-		INIT_LIST_HEAD(&lockstateid_hashtbl[i]);
+	for (i = 0; i < OPEN_OWNER_HASH_SIZE; i++) {
+		INIT_LIST_HEAD(&open_ownerstr_hashtbl[i]);
 	}
 	for (i = 0; i < LOCK_HASH_SIZE; i++) {
-		INIT_LIST_HEAD(&lock_ownerid_hashtbl[i]);
 		INIT_LIST_HEAD(&lock_ownerstr_hashtbl[i]);
 	}
 	memset(&onestateid, ~0, sizeof(stateid_t));
@@ -4527,7 +4436,7 @@ nfsd4_load_reboot_recovery_data(void)
 	int status;
 
 	nfs4_lock_state();
-	nfsd4_init_recdir(user_recovery_dirname);
+	nfsd4_init_recdir();
 	status = nfsd4_recdir_load();
 	nfs4_unlock_state();
 	if (status)
@@ -4636,40 +4545,3 @@ nfs4_state_shutdown(void)
 	nfs4_unlock_state();
 	nfsd4_destroy_callback_queue();
 }
-
-/*
- * user_recovery_dirname is protected by the nfsd_mutex since it's only
- * accessed when nfsd is starting.
- */
-static void
-nfs4_set_recdir(char *recdir)
-{
-	strcpy(user_recovery_dirname, recdir);
-}
-
-/*
- * Change the NFSv4 recovery directory to recdir.
- */
-int
-nfs4_reset_recoverydir(char *recdir)
-{
-	int status;
-	struct path path;
-
-	status = kern_path(recdir, LOOKUP_FOLLOW, &path);
-	if (status)
-		return status;
-	status = -ENOTDIR;
-	if (S_ISDIR(path.dentry->d_inode->i_mode)) {
-		nfs4_set_recdir(recdir);
-		status = 0;
-	}
-	path_put(&path);
-	return status;
-}
-
-char *
-nfs4_recoverydir(void)
-{
-	return user_recovery_dirname;
-}
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index c8bf405d19de..66d095d7955e 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -456,7 +456,6 @@ nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
 {
 	DECODE_HEAD;
 
-	close->cl_stateowner = NULL;
 	READ_BUF(4);
 	READ32(close->cl_seqid);
 	return nfsd4_decode_stateid(argp, &close->cl_stateid);
@@ -551,7 +550,6 @@ nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
 {
 	DECODE_HEAD;
 
-	lock->lk_replay_owner = NULL;
 	/*
 	* type, reclaim(boolean), offset, length, new_lock_owner(boolean)
 	*/
@@ -611,7 +609,6 @@ nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
 {
 	DECODE_HEAD;
 
-	locku->lu_stateowner = NULL;
 	READ_BUF(8);
 	READ32(locku->lu_type);
 	if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
@@ -642,6 +639,83 @@ nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup
 	DECODE_TAIL;
 }
 
+static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x)
+{
+	__be32 *p;
+	u32 w;
+
+	READ_BUF(4);
+	READ32(w);
+	*x = w;
+	switch (w & NFS4_SHARE_ACCESS_MASK) {
+	case NFS4_SHARE_ACCESS_READ:
+	case NFS4_SHARE_ACCESS_WRITE:
+	case NFS4_SHARE_ACCESS_BOTH:
+		break;
+	default:
+		return nfserr_bad_xdr;
+	}
+	w &= !NFS4_SHARE_ACCESS_MASK;
+	if (!w)
+		return nfs_ok;
+	if (!argp->minorversion)
+		return nfserr_bad_xdr;
+	switch (w & NFS4_SHARE_WANT_MASK) {
+	case NFS4_SHARE_WANT_NO_PREFERENCE:
+	case NFS4_SHARE_WANT_READ_DELEG:
+	case NFS4_SHARE_WANT_WRITE_DELEG:
+	case NFS4_SHARE_WANT_ANY_DELEG:
+	case NFS4_SHARE_WANT_NO_DELEG:
+	case NFS4_SHARE_WANT_CANCEL:
+		break;
+	default:
+		return nfserr_bad_xdr;
+	}
+	w &= ~NFS4_SHARE_WANT_MASK;
+	if (!w)
+		return nfs_ok;
+	switch (w) {
+	case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL:
+	case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED:
+	case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL |
+	      NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED):
+		return nfs_ok;
+	}
+xdr_error:
+	return nfserr_bad_xdr;
+}
+
+static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x)
+{
+	__be32 *p;
+
+	READ_BUF(4);
+	READ32(*x);
+	/* Note: unlinke access bits, deny bits may be zero. */
+	if (*x & ~NFS4_SHARE_DENY_BOTH)
+		return nfserr_bad_xdr;
+	return nfs_ok;
+xdr_error:
+	return nfserr_bad_xdr;
+}
+
+static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o)
+{
+	__be32 *p;
+
+	READ_BUF(4);
+	READ32(o->len);
+
+	if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT)
+		return nfserr_bad_xdr;
+
+	READ_BUF(o->len);
+	SAVEMEM(o->data, o->len);
+	return nfs_ok;
+xdr_error:
+	return nfserr_bad_xdr;
+}
+
 static __be32
 nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
 {
@@ -649,19 +723,23 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
 
 	memset(open->op_bmval, 0, sizeof(open->op_bmval));
 	open->op_iattr.ia_valid = 0;
-	open->op_stateowner = NULL;
+	open->op_openowner = NULL;
 
 	/* seqid, share_access, share_deny, clientid, ownerlen */
-	READ_BUF(16 + sizeof(clientid_t));
+	READ_BUF(4);
 	READ32(open->op_seqid);
-	READ32(open->op_share_access);
-	READ32(open->op_share_deny);
+	status = nfsd4_decode_share_access(argp, &open->op_share_access);
+	if (status)
+		goto xdr_error;
+	status = nfsd4_decode_share_deny(argp, &open->op_share_deny);
+	if (status)
+		goto xdr_error;
+	READ_BUF(sizeof(clientid_t));
 	COPYMEM(&open->op_clientid, sizeof(clientid_t));
-	READ32(open->op_owner.len);
-
-	/* owner, open_flag */
-	READ_BUF(open->op_owner.len + 4);
-	SAVEMEM(open->op_owner.data, open->op_owner.len);
+	status = nfsd4_decode_opaque(argp, &open->op_owner);
+	if (status)
+		goto xdr_error;
+	READ_BUF(4);
 	READ32(open->op_create);
 	switch (open->op_create) {
 	case NFS4_OPEN_NOCREATE:
@@ -727,6 +805,19 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
 		if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
 			return status;
 		break;
+	case NFS4_OPEN_CLAIM_FH:
+	case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
+		if (argp->minorversion < 1)
+			goto xdr_error;
+		/* void */
+		break;
+	case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
+		if (argp->minorversion < 1)
+			goto xdr_error;
+		status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
+		if (status)
+			return status;
+		break;
 	default:
 		goto xdr_error;
 	}
@@ -739,7 +830,6 @@ nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_con
 {
 	DECODE_HEAD;
 		    
-	open_conf->oc_stateowner = NULL;
 	status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);
 	if (status)
 		return status;
@@ -754,15 +844,17 @@ nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_d
 {
 	DECODE_HEAD;
 		    
-	open_down->od_stateowner = NULL;
 	status = nfsd4_decode_stateid(argp, &open_down->od_stateid);
 	if (status)
 		return status;
-	READ_BUF(12);
+	READ_BUF(4);
 	READ32(open_down->od_seqid);
-	READ32(open_down->od_share_access);
-	READ32(open_down->od_share_deny);
-						        
+	status = nfsd4_decode_share_access(argp, &open_down->od_share_access);
+	if (status)
+		return status;
+	status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny);
+	if (status)
+		return status;
 	DECODE_TAIL;
 }
 
@@ -903,12 +995,13 @@ nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclient
 {
 	DECODE_HEAD;
 
-	READ_BUF(12);
+	READ_BUF(8);
 	COPYMEM(setclientid->se_verf.data, 8);
-	READ32(setclientid->se_namelen);
 
-	READ_BUF(setclientid->se_namelen + 8);
-	SAVEMEM(setclientid->se_name, setclientid->se_namelen);
+	status = nfsd4_decode_opaque(argp, &setclientid->se_name);
+	if (status)
+		return nfserr_bad_xdr;
+	READ_BUF(8);
 	READ32(setclientid->se_callback_prog);
 	READ32(setclientid->se_callback_netid_len);
 
@@ -1051,11 +1144,9 @@ nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
 	READ_BUF(NFS4_VERIFIER_SIZE);
 	COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
 
-	READ_BUF(4);
-	READ32(exid->clname.len);
-
-	READ_BUF(exid->clname.len);
-	SAVEMEM(exid->clname.data, exid->clname.len);
+	status = nfsd4_decode_opaque(argp, &exid->clname);
+	if (status)
+		return nfserr_bad_xdr;
 
 	READ_BUF(4);
 	READ32(exid->flags);
@@ -1326,6 +1417,16 @@ xdr_error:
 	goto out;
 }
 
+static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc)
+{
+	DECODE_HEAD;
+
+	READ_BUF(8);
+	COPYMEM(&dc->clientid, 8);
+
+	DECODE_TAIL;
+}
+
 static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc)
 {
 	DECODE_HEAD;
@@ -1447,7 +1548,7 @@ static nfsd4_dec nfsd41_dec_ops[] = {
 	[OP_SET_SSV]		= (nfsd4_dec)nfsd4_decode_notsupp,
 	[OP_TEST_STATEID]	= (nfsd4_dec)nfsd4_decode_test_stateid,
 	[OP_WANT_DELEGATION]	= (nfsd4_dec)nfsd4_decode_notsupp,
-	[OP_DESTROY_CLIENTID]	= (nfsd4_dec)nfsd4_decode_notsupp,
+	[OP_DESTROY_CLIENTID]	= (nfsd4_dec)nfsd4_decode_destroy_clientid,
 	[OP_RECLAIM_COMPLETE]	= (nfsd4_dec)nfsd4_decode_reclaim_complete,
 };
 
@@ -1630,15 +1731,20 @@ static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
  * we know whether the error to be returned is a sequence id mutating error.
  */
 
-#define ENCODE_SEQID_OP_TAIL(stateowner) do {			\
-	if (seqid_mutating_err(nfserr) && stateowner) { 	\
-		stateowner->so_seqid++;				\
-		stateowner->so_replay.rp_status = nfserr;   	\
-		stateowner->so_replay.rp_buflen = 		\
-			  (((char *)(resp)->p - (char *)save)); \
-		memcpy(stateowner->so_replay.rp_buf, save,      \
- 			stateowner->so_replay.rp_buflen); 	\
-	} } while (0);
+static void encode_seqid_op_tail(struct nfsd4_compoundres *resp, __be32 *save, __be32 nfserr)
+{
+	struct nfs4_stateowner *stateowner = resp->cstate.replay_owner;
+
+	if (seqid_mutating_err(ntohl(nfserr)) && stateowner) {
+		stateowner->so_seqid++;
+		stateowner->so_replay.rp_status = nfserr;
+		stateowner->so_replay.rp_buflen =
+			  (char *)resp->p - (char *)save;
+		memcpy(stateowner->so_replay.rp_buf, save,
+			stateowner->so_replay.rp_buflen);
+		nfsd4_purge_closed_stateid(stateowner);
+	}
+}
 
 /* Encode as an array of strings the string given with components
  * separated @sep.
@@ -1697,36 +1803,89 @@ static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location,
 }
 
 /*
- * Return the path to an export point in the pseudo filesystem namespace
- * Returned string is safe to use as long as the caller holds a reference
- * to @exp.
+ * Encode a path in RFC3530 'pathname4' format
  */
-static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat)
+static __be32 nfsd4_encode_path(const struct path *root,
+		const struct path *path, __be32 **pp, int *buflen)
 {
-	struct svc_fh tmp_fh;
-	char *path = NULL, *rootpath;
-	size_t rootlen;
+	struct path cur = {
+		.mnt = path->mnt,
+		.dentry = path->dentry,
+	};
+	__be32 *p = *pp;
+	struct dentry **components = NULL;
+	unsigned int ncomponents = 0;
+	__be32 err = nfserr_jukebox;
 
-	fh_init(&tmp_fh, NFS4_FHSIZE);
-	*stat = exp_pseudoroot(rqstp, &tmp_fh);
-	if (*stat)
-		return NULL;
-	rootpath = tmp_fh.fh_export->ex_pathname;
+	dprintk("nfsd4_encode_components(");
 
-	path = exp->ex_pathname;
+	path_get(&cur);
+	/* First walk the path up to the nfsd root, and store the
+	 * dentries/path components in an array.
+	 */
+	for (;;) {
+		if (cur.dentry == root->dentry && cur.mnt == root->mnt)
+			break;
+		if (cur.dentry == cur.mnt->mnt_root) {
+			if (follow_up(&cur))
+				continue;
+			goto out_free;
+		}
+		if ((ncomponents & 15) == 0) {
+			struct dentry **new;
+			new = krealloc(components,
+					sizeof(*new) * (ncomponents + 16),
+					GFP_KERNEL);
+			if (!new)
+				goto out_free;
+			components = new;
+		}
+		components[ncomponents++] = cur.dentry;
+		cur.dentry = dget_parent(cur.dentry);
+	}
 
-	rootlen = strlen(rootpath);
-	if (strncmp(path, rootpath, rootlen)) {
-		dprintk("nfsd: fs_locations failed;"
-			"%s is not contained in %s\n", path, rootpath);
-		*stat = nfserr_notsupp;
-		path = NULL;
-		goto out;
+	*buflen -= 4;
+	if (*buflen < 0)
+		goto out_free;
+	WRITE32(ncomponents);
+
+	while (ncomponents) {
+		struct dentry *dentry = components[ncomponents - 1];
+		unsigned int len = dentry->d_name.len;
+
+		*buflen -= 4 + (XDR_QUADLEN(len) << 2);
+		if (*buflen < 0)
+			goto out_free;
+		WRITE32(len);
+		WRITEMEM(dentry->d_name.name, len);
+		dprintk("/%s", dentry->d_name.name);
+		dput(dentry);
+		ncomponents--;
 	}
-	path += rootlen;
-out:
-	fh_put(&tmp_fh);
-	return path;
+
+	*pp = p;
+	err = 0;
+out_free:
+	dprintk(")\n");
+	while (ncomponents)
+		dput(components[--ncomponents]);
+	kfree(components);
+	path_put(&cur);
+	return err;
+}
+
+static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp,
+		const struct path *path, __be32 **pp, int *buflen)
+{
+	struct svc_export *exp_ps;
+	__be32 res;
+
+	exp_ps = rqst_find_fsidzero_export(rqstp);
+	if (IS_ERR(exp_ps))
+		return nfserrno(PTR_ERR(exp_ps));
+	res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen);
+	exp_put(exp_ps);
+	return res;
 }
 
 /*
@@ -1740,11 +1899,8 @@ static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
 	int i;
 	__be32 *p = *pp;
 	struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
-	char *root = nfsd4_path(rqstp, exp, &status);
 
-	if (status)
-		return status;
-	status = nfsd4_encode_components('/', root, &p, buflen);
+	status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen);
 	if (status)
 		return status;
 	if ((*buflen -= 4) < 0)
@@ -1760,12 +1916,19 @@ static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
 	return 0;
 }
 
-static u32 nfs4_ftypes[16] = {
-        NF4BAD,  NF4FIFO, NF4CHR, NF4BAD,
-        NF4DIR,  NF4BAD,  NF4BLK, NF4BAD,
-        NF4REG,  NF4BAD,  NF4LNK, NF4BAD,
-        NF4SOCK, NF4BAD,  NF4LNK, NF4BAD,
-};
+static u32 nfs4_file_type(umode_t mode)
+{
+	switch (mode & S_IFMT) {
+	case S_IFIFO:	return NF4FIFO;
+	case S_IFCHR:	return NF4CHR;
+	case S_IFDIR:	return NF4DIR;
+	case S_IFBLK:	return NF4BLK;
+	case S_IFLNK:	return NF4LNK;
+	case S_IFREG:	return NF4REG;
+	case S_IFSOCK:	return NF4SOCK;
+	default:	return NF4BAD;
+	};
+}
 
 static __be32
 nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
@@ -1954,7 +2117,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 	if (bmval0 & FATTR4_WORD0_TYPE) {
 		if ((buflen -= 4) < 0)
 			goto out_resource;
-		dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12];
+		dummy = nfs4_file_type(stat.mode);
 		if (dummy == NF4BAD)
 			goto out_serverfault;
 		WRITE32(dummy);
@@ -2488,7 +2651,7 @@ nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_c
 	if (!nfserr)
 		nfsd4_encode_stateid(resp, &close->cl_stateid);
 
-	ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
+	encode_seqid_op_tail(resp, save, nfserr);
 	return nfserr;
 }
 
@@ -2564,17 +2727,18 @@ nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh
 static void
 nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
 {
+	struct xdr_netobj *conf = &ld->ld_owner;
 	__be32 *p;
 
-	RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
+	RESERVE_SPACE(32 + XDR_LEN(conf->len));
 	WRITE64(ld->ld_start);
 	WRITE64(ld->ld_length);
 	WRITE32(ld->ld_type);
-	if (ld->ld_sop) {
+	if (conf->len) {
 		WRITEMEM(&ld->ld_clientid, 8);
-		WRITE32(ld->ld_sop->so_owner.len);
-		WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len);
-		kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner);
+		WRITE32(conf->len);
+		WRITEMEM(conf->data, conf->len);
+		kfree(conf->data);
 	}  else {  /* non - nfsv4 lock in conflict, no clientid nor owner */
 		WRITE64((u64)0); /* clientid */
 		WRITE32(0); /* length of owner name */
@@ -2592,7 +2756,7 @@ nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lo
 	else if (nfserr == nfserr_denied)
 		nfsd4_encode_lock_denied(resp, &lock->lk_denied);
 
-	ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
+	encode_seqid_op_tail(resp, save, nfserr);
 	return nfserr;
 }
 
@@ -2612,7 +2776,7 @@ nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_l
 	if (!nfserr)
 		nfsd4_encode_stateid(resp, &locku->lu_stateid);
 
-	ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
+	encode_seqid_op_tail(resp, save, nfserr);
 	return nfserr;
 }
 
@@ -2693,7 +2857,7 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
 	}
 	/* XXX save filehandle here */
 out:
-	ENCODE_SEQID_OP_TAIL(open->op_stateowner);
+	encode_seqid_op_tail(resp, save, nfserr);
 	return nfserr;
 }
 
@@ -2705,7 +2869,7 @@ nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct
 	if (!nfserr)
 		nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
 
-	ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
+	encode_seqid_op_tail(resp, save, nfserr);
 	return nfserr;
 }
 
@@ -2717,7 +2881,7 @@ nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struc
 	if (!nfserr)
 		nfsd4_encode_stateid(resp, &od->od_stateid);
 
-	ENCODE_SEQID_OP_TAIL(od->od_stateowner);
+	encode_seqid_op_tail(resp, save, nfserr);
 	return nfserr;
 }
 
@@ -2759,8 +2923,6 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
 			read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
 			&maxcount);
 
-	if (nfserr == nfserr_symlink)
-		nfserr = nfserr_inval;
 	if (nfserr)
 		return nfserr;
 	eof = (read->rd_offset + maxcount >=
@@ -2886,8 +3048,6 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
 	    readdir->common.err == nfserr_toosmall &&
 	    readdir->buffer == page) 
 		nfserr = nfserr_toosmall;
-	if (nfserr == nfserr_symlink)
-		nfserr = nfserr_notdir;
 	if (nfserr)
 		goto err_no_verf;
 
@@ -3218,9 +3378,9 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
 	WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
 	WRITE32(seq->seqid);
 	WRITE32(seq->slotid);
-	WRITE32(seq->maxslots);
-	/* For now: target_maxslots = maxslots */
-	WRITE32(seq->maxslots);
+	/* Note slotid's are numbered from zero: */
+	WRITE32(seq->maxslots - 1); /* sr_highest_slotid */
+	WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */
 	WRITE32(seq->status_flags);
 
 	ADJUST_ARGS();
@@ -3233,6 +3393,7 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
 			  struct nfsd4_test_stateid *test_stateid)
 {
 	struct nfsd4_compoundargs *argp;
+	struct nfs4_client *cl = resp->cstate.session->se_client;
 	stateid_t si;
 	__be32 *p;
 	int i;
@@ -3248,7 +3409,7 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
 	nfs4_lock_state();
 	for (i = 0; i < test_stateid->ts_num_ids; i++) {
 		nfsd4_decode_stateid(argp, &si);
-		valid = nfs4_validate_stateid(&si, test_stateid->ts_has_session);
+		valid = nfs4_validate_stateid(cl, &si);
 		RESERVE_SPACE(4);
 		*p++ = htonl(valid);
 		resp->p = p;
@@ -3334,34 +3495,29 @@ static nfsd4_enc nfsd4_enc_ops[] = {
 
