linux-kernel - Re: [PATCH] vmscan: ZVC updates in shrink_active

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Date:	Tue, 5 May 2009 14:33:50 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"cl@...ux-foundation.org" <cl@...ux-foundation.org>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"npiggin@...e.de" <npiggin@...e.de>,
	"riel@...hat.com" <riel@...hat.com>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] vmscan: ZVC updates in shrink_active_list() can be done once

On Tue, May 05, 2009 at 07:44:55AM +0800, Wu Fengguang wrote:
> This effectively lifts the unit of nr_inactive_* and pgdeactivate updates
> from PAGEVEC_SIZE=14 to SWAP_CLUSTER_MAX=32.

For __zone_reclaim() it will be >= SWAP_CLUSTER_MAX, depending on the
allocation order.

	Hannes
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