From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [RFC v3] ext4: Combine barrier requests coming from fsync
Date: Mon, 9 Aug 2010 17:07:23 -0400
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Cc: Ted Ts'o <tytso@mit.edu>, Mingming Cao <cmm@us.ibm.com>,
	Ric Wheeler <rwheeler@redhat.com>,
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	Mingming Cao <mcao@us.ibm.com>
To: "Darrick J. Wong" <djwong@us.ibm.com>
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Can you try with the new barrier implementation in the

	[PATCH, RFC] relaxed barriers

by making cache flushes just that and not complicated drain barrier
it should speed this case up a lot.