 /*
  * Calculate the total amount of memory that the compound response has taken
- * after encoding the current operation.
+ * after encoding the current operation with pad.
  *
- * pad: add on 8 bytes for the next operation's op_code and status so that
- * there is room to cache a failure on the next operation.
+ * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop()
+ *      which was specified at nfsd4_operation, else pad is zero.
  *
- * Compare this length to the session se_fmaxresp_cached.
+ * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached.
  *
  * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
  * will be at least a page and will therefore hold the xdr_buf head.
  */
-static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
+int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
 {
-	int status = 0;
 	struct xdr_buf *xb = &resp->rqstp->rq_res;
-	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
 	struct nfsd4_session *session = NULL;
 	struct nfsd4_slot *slot = resp->cstate.slot;
-	u32 length, tlen = 0, pad = 8;
+	u32 length, tlen = 0;
 
 	if (!nfsd4_has_session(&resp->cstate))
-		return status;
+		return 0;
 
 	session = resp->cstate.session;
-	if (session == NULL || slot->sl_cachethis == 0)
-		return status;
-
-	if (resp->opcnt >= args->opcnt)
-		pad = 0; /* this is the last operation */
+	if (session == NULL)
+		return 0;
 
 	if (xb->page_len == 0) {
 		length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
@@ -3374,10 +3530,14 @@ static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
 	dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
 		length, xb->page_len, tlen, pad);
 
-	if (length <= session->se_fchannel.maxresp_cached)
-		return status;
-	else
+	if (length > session->se_fchannel.maxresp_sz)
+		return nfserr_rep_too_big;
+
+	if (slot->sl_cachethis == 1 &&
+	    length > session->se_fchannel.maxresp_cached)
 		return nfserr_rep_too_big_to_cache;
+
+	return 0;
 }
 
 void
@@ -3397,8 +3557,8 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
 	       !nfsd4_enc_ops[op->opnum]);
 	op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
 	/* nfsd4_check_drc_limit guarantees enough room for error status */
-	if (!op->status && nfsd4_check_drc_limit(resp))
-		op->status = nfserr_rep_too_big_to_cache;
+	if (!op->status)
+		op->status = nfsd4_check_resp_size(resp, 0);
 status:
 	/*
 	 * Note: We write the status directly, instead of using WRITE32(),
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index c7716143cbd1..db34a585e112 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -9,7 +9,6 @@
 #include <linux/ctype.h>
 
 #include <linux/sunrpc/svcsock.h>
-#include <linux/nfsd/syscall.h>
 #include <linux/lockd/lockd.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/gss_api.h>
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 7ecfa2420307..58134a23fdfb 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -11,13 +11,39 @@
 #include <linux/types.h>
 #include <linux/mount.h>
 
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs3.h>
+#include <linux/nfs4.h>
+#include <linux/sunrpc/msg_prot.h>
+
 #include <linux/nfsd/debug.h>
 #include <linux/nfsd/export.h>
 #include <linux/nfsd/stats.h>
+
 /*
  * nfsd version
  */
 #define NFSD_SUPPORTED_MINOR_VERSION	1
+/*
+ * Maximum blocksizes supported by daemon under various circumstances.
+ */
+#define NFSSVC_MAXBLKSIZE       RPCSVC_MAXPAYLOAD
+/* NFSv2 is limited by the protocol specification, see RFC 1094 */
+#define NFSSVC_MAXBLKSIZE_V2    (8*1024)
+
+
+/*
+ * Largest number of bytes we need to allocate for an NFS
+ * call or reply.  Used to control buffer sizes.  We use
+ * the length of v3 WRITE, READDIR and READDIR replies
+ * which are an RPC header, up to 26 XDR units of reply
+ * data, and some page data.
+ *
+ * Note that accuracy here doesn't matter too much as the
+ * size is rounded up to a page size when allocating space.
+ */
+#define NFSD_BUFSIZE            ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
 
 struct readdir_cd {
 	__be32			err;	/* 0, nfserr, or nfserr_eof */
@@ -335,6 +361,13 @@ static inline u32 nfsd_suppattrs2(u32 minorversion)
 #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
 	NFSD_WRITEABLE_ATTRS_WORD2
 
+extern int nfsd4_is_junction(struct dentry *dentry);
+#else
+static inline int nfsd4_is_junction(struct dentry *dentry)
+{
+	return 0;
+}
+
 #endif /* CONFIG_NFSD_V4 */
 
 #endif /* LINUX_NFSD_NFSD_H */
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 90c6aa6d5e0f..c763de5c1157 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -59,28 +59,25 @@ static int nfsd_acceptable(void *expv, struct dentry *dentry)
  * the write call).
  */
 static inline __be32
-nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int type)
+nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int requested)
 {
-	/* Type can be negative when creating hardlinks - not to a dir */
-	if (type > 0 && (mode & S_IFMT) != type) {
-		if (rqstp->rq_vers == 4 && (mode & S_IFMT) == S_IFLNK)
-			return nfserr_symlink;
-		else if (type == S_IFDIR)
-			return nfserr_notdir;
-		else if ((mode & S_IFMT) == S_IFDIR)
-			return nfserr_isdir;
-		else
-			return nfserr_inval;
-	}
-	if (type < 0 && (mode & S_IFMT) == -type) {
-		if (rqstp->rq_vers == 4 && (mode & S_IFMT) == S_IFLNK)
-			return nfserr_symlink;
-		else if (type == -S_IFDIR)
-			return nfserr_isdir;
-		else
-			return nfserr_notdir;
-	}
-	return 0;
+	mode &= S_IFMT;
+
+	if (requested == 0) /* the caller doesn't care */
+		return nfs_ok;
+	if (mode == requested)
+		return nfs_ok;
+	/*
+	 * v4 has an error more specific than err_notdir which we should
+	 * return in preference to err_notdir:
+	 */
+	if (rqstp->rq_vers == 4 && mode == S_IFLNK)
+		return nfserr_symlink;
+	if (requested == S_IFDIR)
+		return nfserr_notdir;
+	if (mode == S_IFDIR)
+		return nfserr_isdir;
+	return nfserr_inval;
 }
 
 static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 4eefaf1b42e8..a3cf38476a1b 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -35,6 +35,7 @@
 #ifndef _NFSD4_STATE_H
 #define _NFSD4_STATE_H
 
+#include <linux/idr.h>
 #include <linux/sunrpc/svc_xprt.h>
 #include <linux/nfsd/nfsfh.h>
 #include "nfsfh.h"
@@ -45,24 +46,20 @@ typedef struct {
 } clientid_t;
 
 typedef struct {
-	u32             so_boot;
-	u32             so_stateownerid;
-	u32             so_fileid;
+	clientid_t	so_clid;
+	u32		so_id;
 } stateid_opaque_t;
 
 typedef struct {
 	u32                     si_generation;
 	stateid_opaque_t        si_opaque;
 } stateid_t;
-#define si_boot           si_opaque.so_boot
-#define si_stateownerid   si_opaque.so_stateownerid
-#define si_fileid         si_opaque.so_fileid
 
 #define STATEID_FMT	"(%08x/%08x/%08x/%08x)"
 #define STATEID_VAL(s) \
-	(s)->si_boot, \
-	(s)->si_stateownerid, \
-	(s)->si_fileid, \
+	(s)->si_opaque.so_clid.cl_boot, \
+	(s)->si_opaque.so_clid.cl_id, \
+	(s)->si_opaque.so_id, \
 	(s)->si_generation
 
 struct nfsd4_callback {
@@ -76,17 +73,27 @@ struct nfsd4_callback {
 	bool cb_done;
 };
 
+struct nfs4_stid {
+#define NFS4_OPEN_STID 1
+#define NFS4_LOCK_STID 2
+#define NFS4_DELEG_STID 4
+/* For an open stateid kept around *only* to process close replays: */
+#define NFS4_CLOSED_STID 8
+	unsigned char sc_type;
+	stateid_t sc_stateid;
+	struct nfs4_client *sc_client;
+};
+
 struct nfs4_delegation {
+	struct nfs4_stid	dl_stid; /* must be first field */
 	struct list_head	dl_perfile;
 	struct list_head	dl_perclnt;
 	struct list_head	dl_recall_lru;  /* delegation recalled */
 	atomic_t		dl_count;       /* ref count */
-	struct nfs4_client	*dl_client;
 	struct nfs4_file	*dl_file;
 	u32			dl_type;
 	time_t			dl_time;
 /* For recall: */
-	stateid_t		dl_stateid;
 	struct knfsd_fh		dl_fh;
 	int			dl_retries;
 	struct nfsd4_callback	dl_recall;
@@ -104,6 +111,11 @@ struct nfs4_cb_conn {
 	struct svc_xprt		*cb_xprt;	/* minorversion 1 only */
 };
 
+static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s)
+{
+	return container_of(s, struct nfs4_delegation, dl_stid);
+}
+
 /* Maximum number of slots per session. 160 is useful for long haul TCP */
 #define NFSD_MAX_SLOTS_PER_SESSION     160
 /* Maximum number of operations per session compound */
@@ -220,6 +232,7 @@ struct nfs4_client {
 	struct list_head	cl_idhash; 	/* hash by cl_clientid.id */
 	struct list_head	cl_strhash; 	/* hash by cl_name */
 	struct list_head	cl_openowners;
+	struct idr		cl_stateids;	/* stateid lookup */
 	struct list_head	cl_delegations;
 	struct list_head        cl_lru;         /* tail queue */
 	struct xdr_netobj	cl_name; 	/* id generated by client */
@@ -245,6 +258,7 @@ struct nfs4_client {
 #define NFSD4_CB_UP		0
 #define NFSD4_CB_UNKNOWN	1
 #define NFSD4_CB_DOWN		2
+#define NFSD4_CB_FAULT		3
 	int			cl_cb_state;
 	struct nfsd4_callback	cl_cb_null;
 	struct nfsd4_session	*cl_cb_session;
@@ -293,6 +307,9 @@ static inline void
 update_stateid(stateid_t *stateid)
 {
 	stateid->si_generation++;
+	/* Wraparound recommendation from 3530bis-13 9.1.3.2: */
+	if (stateid->si_generation == 0)
+		stateid->si_generation = 1;
 }
 
 /* A reasonable value for REPLAY_ISIZE was estimated as follows:  
@@ -312,49 +329,57 @@ struct nfs4_replay {
 	__be32			rp_status;
 	unsigned int		rp_buflen;
 	char			*rp_buf;
-	unsigned		intrp_allocated;
 	struct knfsd_fh		rp_openfh;
 	char			rp_ibuf[NFSD4_REPLAY_ISIZE];
 };
 
-/*
-* nfs4_stateowner can either be an open_owner, or a lock_owner
-*
-*    so_idhash:  stateid_hashtbl[] for open owner, lockstateid_hashtbl[]
-*         for lock_owner
-*    so_strhash: ownerstr_hashtbl[] for open_owner, lock_ownerstr_hashtbl[]
-*         for lock_owner
-*    so_perclient: nfs4_client->cl_perclient entry - used when nfs4_client
-*         struct is reaped.
-*    so_perfilestate: heads the list of nfs4_stateid (either open or lock) 
-*         and is used to ensure no dangling nfs4_stateid references when we 
-*         release a stateowner.
-*    so_perlockowner: (open) nfs4_stateid->st_perlockowner entry - used when
-*         close is called to reap associated byte-range locks
-*    so_close_lru: (open) stateowner is placed on this list instead of being
-*         reaped (when so_perfilestate is empty) to hold the last close replay.
-*         reaped by laundramat thread after lease period.
-*/
 struct nfs4_stateowner {
-	struct kref		so_ref;
-	struct list_head        so_idhash;   /* hash by so_id */
 	struct list_head        so_strhash;   /* hash by op_name */
-	struct list_head        so_perclient;
 	struct list_head        so_stateids;
-	struct list_head        so_perstateid; /* for lockowners only */
-	struct list_head	so_close_lru; /* tail queue */
-	time_t			so_time; /* time of placement on so_close_lru */
-	int			so_is_open_owner; /* 1=openowner,0=lockowner */
-	u32                     so_id;
 	struct nfs4_client *    so_client;
 	/* after increment in ENCODE_SEQID_OP_TAIL, represents the next
 	 * sequence id expected from the client: */
 	u32                     so_seqid;
 	struct xdr_netobj       so_owner;     /* open owner name */
-	int                     so_confirmed; /* successful OPEN_CONFIRM? */
 	struct nfs4_replay	so_replay;
+	bool			so_is_open_owner;
 };
 
+struct nfs4_openowner {
+	struct nfs4_stateowner	oo_owner; /* must be first field */
+	struct list_head        oo_perclient;
+	/*
+	 * We keep around openowners a little while after last close,
+	 * which saves clients from having to confirm, and allows us to
+	 * handle close replays if they come soon enough.  The close_lru
+	 * is a list of such openowners, to be reaped by the laundromat
+	 * thread eventually if they remain unused:
+	 */
+	struct list_head	oo_close_lru;
+	struct nfs4_ol_stateid *oo_last_closed_stid;
+	time_t			oo_time; /* time of placement on so_close_lru */
+#define NFS4_OO_CONFIRMED   1
+#define NFS4_OO_PURGE_CLOSE 2
+#define NFS4_OO_NEW         4
+	unsigned char		oo_flags;
+};
+
+struct nfs4_lockowner {
+	struct nfs4_stateowner	lo_owner; /* must be first element */
+	struct list_head        lo_perstateid; /* for lockowners only */
+	struct list_head	lo_list; /* for temporary uses */
+};
+
+static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so)
+{
+	return container_of(so, struct nfs4_openowner, oo_owner);
+}
+
+static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so)
+{
+	return container_of(so, struct nfs4_lockowner, lo_owner);
+}
+
 /*
 *  nfs4_file: a file opened by some number of (open) nfs4_stateowners.
 *    o fi_perfile list is used to search for conflicting 
@@ -368,17 +393,17 @@ struct nfs4_file {
 	/* One each for O_RDONLY, O_WRONLY, O_RDWR: */
 	struct file *		fi_fds[3];
 	/*
-	 * Each open or lock stateid contributes 1 to either
-	 * fi_access[O_RDONLY], fi_access[O_WRONLY], or both, depending
-	 * on open or lock mode:
+	 * Each open or lock stateid contributes 0-4 to the counts
+	 * below depending on which bits are set in st_access_bitmap:
+	 *     1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set
+	 *   + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set
+	 *   + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set.
 	 */
 	atomic_t		fi_access[2];
 	struct file		*fi_deleg_file;
 	struct file_lock	*fi_lease;
 	atomic_t		fi_delegees;
 	struct inode		*fi_inode;
-	u32                     fi_id;      /* used with stateowner->so_id 
-					     * for stateid_hashtbl hash */
 	bool			fi_had_conflict;
 };
 
@@ -408,50 +433,27 @@ static inline struct file *find_any_file(struct nfs4_file *f)
 		return f->fi_fds[O_RDONLY];
 }
 
-/*
-* nfs4_stateid can either be an open stateid or (eventually) a lock stateid
-*
-* (open)nfs4_stateid: one per (open)nfs4_stateowner, nfs4_file
-*
-* 	st_hash: stateid_hashtbl[] entry or lockstateid_hashtbl entry
-* 	st_perfile: file_hashtbl[] entry.
-* 	st_perfile_state: nfs4_stateowner->so_perfilestate
-*       st_perlockowner: (open stateid) list of lock nfs4_stateowners
-* 	st_access_bmap: used only for open stateid
-* 	st_deny_bmap: used only for open stateid
-*	st_openstp: open stateid lock stateid was derived from
-*
-* XXX: open stateids and lock stateids have diverged sufficiently that
-* we should consider defining separate structs for the two cases.
-*/
-
-struct nfs4_stateid {
-	struct list_head              st_hash; 
+/* "ol" stands for "Open or Lock".  Better suggestions welcome. */
+struct nfs4_ol_stateid {
+	struct nfs4_stid    st_stid; /* must be first field */
 	struct list_head              st_perfile;
 	struct list_head              st_perstateowner;
 	struct list_head              st_lockowners;
 	struct nfs4_stateowner      * st_stateowner;
 	struct nfs4_file            * st_file;
-	stateid_t                     st_stateid;
 	unsigned long                 st_access_bmap;
 	unsigned long                 st_deny_bmap;
-	struct nfs4_stateid         * st_openstp;
+	struct nfs4_ol_stateid         * st_openstp;
 };
 
+static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s)
+{
+	return container_of(s, struct nfs4_ol_stateid, st_stid);
+}
+
 /* flags for preprocess_seqid_op() */
-#define HAS_SESSION             0x00000001
-#define CONFIRM                 0x00000002
-#define OPEN_STATE              0x00000004
-#define LOCK_STATE              0x00000008
 #define RD_STATE	        0x00000010
 #define WR_STATE	        0x00000020
-#define CLOSE_STATE             0x00000040
-
-#define seqid_mutating_err(err)                       \
-	(((err) != nfserr_stale_clientid) &&    \
-	((err) != nfserr_bad_seqid) &&          \
-	((err) != nfserr_stale_stateid) &&      \
-	((err) != nfserr_bad_stateid))
 
 struct nfsd4_compound_state;
 
@@ -461,7 +463,8 @@ extern void nfs4_lock_state(void);
 extern void nfs4_unlock_state(void);
 extern int nfs4_in_grace(void);
 extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
-extern void nfs4_free_stateowner(struct kref *kref);
+extern void nfs4_free_openowner(struct nfs4_openowner *);
+extern void nfs4_free_lockowner(struct nfs4_lockowner *);
 extern int set_callback_cred(void);
 extern void nfsd4_probe_callback(struct nfs4_client *clp);
 extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);
@@ -473,7 +476,7 @@ extern void nfsd4_destroy_callback_queue(void);
 extern void nfsd4_shutdown_callback(struct nfs4_client *);
 extern void nfs4_put_delegation(struct nfs4_delegation *dp);
 extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname);
-extern void nfsd4_init_recdir(char *recdir_name);
+extern void nfsd4_init_recdir(void);
 extern int nfsd4_recdir_load(void);
 extern void nfsd4_shutdown_recdir(void);
 extern int nfs4_client_to_reclaim(const char *name);
@@ -482,18 +485,7 @@ extern void nfsd4_recdir_purge_old(void);
 extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
 extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
 extern void release_session_client(struct nfsd4_session *);
-extern __be32 nfs4_validate_stateid(stateid_t *, int);
-
-static inline void
-nfs4_put_stateowner(struct nfs4_stateowner *so)
-{
-	kref_put(&so->so_ref, nfs4_free_stateowner);
-}
-
-static inline void
-nfs4_get_stateowner(struct nfs4_stateowner *so)
-{
-	kref_get(&so->so_ref);
-}
+extern __be32 nfs4_validate_stateid(struct nfs4_client *, stateid_t *);
+extern void nfsd4_purge_closed_stateid(struct nfs4_stateowner *);
 
 #endif   /* NFSD4_STATE_H */
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index fd0acca5370a..7a2e442623c8 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -168,6 +168,8 @@ int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp)
 {
 	if (d_mountpoint(dentry))
 		return 1;
+	if (nfsd4_is_junction(dentry))
+		return 1;
 	if (!(exp->ex_flags & NFSEXP_V4ROOT))
 		return 0;
 	return dentry->d_inode != NULL;
@@ -502,7 +504,7 @@ nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	unsigned int flags = 0;
 
 	/* Get inode */
-	error = fh_verify(rqstp, fhp, 0 /* S_IFREG */, NFSD_MAY_SATTR);
+	error = fh_verify(rqstp, fhp, 0, NFSD_MAY_SATTR);
 	if (error)
 		return error;
 
@@ -592,6 +594,22 @@ nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, struct nfs4_ac
 	return error;
 }
 
+#define NFSD_XATTR_JUNCTION_PREFIX XATTR_TRUSTED_PREFIX "junction."
+#define NFSD_XATTR_JUNCTION_TYPE NFSD_XATTR_JUNCTION_PREFIX "type"
+int nfsd4_is_junction(struct dentry *dentry)
+{
+	struct inode *inode = dentry->d_inode;
+
+	if (inode == NULL)
+		return 0;
+	if (inode->i_mode & S_IXUGO)
+		return 0;
+	if (!(inode->i_mode & S_ISVTX))
+		return 0;
+	if (vfs_getxattr(dentry, NFSD_XATTR_JUNCTION_TYPE, NULL, 0) <= 0)
+		return 0;
+	return 1;
+}
 #endif /* defined(CONFIG_NFSD_V4) */
 
 #ifdef CONFIG_NFSD_V3
@@ -1352,7 +1370,7 @@ __be32
 do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
 		char *fname, int flen, struct iattr *iap,
 		struct svc_fh *resfhp, int createmode, u32 *verifier,
-	        int *truncp, int *created)
+	        bool *truncp, bool *created)
 {
 	struct dentry	*dentry, *dchild = NULL;
 	struct inode	*dirp;
@@ -1632,10 +1650,12 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
 	err = fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_CREATE);
 	if (err)
 		goto out;
-	err = fh_verify(rqstp, tfhp, -S_IFDIR, NFSD_MAY_NOP);
+	err = fh_verify(rqstp, tfhp, 0, NFSD_MAY_NOP);
 	if (err)
 		goto out;
-
+	err = nfserr_isdir;
+	if (S_ISDIR(tfhp->fh_dentry->d_inode->i_mode))
+		goto out;
 	err = nfserr_perm;
 	if (!len)
 		goto out;
@@ -2114,7 +2134,8 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
 
