Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752652Ab0HRKWK (ORCPT ); Wed, 18 Aug 2010 06:22:10 -0400 Received: from ozlabs.org ([203.10.76.45]:59508 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751902Ab0HRKWI (ORCPT ); Wed, 18 Aug 2010 06:22:08 -0400 From: Rusty Russell To: Christoph Hellwig Subject: Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support Date: Wed, 18 Aug 2010 19:52:02 +0930 User-Agent: KMail/1.13.2 (Linux/2.6.32-24-generic; KDE/4.4.2; i686; ; ) Cc: Tejun Heo , jaxboe@fusionio.com, linux-fsdevel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, James.Bottomley@suse.de, tytso@mit.edu, chris.mason@oracle.com, swhiteho@redhat.com, konishi.ryusuke@lab.ntt.co.jp, dm-devel@redhat.com, vst@vlnb.net, jack@suse.cz, rwheeler@redhat.com, hare@suse.de, neilb@suse.de, mst@redhat.com References: <1281977523-19335-1-git-send-email-tj@kernel.org> <4C6A458B.5040407@kernel.org> <20100817132327.GA3347@lst.de> In-Reply-To: <20100817132327.GA3347@lst.de> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201008181952.03093.rusty@rustcorp.com.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 685 Lines: 15 On Tue, 17 Aug 2010 10:53:27 pm Christoph Hellwig wrote: > Given how little testing lguest gets compared to qemu I really don't > want a protocol addition for it unless it really buys us something. > Once we're done with this barrier conversion I plan into benchmarking > FUA and a pre-flush tag on the command for virtio in real life setups, > and see if it actually buys us anything. Absolutely. Lguest should follow, not lead! Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/