Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 912 insertions, 0 deletions

diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
new file mode 100644
index 000000000000..53dc658cafa6
--- /dev/null
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -0,0 +1,912 @@
+/*
+ * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA  94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+#include "xfs.h"
+
+#include "xfs_inum.h"
+#include "xfs_log.h"
+#include "xfs_clnt.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_dir.h"
+#include "xfs_dir2.h"
+#include "xfs_alloc.h"
+#include "xfs_dmapi.h"
+#include "xfs_quota.h"
+#include "xfs_mount.h"
+#include "xfs_alloc_btree.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_ialloc_btree.h"
+#include "xfs_btree.h"
+#include "xfs_ialloc.h"
+#include "xfs_attr_sf.h"
+#include "xfs_dir_sf.h"
+#include "xfs_dir2_sf.h"
+#include "xfs_dinode.h"
+#include "xfs_inode.h"
+#include "xfs_bmap.h"
+#include "xfs_bit.h"
+#include "xfs_rtalloc.h"
+#include "xfs_error.h"
+#include "xfs_itable.h"
+#include "xfs_rw.h"
+#include "xfs_acl.h"
+#include "xfs_cap.h"
+#include "xfs_mac.h"
+#include "xfs_attr.h"
+#include "xfs_buf_item.h"
+#include "xfs_utils.h"
+#include "xfs_version.h"
+#include "xfs_ioctl32.h"
+
+#include <linux/namei.h>
+#include <linux/init.h>
+#include <linux/mount.h>
+#include <linux/writeback.h>
+
+STATIC struct quotactl_ops linvfs_qops;
+STATIC struct super_operations linvfs_sops;
+STATIC kmem_zone_t *linvfs_inode_zone;
+
+STATIC struct xfs_mount_args *
+xfs_args_allocate(
+	struct super_block	*sb)
+{
+	struct xfs_mount_args	*args;
+
+	args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
+	args->logbufs = args->logbufsize = -1;
+	strncpy(args->fsname, sb->s_id, MAXNAMELEN);
+
+	/* Copy the already-parsed mount(2) flags we're interested in */
+	if (sb->s_flags & MS_NOATIME)
+		args->flags |= XFSMNT_NOATIME;
+	if (sb->s_flags & MS_DIRSYNC)
+		args->flags |= XFSMNT_DIRSYNC;
+	if (sb->s_flags & MS_SYNCHRONOUS)
+		args->flags |= XFSMNT_WSYNC;
+
+	/* Default to 32 bit inodes on Linux all the time */
+	args->flags |= XFSMNT_32BITINODES;
+
+	return args;
+}
+
+__uint64_t
+xfs_max_file_offset(
+	unsigned int		blockshift)
+{
+	unsigned int		pagefactor = 1;
+	unsigned int		bitshift = BITS_PER_LONG - 1;
+
+	/* Figure out maximum filesize, on Linux this can depend on
+	 * the filesystem blocksize (on 32 bit platforms).
+	 * __block_prepare_write does this in an [unsigned] long...
+	 *      page->index << (PAGE_CACHE_SHIFT - bbits)
+	 * So, for page sized blocks (4K on 32 bit platforms),
+	 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
+	 *      (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
+	 * but for smaller blocksizes it is less (bbits = log2 bsize).
+	 * Note1: get_block_t takes a long (implicit cast from above)
+	 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
+	 * can optionally convert the [unsigned] long from above into
+	 * an [unsigned] long long.
