From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 0/12] Avoid overflowing of stack during page reclaim V2
Date: Mon, 14 Jun 2010 11:10:11 -0400
Message-ID: <20100614151011.GA24948@infradead.org>
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Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-mm@kvack.org, Dave Chinner <david@fromorbit.com>,
	Chris Mason <chris.mason@oracle.com>,
	Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Christoph Hellwig <hch@infradead.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mel@csn.ul.ie>
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On Mon, Jun 14, 2010 at 12:17:41PM +0100, Mel Gorman wrote:
> This is a merging of two series - the first of which reduces stack usage
> in page reclaim and the second which writes contiguous pages during reclaim
> and avoids writeback in direct reclaimers.

This stuff looks good to me from the filesystem POV.

You might want to throw in a follow on patch to remove the PF_MEMALLOC
checks from the various ->writepage methods.