netdev - Re: [PATCH] net: add a synchronize_net() in netdev_rx_handler

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Message-ID: <1364571495.5113.23.camel@edumazet-glaptop>
Date:	Fri, 29 Mar 2013 08:38:15 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ivan Vecera <ivecera@...hat.com>
Cc:	Jiri Pirko <jpirko@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Andy Gospodarek <andy@...yhouse.net>,
	"David S. Miller" <davem@...emloft.net>,
	LKML <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	Nicolas de Pesloüan 
	<nicolas.2p.debian@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Guy Streeter <streeter@...hat.com>,
	"Paul E. McKenney" <paulmck@...ibm.com>, stephen@...workplumber.org
Subject: Re: [PATCH] net: add a synchronize_net() in
 netdev_rx_handler_unregister()

On Fri, 2013-03-29 at 16:11 +0100, Ivan Vecera wrote:

> Erik, why doesn't help the write barrier between the assignments. It 
> should guarantee their orders... or not?
> 

Its not enough, I wont explain here why as RCU is quite well documented
in Documentation/RCU



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