On Fri, Oct 11, 2013 at 04:16:59PM -0700, Paul E. McKenney wrote:
> Changes from v2:
> 
> o     Switch from rcu_assign_pointer() to ACCESS_ONCE() given that
>       the pointers are all --rcu and already visible to readers,
>       as suggested by Eric Dumazet and Josh Triplett.

Hang on a moment.  Do *none* of these cases need write memory barriers?

- Josh Triplet
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