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

Merge branch 'work.autofs' of git://git./linux/kernel/git/viro/vfs

Pull autofs updates from Al Viro:
 "The most interesting part here is getting rid of the last trylock loop
  on dentry->d_lock.

  The ones in fs/dcache.c had been dealt with several years ago, but
  there'd been leftovers in fs/autofs/expire.c"

* 'work.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  autofs_lookup(): hold ->d_lock over playing with ->d_flags
  get rid of autofs_info->active_count
  autofs: simplify get_next_positive_...(), get rid of trylocks