 	/* Allow read access to binaries even when mode 111 */
 	if (err == -EACCES && S_ISREG(inode->i_mode) &&
-	    acc == (NFSD_MAY_READ | NFSD_MAY_OWNER_OVERRIDE))
+	     (acc == (NFSD_MAY_READ | NFSD_MAY_OWNER_OVERRIDE) ||
+	      acc == (NFSD_MAY_READ | NFSD_MAY_READ_IF_EXEC)))
 		err = inode_permission(inode, MAY_EXEC);
 
 	return err? nfserrno(err) : 0;
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index e0bbac04d1dd..3f54ad03bb2b 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -10,21 +10,22 @@
 /*
  * Flags for nfsd_permission
  */
-#define NFSD_MAY_NOP		0
-#define NFSD_MAY_EXEC		1 /* == MAY_EXEC */
-#define NFSD_MAY_WRITE		2 /* == MAY_WRITE */
-#define NFSD_MAY_READ		4 /* == MAY_READ */
-#define NFSD_MAY_SATTR		8
-#define NFSD_MAY_TRUNC		16
-#define NFSD_MAY_LOCK		32
-#define NFSD_MAY_MASK		63
+#define NFSD_MAY_NOP			0
+#define NFSD_MAY_EXEC			0x001 /* == MAY_EXEC */
+#define NFSD_MAY_WRITE			0x002 /* == MAY_WRITE */
+#define NFSD_MAY_READ			0x004 /* == MAY_READ */
+#define NFSD_MAY_SATTR			0x008
+#define NFSD_MAY_TRUNC			0x010
+#define NFSD_MAY_LOCK			0x020
+#define NFSD_MAY_MASK			0x03f
 
 /* extra hints to permission and open routines: */
-#define NFSD_MAY_OWNER_OVERRIDE	64
-#define NFSD_MAY_LOCAL_ACCESS	128 /* IRIX doing local access check on device special file*/
-#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256
-#define NFSD_MAY_NOT_BREAK_LEASE 512
-#define NFSD_MAY_BYPASS_GSS	1024
+#define NFSD_MAY_OWNER_OVERRIDE		0x040
+#define NFSD_MAY_LOCAL_ACCESS		0x080 /* for device special files */
+#define NFSD_MAY_BYPASS_GSS_ON_ROOT	0x100
+#define NFSD_MAY_NOT_BREAK_LEASE	0x200
+#define NFSD_MAY_BYPASS_GSS		0x400
+#define NFSD_MAY_READ_IF_EXEC		0x800
 
 #define NFSD_MAY_CREATE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE)
 #define NFSD_MAY_REMOVE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
@@ -61,7 +62,7 @@ __be32		nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
 __be32		do_nfsd_create(struct svc_rqst *, struct svc_fh *,
 				char *name, int len, struct iattr *attrs,
 				struct svc_fh *res, int createmode,
-				u32 *verifier, int *truncp, int *created);
+				u32 *verifier, bool *truncp, bool *created);
 __be32		nfsd_commit(struct svc_rqst *, struct svc_fh *,
 				loff_t, unsigned long);
 #endif /* CONFIG_NFSD_V3 */
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index d2a8d04428c7..2364747ee97d 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -81,7 +81,6 @@ struct nfsd4_access {
 struct nfsd4_close {
 	u32		cl_seqid;           /* request */
 	stateid_t	cl_stateid;         /* request+response */
-	struct nfs4_stateowner * cl_stateowner;	/* response */
 };
 
 struct nfsd4_commit {
@@ -131,7 +130,7 @@ struct nfsd4_link {
 
 struct nfsd4_lock_denied {
 	clientid_t	ld_clientid;
-	struct nfs4_stateowner   *ld_sop;
+	struct xdr_netobj	ld_owner;
 	u64             ld_start;
 	u64             ld_length;
 	u32             ld_type;
@@ -165,9 +164,6 @@ struct nfsd4_lock {
 		} ok;
 		struct nfsd4_lock_denied        denied;
 	} u;
-	/* The lk_replay_owner is the open owner in the open_to_lock_owner
-	 * case and the lock owner otherwise: */
-	struct nfs4_stateowner *lk_replay_owner;
 };
 #define lk_new_open_seqid       v.new.open_seqid
 #define lk_new_open_stateid     v.new.open_stateid
@@ -188,7 +184,6 @@ struct nfsd4_lockt {
 	struct xdr_netobj		lt_owner;
 	u64				lt_offset;
 	u64				lt_length;
-	struct nfs4_stateowner * 	lt_stateowner;
 	struct nfsd4_lock_denied  	lt_denied;
 };
 
@@ -199,7 +194,6 @@ struct nfsd4_locku {
 	stateid_t       lu_stateid;
 	u64             lu_offset;
 	u64             lu_length;
-	struct nfs4_stateowner  *lu_stateowner;
 };
 
 
@@ -232,8 +226,11 @@ struct nfsd4_open {
 	u32		op_recall;          /* recall */
 	struct nfsd4_change_info  op_cinfo; /* response */
 	u32		op_rflags;          /* response */
-	int		op_truncate;        /* used during processing */
-	struct nfs4_stateowner *op_stateowner; /* used during processing */
+	bool		op_truncate;        /* used during processing */
+	bool		op_created;         /* used during processing */
+	struct nfs4_openowner *op_openowner; /* used during processing */
+	struct nfs4_file *op_file;          /* used during processing */
+	struct nfs4_ol_stateid *op_stp;	    /* used during processing */
 	struct nfs4_acl *op_acl;
 };
 #define op_iattr	iattr
@@ -243,7 +240,6 @@ struct nfsd4_open_confirm {
 	stateid_t	oc_req_stateid		/* request */;
 	u32		oc_seqid    		/* request */;
 	stateid_t	oc_resp_stateid		/* response */;
-	struct nfs4_stateowner * oc_stateowner;	/* response */
 };
 
 struct nfsd4_open_downgrade {
@@ -251,7 +247,6 @@ struct nfsd4_open_downgrade {
 	u32             od_seqid;
 	u32             od_share_access;
 	u32             od_share_deny;
-	struct nfs4_stateowner *od_stateowner;
 };
 
 
@@ -325,8 +320,7 @@ struct nfsd4_setattr {
 
 struct nfsd4_setclientid {
 	nfs4_verifier	se_verf;            /* request */
-	u32		se_namelen;         /* request */
-	char *		se_name;            /* request */
+	struct xdr_netobj se_name;
 	u32		se_callback_prog;   /* request */
 	u32		se_callback_netid_len;  /* request */
 	char *		se_callback_netid_val;  /* request */
@@ -351,7 +345,6 @@ struct nfsd4_saved_compoundargs {
 
 struct nfsd4_test_stateid {
 	__be32		ts_num_ids;
-	__be32		ts_has_session;
 	struct nfsd4_compoundargs *ts_saved_args;
 	struct nfsd4_saved_compoundargs ts_savedp;
 };
@@ -405,6 +398,10 @@ struct nfsd4_destroy_session {
 	struct nfs4_sessionid	sessionid;
 };
 
+struct nfsd4_destroy_clientid {
+	clientid_t clientid;
+};
+
 struct nfsd4_reclaim_complete {
 	u32 rca_one_fs;
 };
@@ -532,6 +529,7 @@ int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
 		struct nfsd4_compoundargs *);
 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
 		struct nfsd4_compoundres *);
+int nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
 void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
 __be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
@@ -558,11 +556,13 @@ extern __be32 nfsd4_sequence(struct svc_rqst *,
 extern __be32 nfsd4_destroy_session(struct svc_rqst *,
 		struct nfsd4_compound_state *,
 		struct nfsd4_destroy_session *);
+extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
 		struct nfsd4_open *open);
 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
 		struct svc_fh *current_fh, struct nfsd4_open *open);
+extern void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status);
 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
 		struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
 extern __be32 nfsd4_close(struct svc_rqst *rqstp,
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 81ecf9c0bf0a..194fb22ef79d 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -7185,20 +7185,9 @@ int ocfs2_init_security_and_acl(struct inode *dir,
 {
 	int ret = 0;
 	struct buffer_head *dir_bh = NULL;
-	struct ocfs2_security_xattr_info si = {
-		.enable = 1,
-	};
 
-	ret = ocfs2_init_security_get(inode, dir, qstr, &si);
+	ret = ocfs2_init_security_get(inode, dir, qstr, NULL);
 	if (!ret) {
-		ret = ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,
-				      si.name, si.value, si.value_len,
-				      XATTR_CREATE);
-		if (ret) {
-			mlog_errno(ret);
-			goto leave;
-		}
-	} else if (ret != -EOPNOTSUPP) {
 		mlog_errno(ret);
 		goto leave;
 	}
@@ -7255,6 +7244,22 @@ static int ocfs2_xattr_security_set(struct dentry *dentry, const char *name,
 			       name, value, size, flags);
 }
 
+int ocfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		     void *fs_info)
+{
+	const struct xattr *xattr;
+	int err = 0;
+
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		err = ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,
+				      xattr->name, xattr->value,
+				      xattr->value_len, XATTR_CREATE);
+		if (err)
+			break;
+	}
+	return err;
+}
+
 int ocfs2_init_security_get(struct inode *inode,
 			    struct inode *dir,
 			    const struct qstr *qstr,
@@ -7263,8 +7268,13 @@ int ocfs2_init_security_get(struct inode *inode,
 	/* check whether ocfs2 support feature xattr */
 	if (!ocfs2_supports_xattr(OCFS2_SB(dir->i_sb)))
 		return -EOPNOTSUPP;
-	return security_inode_init_security(inode, dir, qstr, &si->name,
-					    &si->value, &si->value_len);
+	if (si)
+		return security_old_inode_init_security(inode, dir, qstr,
+							&si->name, &si->value,
+							&si->value_len);
+
+	return security_inode_init_security(inode, dir, qstr,
+					    &ocfs2_initxattrs, NULL);
 }
 
 int ocfs2_init_security_set(handle_t *handle,
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 25b6a887adb9..5afaa58a8630 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -877,30 +877,54 @@ struct numa_maps_private {
 	struct numa_maps md;
 };
 
-static void gather_stats(struct page *page, struct numa_maps *md, int pte_dirty)
+static void gather_stats(struct page *page, struct numa_maps *md, int pte_dirty,
+			unsigned long nr_pages)
 {
 	int count = page_mapcount(page);
 
-	md->pages++;
+	md->pages += nr_pages;
 	if (pte_dirty || PageDirty(page))
-		md->dirty++;
+		md->dirty += nr_pages;
 
 	if (PageSwapCache(page))
-		md->swapcache++;
+		md->swapcache += nr_pages;
 
 	if (PageActive(page) || PageUnevictable(page))
-		md->active++;
+		md->active += nr_pages;
 
 	if (PageWriteback(page))
-		md->writeback++;
+		md->writeback += nr_pages;
 
 	if (PageAnon(page))
-		md->anon++;
+		md->anon += nr_pages;
 
 	if (count > md->mapcount_max)
 		md->mapcount_max = count;
 
-	md->node[page_to_nid(page)]++;
+	md->node[page_to_nid(page)] += nr_pages;
+}
+
+static struct page *can_gather_numa_stats(pte_t pte, struct vm_area_struct *vma,
+		unsigned long addr)
+{
+	struct page *page;
+	int nid;
+
+	if (!pte_present(pte))
+		return NULL;
+
+	page = vm_normal_page(vma, addr, pte);
+	if (!page)
+		return NULL;
+
+	if (PageReserved(page))
+		return NULL;
+
+	nid = page_to_nid(page);
+	if (!node_isset(nid, node_states[N_HIGH_MEMORY]))
+		return NULL;
+
+	return page;
 }
 
 static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
@@ -912,26 +936,32 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
 	pte_t *pte;
 
 	md = walk->private;
-	orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
-	do {
-		struct page *page;
-		int nid;
+	spin_lock(&walk->mm->page_table_lock);
+	if (pmd_trans_huge(*pmd)) {
+		if (pmd_trans_splitting(*pmd)) {
+			spin_unlock(&walk->mm->page_table_lock);
+			wait_split_huge_page(md->vma->anon_vma, pmd);
+		} else {
+			pte_t huge_pte = *(pte_t *)pmd;
+			struct page *page;
 
-		if (!pte_present(*pte))
-			continue;
+			page = can_gather_numa_stats(huge_pte, md->vma, addr);
+			if (page)
+				gather_stats(page, md, pte_dirty(huge_pte),
+						HPAGE_PMD_SIZE/PAGE_SIZE);
+			spin_unlock(&walk->mm->page_table_lock);
+			return 0;
+		}
+	} else {
+		spin_unlock(&walk->mm->page_table_lock);
+	}
 
-		page = vm_normal_page(md->vma, addr, *pte);
+	orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
+	do {
+		struct page *page = can_gather_numa_stats(*pte, md->vma, addr);
 		if (!page)
 			continue;
-
-		if (PageReserved(page))
-			continue;
-
-		nid = page_to_nid(page);
-		if (!node_isset(nid, node_states[N_HIGH_MEMORY]))
-			continue;
-
-		gather_stats(page, md, pte_dirty(*pte));
+		gather_stats(page, md, pte_dirty(*pte), 1);
 
 	} while (pte++, addr += PAGE_SIZE, addr != end);
 	pte_unmap_unlock(orig_pte, ptl);
@@ -952,7 +982,7 @@ static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask,
 		return 0;
 
 	md = walk->private;
-	gather_stats(page, md, pte_dirty(*pte));
+	gather_stats(page, md, pte_dirty(*pte), 1);
 	return 0;
 }
 
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index b34bdb25490c..10b6be3ca280 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -355,7 +355,7 @@ SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special,
 	 * resolution (think about autofs) and thus deadlocks could arise.
 	 */
 	if (cmds == Q_QUOTAON) {
-		ret = user_path_at(AT_FDCWD, addr, LOOKUP_FOLLOW, &path);
+		ret = user_path_at(AT_FDCWD, addr, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path);
 		if (ret)
 			pathp = ERR_PTR(ret);
 		else
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index a159ba5a35e7..eb711060a6f2 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -291,14 +291,13 @@ int reiserfs_allocate_list_bitmaps(struct super_block *sb,
 	for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) {
 		jb = jb_array + i;
 		jb->journal_list = NULL;
-		jb->bitmaps = vmalloc(mem);
+		jb->bitmaps = vzalloc(mem);
 		if (!jb->bitmaps) {
 			reiserfs_warning(sb, "clm-2000", "unable to "
 					 "allocate bitmaps for journal lists");
 			failed = 1;
 			break;
 		}
-		memset(jb->bitmaps, 0, mem);
 	}
 	if (failed) {
 		free_list_bitmaps(sb, jb_array);
@@ -353,11 +352,10 @@ static struct reiserfs_journal_cnode *allocate_cnodes(int num_cnodes)
 	if (num_cnodes <= 0) {
 		return NULL;
 	}
-	head = vmalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode));
+	head = vzalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode));
 	if (!head) {
 		return NULL;
 	}
-	memset(head, 0, num_cnodes * sizeof(struct reiserfs_journal_cnode));
 	head[0].prev = NULL;
 	head[0].next = head + 1;
 	for (i = 1; i < num_cnodes; i++) {
@@ -2685,14 +2683,13 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
 	 * dependency inversion warnings.
 	 */
 	reiserfs_write_unlock(sb);
-	journal = SB_JOURNAL(sb) = vmalloc(sizeof(struct reiserfs_journal));
+	journal = SB_JOURNAL(sb) = vzalloc(sizeof(struct reiserfs_journal));
 	if (!journal) {
 		reiserfs_warning(sb, "journal-1256",
 				 "unable to get memory for journal structure");
 		reiserfs_write_lock(sb);
 		return 1;
 	}
-	memset(journal, 0, sizeof(struct reiserfs_journal));
 	INIT_LIST_HEAD(&journal->j_bitmap_nodes);
 	INIT_LIST_HEAD(&journal->j_prealloc_list);
 	INIT_LIST_HEAD(&journal->j_working_list);
diff --git a/fs/reiserfs/resize.c b/fs/reiserfs/resize.c
index b6b9b1fe33b0..7483279b482d 100644
--- a/fs/reiserfs/resize.c
+++ b/fs/reiserfs/resize.c
@@ -111,15 +111,13 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new)
 		/* allocate additional bitmap blocks, reallocate array of bitmap
 		 * block pointers */
 		bitmap =
-		    vmalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new);
+		    vzalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new);
 		if (!bitmap) {
 			/* Journal bitmaps are still supersized, but the memory isn't
 			 * leaked, so I guess it's ok */
 			printk("reiserfs_resize: unable to allocate memory.\n");
 			return -ENOMEM;
 		}
-		memset(bitmap, 0,
-		       sizeof(struct reiserfs_bitmap_info) * bmap_nr_new);
 		for (i = 0; i < bmap_nr; i++)
 			bitmap[i] = old_bitmap[i];
 
diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c
index ef66c18a9332..534668fa41be 100644
--- a/fs/reiserfs/xattr_security.c
+++ b/fs/reiserfs/xattr_security.c
@@ -66,8 +66,8 @@ int reiserfs_security_init(struct inode *dir, struct inode *inode,
 	if (IS_PRIVATE(dir))
 		return 0;
 
-	error = security_inode_init_security(inode, dir, qstr, &sec->name,
-					     &sec->value, &sec->length);
+	error = security_old_inode_init_security(inode, dir, qstr, &sec->name,
+						 &sec->value, &sec->length);
 	if (error) {
 		if (error == -EOPNOTSUPP)
 			error = 0;
diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig
index 1360d4f88f41..048b59d5b2f0 100644
--- a/fs/squashfs/Kconfig
+++ b/fs/squashfs/Kconfig
@@ -19,9 +19,9 @@ config SQUASHFS
 
 	  If you want to compile this as a module ( = code which can be
 	  inserted in and removed from the running kernel whenever you want),
-	  say M here and read <file:Documentation/modules.txt>.  The module
-	  will be called squashfs.  Note that the root file system (the one
-	  containing the directory /) cannot be compiled as a module.
+	  say M here.  The module will be called squashfs.  Note that the root
+	  file system (the one containing the directory /) cannot be compiled
+	  as a module.
 
 	  If unsure, say N.
 
diff --git a/fs/stat.c b/fs/stat.c
index ba5316ffac61..78a3aa83c7ea 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -81,8 +81,6 @@ int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat,
 
 	if (!(flag & AT_SYMLINK_NOFOLLOW))
 		lookup_flags |= LOOKUP_FOLLOW;
-	if (flag & AT_NO_AUTOMOUNT)
-		lookup_flags |= LOOKUP_NO_AUTOMOUNT;
 	if (flag & AT_EMPTY_PATH)
 		lookup_flags |= LOOKUP_EMPTY;
 
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index ea9120a830d8..48ffbdf0d017 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -43,20 +43,48 @@ static DEFINE_IDA(sysfs_ino_ida);
 static void sysfs_link_sibling(struct sysfs_dirent *sd)
 {
 	struct sysfs_dirent *parent_sd = sd->s_parent;
-	struct sysfs_dirent **pos;
 
-	BUG_ON(sd->s_sibling);
-
-	/* Store directory entries in order by ino.  This allows
-	 * readdir to properly restart without having to add a
-	 * cursor into the s_dir.children list.
-	 */
-	for (pos = &parent_sd->s_dir.children; *pos; pos = &(*pos)->s_sibling) {
-		if (sd->s_ino < (*pos)->s_ino)
-			break;
+	struct rb_node **p;
+	struct rb_node *parent;
+
+	if (sysfs_type(sd) == SYSFS_DIR)
+		parent_sd->s_dir.subdirs++;
+
+	p = &parent_sd->s_dir.inode_tree.rb_node;
+	parent = NULL;
+	while (*p) {
+		parent = *p;
+#define node	rb_entry(parent, struct sysfs_dirent, inode_node)
+		if (sd->s_ino < node->s_ino) {
+			p = &node->inode_node.rb_left;
+		} else if (sd->s_ino > node->s_ino) {
+			p = &node->inode_node.rb_right;
+		} else {
+			printk(KERN_CRIT "sysfs: inserting duplicate inode '%lx'\n",
+			       (unsigned long) sd->s_ino);
+			BUG();
+		}
+#undef node
 	}
-	sd->s_sibling = *pos;
-	*pos = sd;
+	rb_link_node(&sd->inode_node, parent, p);
+	rb_insert_color(&sd->inode_node, &parent_sd->s_dir.inode_tree);
+
+	p = &parent_sd->s_dir.name_tree.rb_node;
+	parent = NULL;
+	while (*p) {
+		int c;
+		parent = *p;
+#define node	rb_entry(parent, struct sysfs_dirent, name_node)
+		c = strcmp(sd->s_name, node->s_name);
+		if (c < 0) {
+			p = &node->name_node.rb_left;
+		} else {
+			p = &node->name_node.rb_right;
+		}
+#undef node
+	}
+	rb_link_node(&sd->name_node, parent, p);
+	rb_insert_color(&sd->name_node, &parent_sd->s_dir.name_tree);
 }
 
 /**
@@ -71,16 +99,11 @@ static void sysfs_link_sibling(struct sysfs_dirent *sd)
  */
 static void sysfs_unlink_sibling(struct sysfs_dirent *sd)
 {
-	struct sysfs_dirent **pos;
+	if (sysfs_type(sd) == SYSFS_DIR)
+		sd->s_parent->s_dir.subdirs--;
 
