linux-kernel - Re: [PATCH v2 1/3] deactivate invalidated pages

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Date:	Sun, 28 Nov 2010 21:26:15 -0500
From:	Ben Gamari <bgamari.foss@...il.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Minchan Kim <minchan.kim@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Nick Piggin <npiggin@...nel.dk>, Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH v2 1/3] deactivate invalidated pages

On Mon, 29 Nov 2010 11:13:53 +0900 (JST), KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:
> I'm not againt DONT_NEED feature. I only said PG_reclaim trick is not
> so effective. Every feature has their own pros/cons. I think the cons
> is too big. Also, nobody have mesured PG_reclaim performance gain. Did you?
> 
Not yet. Finally back from vacation here in the States. I'll try sitting
down to put together a test tonight.

- Ben

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