Oleg Nesterov <o...@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

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