netdev - RE: Strange latency spikes/TX network stalls on Sun Fire X4150(x86) and e1000e

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Message-ID: <1338376365.2760.157.camel@edumazet-glaptop>
Date:	Wed, 30 May 2012 13:12:45 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	Hiroaki SHIMODA <shimoda.hiroaki@...il.com>,
	Tom Herbert <therbert@...gle.com>,
	Denys Fedoryshchenko <denys@...p.net.lb>,
	netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net,
	jeffrey.t.kirsher@...el.com, jesse.brandeburg@...el.com,
	davem@...emloft.net
Subject: RE: Strange latency spikes/TX network stalls on Sun Fire
 X4150(x86) and e1000e

On Wed, 2012-05-30 at 13:04 +0200, Eric Dumazet wrote:

> Please don't use lazy volatile.
> 
> Unless you really want Linus flames (and ours)
> 
> ACCESS_ONCE() is much cleaner.
> 

http://yarchive.net/comp/linux/ACCESS_ONCE.html


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