-	for (pos = &sd->s_parent->s_dir.children; *pos;
-	     pos = &(*pos)->s_sibling) {
-		if (*pos == sd) {
-			*pos = sd->s_sibling;
-			sd->s_sibling = NULL;
-			break;
-		}
-	}
+	rb_erase(&sd->inode_node, &sd->s_parent->s_dir.inode_tree);
+	rb_erase(&sd->name_node, &sd->s_parent->s_dir.name_tree);
 }
 
 /**
@@ -126,7 +149,6 @@ struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd)
  */
 void sysfs_put_active(struct sysfs_dirent *sd)
 {
-	struct completion *cmpl;
 	int v;
 
 	if (unlikely(!sd))
@@ -138,10 +160,9 @@ void sysfs_put_active(struct sysfs_dirent *sd)
 		return;
 
 	/* atomic_dec_return() is a mb(), we'll always see the updated
-	 * sd->s_sibling.
+	 * sd->u.completion.
 	 */
-	cmpl = (void *)sd->s_sibling;
-	complete(cmpl);
+	complete(sd->u.completion);
 }
 
 /**
@@ -155,16 +176,16 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
 	DECLARE_COMPLETION_ONSTACK(wait);
 	int v;
 
-	BUG_ON(sd->s_sibling || !(sd->s_flags & SYSFS_FLAG_REMOVED));
+	BUG_ON(!(sd->s_flags & SYSFS_FLAG_REMOVED));
 
 	if (!(sysfs_type(sd) & SYSFS_ACTIVE_REF))
 		return;
 
-	sd->s_sibling = (void *)&wait;
+	sd->u.completion = (void *)&wait;
 
 	rwsem_acquire(&sd->dep_map, 0, 0, _RET_IP_);
 	/* atomic_add_return() is a mb(), put_active() will always see
-	 * the updated sd->s_sibling.
+	 * the updated sd->u.completion.
 	 */
 	v = atomic_add_return(SD_DEACTIVATED_BIAS, &sd->s_active);
 
@@ -173,8 +194,6 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
 		wait_for_completion(&wait);
 	}
 
-	sd->s_sibling = NULL;
-
 	lock_acquired(&sd->dep_map, _RET_IP_);
 	rwsem_release(&sd->dep_map, 1, _RET_IP_);
 }
@@ -384,6 +403,13 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 {
 	struct sysfs_inode_attrs *ps_iattr;
 
+	if (!!sysfs_ns_type(acxt->parent_sd) != !!sd->s_ns) {
+		WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
+			sysfs_ns_type(acxt->parent_sd)? "required": "invalid",
+			acxt->parent_sd->s_name, sd->s_name);
+		return -EINVAL;
+	}
+
 	if (sysfs_find_dirent(acxt->parent_sd, sd->s_ns, sd->s_name))
 		return -EEXIST;
 
@@ -490,7 +516,7 @@ void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 	}
 
 	sd->s_flags |= SYSFS_FLAG_REMOVED;
-	sd->s_sibling = acxt->removed;
+	sd->u.removed_list = acxt->removed;
 	acxt->removed = sd;
 }
 
@@ -514,8 +540,7 @@ void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt)
 	while (acxt->removed) {
 		struct sysfs_dirent *sd = acxt->removed;
 
-		acxt->removed = sd->s_sibling;
-		sd->s_sibling = NULL;
+		acxt->removed = sd->u.removed_list;
 
 		sysfs_deactivate(sd);
 		unmap_bin_file(sd);
@@ -540,15 +565,43 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
 				       const void *ns,
 				       const unsigned char *name)
 {
-	struct sysfs_dirent *sd;
+	struct rb_node *p = parent_sd->s_dir.name_tree.rb_node;
+	struct sysfs_dirent *found = NULL;
 
-	for (sd = parent_sd->s_dir.children; sd; sd = sd->s_sibling) {
-		if (ns && sd->s_ns && (sd->s_ns != ns))
-			continue;
-		if (!strcmp(sd->s_name, name))
-			return sd;
+	if (!!sysfs_ns_type(parent_sd) != !!ns) {
+		WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
+			sysfs_ns_type(parent_sd)? "required": "invalid",
+			parent_sd->s_name, name);
+		return NULL;
 	}
-	return NULL;
+
+	while (p) {
+		int c;
+#define node	rb_entry(p, struct sysfs_dirent, name_node)
+		c = strcmp(name, node->s_name);
+		if (c < 0) {
+			p = node->name_node.rb_left;
+		} else if (c > 0) {
+			p = node->name_node.rb_right;
+		} else {
+			found = node;
+			p = node->name_node.rb_left;
+		}
+#undef node
+	}
+
+	if (found) {
+		while (found->s_ns != ns) {
+			p = rb_next(&found->name_node);
+			if (!p)
+				return NULL;
+			found = rb_entry(p, struct sysfs_dirent, name_node);
+			if (strcmp(name, found->s_name))
+				return NULL;
+		}
+	}
+
+	return found;
 }
 
 /**
@@ -744,21 +797,19 @@ void sysfs_remove_subdir(struct sysfs_dirent *sd)
 static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd)
 {
 	struct sysfs_addrm_cxt acxt;
-	struct sysfs_dirent **pos;
+	struct rb_node *pos;
 
 	if (!dir_sd)
 		return;
 
 	pr_debug("sysfs %s: removing dir\n", dir_sd->s_name);
 	sysfs_addrm_start(&acxt, dir_sd);
-	pos = &dir_sd->s_dir.children;
-	while (*pos) {
-		struct sysfs_dirent *sd = *pos;
-
+	pos = rb_first(&dir_sd->s_dir.inode_tree);
+	while (pos) {
+		struct sysfs_dirent *sd = rb_entry(pos, struct sysfs_dirent, inode_node);
+		pos = rb_next(pos);
 		if (sysfs_type(sd) != SYSFS_DIR)
 			sysfs_remove_one(&acxt, sd);
-		else
-			pos = &(*pos)->s_sibling;
 	}
 	sysfs_addrm_finish(&acxt);
 
@@ -881,12 +932,28 @@ static struct sysfs_dirent *sysfs_dir_pos(const void *ns,
 			pos = NULL;
 	}
 	if (!pos && (ino > 1) && (ino < INT_MAX)) {
-		pos = parent_sd->s_dir.children;
-		while (pos && (ino > pos->s_ino))
-			pos = pos->s_sibling;
+		struct rb_node *p = parent_sd->s_dir.inode_tree.rb_node;
+		while (p) {
+#define node	rb_entry(p, struct sysfs_dirent, inode_node)
+			if (ino < node->s_ino) {
+				pos = node;
+				p = node->inode_node.rb_left;
+			} else if (ino > node->s_ino) {
+				p = node->inode_node.rb_right;
+			} else {
+				pos = node;
+				break;
+			}
+#undef node
+		}
+	}
+	while (pos && pos->s_ns != ns) {
+		struct rb_node *p = rb_next(&pos->inode_node);
+		if (!p)
+			pos = NULL;
+		else
+			pos = rb_entry(p, struct sysfs_dirent, inode_node);
 	}
-	while (pos && pos->s_ns && pos->s_ns != ns)
-		pos = pos->s_sibling;
 	return pos;
 }
 
@@ -894,10 +961,13 @@ static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns,
 	struct sysfs_dirent *parent_sd,	ino_t ino, struct sysfs_dirent *pos)
 {
 	pos = sysfs_dir_pos(ns, parent_sd, ino, pos);
-	if (pos)
-		pos = pos->s_sibling;
-	while (pos && pos->s_ns && pos->s_ns != ns)
-		pos = pos->s_sibling;
+	if (pos) do {
+		struct rb_node *p = rb_next(&pos->inode_node);
+		if (!p)
+			pos = NULL;
+		else
+			pos = rb_entry(p, struct sysfs_dirent, inode_node);
+	} while (pos && pos->s_ns != ns);
 	return pos;
 }
 
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 1ad8c93c1b85..d4e6080b4b20 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -466,9 +466,6 @@ void sysfs_notify(struct kobject *k, const char *dir, const char *attr)
 	mutex_lock(&sysfs_mutex);
 
 	if (sd && dir)
-		/* Only directories are tagged, so no need to pass
-		 * a tag explicitly.
-		 */
 		sd = sysfs_find_dirent(sd, NULL, dir);
 	if (sd && attr)
 		sd = sysfs_find_dirent(sd, NULL, attr);
@@ -488,17 +485,56 @@ const struct file_operations sysfs_file_operations = {
 	.poll		= sysfs_poll,
 };
 
+int sysfs_attr_ns(struct kobject *kobj, const struct attribute *attr,
+		  const void **pns)
+{
+	struct sysfs_dirent *dir_sd = kobj->sd;
+	const struct sysfs_ops *ops;
+	const void *ns = NULL;
+	int err;
+
+	err = 0;
+	if (!sysfs_ns_type(dir_sd))
+		goto out;
+
+	err = -EINVAL;
+	if (!kobj->ktype)
+		goto out;
+	ops = kobj->ktype->sysfs_ops;
+	if (!ops)
+		goto out;
+	if (!ops->namespace)
+		goto out;
+
+	err = 0;
+	ns = ops->namespace(kobj, attr);
+out:
+	if (err) {
+		WARN(1, KERN_ERR "missing sysfs namespace attribute operation for "
+		     "kobject: %s\n", kobject_name(kobj));
+	}
+	*pns = ns;
+	return err;
+}
+
 int sysfs_add_file_mode(struct sysfs_dirent *dir_sd,
 			const struct attribute *attr, int type, mode_t amode)
 {
 	umode_t mode = (amode & S_IALLUGO) | S_IFREG;
 	struct sysfs_addrm_cxt acxt;
 	struct sysfs_dirent *sd;
+	const void *ns;
 	int rc;
 
+	rc = sysfs_attr_ns(dir_sd->s_dir.kobj, attr, &ns);
+	if (rc)
+		return rc;
+
 	sd = sysfs_new_dirent(attr->name, mode, type);
 	if (!sd)
 		return -ENOMEM;
+
+	sd->s_ns = ns;
 	sd->s_attr.attr = (void *)attr;
 	sysfs_dirent_init_lockdep(sd);
 
@@ -586,12 +622,17 @@ int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr,
 {
 	struct sysfs_dirent *sd;
 	struct iattr newattrs;
+	const void *ns;
 	int rc;
 
+	rc = sysfs_attr_ns(kobj, attr, &ns);
+	if (rc)
+		return rc;
+
 	mutex_lock(&sysfs_mutex);
 
 	rc = -ENOENT;
-	sd = sysfs_find_dirent(kobj->sd, NULL, attr->name);
+	sd = sysfs_find_dirent(kobj->sd, ns, attr->name);
 	if (!sd)
 		goto out;
 
@@ -616,7 +657,12 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file);
 
 void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
 {
-	sysfs_hash_and_remove(kobj->sd, NULL, attr->name);
+	const void *ns;
+
+	if (sysfs_attr_ns(kobj, attr, &ns))
+		return;
+
+	sysfs_hash_and_remove(kobj->sd, ns, attr->name);
 }
 
 void sysfs_remove_files(struct kobject * kobj, const struct attribute **ptr)
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index e3f091a81c72..e23f28894a3a 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -202,18 +202,6 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr)
 	inode->i_ctime = iattr->ia_ctime;
 }
 
-static int sysfs_count_nlink(struct sysfs_dirent *sd)
-{
-	struct sysfs_dirent *child;
-	int nr = 0;
-
-	for (child = sd->s_dir.children; child; child = child->s_sibling)
-		if (sysfs_type(child) == SYSFS_DIR)
-			nr++;
-
-	return nr + 2;
-}
-
 static void sysfs_refresh_inode(struct sysfs_dirent *sd, struct inode *inode)
 {
 	struct sysfs_inode_attrs *iattrs = sd->s_iattr;
@@ -230,7 +218,7 @@ static void sysfs_refresh_inode(struct sysfs_dirent *sd, struct inode *inode)
 	}
 
 	if (sysfs_type(sd) == SYSFS_DIR)
-		inode->i_nlink = sysfs_count_nlink(sd);
+		inode->i_nlink = sd->s_dir.subdirs + 2;
 }
 
 int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
@@ -336,8 +324,6 @@ int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const void *ns, const cha
 	sysfs_addrm_start(&acxt, dir_sd);
 
 	sd = sysfs_find_dirent(dir_sd, ns, name);
-	if (sd && (sd->s_ns != ns))
-		sd = NULL;
 	if (sd)
 		sysfs_remove_one(&acxt, sd);
 
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 845ab3ad229d..ce29e28b766d 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -11,14 +11,18 @@
 #include <linux/lockdep.h>
 #include <linux/kobject_ns.h>
 #include <linux/fs.h>
+#include <linux/rbtree.h>
 
 struct sysfs_open_dirent;
 
 /* type-specific structures for sysfs_dirent->s_* union members */
 struct sysfs_elem_dir {
 	struct kobject		*kobj;
-	/* children list starts here and goes through sd->s_sibling */
-	struct sysfs_dirent	*children;
+
+	unsigned long		subdirs;
+
+	struct rb_root		inode_tree;
+	struct rb_root		name_tree;
 };
 
 struct sysfs_elem_symlink {
@@ -56,9 +60,16 @@ struct sysfs_dirent {
 	struct lockdep_map	dep_map;
 #endif
 	struct sysfs_dirent	*s_parent;
-	struct sysfs_dirent	*s_sibling;
 	const char		*s_name;
 
+	struct rb_node		inode_node;
+	struct rb_node		name_node;
+
+	union {
+		struct completion	*completion;
+		struct sysfs_dirent	*removed_list;
+	} u;
+
 	const void		*s_ns; /* namespace tag */
 	union {
 		struct sysfs_elem_dir		s_dir;
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index 45174b534377..feb361e252ac 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -335,9 +335,9 @@ void dbg_debugfs_exit_fs(struct ubifs_info *c);
 #define DBGKEY(key)  ((char *)(key))
 #define DBGKEY1(key) ((char *)(key))
 
-#define ubifs_dbg_msg(fmt, ...) do {               \
-	if (0)                                     \
-		pr_debug(fmt "\n", ##__VA_ARGS__); \
+#define ubifs_dbg_msg(fmt, ...) do {                        \
+	if (0)                                              \
+		printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__); \
 } while (0)
 
 #define dbg_dump_stack()
diff --git a/fs/xattr.c b/fs/xattr.c
index f060663ab70c..67583de8218c 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -14,6 +14,7 @@
 #include <linux/mount.h>
 #include <linux/namei.h>
 #include <linux/security.h>
+#include <linux/evm.h>
 #include <linux/syscalls.h>
 #include <linux/module.h>
 #include <linux/fsnotify.h>
@@ -166,6 +167,64 @@ out_noalloc:
 }
 EXPORT_SYMBOL_GPL(xattr_getsecurity);
 
+/*
+ * vfs_getxattr_alloc - allocate memory, if necessary, before calling getxattr
+ *
+ * Allocate memory, if not already allocated, or re-allocate correct size,
+ * before retrieving the extended attribute.
+ *
+ * Returns the result of alloc, if failed, or the getxattr operation.
+ */
+ssize_t
+vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
+		   size_t xattr_size, gfp_t flags)
+{
+	struct inode *inode = dentry->d_inode;
+	char *value = *xattr_value;
+	int error;
+
+	error = xattr_permission(inode, name, MAY_READ);
+	if (error)
+		return error;
+
+	if (!inode->i_op->getxattr)
+		return -EOPNOTSUPP;
+
+	error = inode->i_op->getxattr(dentry, name, NULL, 0);
+	if (error < 0)
+		return error;
+
+	if (!value || (error > xattr_size)) {
+		value = krealloc(*xattr_value, error + 1, flags);
+		if (!value)
+			return -ENOMEM;
+		memset(value, 0, error + 1);
+	}
+
+	error = inode->i_op->getxattr(dentry, name, value, error);
+	*xattr_value = value;
+	return error;
+}
+
+/* Compare an extended attribute value with the given value */
+int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
+		  const char *value, size_t size, gfp_t flags)
+{
+	char *xattr_value = NULL;
+	int rc;
+
+	rc = vfs_getxattr_alloc(dentry, xattr_name, &xattr_value, 0, flags);
+	if (rc < 0)
+		return rc;
+
+	if ((rc != size) || (memcmp(xattr_value, value, rc) != 0))
+		rc = -EINVAL;
+	else
+		rc = 0;
+	kfree(xattr_value);
+	return rc;
+}
+
 ssize_t
 vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
 {
@@ -243,8 +302,10 @@ vfs_removexattr(struct dentry *dentry, const char *name)
 	error = inode->i_op->removexattr(dentry, name);
 	mutex_unlock(&inode->i_mutex);
 
-	if (!error)
+	if (!error) {
 		fsnotify_xattr(dentry);
+		evm_inode_post_removexattr(dentry, name);
+	}
 	return error;
 }
 EXPORT_SYMBOL_GPL(vfs_removexattr);
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index 75bb316529dd..427a4e82a588 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -16,44 +16,53 @@
 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #
 
-ccflags-y := -I$(src) -I$(src)/linux-2.6
-ccflags-$(CONFIG_XFS_DEBUG) += -g
+ccflags-y += -I$(src)			# needed for trace events
 
-XFS_LINUX := linux-2.6
+ccflags-$(CONFIG_XFS_DEBUG) += -g
 
 obj-$(CONFIG_XFS_FS)		+= xfs.o
 
-xfs-y				+= linux-2.6/xfs_trace.o
-
-xfs-$(CONFIG_XFS_QUOTA)		+= $(addprefix quota/, \
-				   xfs_dquot.o \
-				   xfs_dquot_item.o \
-				   xfs_trans_dquot.o \
-				   xfs_qm_syscalls.o \
-				   xfs_qm_bhv.o \
-				   xfs_qm.o)
-xfs-$(CONFIG_XFS_QUOTA)		+= linux-2.6/xfs_quotaops.o
-
-ifeq ($(CONFIG_XFS_QUOTA),y)
-xfs-$(CONFIG_PROC_FS)		+= quota/xfs_qm_stats.o
-endif
-
-xfs-$(CONFIG_XFS_RT)		+= xfs_rtalloc.o
-xfs-$(CONFIG_XFS_POSIX_ACL)	+= $(XFS_LINUX)/xfs_acl.o
-xfs-$(CONFIG_PROC_FS)		+= $(XFS_LINUX)/xfs_stats.o
-xfs-$(CONFIG_SYSCTL)		+= $(XFS_LINUX)/xfs_sysctl.o
-xfs-$(CONFIG_COMPAT)		+= $(XFS_LINUX)/xfs_ioctl32.o
+# this one should be compiled first, as the tracing macros can easily blow up
+xfs-y				+= xfs_trace.o
 
+# highlevel code
+xfs-y				+= xfs_aops.o \
+				   xfs_bit.o \
+				   xfs_buf.o \
+				   xfs_dfrag.o \
+				   xfs_discard.o \
+				   xfs_error.o \
+				   xfs_export.o \
+				   xfs_file.o \
+				   xfs_filestream.o \
+				   xfs_fsops.o \
+				   xfs_fs_subr.o \
+				   xfs_globals.o \
+				   xfs_iget.o \
+				   xfs_ioctl.o \
+				   xfs_iomap.o \
+				   xfs_iops.o \
+				   xfs_itable.o \
+				   xfs_message.o \
+				   xfs_mru_cache.o \
+				   xfs_super.o \
+				   xfs_sync.o \
+				   xfs_xattr.o \
+				   xfs_rename.o \
+				   xfs_rw.o \
+				   xfs_utils.o \
+				   xfs_vnodeops.o \
+				   kmem.o \
+				   uuid.o
 
+# code shared with libxfs
 xfs-y				+= xfs_alloc.o \
 				   xfs_alloc_btree.o \
 				   xfs_attr.o \
 				   xfs_attr_leaf.o \
-				   xfs_bit.o \
 				   xfs_bmap.o \
 				   xfs_bmap_btree.o \
 				   xfs_btree.o \
-				   xfs_buf_item.o \
 				   xfs_da_btree.o \
 				   xfs_dir2.o \
 				   xfs_dir2_block.o \
@@ -61,49 +70,37 @@ xfs-y				+= xfs_alloc.o \
 				   xfs_dir2_leaf.o \
 				   xfs_dir2_node.o \
 				   xfs_dir2_sf.o \
-				   xfs_error.o \
-				   xfs_extfree_item.o \
-				   xfs_filestream.o \
-				   xfs_fsops.o \
 				   xfs_ialloc.o \
 				   xfs_ialloc_btree.o \
-				   xfs_iget.o \
 				   xfs_inode.o \
-				   xfs_inode_item.o \
-				   xfs_iomap.o \
-				   xfs_itable.o \
-				   xfs_dfrag.o \
-				   xfs_log.o \
-				   xfs_log_cil.o \
 				   xfs_log_recover.o \
 				   xfs_mount.o \
-				   xfs_mru_cache.o \
-				   xfs_rename.o \
-				   xfs_trans.o \
+				   xfs_trans.o
+
+# low-level transaction/log code
+xfs-y				+= xfs_log.o \
+				   xfs_log_cil.o \
+				   xfs_buf_item.o \
+				   xfs_extfree_item.o \
+				   xfs_inode_item.o \
 				   xfs_trans_ail.o \
 				   xfs_trans_buf.o \
 				   xfs_trans_extfree.o \
 				   xfs_trans_inode.o \
-				   xfs_utils.o \
-				   xfs_vnodeops.o \
-				   xfs_rw.o
-
-# Objects in linux/
-xfs-y				+= $(addprefix $(XFS_LINUX)/, \
-				   kmem.o \
-				   xfs_aops.o \
-				   xfs_buf.o \
-				   xfs_discard.o \
-				   xfs_export.o \
-				   xfs_file.o \
-				   xfs_fs_subr.o \
-				   xfs_globals.o \
-				   xfs_ioctl.o \
-				   xfs_iops.o \
-				   xfs_message.o \
-				   xfs_super.o \
-				   xfs_sync.o \
-				   xfs_xattr.o)
 
