From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vladislav Bolkhovitin Subject: Re: [RFC] relaxed barrier semantics Date: Fri, 06 Aug 2010 00:05:52 +0400 Message-ID: <4C5B19A0.9070200@vlnb.net> References: <4C4FECFE.9040509@kernel.org> <20100728085048.GA8884@lst.de> <4C4FF136.5000205@kernel.org> <20100728090025.GA9252@lst.de> <4C4FF592.9090800@kernel.org> <20100728092859.GA11096@lst.de> <20100802173930.GP16630@think> <4C5AB89C.5080700@vlnb.net> <20100805133225.GF29846@think> <4C5B1583.6070706@vlnb.net> <20100805195048.GA19030@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Chris Mason , Tejun Heo , Vivek Goyal , Jan Kara , jaxboe@fusionio.com, James.Bottomley@suse.de, linux-fsdevel@vger.kernel.org, linux-scsi@vger.kernel.org, tytso@mit.edu, swhiteho@redhat.com, konishi.ryusuke@lab.ntt.co.jp To: Christoph Hellwig Return-path: Received: from moutng.kundenserver.de ([212.227.17.9]:60612 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754230Ab0HEUGV (ORCPT ); Thu, 5 Aug 2010 16:06:21 -0400 In-Reply-To: <20100805195048.GA19030@lst.de> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Christoph Hellwig, on 08/05/2010 11:50 PM wrote: > On Thu, Aug 05, 2010 at 11:48:19PM +0400, Vladislav Bolkhovitin wrote: >> So, I believe, Linux must use that possibility to get full storage >> performance and to finally simplify its storage stack. > > So instead of talking what about doing a prototype and show us what > improvement it gives? Sure, I'd love to. But, unfortunately, I can't clone myself, so I'm trying to help the best of what I could: my level of storage and SCSI expertise. This area is quite special, so I'm trying to explain some misunderstandings I see and illustrate my points by some possible work flows and interfaces. But I can shut up if you'd like. Thanks, Vlad