linux-kernel - Re: [RFC 5/8] Make writeout during reclaim cpuset aware

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Message-Id: <200701170907.14670.ak@suse.de>
Date:	Wed, 17 Jan 2007 09:07:14 +1100
From:	Andi Kleen <ak@...e.de>
To:	Christoph Lameter <clameter@....com>
Cc:	akpm@...l.org, Paul Menage <menage@...gle.com>,
	linux-kernel@...r.kernel.org,
	Nick Piggin <nickpiggin@...oo.com.au>, linux-mm@...ck.org,
	Paul Jackson <pj@....com>, Dave Chinner <dgc@....com>
Subject: Re: [RFC 5/8] Make writeout during reclaim cpuset aware

On Tuesday 16 January 2007 16:48, Christoph Lameter wrote:
> Direct reclaim: cpuset aware writeout
>
> During direct reclaim we traverse down a zonelist and are carefully
> checking each zone if its a member of the active cpuset. But then we call
> pdflush without enforcing the same restrictions. In a larger system this
> may have the effect of a massive amount of pages being dirtied and then
> either

Is there a reason this can't be just done by node, ignoring the cpusets? 

-Andi

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