vfs: push dentry_unhash on rmdir into file systems

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

This does not change behavior for any in-tree file systems.

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, 2 insertions, 0 deletions

diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index ed5c5d496ee9..7a5ad9762de9 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -296,6 +296,8 @@ static int ext2_rmdir (struct inode * dir, struct dentry *dentry)
         struct inode * inode = dentry->d_inode;
         int err = -ENOTEMPTY;
 
+        dentry_unhash(dentry);
+
         if (ext2_empty_dir(inode)) {
                 err = ext2_unlink(dir, dentry);
                 if (!err) {