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From: Josh Triplett <josh@joshtriplett•org>
To: "Paul E. McKenney" <paulmck@linux•vnet.ibm.com>
Cc: linux-kernel@vger•kernel.org, mingo@kernel•org,
	laijs@cn•fujitsu.com, dipankar@in•ibm.com,
	akpm@linux-foundation•org, mathieu.desnoyers@efficios•com,
	niv@us•ibm.com, tglx@linutronix•de, peterz@infradead•org,
	rostedt@goodmis•org, dhowells@redhat•com, edumazet@google•com,
	darren@dvhart•com, fweisbec@gmail•com, sbw@mit•edu,
	fengguang.wu@intel•com, stephen@networkplumber•org,
	davem@davemloft•net, bridge@lists•linux-foundation.org,
	netdev@vger•kernel.org, tgraf@suug•ch, gaofeng@cn•fujitsu.com,
	linux-decnet-user@lists•sourceforge.net, kuznet@ms2•inr.ac.ru,
	jmorris@namei•org, yoshfuji@linux-ipv6•org, kaber@trash•net,
	linville@tuxdriver•com, johannes@sipsolutions•net
Subject: Re: [PATCH v3 tip/core/rcu 0/14] Sparse-related updates for 3.13
Date: Fri, 11 Oct 2013 23:53:27 -0700	[thread overview]
Message-ID: <20131012065326.GG15339@leaf> (raw)
In-Reply-To: <20131011231659.GA28062@linux.vnet.ibm.com>

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

  parent reply	other threads:[~2013-10-12  6:53 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-11 23:16 [PATCH v3 tip/core/rcu 0/14] Sparse-related updates for 3.13 Paul E. McKenney
     [not found] ` <1381533451-29018-1-git-send-email-paulmck@linux.vnet.ibm.com>
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 03/14] bridge: Apply ACCESS_ONCE() to avoid sparse false positive Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 04/14] wireless: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 05/14] decnet: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 06/14] ipv4/ip_socketglue: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 07/14] ipv6/ip6_tunnel: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 08/14] ipv6/ip6_gre: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 09/14] ipv6/sit: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 10/14] mac80211: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 11/14] bridge/br_mdb: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 12/14] bonding/bond_main: " Paul E. McKenney
2013-10-11 23:17   ` [PATCH v3 tip/core/rcu 13/14] bonding/bond_alb.c: " Paul E. McKenney
2013-10-12  6:53 ` Josh Triplett [this message]
2013-10-12 17:13   ` [PATCH v3 tip/core/rcu 0/14] Sparse-related updates for 3.13 Paul E. McKenney
2013-10-12 17:39     ` [Bridge] " Hannes Frederic Sowa
2013-10-12 17:43       ` Hannes Frederic Sowa
2013-10-13 11:17         ` Paul E. McKenney
2013-10-13 11:15       ` [Bridge] " Paul E. McKenney

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