linux-kernel - Re: [PATCH 3/3] Do not unconditionally treat zones that fail zone

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Message-ID: <20090608144346.GH15070@csn.ul.ie>
Date:	Mon, 8 Jun 2009 15:43:46 +0100
From:	Mel Gorman <mel@....ul.ie>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>, yanmin.zhang@...el.com,
	Wu Fengguang <fengguang.wu@...el.com>, linuxram@...ibm.com,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] Do not unconditionally treat zones that fail
	zone_reclaim() as full

On Mon, Jun 08, 2009 at 10:32:12AM -0400, Christoph Lameter wrote:
> Ok this patch addresses a bug in zone reclaim introduced by Paul Jackson
> in commit 9276b1bc96a132f4068fdee00983c532f43d3a26. Before that commit
> zone reclaim would not mark a zone as full if it failed but simply
> continue scanning.
> 

Well spotted. I hadn't checked out the history as to when this problem
was introduced but it looks like this bug was introduced way back around
2.6.19.

> Acked-by: Christoph Lameter <cl@...ux-foundation.org>
> 

Thanks

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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