Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761555AbXE2GqV (ORCPT ); Tue, 29 May 2007 02:46:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751698AbXE2GqI (ORCPT ); Tue, 29 May 2007 02:46:08 -0400 Received: from netops-testserver-3-out.sgi.com ([192.48.171.28]:46718 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751616AbXE2GqG (ORCPT ); Tue, 29 May 2007 02:46:06 -0400 Date: Mon, 28 May 2007 23:45:59 -0700 From: Jeremy Higdon To: Timothy Shimmin Cc: David Chinner , Neil Brown , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, Jens Axboe , Phillip Susi , Stefan Bader , Andreas Dilger , Tejun Heo Subject: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md. Message-ID: <20070529064559.GB531679@sgi.com> References: <18006.38689.818186.221707@notabene.brown> <18010.12472.209452.148229@notabene.brown> <20070528024559.GA85884050@sgi.com> <980E945058C35F7E3117FE88@timothy-shimmins-power-mac-g5.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <980E945058C35F7E3117FE88@timothy-shimmins-power-mac-g5.local> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 531 Lines: 13 On Mon, May 28, 2007 at 02:48:45PM +1000, Timothy Shimmin wrote: > I'm taking it that the FUA write will just guarantee that that > particular write has made it to disk on i/o completion > (and no write cache flush is done). Correct. It only applies to that one write command. jeremy - 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/