From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264920AbUEVIoP (ORCPT ); Sat, 22 May 2004 04:44:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264922AbUEVIoP (ORCPT ); Sat, 22 May 2004 04:44:15 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:9420 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S264920AbUEVIoK (ORCPT ); Sat, 22 May 2004 04:44:10 -0400 Date: Sat, 22 May 2004 10:43:58 +0200 From: Jens Axboe To: Arjan van de Ven Cc: Andrew Morton , Chris Mason , linux-kernel@vger.kernel.org Subject: Re: [PATCH] ext3 barrier bits Message-ID: <20040522084357.GT1952@suse.de> References: <20040521093207.GA1952@suse.de> <20040521023807.0de63c7a.akpm@osdl.org> <20040521100234.GK1952@suse.de> <20040521235044.6160cccb.akpm@osdl.org> <20040522073540.GO1952@suse.de> <20040522011139.01a7da10.akpm@osdl.org> <1085214261.2781.1.camel@laptop.fenrus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1085214261.2781.1.camel@laptop.fenrus.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 22 2004, Arjan van de Ven wrote: > > > - Does the kernel tell you if your disk doesn't supoprt barriers? ie: > > how does the user know if it's working or not? > > ... and how do you know your disk isn't lying and ignoring the barriers? Easy to find out, time it. Or invent more imaginative cases where you actually test if it's there. -- Jens Axboe