linux-kernel - Re: [RFC][PATCH] mm: the page of MIGRATE

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Message-ID: <Pine.LNX.4.64.0811071244330.5387@quilx.com>
Date:	Fri, 7 Nov 2008 12:45:20 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Mel Gorman <mel@....ul.ie>
cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: Re: [RFC][PATCH] mm: the page of MIGRATE_RESERVE don't insert into
 pcp

On Fri, 7 Nov 2008, Mel Gorman wrote:

> Oh, do you mean splitting the list instead of searching? This is how it was
> originally implement and shot down on the grounds it increased the size of
> a per-cpu structure.

The situation may be better with the cpu_alloc stuff. The big pcp array in
struct zone for all possible processors will be gone and thus the memory
requirements will be less.
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