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Message-ID: <20090805155805.GC23385@random.random>
Date:	Wed, 5 Aug 2009 17:58:05 +0200
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Rik van Riel <riel@...hat.com>,
	"Dike, Jeffrey G" <jeffrey.g.dike@...el.com>,
	"Yu, Wilfred" <wilfred.yu@...el.com>,
	"Kleen, Andi" <andi.kleen@...el.com>, Avi Kivity <avi@...hat.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Mel Gorman <mel@....ul.ie>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: Re: [RFC] respect the referenced bit of KVM guest pages?

On Wed, Aug 05, 2009 at 10:40:58AM +0800, Wu Fengguang wrote:
>  			 */
> -			if ((vm_flags & VM_EXEC) && !PageAnon(page)) {
> +			if ((vm_flags & VM_EXEC) || PageAnon(page)) {
>  				list_add(&page->lru, &l_active);
>  				continue;
>  			}
> 

Please nuke the whole check and do an unconditional list_add;
continue; there.
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