bfs: remove unnecessary dentry_unhash on dir rename

Bfs does not have problems with references to unlinked directories.

CC: [email protected]
Signed-off-by: Sage Weil <[email protected]>
Signed-off-by: Al Viro <[email protected]>

Author: liewegas

fs/bfs/dir.c

@@ -224,9 +224,6 @@ static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	struct bfs_sb_info *info;
 	int error = -ENOENT;
 
-	if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
-		dentry_unhash(new_dentry);
-
 	old_bh = new_bh = NULL;
 	old_inode = old_dentry->d_inode;
 	if (S_ISDIR(old_inode->i_mode))