vfs: push dentry_unhash on rename_dir into file systems

Only a few file systems need this.  Start by pushing it down into each
rename method (except gfs2 and xfs) so that it can be dealt with on a
per-fs basis.

Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c
index 95ef4433d1a3..c368360c35a1 100644
--- a/fs/omfs/dir.c
+++ b/fs/omfs/dir.c
@@ -382,6 +382,9 @@ static int omfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         int err;
 
         if (new_inode) {
+                if (S_ISDIR(new_inode->i_mode))
+                        dentry_unhash(new_dentry);
+
                 /* overwriting existing file/dir */
                 err = omfs_remove(new_dir, new_dentry);
                 if (err)