Merge tag 'locks-v4.18-1' of git://

Pull fasync fix from Jeff Layton:
 "Just a single fix for a deadlock in the fasync handling code that
  Kirill observed while testing.

  The fix is to change the fa_lock to be rwlock_t, and use a read lock
  in kill_fasync_rcu"

* tag 'locks-v4.18-1' of git://
  fasync: Fix deadlock between task-context and interrupt-context kill_fasync()