f2fs: fix i_name during f2fs_sync_file

As similar as the i_pino fix, i_name also should be fixed when i_nlink is 1.

The errorneous scenario is like this.

1. touch test1
2. link test1 test2
3. unlink test2
4. fsync test1

After this, i_name should be test1.

CC: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 65ca3b3e5806..c2deb27ffb72 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -112,11 +112,13 @@ static int get_parent_ino(struct inode *inode, nid_t *pino)
         if (!dentry)
                 return 0;
 
-        inode = igrab(dentry->d_parent->d_inode);
-        dput(dentry);
+        if (update_dent_inode(inode, &dentry->d_name)) {
+                dput(dentry);
+                return 0;
+        }
 
-        *pino = inode->i_ino;
-        iput(inode);
+        *pino = parent_ino(dentry);
+        dput(dentry);
         return 1;
 }