linux-kernel - Re: [PATCH] Apply memory policies to top two highest zones when highest zone is ZONE

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Date:	Wed, 8 Aug 2007 10:03:42 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Mel Gorman <mel@...net.ie>
cc:	Andrew Morton <akpm@...ux-foundation.org>, Andi Kleen <ak@...e.de>,
	Lee.Schermerhorn@...com, kamezawa.hiroyu@...fujitsu.com,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Apply memory policies to top two highest zones when
 highest zone is ZONE_MOVABLE

On Wed, 8 Aug 2007, Mel Gorman wrote:

> Despite a fairly specific case, I'd still like to get the problem fixed
> for 2.6.23. I've posted up an alternative fix under the subject "Use one
> zonelist per node instead of multiple zonelists v2". It's a more invasive
> fix although arguably it's better overall than the hack because it's not
> dealing with a specific special case and has a sensible path forward that
> makes policies a saner ultimately. However, unlike the hack it affects all
> callers of the page allocator so lets see what the reaction from reviewers
> is before forgetting about the hack altogether.

Well its more a precursor to things to come than a hack. If the tests go 
well for the single zonelist scheme then we may end up doing what the 
patch did for the mpol_bind zonelists for all allocations.

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