+	 */
+
+#if BITS_PER_LONG == 32
+# if defined(CONFIG_LBD)
+	ASSERT(sizeof(sector_t) == 8);
+	pagefactor = PAGE_CACHE_SIZE;
+	bitshift = BITS_PER_LONG;
+# else
+	pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
+# endif
+#endif
+
+	return (((__uint64_t)pagefactor) << bitshift) - 1;
+}
+
+STATIC __inline__ void
+xfs_set_inodeops(
+	struct inode		*inode)
+{
+	vnode_t			*vp = LINVFS_GET_VP(inode);
+
+	if (vp->v_type == VNON) {
+		vn_mark_bad(vp);
+	} else if (S_ISREG(inode->i_mode)) {
+		inode->i_op = &linvfs_file_inode_operations;
+		inode->i_fop = &linvfs_file_operations;
+		inode->i_mapping->a_ops = &linvfs_aops;
+	} else if (S_ISDIR(inode->i_mode)) {
+		inode->i_op = &linvfs_dir_inode_operations;
+		inode->i_fop = &linvfs_dir_operations;
+	} else if (S_ISLNK(inode->i_mode)) {
+		inode->i_op = &linvfs_symlink_inode_operations;
+		if (inode->i_blocks)
+			inode->i_mapping->a_ops = &linvfs_aops;
+	} else {
+		inode->i_op = &linvfs_file_inode_operations;
+		init_special_inode(inode, inode->i_mode, inode->i_rdev);
+	}
+}
+
+STATIC __inline__ void
+xfs_revalidate_inode(
+	xfs_mount_t		*mp,
+	vnode_t			*vp,
+	xfs_inode_t		*ip)
+{
+	struct inode		*inode = LINVFS_GET_IP(vp);
+
+	inode->i_mode	= (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
+	inode->i_nlink	= ip->i_d.di_nlink;
+	inode->i_uid	= ip->i_d.di_uid;
+	inode->i_gid	= ip->i_d.di_gid;
+	if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
+		inode->i_rdev = 0;
+	} else {
+		xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
+		inode->i_rdev = MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
+	}
+	inode->i_blksize = PAGE_CACHE_SIZE;
+	inode->i_generation = ip->i_d.di_gen;
+	i_size_write(inode, ip->i_d.di_size);
+	inode->i_blocks =
+		XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
+	inode->i_atime.tv_sec	= ip->i_d.di_atime.t_sec;
+	inode->i_atime.tv_nsec	= ip->i_d.di_atime.t_nsec;
+	inode->i_mtime.tv_sec	= ip->i_d.di_mtime.t_sec;
+	inode->i_mtime.tv_nsec	= ip->i_d.di_mtime.t_nsec;
+	inode->i_ctime.tv_sec	= ip->i_d.di_ctime.t_sec;
+	inode->i_ctime.tv_nsec	= ip->i_d.di_ctime.t_nsec;
+	if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
+		inode->i_flags |= S_IMMUTABLE;
+	else
+		inode->i_flags &= ~S_IMMUTABLE;
+	if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
+		inode->i_flags |= S_APPEND;
+	else
+		inode->i_flags &= ~S_APPEND;
+	if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
+		inode->i_flags |= S_SYNC;
+	else
+		inode->i_flags &= ~S_SYNC;
+	if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
+		inode->i_flags |= S_NOATIME;
+	else
+		inode->i_flags &= ~S_NOATIME;
+	vp->v_flag &= ~VMODIFIED;
+}
+
+void
+xfs_initialize_vnode(
+	bhv_desc_t		*bdp,
+	vnode_t			*vp,
+	bhv_desc_t		*inode_bhv,
+	int			unlock)
+{
+	xfs_inode_t		*ip = XFS_BHVTOI(inode_bhv);
+	struct inode		*inode = LINVFS_GET_IP(vp);
+
+	if (!inode_bhv->bd_vobj) {
+		vp->v_vfsp = bhvtovfs(bdp);
+		bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
+		bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
+	}
+
+	/*
+	 * We need to set the ops vectors, and unlock the inode, but if
+	 * we have been called during the new inode create process, it is
+	 * too early to fill in the Linux inode.  We will get called a
+	 * second time once the inode is properly set up, and then we can
+	 * finish our work.
