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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Christoph Lameter <cl@linux-foundation.org>
Subject: Re: [RFC][PATCH] mm: the page of MIGRATE_RESERVE don't insert into pcp
Cc: kosaki.motohiro@jp.fujitsu.com, Mel Gorman <mel@csn.ul.ie>,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
       LKML <linux-kernel@vger.kernel.org>, linux-mm <linux-mm@kvack.org>
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> > 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.

Yup, there are very nicer patch!