From mboxrd@z Thu Jan  1 00:00:00 1970
From: Josh Triplett <josh@joshtriplett.org>
Subject: Re: [PATCH v3 tip/core/rcu 0/14] Sparse-related updates for 3.13
Date: Fri, 11 Oct 2013 23:53:27 -0700
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To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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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