+	 */
+	if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
+		vp->v_type = IFTOVT(ip->i_d.di_mode);
+		xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
+		xfs_set_inodeops(inode);
+	
+		ip->i_flags &= ~XFS_INEW;
+		barrier();
+
+		unlock_new_inode(inode);
+	}
+}
+
+int
+xfs_blkdev_get(
+	xfs_mount_t		*mp,
+	const char		*name,
+	struct block_device	**bdevp)
+{
+	int			error = 0;
+
+	*bdevp = open_bdev_excl(name, 0, mp);
+	if (IS_ERR(*bdevp)) {
+		error = PTR_ERR(*bdevp);
+		printk("XFS: Invalid device [%s], error=%d\n", name, error);
+	}
+
+	return -error;
+}
+
+void
+xfs_blkdev_put(
+	struct block_device	*bdev)
+{
+	if (bdev)
+		close_bdev_excl(bdev);
+}
+
+
+STATIC struct inode *
+linvfs_alloc_inode(
+	struct super_block	*sb)
+{
+	vnode_t			*vp;
+
+	vp = (vnode_t *)kmem_cache_alloc(linvfs_inode_zone, 
+                kmem_flags_convert(KM_SLEEP));
+	if (!vp)
+		return NULL;
+	return LINVFS_GET_IP(vp);
+}
+
+STATIC void
+linvfs_destroy_inode(
+	struct inode		*inode)
+{
+	kmem_cache_free(linvfs_inode_zone, LINVFS_GET_VP(inode));
+}
+
+STATIC void
+init_once(
+	void			*data,
+	kmem_cache_t		*cachep,
+	unsigned long		flags)
+{
+	vnode_t			*vp = (vnode_t *)data;
+
+	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+	    SLAB_CTOR_CONSTRUCTOR)
+		inode_init_once(LINVFS_GET_IP(vp));
+}
+
+STATIC int
+init_inodecache( void )
+{
+	linvfs_inode_zone = kmem_cache_create("linvfs_icache",
+				sizeof(vnode_t), 0, SLAB_RECLAIM_ACCOUNT,
+				init_once, NULL);
+	if (linvfs_inode_zone == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
+STATIC void
+destroy_inodecache( void )
+{
+	if (kmem_cache_destroy(linvfs_inode_zone))
+		printk(KERN_WARNING "%s: cache still in use!\n", __FUNCTION__);
+}
+
+/*
+ * Attempt to flush the inode, this will actually fail
+ * if the inode is pinned, but we dirty the inode again
+ * at the point when it is unpinned after a log write,
+ * since this is when the inode itself becomes flushable. 
+ */
+STATIC int
+linvfs_write_inode(
+	struct inode		*inode,
+	int			sync)
+{
+	vnode_t			*vp = LINVFS_GET_VP(inode);
+	int			error = 0, flags = FLUSH_INODE;
+
+	if (vp) {
+		vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
+		if (sync)
+			flags |= FLUSH_SYNC;
+		VOP_IFLUSH(vp, flags, error);
+		if (error == EAGAIN) {
+			if (sync)
+				VOP_IFLUSH(vp, flags | FLUSH_LOG, error);
+			else
+				error = 0;
+		}
+	}
+
+	return -error;
+}
+
+STATIC void
+linvfs_clear_inode(
+	struct inode		*inode)
+{
+	vnode_t			*vp = LINVFS_GET_VP(inode);
+
+	if (vp) {
+		vn_rele(vp);
+		vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
+		/*
+		 * Do all our cleanup, and remove this vnode.
+		 */
+		vn_remove(vp);
+	}
+}
+
+
+/*
+ * Enqueue a work item to be picked up by the vfs xfssyncd thread.
+ * Doing this has two advantages:
+ * - It saves on stack space, which is tight in certain situations
+ * - It can be used (with care) as a mechanism to avoid deadlocks.
+ * Flushing while allocating in a full filesystem requires both.
