Merge tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "This series adds two ioctls to control cached data and fragmented
  files.  Most of the rest fixes missing error cases and bugs that we
  have not covered so far.  Summary:

  Enhancements:
   - support an ioctl to execute online file defragmentation
   - support an ioctl to flush cached data
   - speed up shrinking of extent_cache entries
   - handle broken superblock
   - refector dirty inode management infra
   - revisit f2fs_map_blocks to handle more cases
   - reduce global lock coverage
   - add detecting user's idle time

  Major bug fixes:
   - fix data race condition on cached nat entries
   - fix error cases of volatile and atomic writes"

* tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (87 commits)
  f2fs: should unset atomic flag after successful commit
  f2fs: fix wrong memory condition check
  f2fs: monitor the number of background checkpoint
  f2fs: detect idle time depending on user behavior
  f2fs: introduce time and interval facility
  f2fs: skip releasing nodes in chindless extent tree
  f2fs: use atomic type for node count in extent tree
  f2fs: recognize encrypted data in f2fs_fiemap
  f2fs: clean up f2fs_balance_fs
  f2fs: remove redundant calls
  f2fs: avoid unnecessary f2fs_balance_fs calls
  f2fs: check the page status filled from disk
  f2fs: introduce __get_node_page to reuse common code
  f2fs: check node id earily when readaheading node page
  f2fs: read isize while holding i_mutex in fiemap
  Revert "f2fs: check the node block address of newly allocated nid"
  f2fs: cover more area with nat_tree_lock
  f2fs: introduce max_file_blocks in sbi
  f2fs crypto: check CONFIG_F2FS_FS_XATTR for encrypted symlink
  f2fs: introduce zombie list for fast shrinking extent trees
  ...

1 files changed, 39 insertions, 20 deletions

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index e7587fce1b80..6f944e5eb76e 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -60,7 +60,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 	if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode))
 		f2fs_set_encrypted_inode(inode);
 
-	if (f2fs_may_inline_data(inode))
+	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
 		set_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
 	if (f2fs_may_inline_dentry(inode))
 		set_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
@@ -128,8 +128,6 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 	nid_t ino = 0;
 	int err;
 
-	f2fs_balance_fs(sbi);
-
 	inode = f2fs_new_inode(dir, mode);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
@@ -142,6 +140,8 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 	inode->i_mapping->a_ops = &f2fs_dblock_aops;
 	ino = inode->i_ino;
 
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 	err = f2fs_add_link(dentry, inode);
 	if (err)
@@ -172,7 +172,7 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
 		!f2fs_is_child_context_consistent_with_parent(dir, inode))
 		return -EPERM;
 
-	f2fs_balance_fs(sbi);
+	f2fs_balance_fs(sbi, true);
 
 	inode->i_ctime = CURRENT_TIME;
 	ihold(inode);
@@ -214,6 +214,15 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino)
 	struct page *page;
 	int err = 0;
 
+	if (f2fs_readonly(sbi->sb)) {
+		f2fs_msg(sbi->sb, KERN_INFO,
+			"skip recovering inline_dots inode (ino:%lu, pino:%u) "
+			"in readonly mountpoint", dir->i_ino, pino);
+		return 0;
+	}
+
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 
 	de = f2fs_find_entry(dir, &dot, &page);
@@ -288,12 +297,13 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 	int err = -ENOENT;
 
 	trace_f2fs_unlink_enter(dir, dentry);
-	f2fs_balance_fs(sbi);
 
 	de = f2fs_find_entry(dir, &dentry->d_name, &page);
 	if (!de)
 		goto fail;
 
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 	err = acquire_orphan_inode(sbi);
 	if (err) {
@@ -344,8 +354,6 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 	if (len > dir->i_sb->s_blocksize)
 		return -ENAMETOOLONG;
 
-	f2fs_balance_fs(sbi);
-
 	inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
@@ -357,6 +365,8 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
 	inode_nohighmem(inode);
 	inode->i_mapping->a_ops = &f2fs_dblock_aops;
 
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 	err = f2fs_add_link(dentry, inode);
 	if (err)
@@ -437,8 +447,6 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 	struct inode *inode;
 	int err;
 
-	f2fs_balance_fs(sbi);
-
 	inode = f2fs_new_inode(dir, S_IFDIR | mode);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
@@ -448,6 +456,8 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 	inode->i_mapping->a_ops = &f2fs_dblock_aops;
 	mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
 
