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Date: Wed, 10 Aug 2011 12:15:47 +0100
From: Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH 0/7] Reduce filesystem writeback from page reclaim v3
Message-ID: <20110810111547.GZ19099@suse.de>
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	<20110810110056.GA31756@infradead.org>
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To: Christoph Hellwig <hch@infradead.org>
Cc: Rik van Riel <riel@redhat.com>, Jan Kara <jack@suse.cz>, LKML <linux-kernel@vger.kernel.org>, XFS <xfs@oss.sgi.com>, Linux-MM <linux-mm@kvack.org>, Minchan Kim <minchan.kim@gmail.com>, Wu Fengguang <fengguang.wu@intel.com>, Johannes Weiner <jweiner@redhat.com>

On Wed, Aug 10, 2011 at 07:00:56AM -0400, Christoph Hellwig wrote:
> On Wed, Aug 10, 2011 at 11:47:13AM +0100, Mel Gorman wrote:
> >   o Dropped btrfs warning when filesystems are called from direct
> >     reclaim. The fallback method for migration looks indistinguishable
> >     from direct reclaim.
> 
> The right fix is to simply remove that fallback, possibly in combination
> with implementating real migration support for btrfs.
> 

Removing the fallback entirely is overkill as proper migration support
is not going to get 100% coverage but I agree that btrfs should have
real migration support. I didn't think it belonged in this series
though.

-- 
Mel Gorman
SUSE Labs

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