linux-kernel - Re: [PATCH 0/9] Reduce writeback from page reclaim context V5

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Message-ID: <20100729084523.GA537@infradead.org>
Date:	Thu, 29 Jul 2010 04:45:23 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Mel Gorman <mel@....ul.ie>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	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>, Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Christoph Hellwig <hch@...radead.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [PATCH 0/9] Reduce writeback from page reclaim context V5

Btw, I'm very happy with all this writeback related progress we've made
for the 2.6.36 cycle.  The only major thing that's really missing, and
which should help dramatically with the I/O patters is stopping direct
writeback from balance_dirty_pages().  I've seen patches frrom Wu and
and Jan for this and lots of discussion.  If we get either variant in
this should be once of the best VM release from the filesystem point of
view.

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