linux-kernel - Re: [PATCH 08/10] vmscan: Setup pagevec as late as possible in shrink_inactive

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Message-ID: <20100416232830.GJ20640@cmpxchg.org>
Date:	Sat, 17 Apr 2010 01:28:30 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	Mel Gorman <mel@....ul.ie>
Cc:	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, Chris Mason <chris.mason@...cle.com>,
	Dave Chinner <david@...morbit.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 08/10] vmscan: Setup pagevec as late as possible in shrink_inactive_list()

On Thu, Apr 15, 2010 at 06:21:41PM +0100, Mel Gorman wrote:
> shrink_inactive_list() sets up a pagevec to release unfreeable pages. It
> uses significant amounts of stack doing this. This patch splits
> shrink_inactive_list() to take the stack usage out of the main path so
> that callers to writepage() do not contain an unused pagevec on the
> stack.
> 
> Signed-off-by: Mel Gorman <mel@....ul.ie>

Reviewed-by: Johannes Weiner <hannes@...xchg.org>
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