+ */
+STATIC void
+xfs_syncd_queue_work(
+	struct vfs	*vfs,
+	void		*data,
+	void		(*syncer)(vfs_t *, void *))
+{
+	vfs_sync_work_t	*work;
+
+	work = kmem_alloc(sizeof(struct vfs_sync_work), KM_SLEEP);
+	INIT_LIST_HEAD(&work->w_list);
+	work->w_syncer = syncer;
+	work->w_data = data;
+	work->w_vfs = vfs;
+	spin_lock(&vfs->vfs_sync_lock);
+	list_add_tail(&work->w_list, &vfs->vfs_sync_list);
+	spin_unlock(&vfs->vfs_sync_lock);
+	wake_up_process(vfs->vfs_sync_task);
+}
+
+/*
+ * Flush delayed allocate data, attempting to free up reserved space
+ * from existing allocations.  At this point a new allocation attempt
+ * has failed with ENOSPC and we are in the process of scratching our
+ * heads, looking about for more room...
+ */
+STATIC void
+xfs_flush_inode_work(
+	vfs_t		*vfs,
+	void		*inode)
+{
+	filemap_flush(((struct inode *)inode)->i_mapping);
+	iput((struct inode *)inode);
+}
+
+void
+xfs_flush_inode(
+	xfs_inode_t	*ip)
+{
+	struct inode	*inode = LINVFS_GET_IP(XFS_ITOV(ip));
+	struct vfs	*vfs = XFS_MTOVFS(ip->i_mount);
+
+	igrab(inode);
+	xfs_syncd_queue_work(vfs, inode, xfs_flush_inode_work);
+	delay(HZ/2);
+}
+
+/*
+ * This is the "bigger hammer" version of xfs_flush_inode_work...
+ * (IOW, "If at first you don't succeed, use a Bigger Hammer").
+ */
+STATIC void
+xfs_flush_device_work(
+	vfs_t		*vfs,
+	void		*inode)
+{
+	sync_blockdev(vfs->vfs_super->s_bdev);
+	iput((struct inode *)inode);
+}
+
+void
+xfs_flush_device(
+	xfs_inode_t	*ip)
+{
+	struct inode	*inode = LINVFS_GET_IP(XFS_ITOV(ip));
+	struct vfs	*vfs = XFS_MTOVFS(ip->i_mount);
+
+	igrab(inode);
+	xfs_syncd_queue_work(vfs, inode, xfs_flush_device_work);
+	delay(HZ/2);
+	xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
+}
+
+#define SYNCD_FLAGS	(SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
+STATIC void
+vfs_sync_worker(
+	vfs_t		*vfsp,
+	void		*unused)
+{
+	int		error;
+
+	if (!(vfsp->vfs_flag & VFS_RDONLY))
+		VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
+	vfsp->vfs_sync_seq++;
+	wmb();
+	wake_up(&vfsp->vfs_wait_single_sync_task);
+}
+
+STATIC int
+xfssyncd(
+	void			*arg)
+{
+	long			timeleft;
+	vfs_t			*vfsp = (vfs_t *) arg;
+	struct list_head	tmp;
+	struct vfs_sync_work	*work, *n;
+
+	daemonize("xfssyncd");
+
+	vfsp->vfs_sync_work.w_vfs = vfsp;
+	vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
+	vfsp->vfs_sync_task = current;
+	wmb();
+	wake_up(&vfsp->vfs_wait_sync_task);
+
+	INIT_LIST_HEAD(&tmp);
+	timeleft = (xfs_syncd_centisecs * HZ) / 100;
+	for (;;) {
+		set_current_state(TASK_INTERRUPTIBLE);
+		timeleft = schedule_timeout(timeleft);
+		/* swsusp */
+		try_to_freeze(PF_FREEZE);
+		if (vfsp->vfs_flag & VFS_UMOUNT)
+			break;
+
+		spin_lock(&vfsp->vfs_sync_lock);
+		/*
+		 * We can get woken by laptop mode, to do a sync -
+		 * that's the (only!) case where the list would be
+		 * empty with time remaining.