-# Objects in support/
-xfs-y				+= support/uuid.o
+# optional features
+xfs-$(CONFIG_XFS_QUOTA)		+= xfs_dquot.o \
+				   xfs_dquot_item.o \
+				   xfs_trans_dquot.o \
+				   xfs_qm_syscalls.o \
+				   xfs_qm_bhv.o \
+				   xfs_qm.o \
+				   xfs_quotaops.o
+ifeq ($(CONFIG_XFS_QUOTA),y)
+xfs-$(CONFIG_PROC_FS)		+= xfs_qm_stats.o
+endif
+xfs-$(CONFIG_XFS_RT)		+= xfs_rtalloc.o
+xfs-$(CONFIG_XFS_POSIX_ACL)	+= xfs_acl.o
+xfs-$(CONFIG_PROC_FS)		+= xfs_stats.o
+xfs-$(CONFIG_SYSCTL)		+= xfs_sysctl.o
+xfs-$(CONFIG_COMPAT)		+= xfs_ioctl32.o
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/kmem.c
index a907de565db3..a907de565db3 100644
--- a/fs/xfs/linux-2.6/kmem.c
+++ b/fs/xfs/kmem.c
diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/kmem.h
index f7c8f7a9ea6d..292eff198030 100644
--- a/fs/xfs/linux-2.6/kmem.h
+++ b/fs/xfs/kmem.h
@@ -61,12 +61,7 @@ extern void  kmem_free(const void *);
 
 static inline void *kmem_zalloc_large(size_t size)
 {
-	void *ptr;
-
-	ptr = vmalloc(size);
-	if (ptr)
-		memset(ptr, 0, size);
-	return ptr;
+	return vzalloc(size);
 }
 static inline void kmem_free_large(void *ptr)
 {
diff --git a/fs/xfs/linux-2.6/mrlock.h b/fs/xfs/mrlock.h
index ff6a19873e5c..ff6a19873e5c 100644
--- a/fs/xfs/linux-2.6/mrlock.h
+++ b/fs/xfs/mrlock.h
diff --git a/fs/xfs/linux-2.6/time.h b/fs/xfs/time.h
index 387e695a184c..387e695a184c 100644
--- a/fs/xfs/linux-2.6/time.h
+++ b/fs/xfs/time.h
diff --git a/fs/xfs/support/uuid.c b/fs/xfs/uuid.c
index b83f76b6d410..b83f76b6d410 100644
--- a/fs/xfs/support/uuid.c
+++ b/fs/xfs/uuid.c
diff --git a/fs/xfs/support/uuid.h b/fs/xfs/uuid.h
index 4732d71262cc..4732d71262cc 100644
--- a/fs/xfs/support/uuid.h
+++ b/fs/xfs/uuid.h
diff --git a/fs/xfs/xfs.h b/fs/xfs/xfs.h
index 53ec3ea9a625..d8b11b7f94aa 100644
--- a/fs/xfs/xfs.h
+++ b/fs/xfs/xfs.h
@@ -24,5 +24,6 @@
 #define XFS_BUF_LOCK_TRACKING 1
 #endif
 
-#include <linux-2.6/xfs_linux.h>
+#include "xfs_linux.h"
+
 #endif	/* __XFS_H__ */
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/xfs_acl.c
index b6c4b3795c4a..b6c4b3795c4a 100644
--- a/fs/xfs/linux-2.6/xfs_acl.c
+++ b/fs/xfs/xfs_acl.c
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 6530769a999b..4805f009f923 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -103,7 +103,7 @@ typedef struct xfs_agf {
 /* disk block (xfs_daddr_t) in the AG */
 #define XFS_AGF_DADDR(mp)	((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
 #define	XFS_AGF_BLOCK(mp)	XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
-#define	XFS_BUF_TO_AGF(bp)	((xfs_agf_t *)XFS_BUF_PTR(bp))
+#define	XFS_BUF_TO_AGF(bp)	((xfs_agf_t *)((bp)->b_addr))
 
 extern int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
 			xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
@@ -156,7 +156,7 @@ typedef struct xfs_agi {
 /* disk block (xfs_daddr_t) in the AG */
 #define XFS_AGI_DADDR(mp)	((xfs_daddr_t)(2 << (mp)->m_sectbb_log))
 #define	XFS_AGI_BLOCK(mp)	XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp))
-#define	XFS_BUF_TO_AGI(bp)	((xfs_agi_t *)XFS_BUF_PTR(bp))
+#define	XFS_BUF_TO_AGI(bp)	((xfs_agi_t *)((bp)->b_addr))
 
 extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
 				xfs_agnumber_t agno, struct xfs_buf **bpp);
@@ -168,7 +168,7 @@ extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
 #define XFS_AGFL_DADDR(mp)	((xfs_daddr_t)(3 << (mp)->m_sectbb_log))
 #define	XFS_AGFL_BLOCK(mp)	XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp))
 #define XFS_AGFL_SIZE(mp)	((mp)->m_sb.sb_sectsize / sizeof(xfs_agblock_t))
-#define	XFS_BUF_TO_AGFL(bp)	((xfs_agfl_t *)XFS_BUF_PTR(bp))
+#define	XFS_BUF_TO_AGFL(bp)	((xfs_agfl_t *)((bp)->b_addr))
 
 typedef struct xfs_agfl {
 	__be32		agfl_bno[1];	/* actually XFS_AGFL_SIZE(mp) */
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 1e00b3ef6274..bdd9cb54d63b 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -451,8 +451,7 @@ xfs_alloc_read_agfl(
 			XFS_FSS_TO_BB(mp, 1), 0, &bp);
 	if (error)
 		return error;
-	ASSERT(bp);
-	ASSERT(!XFS_BUF_GETERROR(bp));
+	ASSERT(!xfs_buf_geterror(bp));
 	XFS_BUF_SET_VTYPE_REF(bp, B_FS_AGFL, XFS_AGFL_REF);
 	*bpp = bp;
 	return 0;
@@ -2116,7 +2115,7 @@ xfs_read_agf(
 	if (!*bpp)
 		return 0;
 
-	ASSERT(!XFS_BUF_GETERROR(*bpp));
+	ASSERT(!(*bpp)->b_error);
 	agf = XFS_BUF_TO_AGF(*bpp);
 
 	/*
@@ -2168,7 +2167,7 @@ xfs_alloc_read_agf(
 		return error;
 	if (!*bpp)
 		return 0;
-	ASSERT(!XFS_BUF_GETERROR(*bpp));
+	ASSERT(!(*bpp)->b_error);
 
 	agf = XFS_BUF_TO_AGF(*bpp);
 	pag = xfs_perag_get(mp, agno);
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/xfs_aops.c
index 63e971e2b837..8c37dde4c521 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1300,6 +1300,7 @@ xfs_end_io_direct_write(
 	bool			is_async)
 {
 	struct xfs_ioend	*ioend = iocb->private;
+	struct inode		*inode = ioend->io_inode;
 
 	/*
 	 * blockdev_direct_IO can return an error even after the I/O
@@ -1331,7 +1332,7 @@ xfs_end_io_direct_write(
 	}
 
 	/* XXX: probably should move into the real I/O completion handler */
-	inode_dio_done(ioend->io_inode);
+	inode_dio_done(inode);
 }
 
 STATIC ssize_t
diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/xfs_aops.h
index 71f721e1a71f..71f721e1a71f 100644
--- a/fs/xfs/linux-2.6/xfs_aops.h
+++ b/fs/xfs/xfs_aops.h
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index cbae424fe1ba..160bcdc34a6e 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -2121,8 +2121,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
 
 		bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt,
 				 XBF_LOCK | XBF_DONT_BLOCK);
-		ASSERT(bp);
-		ASSERT(!XFS_BUF_GETERROR(bp));
+		ASSERT(!xfs_buf_geterror(bp));
 
 		tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen :
 							XFS_BUF_SIZE(bp);
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index ab3e5c6c4642..452a291383ab 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -3383,8 +3383,7 @@ xfs_bmap_local_to_extents(
 		ASSERT(args.len == 1);
 		*firstblock = args.fsbno;
 		bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
-		memcpy((char *)XFS_BUF_PTR(bp), ifp->if_u1.if_data,
-			ifp->if_bytes);
+		memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes);
 		xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
 		xfs_bmap_forkoff_reset(args.mp, ip, whichfork);
 		xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index cabf4b5604aa..2b9fd385e27d 100644
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -275,8 +275,7 @@ xfs_btree_dup_cursor(
 				return error;
 			}
 			new->bc_bufs[i] = bp;
-			ASSERT(bp);
-			ASSERT(!XFS_BUF_GETERROR(bp));
+			ASSERT(!xfs_buf_geterror(bp));
 		} else
 			new->bc_bufs[i] = NULL;
 	}
@@ -467,8 +466,7 @@ xfs_btree_get_bufl(
 	ASSERT(fsbno != NULLFSBLOCK);
 	d = XFS_FSB_TO_DADDR(mp, fsbno);
 	bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock);
-	ASSERT(bp);
-	ASSERT(!XFS_BUF_GETERROR(bp));
+	ASSERT(!xfs_buf_geterror(bp));
 	return bp;
 }
 
@@ -491,8 +489,7 @@ xfs_btree_get_bufs(
 	ASSERT(agbno != NULLAGBLOCK);
 	d = XFS_AGB_TO_DADDR(mp, agno, agbno);
 	bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock);
-	ASSERT(bp);
-	ASSERT(!XFS_BUF_GETERROR(bp));
+	ASSERT(!xfs_buf_geterror(bp));
 	return bp;
 }
 
@@ -632,7 +629,7 @@ xfs_btree_read_bufl(
 			mp->m_bsize, lock, &bp))) {
 		return error;
 	}
-	ASSERT(!bp || !XFS_BUF_GETERROR(bp));
+	ASSERT(!xfs_buf_geterror(bp));
 	if (bp)
 		XFS_BUF_SET_VTYPE_REF(bp, B_FS_MAP, refval);
 	*bpp = bp;
@@ -973,8 +970,7 @@ xfs_btree_get_buf_block(
 	*bpp = xfs_trans_get_buf(cur->bc_tp, mp->m_ddev_targp, d,
 				 mp->m_bsize, flags);
 
-	ASSERT(*bpp);
-	ASSERT(!XFS_BUF_GETERROR(*bpp));
+	ASSERT(!xfs_buf_geterror(*bpp));
 
 	*block = XFS_BUF_TO_BLOCK(*bpp);
 	return 0;
@@ -1006,8 +1002,7 @@ xfs_btree_read_buf_block(
 	if (error)
 		return error;
 
-	ASSERT(*bpp != NULL);
-	ASSERT(!XFS_BUF_GETERROR(*bpp));
+	ASSERT(!xfs_buf_geterror(*bpp));
 
 	xfs_btree_set_refs(cur, *bpp);
 	*block = XFS_BUF_TO_BLOCK(*bpp);
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 8d05a6a46ce3..5b240de104c0 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -262,7 +262,7 @@ typedef struct xfs_btree_cur
 /*
  * Convert from buffer to btree block header.
  */
-#define	XFS_BUF_TO_BLOCK(bp)	((struct xfs_btree_block *)XFS_BUF_PTR(bp))
+#define	XFS_BUF_TO_BLOCK(bp)	((struct xfs_btree_block *)((bp)->b_addr))
 
 
 /*
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/xfs_buf.c
index d1fe74506c4c..c57836dc778f 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -596,7 +596,7 @@ _xfs_buf_read(
 	bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD);
 
 	status = xfs_buf_iorequest(bp);
-	if (status || XFS_BUF_ISERROR(bp) || (flags & XBF_ASYNC))
+	if (status || bp->b_error || (flags & XBF_ASYNC))
 		return status;
 	return xfs_buf_iowait(bp);
 }
@@ -679,7 +679,6 @@ xfs_buf_read_uncached(
 	/* set up the buffer for a read IO */
 	XFS_BUF_SET_ADDR(bp, daddr);
 	XFS_BUF_READ(bp);
-	XFS_BUF_BUSY(bp);
 
 	xfsbdstrat(mp, bp);
 	error = xfs_buf_iowait(bp);
@@ -1069,7 +1068,7 @@ xfs_bioerror(
 	/*
 	 * No need to wait until the buffer is unpinned, we aren't flushing it.
 	 */
-	XFS_BUF_ERROR(bp, EIO);
+	xfs_buf_ioerror(bp, EIO);
 
 	/*
 	 * We're calling xfs_buf_ioend, so delete XBF_DONE flag.
@@ -1094,7 +1093,7 @@ STATIC int
 xfs_bioerror_relse(
 	struct xfs_buf	*bp)
 {
-	int64_t		fl = XFS_BUF_BFLAGS(bp);
+	int64_t		fl = bp->b_flags;
 	/*
 	 * No need to wait until the buffer is unpinned.
 	 * We aren't flushing it.
@@ -1115,7 +1114,7 @@ xfs_bioerror_relse(
 		 * There's no reason to mark error for
 		 * ASYNC buffers.
 		 */
-		XFS_BUF_ERROR(bp, EIO);
+		xfs_buf_ioerror(bp, EIO);
 		XFS_BUF_FINISH_IOWAIT(bp);
 	} else {
 		xfs_buf_relse(bp);
@@ -1324,7 +1323,7 @@ xfs_buf_offset(
 	struct page		*page;
 
 	if (bp->b_flags & XBF_MAPPED)
-		return XFS_BUF_PTR(bp) + offset;
+		return bp->b_addr + offset;
 
 	offset += bp->b_offset;
 	page = bp->b_pages[offset >> PAGE_SHIFT];
@@ -1484,7 +1483,7 @@ xfs_setsize_buftarg_flags(
 	if (set_blocksize(btp->bt_bdev, sectorsize)) {
 		xfs_warn(btp->bt_mount,
 			"Cannot set_blocksize to %u on device %s\n",
-			sectorsize, XFS_BUFTARG_NAME(btp));
+			sectorsize, xfs_buf_target_name(btp));
 		return EINVAL;
 	}
 
@@ -1681,7 +1680,7 @@ xfs_buf_delwri_split(
 	list_for_each_entry_safe(bp, n, dwq, b_list) {
 		ASSERT(bp->b_flags & XBF_DELWRI);
 
-		if (!XFS_BUF_ISPINNED(bp) && xfs_buf_trylock(bp)) {
+		if (!xfs_buf_ispinned(bp) && xfs_buf_trylock(bp)) {
 			if (!force &&
 			    time_before(jiffies, bp->b_queuetime + age)) {
 				xfs_buf_unlock(bp);
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/xfs_buf.h
index 6a83b46b4bcf..620972b8094d 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/xfs_buf.h
@@ -228,11 +228,15 @@ extern void xfs_buf_delwri_promote(xfs_buf_t *);
 extern int xfs_buf_init(void);
 extern void xfs_buf_terminate(void);
 
-#define xfs_buf_target_name(target)	\
-	({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; })
+static inline const char *
+xfs_buf_target_name(struct xfs_buftarg *target)
+{
+	static char __b[BDEVNAME_SIZE];
+
+	return bdevname(target->bt_bdev, __b);
+}
 
 
-#define XFS_BUF_BFLAGS(bp)	((bp)->b_flags)
 #define XFS_BUF_ZEROFLAGS(bp) \
 	((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI| \
 			    XBF_SYNCIO|XBF_FUA|XBF_FLUSH))
@@ -251,23 +255,14 @@ void xfs_buf_stale(struct xfs_buf *bp);
 #define XFS_BUF_UNDELAYWRITE(bp)	xfs_buf_delwri_dequeue(bp)
 #define XFS_BUF_ISDELAYWRITE(bp)	((bp)->b_flags & XBF_DELWRI)
 
-#define XFS_BUF_ERROR(bp,no)	xfs_buf_ioerror(bp,no)
-#define XFS_BUF_GETERROR(bp)	xfs_buf_geterror(bp)
-#define XFS_BUF_ISERROR(bp)	(xfs_buf_geterror(bp) ? 1 : 0)
-
 #define XFS_BUF_DONE(bp)	((bp)->b_flags |= XBF_DONE)
 #define XFS_BUF_UNDONE(bp)	((bp)->b_flags &= ~XBF_DONE)
 #define XFS_BUF_ISDONE(bp)	((bp)->b_flags & XBF_DONE)
 
-#define XFS_BUF_BUSY(bp)	do { } while (0)
-#define XFS_BUF_UNBUSY(bp)	do { } while (0)
-#define XFS_BUF_ISBUSY(bp)	(1)
-
 #define XFS_BUF_ASYNC(bp)	((bp)->b_flags |= XBF_ASYNC)
 #define XFS_BUF_UNASYNC(bp)	((bp)->b_flags &= ~XBF_ASYNC)
 #define XFS_BUF_ISASYNC(bp)	((bp)->b_flags & XBF_ASYNC)
 
-#define XFS_BUF_HOLD(bp)	xfs_buf_hold(bp)
 #define XFS_BUF_READ(bp)	((bp)->b_flags |= XBF_READ)
 #define XFS_BUF_UNREAD(bp)	((bp)->b_flags &= ~XBF_READ)
 #define XFS_BUF_ISREAD(bp)	((bp)->b_flags & XBF_READ)
@@ -276,10 +271,6 @@ void xfs_buf_stale(struct xfs_buf *bp);
 #define XFS_BUF_UNWRITE(bp)	((bp)->b_flags &= ~XBF_WRITE)
 #define XFS_BUF_ISWRITE(bp)	((bp)->b_flags & XBF_WRITE)
 
-#define XFS_BUF_SET_START(bp)			do { } while (0)
-
-#define XFS_BUF_PTR(bp)			(xfs_caddr_t)((bp)->b_addr)
-#define XFS_BUF_SET_PTR(bp, val, cnt)	xfs_buf_associate_memory(bp, val, cnt)
 #define XFS_BUF_ADDR(bp)		((bp)->b_bn)
 #define XFS_BUF_SET_ADDR(bp, bno)	((bp)->b_bn = (xfs_daddr_t)(bno))
 #define XFS_BUF_OFFSET(bp)		((bp)->b_file_offset)
@@ -299,14 +290,13 @@ xfs_buf_set_ref(
 #define XFS_BUF_SET_VTYPE_REF(bp, type, ref)	xfs_buf_set_ref(bp, ref)
 #define XFS_BUF_SET_VTYPE(bp, type)		do { } while (0)
 
-#define XFS_BUF_ISPINNED(bp)	atomic_read(&((bp)->b_pin_count))
+static inline int xfs_buf_ispinned(struct xfs_buf *bp)
+{
+	return atomic_read(&bp->b_pin_count);
+}
 
 #define XFS_BUF_FINISH_IOWAIT(bp)	complete(&bp->b_iowait);
 
-#define XFS_BUF_SET_TARGET(bp, target)	((bp)->b_target = (target))
-#define XFS_BUF_TARGET(bp)		((bp)->b_target)
-#define XFS_BUFTARG_NAME(target)	xfs_buf_target_name(target)
-
 static inline void xfs_buf_relse(xfs_buf_t *bp)
 {
 	xfs_buf_unlock(bp);
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 88492916c3dc..ef43fce519a1 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -124,9 +124,9 @@ xfs_buf_item_log_check(
 
 	bp = bip->bli_buf;
 	ASSERT(XFS_BUF_COUNT(bp) > 0);
-	ASSERT(XFS_BUF_PTR(bp) != NULL);
+	ASSERT(bp->b_addr != NULL);
 	orig = bip->bli_orig;
-	buffer = XFS_BUF_PTR(bp);
+	buffer = bp->b_addr;
 	for (x = 0; x < XFS_BUF_COUNT(bp); x++) {
 		if (orig[x] != buffer[x] && !btst(bip->bli_logged, x)) {
 			xfs_emerg(bp->b_mount,
@@ -371,7 +371,6 @@ xfs_buf_item_pin(
 {
 	struct xfs_buf_log_item	*bip = BUF_ITEM(lip);
 
-	ASSERT(XFS_BUF_ISBUSY(bip->bli_buf));
 	ASSERT(atomic_read(&bip->bli_refcount) > 0);
 	ASSERT((bip->bli_flags & XFS_BLI_LOGGED) ||
 	       (bip->bli_flags & XFS_BLI_STALE));
@@ -479,13 +478,13 @@ xfs_buf_item_trylock(
 	struct xfs_buf_log_item	*bip = BUF_ITEM(lip);
 	struct xfs_buf		*bp = bip->bli_buf;
 
-	if (XFS_BUF_ISPINNED(bp))
+	if (xfs_buf_ispinned(bp))
 		return XFS_ITEM_PINNED;
 	if (!xfs_buf_trylock(bp))
 		return XFS_ITEM_LOCKED;
 
 	/* take a reference to the buffer.  */
-	XFS_BUF_HOLD(bp);
+	xfs_buf_hold(bp);
 
