linux-kernel - Re: [PATCH 0/7] Reduce filesystem writeback from page reclaim v3

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Message-ID: <20110810110056.GA31756@infradead.org>
Date:	Wed, 10 Aug 2011 07:00:56 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Linux-MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	XFS <xfs@....sgi.com>, Dave Chinner <david@...morbit.com>,
	Christoph Hellwig <hch@...radead.org>,
	Johannes Weiner <jweiner@...hat.com>,
	Wu Fengguang <fengguang.wu@...el.com>, Jan Kara <jack@...e.cz>,
	Rik van Riel <riel@...hat.com>,
	Minchan Kim <minchan.kim@...il.com>
Subject: Re: [PATCH 0/7] Reduce filesystem writeback from page reclaim v3

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.

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