linux-kernel - Re: [PATCH 1/2] scalable rw

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Message-ID: <Pine.LNX.4.64.0705161639010.12688@schroedinger.engr.sgi.com>
Date:	Wed, 16 May 2007 16:40:59 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Andi Kleen <andi@...stfloor.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...sign.ru>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: [PATCH 1/2] scalable rw_mutex

On Wed, 16 May 2007, Andrew Morton wrote:

> (I hope.  Might have race windows in which the percpu_counter_sum() count is
> inaccurate?)

The question is how do these race windows affect the locking scheme?
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