 	ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
 	trace_xfs_buf_item_trylock(bip);
@@ -630,7 +629,7 @@ xfs_buf_item_push(
  * the xfsbufd to get this buffer written. We have to unlock the buffer
  * to allow the xfsbufd to write it, too.
  */
-STATIC void
+STATIC bool
 xfs_buf_item_pushbuf(
 	struct xfs_log_item	*lip)
 {
@@ -644,6 +643,7 @@ xfs_buf_item_pushbuf(
 
 	xfs_buf_delwri_promote(bp);
 	xfs_buf_relse(bp);
+	return true;
 }
 
 STATIC void
@@ -726,7 +726,7 @@ xfs_buf_item_init(
 	 * to have logged.
 	 */
 	bip->bli_orig = (char *)kmem_alloc(XFS_BUF_COUNT(bp), KM_SLEEP);
-	memcpy(bip->bli_orig, XFS_BUF_PTR(bp), XFS_BUF_COUNT(bp));
+	memcpy(bip->bli_orig, bp->b_addr, XFS_BUF_COUNT(bp));
 	bip->bli_logged = (char *)kmem_zalloc(XFS_BUF_COUNT(bp) / NBBY, KM_SLEEP);
 #endif
 
@@ -895,7 +895,6 @@ xfs_buf_attach_iodone(
 {
 	xfs_log_item_t	*head_lip;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(xfs_buf_islocked(bp));
 
 	lip->li_cb = cb;
@@ -960,7 +959,7 @@ xfs_buf_iodone_callbacks(
 	static ulong		lasttime;
 	static xfs_buftarg_t	*lasttarg;
 
-	if (likely(!XFS_BUF_GETERROR(bp)))
+	if (likely(!xfs_buf_geterror(bp)))
 		goto do_callbacks;
 
 	/*
@@ -973,14 +972,14 @@ xfs_buf_iodone_callbacks(
 		goto do_callbacks;
 	}
 
-	if (XFS_BUF_TARGET(bp) != lasttarg ||
+	if (bp->b_target != lasttarg ||
 	    time_after(jiffies, (lasttime + 5*HZ))) {
 		lasttime = jiffies;
 		xfs_alert(mp, "Device %s: metadata write error block 0x%llx",
-			XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)),
+			xfs_buf_target_name(bp->b_target),
 		      (__uint64_t)XFS_BUF_ADDR(bp));
 	}
-	lasttarg = XFS_BUF_TARGET(bp);
+	lasttarg = bp->b_target;
 
 	/*
 	 * If the write was asynchronous then no one will be looking for the
@@ -991,12 +990,11 @@ xfs_buf_iodone_callbacks(
 	 * around.
 	 */
 	if (XFS_BUF_ISASYNC(bp)) {
-		XFS_BUF_ERROR(bp, 0); /* errno of 0 unsets the flag */
+		xfs_buf_ioerror(bp, 0); /* errno of 0 unsets the flag */
 
 		if (!XFS_BUF_ISSTALE(bp)) {
 			XFS_BUF_DELAYWRITE(bp);
 			XFS_BUF_DONE(bp);
-			XFS_BUF_SET_START(bp);
 		}
 		ASSERT(bp->b_iodone != NULL);
 		trace_xfs_buf_item_iodone_async(bp, _RET_IP_);
@@ -1013,7 +1011,6 @@ xfs_buf_iodone_callbacks(
 	XFS_BUF_UNDELAYWRITE(bp);
 
 	trace_xfs_buf_error_relse(bp, _RET_IP_);
-	xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
 
 do_callbacks:
 	xfs_buf_do_callbacks(bp);
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index 5bfcb8779f9f..ee9d5427fcd4 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -2050,7 +2050,7 @@ xfs_da_do_buf(
 		case 0:
 			bp = xfs_trans_get_buf(trans, mp->m_ddev_targp,
 				mappedbno, nmapped, 0);
-			error = bp ? XFS_BUF_GETERROR(bp) : XFS_ERROR(EIO);
+			error = bp ? bp->b_error : XFS_ERROR(EIO);
 			break;
 		case 1:
 		case 2:
@@ -2268,7 +2268,7 @@ xfs_da_buf_make(int nbuf, xfs_buf_t **bps)
 		dabuf->nbuf = 1;
 		bp = bps[0];
 		dabuf->bbcount = (short)BTOBB(XFS_BUF_COUNT(bp));
-		dabuf->data = XFS_BUF_PTR(bp);
+		dabuf->data = bp->b_addr;
 		dabuf->bps[0] = bp;
 	} else {
 		dabuf->nbuf = nbuf;
@@ -2279,7 +2279,7 @@ xfs_da_buf_make(int nbuf, xfs_buf_t **bps)
 		dabuf->data = kmem_alloc(BBTOB(dabuf->bbcount), KM_SLEEP);
 		for (i = off = 0; i < nbuf; i++, off += XFS_BUF_COUNT(bp)) {
 			bp = bps[i];
-			memcpy((char *)dabuf->data + off, XFS_BUF_PTR(bp),
+			memcpy((char *)dabuf->data + off, bp->b_addr,
 				XFS_BUF_COUNT(bp));
 		}
 	}
@@ -2302,8 +2302,8 @@ xfs_da_buf_clean(xfs_dabuf_t *dabuf)
 		for (i = off = 0; i < dabuf->nbuf;
 				i++, off += XFS_BUF_COUNT(bp)) {
 			bp = dabuf->bps[i];
-			memcpy(XFS_BUF_PTR(bp), (char *)dabuf->data + off,
-				XFS_BUF_COUNT(bp));
+			memcpy(bp->b_addr, dabuf->data + off,
+						XFS_BUF_COUNT(bp));
 		}
 	}
 }
@@ -2340,7 +2340,7 @@ xfs_da_log_buf(xfs_trans_t *tp, xfs_dabuf_t *dabuf, uint first, uint last)
 
 	ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]);
 	if (dabuf->nbuf == 1) {
-		ASSERT(dabuf->data == (void *)XFS_BUF_PTR(dabuf->bps[0]));
+		ASSERT(dabuf->data == dabuf->bps[0]->b_addr);
 		xfs_trans_log_buf(tp, dabuf->bps[0], first, last);
 		return;
 	}
diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h
index dffba9ba0db6..a3721633abc8 100644
--- a/fs/xfs/xfs_dinode.h
+++ b/fs/xfs/xfs_dinode.h
@@ -148,7 +148,7 @@ typedef enum xfs_dinode_fmt {
 		be32_to_cpu((dip)->di_nextents) : \
 		be16_to_cpu((dip)->di_anextents))
 
-#define	XFS_BUF_TO_DINODE(bp)	((xfs_dinode_t *)XFS_BUF_PTR(bp))
+#define	XFS_BUF_TO_DINODE(bp)	((xfs_dinode_t *)((bp)->b_addr))
 
 /*
  * For block and character special files the 32bit dev_t is stored at the
diff --git a/fs/xfs/linux-2.6/xfs_discard.c b/fs/xfs/xfs_discard.c
index 244e797dae32..244e797dae32 100644
--- a/fs/xfs/linux-2.6/xfs_discard.c
+++ b/fs/xfs/xfs_discard.c
diff --git a/fs/xfs/linux-2.6/xfs_discard.h b/fs/xfs/xfs_discard.h
index 344879aea646..344879aea646 100644
--- a/fs/xfs/linux-2.6/xfs_discard.h
+++ b/fs/xfs/xfs_discard.h
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 837f31158d43..db62959bed13 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -318,10 +318,9 @@ xfs_qm_init_dquot_blk(
 	int		curid, i;
 
 	ASSERT(tp);
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(xfs_buf_islocked(bp));
 
-	d = (xfs_dqblk_t *)XFS_BUF_PTR(bp);
+	d = bp->b_addr;
 
 	/*
 	 * ID of the first dquot in the block - id's are zero based.
@@ -403,7 +402,7 @@ xfs_qm_dqalloc(
 			       dqp->q_blkno,
 			       mp->m_quotainfo->qi_dqchunklen,
 			       0);
-	if (!bp || (error = XFS_BUF_GETERROR(bp)))
+	if (!bp || (error = xfs_buf_geterror(bp)))
 		goto error1;
 	/*
 	 * Make a chunk of dquots out of this buffer and log
@@ -534,13 +533,12 @@ xfs_qm_dqtobp(
 			return XFS_ERROR(error);
 	}
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(xfs_buf_islocked(bp));
 
 	/*
 	 * calculate the location of the dquot inside the buffer.
 	 */
-	ddq = (struct xfs_disk_dquot *)(XFS_BUF_PTR(bp) + dqp->q_bufoffset);
+	ddq = bp->b_addr + dqp->q_bufoffset;
 
 	/*
 	 * A simple sanity check in case we got a corrupted dquot...
@@ -553,7 +551,6 @@ xfs_qm_dqtobp(
 			xfs_trans_brelse(tp, bp);
 			return XFS_ERROR(EIO);
 		}
-		XFS_BUF_BUSY(bp); /* We dirtied this */
 	}
 
 	*O_bpp = bp;
@@ -622,7 +619,6 @@ xfs_qm_dqread(
 	 * this particular dquot was repaired. We still aren't afraid to
 	 * brelse it because we have the changes incore.
 	 */
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(xfs_buf_islocked(bp));
 	xfs_trans_brelse(tp, bp);
 
@@ -1204,7 +1200,7 @@ xfs_qm_dqflush(
 	/*
 	 * Calculate the location of the dquot inside the buffer.
 	 */
-	ddqp = (struct xfs_disk_dquot *)(XFS_BUF_PTR(bp) + dqp->q_bufoffset);
+	ddqp = bp->b_addr + dqp->q_bufoffset;
 
 	/*
 	 * A simple sanity check in case we got a corrupted dquot..
@@ -1240,7 +1236,7 @@ xfs_qm_dqflush(
 	 * If the buffer is pinned then push on the log so we won't
 	 * get stuck waiting in the write for too long.
 	 */
-	if (XFS_BUF_ISPINNED(bp)) {
+	if (xfs_buf_ispinned(bp)) {
 		trace_xfs_dqflush_force(dqp);
 		xfs_log_force(mp, 0);
 	}
@@ -1447,7 +1443,7 @@ xfs_qm_dqflock_pushbuf_wait(
 		goto out_lock;
 
 	if (XFS_BUF_ISDELAYWRITE(bp)) {
-		if (XFS_BUF_ISPINNED(bp))
+		if (xfs_buf_ispinned(bp))
 			xfs_log_force(mp, 0);
 		xfs_buf_delwri_promote(bp);
 		wake_up_process(bp->b_target->bt_task);
diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/xfs_dquot.h
index 34b7e945dbfa..34b7e945dbfa 100644
--- a/fs/xfs/quota/xfs_dquot.h
+++ b/fs/xfs/xfs_dquot.h
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c
index 9e0e2fa3f2c8..bb3f71d236d2 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/xfs_dquot_item.c
@@ -183,13 +183,14 @@ xfs_qm_dqunpin_wait(
  * search the buffer cache can be a time consuming thing, and AIL lock is a
  * spinlock.
  */
-STATIC void
+STATIC bool
 xfs_qm_dquot_logitem_pushbuf(
 	struct xfs_log_item	*lip)
 {
 	struct xfs_dq_logitem	*qlip = DQUOT_ITEM(lip);
 	struct xfs_dquot	*dqp = qlip->qli_dquot;
 	struct xfs_buf		*bp;
+	bool			ret = true;
 
 	ASSERT(XFS_DQ_IS_LOCKED(dqp));
 
@@ -201,17 +202,20 @@ xfs_qm_dquot_logitem_pushbuf(
 	if (completion_done(&dqp->q_flush) ||
 	    !(lip->li_flags & XFS_LI_IN_AIL)) {
 		xfs_dqunlock(dqp);
-		return;
+		return true;
 	}
 
 	bp = xfs_incore(dqp->q_mount->m_ddev_targp, qlip->qli_format.qlf_blkno,
 			dqp->q_mount->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK);
 	xfs_dqunlock(dqp);
 	if (!bp)
-		return;
+		return true;
 	if (XFS_BUF_ISDELAYWRITE(bp))
 		xfs_buf_delwri_promote(bp);
+	if (xfs_buf_ispinned(bp))
+		ret = false;
 	xfs_buf_relse(bp);
+	return ret;
 }
 
 /*
diff --git a/fs/xfs/quota/xfs_dquot_item.h b/fs/xfs/xfs_dquot_item.h
index 5acae2ada70b..5acae2ada70b 100644
--- a/fs/xfs/quota/xfs_dquot_item.h
+++ b/fs/xfs/xfs_dquot_item.h
diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/xfs_export.c
index 75e5d322e48f..75e5d322e48f 100644
--- a/fs/xfs/linux-2.6/xfs_export.c
+++ b/fs/xfs/xfs_export.c
diff --git a/fs/xfs/linux-2.6/xfs_export.h b/fs/xfs/xfs_export.h
index 3272b6ae7a35..3272b6ae7a35 100644
--- a/fs/xfs/linux-2.6/xfs_export.h
+++ b/fs/xfs/xfs_export.h
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/xfs_file.c
index 7f7b42469ea7..7f7b42469ea7 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/xfs_file.c
diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/xfs_fs_subr.c
index ed88ed16811c..ed88ed16811c 100644
--- a/fs/xfs/linux-2.6/xfs_fs_subr.c
+++ b/fs/xfs/xfs_fs_subr.c
diff --git a/fs/xfs/linux-2.6/xfs_globals.c b/fs/xfs/xfs_globals.c
index 76e81cff70b9..76e81cff70b9 100644
--- a/fs/xfs/linux-2.6/xfs_globals.c
+++ b/fs/xfs/xfs_globals.c
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index dd5628bd8d0b..9f24ec28283b 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -202,8 +202,7 @@ xfs_ialloc_inode_init(
 		fbuf = xfs_trans_get_buf(tp, mp->m_ddev_targp, d,
 					 mp->m_bsize * blks_per_cluster,
 					 XBF_LOCK);
-		ASSERT(fbuf);
-		ASSERT(!XFS_BUF_GETERROR(fbuf));
+		ASSERT(!xfs_buf_geterror(fbuf));
 
 		/*
 		 * Initialize all inodes in this buffer and then log them.
@@ -1486,7 +1485,7 @@ xfs_read_agi(
 	if (error)
 		return error;
 
-	ASSERT(*bpp && !XFS_BUF_GETERROR(*bpp));
+	ASSERT(!xfs_buf_geterror(*bpp));
 	agi = XFS_BUF_TO_AGI(*bpp);
 
 	/*
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 2fcca4b03ed3..0239a7c7c886 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2473,7 +2473,7 @@ cluster_corrupt_out:
 		if (bp->b_iodone) {
 			XFS_BUF_UNDONE(bp);
 			XFS_BUF_STALE(bp);
-			XFS_BUF_ERROR(bp,EIO);
+			xfs_buf_ioerror(bp, EIO);
 			xfs_buf_ioend(bp, 0);
 		} else {
 			XFS_BUF_STALE(bp);
@@ -2585,7 +2585,7 @@ xfs_iflush(
 	 * If the buffer is pinned then push on the log now so we won't
 	 * get stuck waiting in the write for too long.
 	 */
-	if (XFS_BUF_ISPINNED(bp))
+	if (xfs_buf_ispinned(bp))
 		xfs_log_force(mp, 0);
 
 	/*
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 588406dc6a35..836ad80d4f2b 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -708,13 +708,14 @@ xfs_inode_item_committed(
  * marked delayed write. If that's the case, we'll promote it and that will
  * allow the caller to write the buffer by triggering the xfsbufd to run.
  */
-STATIC void
+STATIC bool
 xfs_inode_item_pushbuf(
 	struct xfs_log_item	*lip)
 {
 	struct xfs_inode_log_item *iip = INODE_ITEM(lip);
 	struct xfs_inode	*ip = iip->ili_inode;
 	struct xfs_buf		*bp;
+	bool			ret = true;
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
 
@@ -725,7 +726,7 @@ xfs_inode_item_pushbuf(
 	if (completion_done(&ip->i_flush) ||
 	    !(lip->li_flags & XFS_LI_IN_AIL)) {
 		xfs_iunlock(ip, XFS_ILOCK_SHARED);
-		return;
+		return true;
 	}
 
 	bp = xfs_incore(ip->i_mount->m_ddev_targp, iip->ili_format.ilf_blkno,
@@ -733,10 +734,13 @@ xfs_inode_item_pushbuf(
 
 	xfs_iunlock(ip, XFS_ILOCK_SHARED);
 	if (!bp)
-		return;
+		return true;
 	if (XFS_BUF_ISDELAYWRITE(bp))
 		xfs_buf_delwri_promote(bp);
+	if (xfs_buf_ispinned(bp))
+		ret = false;
 	xfs_buf_relse(bp);
+	return ret;
 }
 
 /*
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index f7ce7debe14c..f7ce7debe14c 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h
index d56173b34a2a..d56173b34a2a 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.h
+++ b/fs/xfs/xfs_ioctl.h
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c
index 54e623bfbb85..54e623bfbb85 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.c
+++ b/fs/xfs/xfs_ioctl32.c
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.h b/fs/xfs/xfs_ioctl32.h
index 80f4060e8970..80f4060e8970 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.h
+++ b/fs/xfs/xfs_ioctl32.h
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/xfs_iops.c
index b9c172b3fbbe..28856accb4fa 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -70,9 +70,8 @@ xfs_synchronize_times(
 }
 
 /*
- * If the linux inode is valid, mark it dirty.
- * Used when committing a dirty inode into a transaction so that
- * the inode will get written back by the linux code
+ * If the linux inode is valid, mark it dirty, else mark the dirty state
+ * in the XFS inode to make sure we pick it up when reclaiming the inode.
  */
 void
 xfs_mark_inode_dirty_sync(
@@ -82,6 +81,10 @@ xfs_mark_inode_dirty_sync(
 
 	if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
 		mark_inode_dirty_sync(inode);
+	else {
+		barrier();
+		ip->i_update_core = 1;
+	}
 }
 
 void
@@ -92,6 +95,28 @@ xfs_mark_inode_dirty(
 
 	if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
 		mark_inode_dirty(inode);
+	else {
+		barrier();
+		ip->i_update_core = 1;
+	}
+
+}
+
+
+int xfs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+		   void *fs_info)
+{
+	const struct xattr *xattr;
+	struct xfs_inode *ip = XFS_I(inode);
+	int error = 0;
+
+	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+		error = xfs_attr_set(ip, xattr->name, xattr->value,
+				     xattr->value_len, ATTR_SECURE);
+		if (error < 0)
+			break;
+	}
+	return error;
 }
 
 /*
@@ -100,31 +125,15 @@ xfs_mark_inode_dirty(
  * these attrs can be journalled at inode creation time (along with the
  * inode, of course, such that log replay can't cause these to be lost).
  */
+
 STATIC int
 xfs_init_security(
 	struct inode	*inode,
 	struct inode	*dir,
 	const struct qstr *qstr)
 {
-	struct xfs_inode *ip = XFS_I(inode);
-	size_t		length;
-	void		*value;
-	unsigned char	*name;
-	int		error;
-
-	error = security_inode_init_security(inode, dir, qstr, (char **)&name,
-					     &value, &length);
-	if (error) {
-		if (error == -EOPNOTSUPP)
-			return 0;
-		return -error;
-	}
-
-	error = xfs_attr_set(ip, name, value, length, ATTR_SECURE);
-
-	kfree(name);
-	kfree(value);
-	return error;
+	return security_inode_init_security(inode, dir, qstr,
+					    &xfs_initxattrs, NULL);
 }
 
 static void
diff --git a/fs/xfs/linux-2.6/xfs_iops.h b/fs/xfs/xfs_iops.h
index ef41c92ce66e..ef41c92ce66e 100644
--- a/fs/xfs/linux-2.6/xfs_iops.h
+++ b/fs/xfs/xfs_iops.h
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/xfs_linux.h
index d42f814e4d35..828662f70d64 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -32,13 +32,12 @@
 # define XFS_BIG_INUMS	0
 #endif
 
-#include <xfs_types.h>
+#include "xfs_types.h"
 
-#include <kmem.h>
-#include <mrlock.h>
-#include <time.h>
-
-#include <support/uuid.h>
+#include "kmem.h"
+#include "mrlock.h"
+#include "time.h"
+#include "uuid.h"
 
 #include <linux/semaphore.h>
 #include <linux/mm.h>
@@ -69,6 +68,8 @@
 #include <linux/ctype.h>
 #include <linux/writeback.h>
 #include <linux/capability.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
 #include <linux/list_sort.h>
 
 #include <asm/page.h>
@@ -78,14 +79,14 @@
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
 
-#include <xfs_vnode.h>
-#include <xfs_stats.h>
-#include <xfs_sysctl.h>
-#include <xfs_iops.h>
-#include <xfs_aops.h>
-#include <xfs_super.h>
-#include <xfs_buf.h>
-#include <xfs_message.h>
+#include "xfs_vnode.h"
+#include "xfs_stats.h"
+#include "xfs_sysctl.h"
+#include "xfs_iops.h"
+#include "xfs_aops.h"
+#include "xfs_super.h"
+#include "xfs_buf.h"
+#include "xfs_message.h"
 
