Merge tag 'pull-bcachefs-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull bcachefs locking fix from Al Viro:
 "Fix broken locking in bch2_ioctl_subvolume_destroy()"

* tag 'pull-bcachefs-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  bch2_ioctl_subvolume_destroy(): fix locking
  new helper: user_path_locked_at()