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Date: Tue, 11 May 2010 10:56:00 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
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To: Mel Gorman <mel@csn.ul.ie>
cc: Andrew Morton <akpm@linux-foundation.org>, Linux-MM <linux-mm@kvack.org>,
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       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
       Andrea Arcangeli <aarcange@redhat.com>, Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg_pages()
 and rmap_walk() during migration by not migrating temporary stacks
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On Tue, 11 May 2010, Mel Gorman wrote:

> Or just identify the temporary stack from the migration side instead of
> adding to the cost of exec?

Adding one off checks to a generic mechanism isnt really clean
programming. Using the provided means of disabling a generic mechanism is.