From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 26/30] ext4: do not send discards as barriers
Date: Wed, 25 Aug 2010 17:58:42 +0200
Message-ID: <20100825155842.GA3229@lst.de>
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To: Tejun Heo <tj@kernel.org>
Cc: jeremy@goop.org, jack@suse.cz, snitzer@redhat.com, mst@redhat.com, linux-ide@vger.kernel.org, dm-devel@redhat.com, James.Bottomley@suse.de, konishi.ryusuke@lab.ntt.co.jp, hch@lst.de, k-ueda@ct.jp.nec.com, vst@vlnb.net, linux-scsi@vger.kernel.org, Christoph Hellwig <hch@infradead.org>, rusty@rustcorp.com.au, linux-raid@vger.kernel.org, swhiteho@redhat.com, chris.mason@oracle.com, tytso@mit.edu, jaxboe@fusionio.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, rwheeler@redhat.com
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On Wed, Aug 25, 2010 at 05:47:43PM +0200, Tejun Heo wrote:
> From: Christoph Hellwig <hch@infradead.org>
> 
> ext4 already uses synchronous discards, no need to add I/O barriers.

This needs the patch that Jan sent in reply to my initial version merged
into it.