+		 */
+		if (!timeleft || list_empty(&vfsp->vfs_sync_list)) {
+			if (!timeleft)
+				timeleft = (xfs_syncd_centisecs * HZ) / 100;
+			INIT_LIST_HEAD(&vfsp->vfs_sync_work.w_list);
+			list_add_tail(&vfsp->vfs_sync_work.w_list,
+					&vfsp->vfs_sync_list);
+		}
+		list_for_each_entry_safe(work, n, &vfsp->vfs_sync_list, w_list)
+			list_move(&work->w_list, &tmp);
+		spin_unlock(&vfsp->vfs_sync_lock);
+
+		list_for_each_entry_safe(work, n, &tmp, w_list) {
+			(*work->w_syncer)(vfsp, work->w_data);
+			list_del(&work->w_list);
+			if (work == &vfsp->vfs_sync_work)
+				continue;
+			kmem_free(work, sizeof(struct vfs_sync_work));
+		}
+	}
+
+	vfsp->vfs_sync_task = NULL;
+	wmb();
+	wake_up(&vfsp->vfs_wait_sync_task);
+
+	return 0;
+}
+
+STATIC int
+linvfs_start_syncd(
+	vfs_t			*vfsp)
+{
+	int			pid;
+
+	pid = kernel_thread(xfssyncd, (void *) vfsp,
+			CLONE_VM | CLONE_FS | CLONE_FILES);
+	if (pid < 0)
+		return -pid;
+	wait_event(vfsp->vfs_wait_sync_task, vfsp->vfs_sync_task);
+	return 0;
+}
+
+STATIC void
+linvfs_stop_syncd(
+	vfs_t			*vfsp)
+{
+	vfsp->vfs_flag |= VFS_UMOUNT;
+	wmb();
+
+	wake_up_process(vfsp->vfs_sync_task);
+	wait_event(vfsp->vfs_wait_sync_task, !vfsp->vfs_sync_task);
+}
+
+STATIC void
+linvfs_put_super(
+	struct super_block	*sb)
+{
+	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	linvfs_stop_syncd(vfsp);
+	VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
+	if (!error)
+		VFS_UNMOUNT(vfsp, 0, NULL, error);
+	if (error) {
+		printk("XFS unmount got error %d\n", error);
+		printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
+		return;
+	}
+
+	vfs_deallocate(vfsp);
+}
+
+STATIC void
+linvfs_write_super(
+	struct super_block	*sb)
+{
+	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	if (sb->s_flags & MS_RDONLY) {
+		sb->s_dirt = 0; /* paranoia */
+		return;
+	}
+	/* Push the log and superblock a little */
+	VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
+	sb->s_dirt = 0;
+}
+
+STATIC int
+linvfs_sync_super(
+	struct super_block	*sb,
+	int			wait)
+{
+	vfs_t		*vfsp = LINVFS_GET_VFS(sb);
+	int		error;
+	int		flags = SYNC_FSDATA;
+
+	if (wait)
+		flags |= SYNC_WAIT;
+
+	VFS_SYNC(vfsp, flags, NULL, error);
+	sb->s_dirt = 0;
+
+	if (unlikely(laptop_mode)) {
+		int	prev_sync_seq = vfsp->vfs_sync_seq;
+
+		/*
+		 * The disk must be active because we're syncing.
+		 * We schedule xfssyncd now (now that the disk is
+		 * active) instead of later (when it might not be).
+		 */
+		wake_up_process(vfsp->vfs_sync_task);
+		/*
+		 * We have to wait for the sync iteration to complete.
+		 * If we don't, the disk activity caused by the sync
+		 * will come after the sync is completed, and that
+		 * triggers another sync from laptop mode.
