Oleg Nesterov <oleg at redhat.com> wrote on 10/28/2013 10:17:35 PM: > mb(); // XXXXXXXX: do we really need it? I think yes. Oh, it is hard to argue with feelings. Also, it is easy to be on conservative side and put the barrier here just in case. But I still insist that the barrier is redundant in your example. -- Victor