linux-kernel - Re: [PATCH] mm: count only reclaimable lru pages v2

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Message-ID: <alpine.DEB.1.10.0907161220270.29771@gentwo.org>
Date:	Thu, 16 Jul 2009 12:21:34 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
cc:	Rik van Riel <riel@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	David Howells <dhowells@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"tytso@....edu" <tytso@....edu>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"elladan@...imo.com" <elladan@...imo.com>,
	"npiggin@...e.de" <npiggin@...e.de>,
	"Barnes, Jesse" <jesse.barnes@...el.com>
Subject: Re: [PATCH] mm: count only reclaimable lru pages v2

On Thu, 16 Jul 2009, Wu Fengguang wrote:

> /*
>  * The reclaimable count would be mostly accurate.
>  * The less reclaimable pages may be
>  * - mlocked pages, which will be moved to unevictable list when encountered
>  * - mapped pages, which may require several travels to be reclaimed
>  * - dirty pages, which is not "instantly" reclaimable
>  */

ok.
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