+		 */
+		wait_event(vfsp->vfs_wait_single_sync_task,
+				vfsp->vfs_sync_seq != prev_sync_seq);
+	}
+
+	return -error;
+}
+
+STATIC int
+linvfs_statfs(
+	struct super_block	*sb,
+	struct kstatfs		*statp)
+{
+	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	VFS_STATVFS(vfsp, statp, NULL, error);
+	return -error;
+}
+
+STATIC int
+linvfs_remount(
+	struct super_block	*sb,
+	int			*flags,
+	char			*options)
+{
+	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
+	struct xfs_mount_args	*args = xfs_args_allocate(sb);
+	int			error;
+
+	VFS_PARSEARGS(vfsp, options, args, 1, error);
+	if (!error)
+		VFS_MNTUPDATE(vfsp, flags, args, error);
+	kmem_free(args, sizeof(*args));
+	return -error;
+}
+
+STATIC void
+linvfs_freeze_fs(
+	struct super_block	*sb)
+{
+	VFS_FREEZE(LINVFS_GET_VFS(sb));
+}
+
+STATIC int
+linvfs_show_options(
+	struct seq_file		*m,
+	struct vfsmount		*mnt)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
+	int			error;
+
+	VFS_SHOWARGS(vfsp, m, error);
+	return error;
+}
+
+STATIC int
+linvfs_getxstate(
+	struct super_block	*sb,
+	struct fs_quota_stat	*fqs)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
+	return -error;
+}
+
+STATIC int
+linvfs_setxstate(
+	struct super_block	*sb,
+	unsigned int		flags,
+	int			op)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
+	return -error;
+}
+
+STATIC int
+linvfs_getxquota(
+	struct super_block	*sb,
+	int			type,
+	qid_t			id,
+	struct fs_disk_quota	*fdq)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
+	int			error, getmode;
+
+	getmode = (type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETQUOTA;
+	VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
+	return -error;
+}
+
+STATIC int
+linvfs_setxquota(
+	struct super_block	*sb,
+	int			type,
+	qid_t			id,
+	struct fs_disk_quota	*fdq)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
+	int			error, setmode;
+
+	setmode = (type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETQLIM;
+	VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
+	return -error;
+}
+
+STATIC int
+linvfs_fill_super(
+	struct super_block	*sb,
+	void			*data,
+	int			silent)
+{
+	vnode_t			*rootvp;
+	struct vfs		*vfsp = vfs_allocate();
+	struct xfs_mount_args	*args = xfs_args_allocate(sb);
+	struct kstatfs		statvfs;
+	int			error, error2;
+
+	vfsp->vfs_super = sb;
+	LINVFS_SET_VFS(sb, vfsp);
+	if (sb->s_flags & MS_RDONLY)
+		vfsp->vfs_flag |= VFS_RDONLY;
+	bhv_insert_all_vfsops(vfsp);
+
+	VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
+	if (error) {
+		bhv_remove_all_vfsops(vfsp, 1);
+		goto fail_vfsop;
+	}
+
+	sb_min_blocksize(sb, BBSIZE);
+#ifdef CONFIG_XFS_EXPORT
+	sb->s_export_op = &linvfs_export_ops;
+#endif
+	sb->s_qcop = &linvfs_qops;
+	sb->s_op = &linvfs_sops;
+
+	VFS_MOUNT(vfsp, args, NULL, error);
+	if (error) {
+		bhv_remove_all_vfsops(vfsp, 1);
+		goto fail_vfsop;
+	}
+
+	VFS_STATVFS(vfsp, &statvfs, NULL, error);
+	if (error)
+		goto fail_unmount;
+
+	sb->s_dirt = 1;
+	sb->s_magic = statvfs.f_type;
+	sb->s_blocksize = statvfs.f_bsize;