 #ifdef __BIG_ENDIAN
 #define XFS_NATIVE_HOST 1
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 06ff8437ed8e..3a8d4f66d702 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -878,7 +878,7 @@ xlog_iodone(xfs_buf_t *bp)
 	/*
 	 * Race to shutdown the filesystem if we see an error.
 	 */
-	if (XFS_TEST_ERROR((XFS_BUF_GETERROR(bp)), l->l_mp,
+	if (XFS_TEST_ERROR((xfs_buf_geterror(bp)), l->l_mp,
 			XFS_ERRTAG_IODONE_IOERR, XFS_RANDOM_IODONE_IOERR)) {
 		xfs_ioerror_alert("xlog_iodone", l->l_mp, bp, XFS_BUF_ADDR(bp));
 		XFS_BUF_STALE(bp);
@@ -1051,7 +1051,6 @@ xlog_alloc_log(xfs_mount_t	*mp,
 	if (!bp)
 		goto out_free_log;
 	bp->b_iodone = xlog_iodone;
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(xfs_buf_islocked(bp));
 	log->l_xbuf = bp;
 
@@ -1108,7 +1107,6 @@ xlog_alloc_log(xfs_mount_t	*mp,
 		iclog->ic_callback_tail = &(iclog->ic_callback);
 		iclog->ic_datap = (char *)iclog->ic_data + log->l_iclog_hsize;
 
-		ASSERT(XFS_BUF_ISBUSY(iclog->ic_bp));
 		ASSERT(xfs_buf_islocked(iclog->ic_bp));
 		init_waitqueue_head(&iclog->ic_force_wait);
 		init_waitqueue_head(&iclog->ic_write_wait);
@@ -1248,7 +1246,7 @@ xlog_bdstrat(
 	struct xlog_in_core	*iclog = bp->b_fspriv;
 
 	if (iclog->ic_state & XLOG_STATE_IOERROR) {
-		XFS_BUF_ERROR(bp, EIO);
+		xfs_buf_ioerror(bp, EIO);
 		XFS_BUF_STALE(bp);
 		xfs_buf_ioend(bp, 0);
 		/*
@@ -1355,7 +1353,6 @@ xlog_sync(xlog_t		*log,
 	XFS_BUF_SET_COUNT(bp, count);
 	bp->b_fspriv = iclog;
 	XFS_BUF_ZEROFLAGS(bp);
-	XFS_BUF_BUSY(bp);
 	XFS_BUF_ASYNC(bp);
 	bp->b_flags |= XBF_SYNCIO;
 
@@ -1398,16 +1395,15 @@ xlog_sync(xlog_t		*log,
 	if (split) {
 		bp = iclog->ic_log->l_xbuf;
 		XFS_BUF_SET_ADDR(bp, 0);	     /* logical 0 */
-		XFS_BUF_SET_PTR(bp, (xfs_caddr_t)((__psint_t)&(iclog->ic_header)+
-					    (__psint_t)count), split);
+		xfs_buf_associate_memory(bp,
+				(char *)&iclog->ic_header + count, split);
 		bp->b_fspriv = iclog;
 		XFS_BUF_ZEROFLAGS(bp);
-		XFS_BUF_BUSY(bp);
 		XFS_BUF_ASYNC(bp);
 		bp->b_flags |= XBF_SYNCIO;
 		if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
 			bp->b_flags |= XBF_FUA;
-		dptr = XFS_BUF_PTR(bp);
+		dptr = bp->b_addr;
 		/*
 		 * Bump the cycle numbers at the start of each block
 		 * since this part of the buffer is at the start of
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 052a2c0ec5fb..a199dbcee7d8 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -147,7 +147,7 @@ xlog_align(
 	xfs_daddr_t	offset = blk_no & ((xfs_daddr_t)log->l_sectBBsize - 1);
 
 	ASSERT(BBTOB(offset + nbblks) <= XFS_BUF_SIZE(bp));
-	return XFS_BUF_PTR(bp) + BBTOB(offset);
+	return bp->b_addr + BBTOB(offset);
 }
 
 
@@ -178,9 +178,7 @@ xlog_bread_noalign(
 
 	XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no);
 	XFS_BUF_READ(bp);
-	XFS_BUF_BUSY(bp);
 	XFS_BUF_SET_COUNT(bp, BBTOB(nbblks));
-	XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp);
 
 	xfsbdstrat(log->l_mp, bp);
 	error = xfs_buf_iowait(bp);
@@ -220,18 +218,18 @@ xlog_bread_offset(
 	xfs_buf_t	*bp,
 	xfs_caddr_t	offset)
 {
-	xfs_caddr_t	orig_offset = XFS_BUF_PTR(bp);
+	xfs_caddr_t	orig_offset = bp->b_addr;
 	int		orig_len = bp->b_buffer_length;
 	int		error, error2;
 
-	error = XFS_BUF_SET_PTR(bp, offset, BBTOB(nbblks));
+	error = xfs_buf_associate_memory(bp, offset, BBTOB(nbblks));
 	if (error)
 		return error;
 
 	error = xlog_bread_noalign(log, blk_no, nbblks, bp);
 
 	/* must reset buffer pointer even on error */
-	error2 = XFS_BUF_SET_PTR(bp, orig_offset, orig_len);
+	error2 = xfs_buf_associate_memory(bp, orig_offset, orig_len);
 	if (error)
 		return error;
 	return error2;
@@ -266,11 +264,9 @@ xlog_bwrite(
 
 	XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no);
 	XFS_BUF_ZEROFLAGS(bp);
-	XFS_BUF_BUSY(bp);
-	XFS_BUF_HOLD(bp);
+	xfs_buf_hold(bp);
 	xfs_buf_lock(bp);
 	XFS_BUF_SET_COUNT(bp, BBTOB(nbblks));
-	XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp);
 
 	if ((error = xfs_bwrite(log->l_mp, bp)))
 		xfs_ioerror_alert("xlog_bwrite", log->l_mp,
@@ -360,7 +356,7 @@ STATIC void
 xlog_recover_iodone(
 	struct xfs_buf	*bp)
 {
-	if (XFS_BUF_GETERROR(bp)) {
+	if (bp->b_error) {
 		/*
 		 * We're not going to bother about retrying
 		 * this during recovery. One strike!
@@ -1262,7 +1258,7 @@ xlog_write_log_records(
 		 */
 		ealign = round_down(end_block, sectbb);
 		if (j == 0 && (start_block + endcount > ealign)) {
-			offset = XFS_BUF_PTR(bp) + BBTOB(ealign - start_block);
+			offset = bp->b_addr + BBTOB(ealign - start_block);
 			error = xlog_bread_offset(log, ealign, sectbb,
 							bp, offset);
 			if (error)
@@ -2135,15 +2131,16 @@ xlog_recover_buffer_pass2(
 
 	bp = xfs_buf_read(mp->m_ddev_targp, buf_f->blf_blkno, buf_f->blf_len,
 			  buf_flags);
-	if (XFS_BUF_ISERROR(bp)) {
+	if (!bp)
+		return XFS_ERROR(ENOMEM);
+	error = bp->b_error;
+	if (error) {
 		xfs_ioerror_alert("xlog_recover_do..(read#1)", mp,
 				  bp, buf_f->blf_blkno);
-		error = XFS_BUF_GETERROR(bp);
 		xfs_buf_relse(bp);
 		return error;
 	}
 
-	error = 0;
 	if (buf_f->blf_flags & XFS_BLF_INODE_BUF) {
 		error = xlog_recover_do_inode_buffer(mp, item, bp, buf_f);
 	} else if (buf_f->blf_flags &
@@ -2227,14 +2224,17 @@ xlog_recover_inode_pass2(
 
 	bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len,
 			  XBF_LOCK);
-	if (XFS_BUF_ISERROR(bp)) {
+	if (!bp) {
+		error = ENOMEM;
+		goto error;
+	}
+	error = bp->b_error;
+	if (error) {
 		xfs_ioerror_alert("xlog_recover_do..(read#2)", mp,
 				  bp, in_f->ilf_blkno);
-		error = XFS_BUF_GETERROR(bp);
 		xfs_buf_relse(bp);
 		goto error;
 	}
-	error = 0;
 	ASSERT(in_f->ilf_fields & XFS_ILOG_CORE);
 	dip = (xfs_dinode_t *)xfs_buf_offset(bp, in_f->ilf_boffset);
 
@@ -3437,7 +3437,7 @@ xlog_do_recovery_pass(
 			/*
 			 * Check for header wrapping around physical end-of-log
 			 */
-			offset = XFS_BUF_PTR(hbp);
+			offset = hbp->b_addr;
 			split_hblks = 0;
 			wrapped_hblks = 0;
 			if (blk_no + hblks <= log->l_logBBsize) {
@@ -3497,7 +3497,7 @@ xlog_do_recovery_pass(
 			} else {
 				/* This log record is split across the
 				 * physical end of log */
-				offset = XFS_BUF_PTR(dbp);
+				offset = dbp->b_addr;
 				split_bblks = 0;
 				if (blk_no != log->l_logBBsize) {
 					/* some data is before the physical
diff --git a/fs/xfs/linux-2.6/xfs_message.c b/fs/xfs/xfs_message.c
index bd672def95ac..bd672def95ac 100644
--- a/fs/xfs/linux-2.6/xfs_message.c
+++ b/fs/xfs/xfs_message.c
diff --git a/fs/xfs/linux-2.6/xfs_message.h b/fs/xfs/xfs_message.h
index 7fb7ea007672..7fb7ea007672 100644
--- a/fs/xfs/linux-2.6/xfs_message.h
+++ b/fs/xfs/xfs_message.h
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 092e16ae4d9d..0081657ad985 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1615,7 +1615,7 @@ xfs_unmountfs_writesb(xfs_mount_t *mp)
 		XFS_BUF_UNDELAYWRITE(sbp);
 		XFS_BUF_WRITE(sbp);
 		XFS_BUF_UNASYNC(sbp);
-		ASSERT(XFS_BUF_TARGET(sbp) == mp->m_ddev_targp);
+		ASSERT(sbp->b_target == mp->m_ddev_targp);
 		xfsbdstrat(mp, sbp);
 		error = xfs_buf_iowait(sbp);
 		if (error)
@@ -1938,7 +1938,7 @@ xfs_getsb(
 		xfs_buf_lock(bp);
 	}
 
-	XFS_BUF_HOLD(bp);
+	xfs_buf_hold(bp);
 	ASSERT(XFS_BUF_ISDONE(bp));
 	return bp;
 }
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/xfs_qm.c
index 46e54ad9a2dc..9a0aa76facdf 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1240,7 +1240,7 @@ xfs_qm_reset_dqcounts(
 	do_div(j, sizeof(xfs_dqblk_t));
 	ASSERT(mp->m_quotainfo->qi_dqperchunk == j);
 #endif
-	ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp);
+	ddq = bp->b_addr;
 	for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) {
 		/*
 		 * Do a sanity check, and if needed, repair the dqblk. Don't
diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/xfs_qm.h
index 43b9abe1052c..43b9abe1052c 100644
--- a/fs/xfs/quota/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/xfs_qm_bhv.c
index a0a829addca9..a0a829addca9 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/xfs_qm_bhv.c
diff --git a/fs/xfs/quota/xfs_qm_stats.c b/fs/xfs/xfs_qm_stats.c
index 8671a0b32644..8671a0b32644 100644
--- a/fs/xfs/quota/xfs_qm_stats.c
+++ b/fs/xfs/xfs_qm_stats.c
diff --git a/fs/xfs/quota/xfs_qm_stats.h b/fs/xfs/xfs_qm_stats.h
index 5b964fc0dc09..5b964fc0dc09 100644
--- a/fs/xfs/quota/xfs_qm_stats.h
+++ b/fs/xfs/xfs_qm_stats.h
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 609246f42e6c..609246f42e6c 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
diff --git a/fs/xfs/quota/xfs_quota_priv.h b/fs/xfs/xfs_quota_priv.h
index 94a3d927d716..94a3d927d716 100644
--- a/fs/xfs/quota/xfs_quota_priv.h
+++ b/fs/xfs/xfs_quota_priv.h
diff --git a/fs/xfs/linux-2.6/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
index 29b9d642e93d..7e76f537abb7 100644
--- a/fs/xfs/linux-2.6/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -25,7 +25,7 @@
 #include "xfs_trans.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_inode.h"
-#include "quota/xfs_qm.h"
+#include "xfs_qm.h"
 #include <linux/quota.h>
 
 
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 8f76fdff4f46..35561a511b57 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -168,7 +168,7 @@ error_cancel:
 				xfs_trans_cancel(tp, cancelflags);
 				goto error;
 			}
-			memset(XFS_BUF_PTR(bp), 0, mp->m_sb.sb_blocksize);
+			memset(bp->b_addr, 0, mp->m_sb.sb_blocksize);
 			xfs_trans_log_buf(tp, bp, 0, mp->m_sb.sb_blocksize - 1);
 			/*
 			 * Commit the transaction.
@@ -883,7 +883,7 @@ xfs_rtbuf_get(
 	if (error) {
 		return error;
 	}
-	ASSERT(bp && !XFS_BUF_GETERROR(bp));
+	ASSERT(!xfs_buf_geterror(bp));
 	*bpp = bp;
 	return 0;
 }
@@ -943,7 +943,7 @@ xfs_rtcheck_range(
 	if (error) {
 		return error;
 	}
-	bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+	bufp = bp->b_addr;
 	/*
 	 * Compute the starting word's address, and starting bit.
 	 */
@@ -994,7 +994,7 @@ xfs_rtcheck_range(
 			if (error) {
 				return error;
 			}
-			b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			b = bufp = bp->b_addr;
 			word = 0;
 		} else {
 			/*
@@ -1040,7 +1040,7 @@ xfs_rtcheck_range(
 			if (error) {
 				return error;
 			}
-			b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			b = bufp = bp->b_addr;
 			word = 0;
 		} else {
 			/*
@@ -1158,7 +1158,7 @@ xfs_rtfind_back(
 	if (error) {
 		return error;
 	}
-	bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+	bufp = bp->b_addr;
 	/*
 	 * Get the first word's index & point to it.
 	 */
@@ -1210,7 +1210,7 @@ xfs_rtfind_back(
 			if (error) {
 				return error;
 			}
-			bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			bufp = bp->b_addr;
 			word = XFS_BLOCKWMASK(mp);
 			b = &bufp[word];
 		} else {
@@ -1256,7 +1256,7 @@ xfs_rtfind_back(
 			if (error) {
 				return error;
 			}
-			bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			bufp = bp->b_addr;
 			word = XFS_BLOCKWMASK(mp);
 			b = &bufp[word];
 		} else {
@@ -1333,7 +1333,7 @@ xfs_rtfind_forw(
 	if (error) {
 		return error;
 	}
-	bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+	bufp = bp->b_addr;
 	/*
 	 * Get the first word's index & point to it.
 	 */
@@ -1384,7 +1384,7 @@ xfs_rtfind_forw(
 			if (error) {
 				return error;
 			}
-			b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			b = bufp = bp->b_addr;
 			word = 0;
 		} else {
 			/*
@@ -1429,7 +1429,7 @@ xfs_rtfind_forw(
 			if (error) {
 				return error;
 			}
-			b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			b = bufp = bp->b_addr;
 			word = 0;
 		} else {
 			/*
@@ -1649,7 +1649,7 @@ xfs_rtmodify_range(
 	if (error) {
 		return error;
 	}
-	bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+	bufp = bp->b_addr;
 	/*
 	 * Compute the starting word's address, and starting bit.
 	 */
@@ -1694,7 +1694,7 @@ xfs_rtmodify_range(
 			if (error) {
 				return error;
 			}
-			first = b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			first = b = bufp = bp->b_addr;
 			word = 0;
 		} else {
 			/*
@@ -1734,7 +1734,7 @@ xfs_rtmodify_range(
 			if (error) {
 				return error;
 			}
-			first = b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
+			first = b = bufp = bp->b_addr;
 			word = 0;
 		} else {
 			/*
@@ -1832,8 +1832,8 @@ xfs_rtmodify_summary(
 	 */
 	sp = XFS_SUMPTR(mp, bp, so);
 	*sp += delta;
-	xfs_trans_log_buf(tp, bp, (uint)((char *)sp - (char *)XFS_BUF_PTR(bp)),
-		(uint)((char *)sp - (char *)XFS_BUF_PTR(bp) + sizeof(*sp) - 1));
+	xfs_trans_log_buf(tp, bp, (uint)((char *)sp - (char *)bp->b_addr),
+		(uint)((char *)sp - (char *)bp->b_addr + sizeof(*sp) - 1));
 	return 0;
 }
 
diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h
index 09e1f4f35e97..f7f3a359c1c5 100644
--- a/fs/xfs/xfs_rtalloc.h
+++ b/fs/xfs/xfs_rtalloc.h
@@ -47,7 +47,7 @@ struct xfs_trans;
 #define	XFS_SUMOFFSTOBLOCK(mp,s)	\
 	(((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
 #define	XFS_SUMPTR(mp,bp,so)	\
-	((xfs_suminfo_t *)((char *)XFS_BUF_PTR(bp) + \
+	((xfs_suminfo_t *)((bp)->b_addr + \
 		(((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
 
 #define	XFS_BITTOBLOCK(mp,bi)	((bi) >> (mp)->m_blkbit_log)
diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c
index d6d6fdfe9422..c96a8a05ac03 100644
--- a/fs/xfs/xfs_rw.c
+++ b/fs/xfs/xfs_rw.c
@@ -104,9 +104,9 @@ xfs_ioerror_alert(
 	xfs_alert(mp,
 		 "I/O error occurred: meta-data dev %s block 0x%llx"
 		 "       (\"%s\") error %d buf count %zd",
-		XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)),
+		xfs_buf_target_name(bp->b_target),
 		(__uint64_t)blkno, func,
-		XFS_BUF_GETERROR(bp), XFS_BUF_COUNT(bp));
+		bp->b_error, XFS_BUF_COUNT(bp));
 }
 
 /*
@@ -137,8 +137,8 @@ xfs_read_buf(
 	bp = xfs_buf_read(target, blkno, len, flags);
 	if (!bp)
 		return XFS_ERROR(EIO);
-	error = XFS_BUF_GETERROR(bp);
-	if (bp && !error && !XFS_FORCED_SHUTDOWN(mp)) {
+	error = bp->b_error;
+	if (!error && !XFS_FORCED_SHUTDOWN(mp)) {
 		*bpp = bp;
 	} else {
 		*bpp = NULL;
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h
index 1eb2ba586814..cb6ae715814a 100644
--- a/fs/xfs/xfs_sb.h
+++ b/fs/xfs/xfs_sb.h
@@ -509,7 +509,7 @@ static inline int xfs_sb_version_hasprojid32bit(xfs_sb_t *sbp)
 
 #define XFS_SB_DADDR		((xfs_daddr_t)0) /* daddr in filesystem/ag */
 #define	XFS_SB_BLOCK(mp)	XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
-#define XFS_BUF_TO_SBP(bp)	((xfs_dsb_t *)XFS_BUF_PTR(bp))
+#define XFS_BUF_TO_SBP(bp)	((xfs_dsb_t *)((bp)->b_addr))
 
 #define	XFS_HDR_BLOCK(mp,d)	((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
 #define	XFS_DADDR_TO_FSB(mp,d)	XFS_AGB_TO_FSB(mp, \
diff --git a/fs/xfs/linux-2.6/xfs_stats.c b/fs/xfs/xfs_stats.c
index 76fdc5861932..76fdc5861932 100644
--- a/fs/xfs/linux-2.6/xfs_stats.c
+++ b/fs/xfs/xfs_stats.c
diff --git a/fs/xfs/linux-2.6/xfs_stats.h b/fs/xfs/xfs_stats.h
index 736854b1ca1a..736854b1ca1a 100644
--- a/fs/xfs/linux-2.6/xfs_stats.h
+++ b/fs/xfs/xfs_stats.h
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/xfs_super.c
index 9a72dda58bd0..5cf06b85fd9d 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -356,6 +356,8 @@ xfs_parseargs(
 			mp->m_flags |= XFS_MOUNT_DELAYLOG;
 		} else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
 			mp->m_flags &= ~XFS_MOUNT_DELAYLOG;
+			xfs_warn(mp,
+	"nodelaylog is deprecated and will be removed in Linux 3.3");
 		} else if (!strcmp(this_char, MNTOPT_DISCARD)) {
 			mp->m_flags |= XFS_MOUNT_DISCARD;
 		} else if (!strcmp(this_char, MNTOPT_NODISCARD)) {
@@ -877,33 +879,17 @@ xfs_log_inode(
 	struct xfs_trans	*tp;
 	int			error;
 
-	xfs_iunlock(ip, XFS_ILOCK_SHARED);
 	tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
 	error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
-
 	if (error) {
 		xfs_trans_cancel(tp, 0);
-		/* we need to return with the lock hold shared */
-		xfs_ilock(ip, XFS_ILOCK_SHARED);
 		return error;
 	}
 
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
-
-	/*
-	 * Note - it's possible that we might have pushed ourselves out of the
-	 * way during trans_reserve which would flush the inode.  But there's
-	 * no guarantee that the inode buffer has actually gone out yet (it's
-	 * delwri).  Plus the buffer could be pinned anyway if it's part of
-	 * an inode in another recent transaction.  So we play it safe and
-	 * fire off the transaction anyway.
-	 */
-	xfs_trans_ijoin(tp, ip);
+	xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-	error = xfs_trans_commit(tp, 0);
-	xfs_ilock_demote(ip, XFS_ILOCK_EXCL);
-
-	return error;
+	return xfs_trans_commit(tp, 0);
 }
 
