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Date: Thu, 1 Feb 2007 21:27:47 -0800 (PST)
From: Christoph Lameter <clameter@....com>
To: Peter Zijlstra <a.p.zijlstra@...llo.nl>
cc: Andrew Morton <akpm@...l.org>,
Russell King <rmk+lkml@....linux.org.uk>,
Mel Gorman <mel@....ul.ie>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
Christoph Lameter <clameter@...r.sgi.com>
Subject: Re: [PATCH 0/8] Create ZONE_MOVABLE to partition memory between
movable and non-movable pages
On Tue, 30 Jan 2007, Peter Zijlstra wrote:
> I'm guessing this will involve page migration.
Not necessarily. The approach also works without page migration. Depends
on an intelligent allocation scheme that stays off the areas of interest
to those restricted to low area allocations as much as possible and then
is able to reclaim from a section of a zone if necessary. The
implementation of alloc_pages_range() that I did way back did not reply on
page migration.
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