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>

2 files changed, 4 insertions, 0 deletions

diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index 711499040eb6..0c25cea64d24 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -326,6 +326,8 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
         struct fat_slot_info sinfo;
         int err;
 
+        dentry_unhash(dentry);
+
         lock_super(sb);
         /*
          * Check whether the directory is not in use, then check
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index adae3fb7451a..d7b9383bb9c2 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -824,6 +824,8 @@ static int vfat_rmdir(struct inode *dir, struct dentry *dentry)
         struct fat_slot_info sinfo;
         int err;
 
+        dentry_unhash(dentry);
+
         lock_super(sb);
 
         err = fat_dir_empty(inode);