linux-kernel - Re: [PATCH 09/12] vmscan: Setup pagevec as late as possible in shrink_page

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Message-ID: <4C1681ED.5080502@redhat.com>
Date:	Mon, 14 Jun 2010 15:24:29 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mel@....ul.ie>
CC:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org, Dave Chinner <david@...morbit.com>,
	Chris Mason <chris.mason@...cle.com>,
	Nick Piggin <npiggin@...e.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Christoph Hellwig <hch@...radead.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 09/12] vmscan: Setup pagevec as late as possible in shrink_page_list()

On 06/14/2010 07:17 AM, Mel Gorman wrote:
> shrink_page_list() sets up a pagevec to release pages as according as they
> are free. It uses significant amounts of stack on the pagevec. This
> patch adds pages to be freed via pagevec to a linked list which is then
> freed en-masse at the end. This avoids using stack in the main path that
> potentially calls writepage().
>
> Signed-off-by: Mel Gorman<mel@....ul.ie>

Reviewed-by: Rik van Riel <riel@...hat.com>

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