linux-kernel - Re: Linux 2.6.25-rc2

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Message-ID: <Pine.LNX.4.64.0802271532220.14380@schroedinger.engr.sgi.com>
Date:	Wed, 27 Feb 2008 15:32:52 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Torsten Kaiser <just.for.lkml@...glemail.com>,
	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Eric Dumazet <dada1@...mosbay.com>
Subject: Re: Linux 2.6.25-rc2

On Tue, 19 Feb 2008, Mathieu Desnoyers wrote:

> incrementing the variable with a "++" when interrupts are not disabled.
> It's not an atomic add and it's racy. The code within stat() does
> exactly this.

Yes but that is only for used for statistics which can be racy. Note that 
the VM event statistics also can be racy.

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