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/minix/namei.c b/fs/minix/namei.c
index 091626f5577d..f60aed8db9c4 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -192,6 +192,9 @@ static int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
         struct minix_dir_entry * old_de;
         int err = -ENOENT;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_de = minix_find_entry(old_dentry, &old_page);
         if (!old_de)
                 goto out;