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

Pull vfs umount_tree() leak fix from Al Viro:
 "Fix braino introduced in 'switch the remnants of releasing the
  mountpoint away from fs_pin'.

  The most visible result is leaking struct mount when mounting btrfs,
  making it impossible to shut down"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix the struct mount leak in umount_tree()