Merge branch 'work.dcache2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull dcache and mountpoint updates from Al Viro:
 "Saner handling of refcounts to mountpoints.

  Transfer the counting reference from struct mount ->mnt_mountpoint
  over to struct mountpoint ->m_dentry. That allows us to get rid of the
  convoluted games with ordering of mount shutdowns.

  The cost is in teaching shrink_dcache_{parent,for_umount} to cope with
  mixed-filesystem shrink lists, which we'll also need for the Slab
  Movable Objects patchset"

* 'work.dcache2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  switch the remnants of releasing the mountpoint away from fs_pin
  get rid of detach_mnt()
  make struct mountpoint bear the dentry reference to mountpoint, not struct mount
  Teach shrink_dcache_parent() to cope with mixed-filesystem shrink lists
  fs/namespace.c: shift put_mountpoint() to callers of unhash_mnt()
  __detach_mounts(): lookup_mountpoint() can't return ERR_PTR() anymore
  nfs: dget_parent() never returns NULL
  ceph: don't open-code the check for dead lockref

1 files changed, 2 insertions, 4 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 3683d2b1cc8e..628631e2e34f 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -457,10 +457,8 @@ int nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 		struct dentry *pd_dentry;
 
 		pd_dentry = dget_parent(dentry);
-		if (pd_dentry != NULL) {
-			nfs_zap_caches(d_inode(pd_dentry));
-			dput(pd_dentry);
-		}
+		nfs_zap_caches(d_inode(pd_dentry));
+		dput(pd_dentry);
 	}
 	nfs_free_fattr(res.fattr);
 	if (error < 0)