+	f2fs_balance_fs(sbi, true);
+
 	set_inode_flag(F2FS_I(inode), FI_INC_LINK);
 	f2fs_lock_op(sbi);
 	err = f2fs_add_link(dentry, inode);
@@ -485,8 +495,6 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 	struct inode *inode;
 	int err = 0;
 
-	f2fs_balance_fs(sbi);
-
 	inode = f2fs_new_inode(dir, mode);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
@@ -494,6 +502,8 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
 	init_special_inode(inode, inode->i_mode, rdev);
 	inode->i_op = &f2fs_special_inode_operations;
 
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 	err = f2fs_add_link(dentry, inode);
 	if (err)
@@ -520,9 +530,6 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 	struct inode *inode;
 	int err;
 
-	if (!whiteout)
-		f2fs_balance_fs(sbi);
-
 	inode = f2fs_new_inode(dir, mode);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
@@ -536,6 +543,8 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 		inode->i_mapping->a_ops = &f2fs_dblock_aops;
 	}
 
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 	err = acquire_orphan_inode(sbi);
 	if (err)
@@ -608,8 +617,6 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		goto out;
 	}
 
-	f2fs_balance_fs(sbi);
-
 	old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 	if (!old_entry)
 		goto out;
@@ -639,6 +646,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		if (!new_entry)
 			goto out_whiteout;
 
+		f2fs_balance_fs(sbi, true);
+
 		f2fs_lock_op(sbi);
 
 		err = acquire_orphan_inode(sbi);
@@ -670,6 +679,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		update_inode_page(old_inode);
 		update_inode_page(new_inode);
 	} else {
+		f2fs_balance_fs(sbi, true);
+
 		f2fs_lock_op(sbi);
 
 		err = f2fs_add_link(new_dentry, old_inode);
@@ -767,8 +778,6 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 								new_inode)))
 		return -EPERM;
 
-	f2fs_balance_fs(sbi);
-
 	old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 	if (!old_entry)
 		goto out;
@@ -811,6 +820,8 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 			goto out_new_dir;
 	}
 
+	f2fs_balance_fs(sbi, true);
+
 	f2fs_lock_op(sbi);
 
 	err = update_dent_inode(old_inode, new_inode, &new_dentry->d_name);
@@ -933,7 +944,7 @@ static const char *f2fs_encrypted_get_link(struct dentry *dentry,
 {
 	struct page *cpage = NULL;
 	char *caddr, *paddr = NULL;
-	struct f2fs_str cstr;
+	struct f2fs_str cstr = FSTR_INIT(NULL, 0);
 	struct f2fs_str pstr = FSTR_INIT(NULL, 0);
 	struct f2fs_encrypted_symlink_data *sd;
 	loff_t size = min_t(loff_t, i_size_read(inode), PAGE_SIZE - 1);
@@ -956,6 +967,12 @@ static const char *f2fs_encrypted_get_link(struct dentry *dentry,
 	/* Symlink is encrypted */
 	sd = (struct f2fs_encrypted_symlink_data *)caddr;
 	cstr.len = le16_to_cpu(sd->len);
+
+	/* this is broken symlink case */
+	if (unlikely(cstr.len == 0)) {
+		res = -ENOENT;
+		goto errout;
+	}
 	cstr.name = kmalloc(cstr.len, GFP_NOFS);
 	if (!cstr.name) {
 		res = -ENOMEM;
@@ -964,7 +981,7 @@ static const char *f2fs_encrypted_get_link(struct dentry *dentry,
 	memcpy(cstr.name, sd->encrypted_path, cstr.len);
 
 	/* this is broken symlink case */
-	if (cstr.name[0] == 0 && cstr.len == 0) {
+	if (unlikely(cstr.name[0] == 0)) {
 		res = -ENOENT;
 		goto errout;
 	}
@@ -1005,10 +1022,12 @@ const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
 	.get_link       = f2fs_encrypted_get_link,
 	.getattr	= f2fs_getattr,
 	.setattr	= f2fs_setattr,
+#ifdef CONFIG_F2FS_FS_XATTR
 	.setxattr	= generic_setxattr,
 	.getxattr	= generic_getxattr,
 	.listxattr	= f2fs_listxattr,
 	.removexattr	= generic_removexattr,
+#endif
 };
 #endif