linux-kernel - Re: [PATCH 1/4] pull out the page pre-release and sanity check logic for reuse

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Message-Id: <20081002160512.b87c3440.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 2 Oct 2008 16:05:12 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andy Whitcroft <apw@...dowen.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mel@....ul.ie>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/4] pull out the page pre-release and sanity check
 logic for reuse

On Wed,  1 Oct 2008 13:30:58 +0100
Andy Whitcroft <apw@...dowen.org> wrote:

> When we are about to release a page we perform a number of actions
> on that page.  We clear down any anonymous mappings, confirm that
> the page is safe to release, check for freeing locks, before mapping
> the page should that be required.  Pull this processing out into a
> helper function for reuse in a later patch.
> 
> Note that we do not convert the similar cleardown in free_hot_cold_page()
> as the optimiser is unable to squash the loops during the inline.
> 
> Signed-off-by: Andy Whitcroft <apw@...dowen.org>
> Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Acked-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Reviewed-by: Rik van Riel <riel@...hat.com>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiruyo@...fujitsu.com>

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