 STATIC int
@@ -918,7 +904,9 @@ xfs_fs_write_inode(
 	trace_xfs_write_inode(ip);
 
 	if (XFS_FORCED_SHUTDOWN(mp))
-		return XFS_ERROR(EIO);
+		return -XFS_ERROR(EIO);
+	if (!ip->i_update_core)
+		return 0;
 
 	if (wbc->sync_mode == WB_SYNC_ALL) {
 		/*
@@ -929,12 +917,10 @@ xfs_fs_write_inode(
 		 * of synchronous log foces dramatically.
 		 */
 		xfs_ioend_wait(ip);
-		xfs_ilock(ip, XFS_ILOCK_SHARED);
-		if (ip->i_update_core) {
-			error = xfs_log_inode(ip);
-			if (error)
-				goto out_unlock;
-		}
+		error = xfs_log_inode(ip);
+		if (error)
+			goto out;
+		return 0;
 	} else {
 		/*
 		 * We make this non-blocking if the inode is contended, return
@@ -1666,24 +1652,13 @@ xfs_init_workqueues(void)
 	 */
 	xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_CPU_INTENSIVE, 8);
 	if (!xfs_syncd_wq)
-		goto out;
-
-	xfs_ail_wq = alloc_workqueue("xfsail", WQ_CPU_INTENSIVE, 8);
-	if (!xfs_ail_wq)
-		goto out_destroy_syncd;
-
+		return -ENOMEM;
 	return 0;
-
-out_destroy_syncd:
-	destroy_workqueue(xfs_syncd_wq);
-out:
-	return -ENOMEM;
 }
 
 STATIC void
 xfs_destroy_workqueues(void)
 {
-	destroy_workqueue(xfs_ail_wq);
 	destroy_workqueue(xfs_syncd_wq);
 }
 
diff --git a/fs/xfs/linux-2.6/xfs_super.h b/fs/xfs/xfs_super.h
index 50a3266c999e..50a3266c999e 100644
--- a/fs/xfs/linux-2.6/xfs_super.h
+++ b/fs/xfs/xfs_super.h
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/xfs_sync.c
index e4c938afb910..4604f90f86a3 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/xfs_sync.c
@@ -332,7 +332,7 @@ xfs_sync_fsdata(
 	 * between there and here.
 	 */
 	bp = xfs_getsb(mp, 0);
-	if (XFS_BUF_ISPINNED(bp))
+	if (xfs_buf_ispinned(bp))
 		xfs_log_force(mp, 0);
 
 	return xfs_bwrite(mp, bp);
diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/xfs_sync.h
index 941202e7ac6e..941202e7ac6e 100644
--- a/fs/xfs/linux-2.6/xfs_sync.h
+++ b/fs/xfs/xfs_sync.h
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c
index ee2d2adaa438..ee2d2adaa438 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.c
+++ b/fs/xfs/xfs_sysctl.c
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h
index b9937d450f8e..b9937d450f8e 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.h
+++ b/fs/xfs/xfs_sysctl.h
diff --git a/fs/xfs/linux-2.6/xfs_trace.c b/fs/xfs/xfs_trace.c
index 88d25d4aa56e..9010ce885e6a 100644
--- a/fs/xfs/linux-2.6/xfs_trace.c
+++ b/fs/xfs/xfs_trace.c
@@ -43,8 +43,8 @@
 #include "xfs_quota.h"
 #include "xfs_iomap.h"
 #include "xfs_aops.h"
-#include "quota/xfs_dquot_item.h"
-#include "quota/xfs_dquot.h"
+#include "xfs_dquot_item.h"
+#include "xfs_dquot.h"
 #include "xfs_log_recover.h"
 #include "xfs_inode_item.h"
 
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/xfs_trace.h
index 690fc7a7bd72..690fc7a7bd72 100644
--- a/fs/xfs/linux-2.6/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 06a9759b6352..53597f4db9b5 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -350,7 +350,7 @@ typedef struct xfs_item_ops {
 	void (*iop_unlock)(xfs_log_item_t *);
 	xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
 	void (*iop_push)(xfs_log_item_t *);
-	void (*iop_pushbuf)(xfs_log_item_t *);
+	bool (*iop_pushbuf)(xfs_log_item_t *);
 	void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
 } xfs_item_ops_t;
 
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index 43233e92f0f6..3a1e7ca54c2d 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -28,8 +28,6 @@
 #include "xfs_trans_priv.h"
 #include "xfs_error.h"
 
-struct workqueue_struct	*xfs_ail_wq;	/* AIL workqueue */
-
 #ifdef DEBUG
 /*
  * Check that the list is sorted as it should be.
@@ -299,7 +297,7 @@ xfs_trans_ail_cursor_last(
  * Splice the log item list into the AIL at the given LSN. We splice to the
  * tail of the given LSN to maintain insert order for push traversals. The
  * cursor is optional, allowing repeated updates to the same LSN to avoid
- * repeated traversals.
+ * repeated traversals.  This should not be called with an empty list.
  */
 static void
 xfs_ail_splice(
@@ -308,50 +306,39 @@ xfs_ail_splice(
 	struct list_head	*list,
 	xfs_lsn_t		lsn)
 {
-	struct xfs_log_item	*lip = cur ? cur->item : NULL;
-	struct xfs_log_item	*next_lip;
+	struct xfs_log_item	*lip;
+
+	ASSERT(!list_empty(list));
 
 	/*
-	 * Get a new cursor if we don't have a placeholder or the existing one
-	 * has been invalidated.
+	 * Use the cursor to determine the insertion point if one is
+	 * provided.  If not, or if the one we got is not valid,
+	 * find the place in the AIL where the items belong.
 	 */
-	if (!lip || (__psint_t)lip & 1) {
+	lip = cur ? cur->item : NULL;
+	if (!lip || (__psint_t) lip & 1)
 		lip = __xfs_trans_ail_cursor_last(ailp, lsn);
 
-		if (!lip) {
-			/* The list is empty, so just splice and return.  */
-			if (cur)
-				cur->item = NULL;
-			list_splice(list, &ailp->xa_ail);
-			return;
-		}
-	}
+	/*
+	 * If a cursor is provided, we know we're processing the AIL
+	 * in lsn order, and future items to be spliced in will
+	 * follow the last one being inserted now.  Update the
+	 * cursor to point to that last item, now while we have a
+	 * reliable pointer to it.
+	 */
+	if (cur)
+		cur->item = list_entry(list->prev, struct xfs_log_item, li_ail);
 
 	/*
-	 * Our cursor points to the item we want to insert _after_, so we have
-	 * to update the cursor to point to the end of the list we are splicing
-	 * in so that it points to the correct location for the next splice.
-	 * i.e. before the splice
-	 *
-	 *  lsn -> lsn -> lsn + x -> lsn + x ...
-	 *          ^
-	 *          | cursor points here
-	 *
-	 * After the splice we have:
-	 *
-	 *  lsn -> lsn -> lsn -> lsn -> .... -> lsn -> lsn + x -> lsn + x ...
-	 *          ^                            ^
-	 *          | cursor points here         | needs to move here
-	 *
-	 * So we set the cursor to the last item in the list to be spliced
-	 * before we execute the splice, resulting in the cursor pointing to
-	 * the correct item after the splice occurs.
+	 * Finally perform the splice.  Unless the AIL was empty,
+	 * lip points to the item in the AIL _after_ which the new
+	 * items should go.  If lip is null the AIL was empty, so
+	 * the new items go at the head of the AIL.
 	 */
-	if (cur) {
-		next_lip = list_entry(list->prev, struct xfs_log_item, li_ail);
-		cur->item = next_lip;
-	}
-	list_splice(list, &lip->li_ail);
+	if (lip)
+		list_splice(list, &lip->li_ail);
+	else
+		list_splice(list, &ailp->xa_ail);
 }
 
 /*
@@ -367,16 +354,10 @@ xfs_ail_delete(
 	xfs_trans_ail_cursor_clear(ailp, lip);
 }
 
-/*
- * xfs_ail_worker does the work of pushing on the AIL. It will requeue itself
- * to run at a later time if there is more work to do to complete the push.
- */
-STATIC void
-xfs_ail_worker(
-	struct work_struct	*work)
+static long
+xfsaild_push(
+	struct xfs_ail		*ailp)
 {
-	struct xfs_ail		*ailp = container_of(to_delayed_work(work),
-					struct xfs_ail, xa_work);
 	xfs_mount_t		*mp = ailp->xa_mount;
 	struct xfs_ail_cursor	cur;
 	xfs_log_item_t		*lip;
@@ -438,8 +419,13 @@ xfs_ail_worker(
 
 		case XFS_ITEM_PUSHBUF:
 			XFS_STATS_INC(xs_push_ail_pushbuf);
-			IOP_PUSHBUF(lip);
-			ailp->xa_last_pushed_lsn = lsn;
+
+			if (!IOP_PUSHBUF(lip)) {
+				stuck++;
+				flush_log = 1;
+			} else {
+				ailp->xa_last_pushed_lsn = lsn;
+			}
 			push_xfsbufd = 1;
 			break;
 
@@ -451,7 +437,6 @@ xfs_ail_worker(
 
 		case XFS_ITEM_LOCKED:
 			XFS_STATS_INC(xs_push_ail_locked);
-			ailp->xa_last_pushed_lsn = lsn;
 			stuck++;
 			break;
 
@@ -512,20 +497,6 @@ out_done:
 		/* We're past our target or empty, so idle */
 		ailp->xa_last_pushed_lsn = 0;
 
-		/*
-		 * We clear the XFS_AIL_PUSHING_BIT first before checking
-		 * whether the target has changed. If the target has changed,
-		 * this pushes the requeue race directly onto the result of the
-		 * atomic test/set bit, so we are guaranteed that either the
-		 * the pusher that changed the target or ourselves will requeue
-		 * the work (but not both).
-		 */
-		clear_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags);
-		smp_rmb();
-		if (XFS_LSN_CMP(ailp->xa_target, target) == 0 ||
-		    test_and_set_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags))
-			return;
-
 		tout = 50;
 	} else if (XFS_LSN_CMP(lsn, target) >= 0) {
 		/*
@@ -548,9 +519,30 @@ out_done:
 		tout = 20;
 	}
 
-	/* There is more to do, requeue us.  */
-	queue_delayed_work(xfs_syncd_wq, &ailp->xa_work,
-					msecs_to_jiffies(tout));
+	return tout;
+}
+
+static int
+xfsaild(
+	void		*data)
+{
+	struct xfs_ail	*ailp = data;
+	long		tout = 0;	/* milliseconds */
+
+	while (!kthread_should_stop()) {
+		if (tout && tout <= 20)
+			__set_current_state(TASK_KILLABLE);
+		else
+			__set_current_state(TASK_INTERRUPTIBLE);
+		schedule_timeout(tout ?
+				 msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT);
+
+		try_to_freeze();
+
+		tout = xfsaild_push(ailp);
+	}
+
+	return 0;
 }
 
 /*
@@ -585,8 +577,9 @@ xfs_ail_push(
 	 */
 	smp_wmb();
 	xfs_trans_ail_copy_lsn(ailp, &ailp->xa_target, &threshold_lsn);
-	if (!test_and_set_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags))
-		queue_delayed_work(xfs_syncd_wq, &ailp->xa_work, 0);
+	smp_wmb();
+
+	wake_up_process(ailp->xa_task);
 }
 
 /*
@@ -682,6 +675,7 @@ xfs_trans_ail_update_bulk(
 	int			i;
 	LIST_HEAD(tmp);
 
+	ASSERT(nr_items > 0);		/* Not required, but true. */
 	mlip = xfs_ail_min(ailp);
 
 	for (i = 0; i < nr_items; i++) {
@@ -701,7 +695,8 @@ xfs_trans_ail_update_bulk(
 		list_add(&lip->li_ail, &tmp);
 	}
 
-	xfs_ail_splice(ailp, cur, &tmp, lsn);
+	if (!list_empty(&tmp))
+		xfs_ail_splice(ailp, cur, &tmp, lsn);
 
 	if (!mlip_changed) {
 		spin_unlock(&ailp->xa_lock);
@@ -822,9 +817,18 @@ xfs_trans_ail_init(
 	INIT_LIST_HEAD(&ailp->xa_ail);
 	INIT_LIST_HEAD(&ailp->xa_cursors);
 	spin_lock_init(&ailp->xa_lock);
-	INIT_DELAYED_WORK(&ailp->xa_work, xfs_ail_worker);
+
+	ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild/%s",
+			ailp->xa_mount->m_fsname);
+	if (IS_ERR(ailp->xa_task))
+		goto out_free_ailp;
+
 	mp->m_ail = ailp;
 	return 0;
+
+out_free_ailp:
+	kmem_free(ailp);
+	return ENOMEM;
 }
 
 void
@@ -833,6 +837,6 @@ xfs_trans_ail_destroy(
 {
 	struct xfs_ail	*ailp = mp->m_ail;
 
-	cancel_delayed_work_sync(&ailp->xa_work);
+	kthread_stop(ailp->xa_task);
 	kmem_free(ailp);
 }
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index 15584fc3ed7d..137e2b9e2948 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -54,7 +54,7 @@ xfs_trans_buf_item_match(
 	list_for_each_entry(lidp, &tp->t_items, lid_trans) {
 		blip = (struct xfs_buf_log_item *)lidp->lid_item;
 		if (blip->bli_item.li_type == XFS_LI_BUF &&
-		    XFS_BUF_TARGET(blip->bli_buf) == target &&
+		    blip->bli_buf->b_target == target &&
 		    XFS_BUF_ADDR(blip->bli_buf) == blkno &&
 		    XFS_BUF_COUNT(blip->bli_buf) == len)
 			return blip->bli_buf;
@@ -80,7 +80,6 @@ _xfs_trans_bjoin(
 {
 	struct xfs_buf_log_item	*bip;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == NULL);
 
 	/*
@@ -194,7 +193,7 @@ xfs_trans_get_buf(xfs_trans_t	*tp,
 		return NULL;
 	}
 
-	ASSERT(!XFS_BUF_GETERROR(bp));
+	ASSERT(!bp->b_error);
 
 	_xfs_trans_bjoin(tp, bp, 1);
 	trace_xfs_trans_get_buf(bp->b_fspriv);
@@ -293,10 +292,10 @@ xfs_trans_read_buf(
 			return (flags & XBF_TRYLOCK) ?
 					EAGAIN : XFS_ERROR(ENOMEM);
 
-		if (XFS_BUF_GETERROR(bp) != 0) {
+		if (bp->b_error) {
+			error = bp->b_error;
 			xfs_ioerror_alert("xfs_trans_read_buf", mp,
 					  bp, blkno);
-			error = XFS_BUF_GETERROR(bp);
 			xfs_buf_relse(bp);
 			return error;
 		}
@@ -330,7 +329,7 @@ xfs_trans_read_buf(
 		ASSERT(xfs_buf_islocked(bp));
 		ASSERT(bp->b_transp == tp);
 		ASSERT(bp->b_fspriv != NULL);
-		ASSERT((XFS_BUF_ISERROR(bp)) == 0);
+		ASSERT(!bp->b_error);
 		if (!(XFS_BUF_ISDONE(bp))) {
 			trace_xfs_trans_read_buf_io(bp, _RET_IP_);
 			ASSERT(!XFS_BUF_ISASYNC(bp));
@@ -386,10 +385,9 @@ xfs_trans_read_buf(
 		return (flags & XBF_TRYLOCK) ?
 					0 : XFS_ERROR(ENOMEM);
 	}
-	if (XFS_BUF_GETERROR(bp) != 0) {
-	    XFS_BUF_SUPER_STALE(bp);
-		error = XFS_BUF_GETERROR(bp);
-
+	if (bp->b_error) {
+		error = bp->b_error;
+		XFS_BUF_SUPER_STALE(bp);
 		xfs_ioerror_alert("xfs_trans_read_buf", mp,
 				  bp, blkno);
 		if (tp->t_flags & XFS_TRANS_DIRTY)
@@ -430,7 +428,7 @@ shutdown_abort:
 	if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp))
 		xfs_notice(mp, "about to pop assert, bp == 0x%p", bp);
 #endif
-	ASSERT((XFS_BUF_BFLAGS(bp) & (XBF_STALE|XBF_DELWRI)) !=
+	ASSERT((bp->b_flags & (XBF_STALE|XBF_DELWRI)) !=
 				     (XBF_STALE|XBF_DELWRI));
 
 	trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
@@ -581,7 +579,6 @@ xfs_trans_bhold(xfs_trans_t	*tp,
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
@@ -602,7 +599,6 @@ xfs_trans_bhold_release(xfs_trans_t	*tp,
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
@@ -631,7 +627,6 @@ xfs_trans_log_buf(xfs_trans_t	*tp,
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT((first <= last) && (last < XFS_BUF_COUNT(bp)));
@@ -702,7 +697,6 @@ xfs_trans_binval(
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(atomic_read(&bip->bli_refcount) > 0);
@@ -774,7 +768,6 @@ xfs_trans_inode_buf(
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(atomic_read(&bip->bli_refcount) > 0);
@@ -798,7 +791,6 @@ xfs_trans_stale_inode_buf(
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(atomic_read(&bip->bli_refcount) > 0);
@@ -823,7 +815,6 @@ xfs_trans_inode_alloc_buf(
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(atomic_read(&bip->bli_refcount) > 0);
@@ -851,7 +842,6 @@ xfs_trans_dquot_buf(
 {
 	xfs_buf_log_item_t	*bip = bp->b_fspriv;
 
-	ASSERT(XFS_BUF_ISBUSY(bp));
 	ASSERT(bp->b_transp == tp);
 	ASSERT(bip != NULL);
 	ASSERT(type == XFS_BLF_UDQUOT_BUF ||
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index 4d00ee67792d..4d00ee67792d 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h
index 212946b97239..22750b5e4a8f 100644
--- a/fs/xfs/xfs_trans_priv.h
+++ b/fs/xfs/xfs_trans_priv.h
@@ -64,23 +64,17 @@ struct xfs_ail_cursor {
  */
 struct xfs_ail {
 	struct xfs_mount	*xa_mount;
+	struct task_struct	*xa_task;
 	struct list_head	xa_ail;
 	xfs_lsn_t		xa_target;
 	struct list_head	xa_cursors;
 	spinlock_t		xa_lock;
-	struct delayed_work	xa_work;
 	xfs_lsn_t		xa_last_pushed_lsn;
-	unsigned long		xa_flags;
 };
 
-#define XFS_AIL_PUSHING_BIT	0
-
 /*
  * From xfs_trans_ail.c
  */
-
-extern struct workqueue_struct	*xfs_ail_wq;	/* AIL workqueue */
-
 void	xfs_trans_ail_update_bulk(struct xfs_ail *ailp,
 				struct xfs_ail_cursor *cur,
 				struct xfs_log_item **log_items, int nr_items,
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/xfs_vnode.h
index 7c220b4227bc..7c220b4227bc 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/fs/xfs/xfs_vnode.h
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 9322e13f0c63..51fc429527bc 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -83,7 +83,9 @@ xfs_readlink_bmap(
 
 		bp = xfs_buf_read(mp->m_ddev_targp, d, BTOBB(byte_cnt),
 				  XBF_LOCK | XBF_MAPPED | XBF_DONT_BLOCK);
-		error = XFS_BUF_GETERROR(bp);
+		if (!bp)
+			return XFS_ERROR(ENOMEM);
+		error = bp->b_error;
 		if (error) {
 			xfs_ioerror_alert("xfs_readlink",
 				  ip->i_mount, bp, XFS_BUF_ADDR(bp));
@@ -94,7 +96,7 @@ xfs_readlink_bmap(
 			byte_cnt = pathlen;
 		pathlen -= byte_cnt;
 
-		memcpy(link, XFS_BUF_PTR(bp), byte_cnt);
+		memcpy(link, bp->b_addr, byte_cnt);
 		xfs_buf_relse(bp);
 	}
 
@@ -1648,13 +1650,13 @@ xfs_symlink(
 			byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount);
 			bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d,
 					       BTOBB(byte_cnt), 0);
-			ASSERT(bp && !XFS_BUF_GETERROR(bp));
+			ASSERT(!xfs_buf_geterror(bp));
 			if (pathlen < byte_cnt) {
 				byte_cnt = pathlen;
 			}
 			pathlen -= byte_cnt;
 
-			memcpy(XFS_BUF_PTR(bp), cur_chunk, byte_cnt);
+			memcpy(bp->b_addr, cur_chunk, byte_cnt);
 			cur_chunk += byte_cnt;
 
 			xfs_trans_log_buf(tp, bp, 0, byte_cnt - 1);
@@ -1999,7 +2001,7 @@ xfs_zero_remaining_bytes(
 					  mp, bp, XFS_BUF_ADDR(bp));
 			break;
 		}
-		memset(XFS_BUF_PTR(bp) +
+		memset(bp->b_addr +
 			(offset - XFS_FSB_TO_B(mp, imap.br_startoff)),
 		      0, lastoffset - offset + 1);
 		XFS_BUF_UNDONE(bp);
diff --git a/fs/xfs/linux-2.6/xfs_xattr.c b/fs/xfs/xfs_xattr.c
index 87d3e03878c8..87d3e03878c8 100644
--- a/fs/xfs/linux-2.6/xfs_xattr.c
+++ b/fs/xfs/xfs_xattr.c