linux-kernel - Re: [patch 1/2] mm: vmscan: fix force-scanning small targets without swap

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Message-ID: <20110817133814.GC4484@csn.ul.ie>
Date:	Wed, 17 Aug 2011 14:38:14 +0100
From:	Mel Gorman <mel@....ul.ie>
To:	Johannes Weiner <jweiner@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>, Ying Han <yinghan@...gle.com>,
	Balbir Singh <bsingharora@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
Subject: Re: [patch 1/2] mm: vmscan: fix force-scanning small targets without
 swap

On Thu, Aug 11, 2011 at 10:31:54PM +0200, Johannes Weiner wrote:
> Without swap, anonymous pages are not scanned.  As such, they should
> not count when considering force-scanning a small target if there is
> no swap.
> 
> Otherwise, targets are not force-scanned even when their effective
> scan number is zero and the other conditions--kswapd/memcg--apply.
> 
> Signed-off-by: Johannes Weiner <jweiner@...hat.com>

Acked-by: Mel Gorman <mel@....ul.ie>

-- 
Mel Gorman
SUSE Labs
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