+	sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
+	sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
+	sb->s_time_gran = 1;
+	set_posix_acl_flag(sb);
+
+	VFS_ROOT(vfsp, &rootvp, error);
+	if (error)
+		goto fail_unmount;
+
+	sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
+	if (!sb->s_root) {
+		error = ENOMEM;
+		goto fail_vnrele;
+	}
+	if (is_bad_inode(sb->s_root->d_inode)) {
+		error = EINVAL;
+		goto fail_vnrele;
+	}
+	if ((error = linvfs_start_syncd(vfsp)))
+		goto fail_vnrele;
+	vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
+
+	kmem_free(args, sizeof(*args));
+	return 0;
+
+fail_vnrele:
+	if (sb->s_root) {
+		dput(sb->s_root);
+		sb->s_root = NULL;
+	} else {
+		VN_RELE(rootvp);
+	}
+
+fail_unmount:
+	VFS_UNMOUNT(vfsp, 0, NULL, error2);
+
+fail_vfsop:
+	vfs_deallocate(vfsp);
+	kmem_free(args, sizeof(*args));
+	return -error;
+}
+
+STATIC struct super_block *
+linvfs_get_sb(
+	struct file_system_type	*fs_type,
+	int			flags,
+	const char		*dev_name,
+	void			*data)
+{
+	return get_sb_bdev(fs_type, flags, dev_name, data, linvfs_fill_super);
+}
+
+STATIC struct super_operations linvfs_sops = {
+	.alloc_inode		= linvfs_alloc_inode,
+	.destroy_inode		= linvfs_destroy_inode,
+	.write_inode		= linvfs_write_inode,
+	.clear_inode		= linvfs_clear_inode,
+	.put_super		= linvfs_put_super,
+	.write_super		= linvfs_write_super,
+	.sync_fs		= linvfs_sync_super,
+	.write_super_lockfs	= linvfs_freeze_fs,
+	.statfs			= linvfs_statfs,
+	.remount_fs		= linvfs_remount,
+	.show_options		= linvfs_show_options,
+};
+
+STATIC struct quotactl_ops linvfs_qops = {
+	.get_xstate		= linvfs_getxstate,
+	.set_xstate		= linvfs_setxstate,
+	.get_xquota		= linvfs_getxquota,
+	.set_xquota		= linvfs_setxquota,
+};
+
+STATIC struct file_system_type xfs_fs_type = {
+	.owner			= THIS_MODULE,
+	.name			= "xfs",
+	.get_sb			= linvfs_get_sb,
+	.kill_sb		= kill_block_super,
+	.fs_flags		= FS_REQUIRES_DEV,
+};
+
+
+STATIC int __init
+init_xfs_fs( void )
+{
+	int			error;
+	struct sysinfo		si;
+	static char		message[] __initdata = KERN_INFO \
+		XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
+
+	printk(message);
+
+	si_meminfo(&si);
+	xfs_physmem = si.totalram;
+
+	ktrace_init(64);
+
+	error = init_inodecache();
+	if (error < 0)
+		goto undo_inodecache;
+
+	error = pagebuf_init();
+	if (error < 0)
+		goto undo_pagebuf;
+
+	vn_init();
+	xfs_init();
+	uuid_init();
+	vfs_initquota();
+
+	error = register_filesystem(&xfs_fs_type);
+	if (error)
+		goto undo_register;
+	XFS_DM_INIT(&xfs_fs_type);
+	return 0;
+
+undo_register:
+	pagebuf_terminate();
+
+undo_pagebuf:
+	destroy_inodecache();
+
+undo_inodecache:
+	return error;
+}
+
+STATIC void __exit
+exit_xfs_fs( void )
+{
+	vfs_exitquota();
+	XFS_DM_EXIT(&xfs_fs_type);
+	unregister_filesystem(&xfs_fs_type);
+	xfs_cleanup();
+	pagebuf_terminate();
+	destroy_inodecache();
+	ktrace_uninit();
+}
+
+module_init(init_xfs_fs);
+module_exit(exit_xfs_fs);
+
+MODULE_AUTHOR("Silicon Graphics, Inc.");
+MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
+MODULE_LICENSE("GPL");