restore pinning the victim dentry in vfs_rmdir()/vfs_rename_dir()

We used to get the victim pinned by dentry_unhash() prior to commit
64252c75a219 ("vfs: remove dget() from dentry_unhash()") and ->rmdir()
and ->rename() instances relied on that; most of them don't care, but
ones that used d_delete() themselves do.  As the result, we are getting
rmdir() oopses on NFS now.

Just grab the reference before locking the victim and drop it explicitly
after unlocking, same as vfs_rename_other() does.

Signed-off-by: Al Viro <[email protected]>
Tested-by: Simon Kirby <[email protected]>
Cc: [email protected] (3.0.x)
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions