From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261156AbVGOTO5 (ORCPT ); Fri, 15 Jul 2005 15:14:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261157AbVGOTO5 (ORCPT ); Fri, 15 Jul 2005 15:14:57 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:31164 "EHLO parcelfarce.linux.theplanet.co.uk") by vger.kernel.org with ESMTP id S261156AbVGOTO4 (ORCPT ); Fri, 15 Jul 2005 15:14:56 -0400 Date: Fri, 15 Jul 2005 20:16:53 +0100 From: Joel Becker To: Badari Pulavarty Cc: Tejun Heo , Daniel McNeil , "linux-aio@kvack.org" , Linux Kernel Mailing List Subject: Re: [rfc patch 2/2] direct-io: remove address alignment check Message-ID: <20050715191653.GI16877@parcelfarce.linux.theplanet.co.uk> Mail-Followup-To: Joel Becker , Badari Pulavarty , Tejun Heo , Daniel McNeil , "linux-aio@kvack.org" , Linux Kernel Mailing List References: <1121298112.6025.21.camel@ibm-c.pdx.osdl.net> <42D70318.1000304@gmail.com> <42D74724.8000703@us.ibm.com> <20050715165616.GH16877@parcelfarce.linux.theplanet.co.uk> <1121449846.6755.91.camel@dyn9047017102.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1121449846.6755.91.camel@dyn9047017102.beaverton.ibm.com> User-Agent: Mutt/1.4.1i X-Burt-Line: Trees are cool. X-Red-Smith: Ninety feet between bases is perhaps as close as man has ever come to perfection. Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 15, 2005 at 10:50:46AM -0700, Badari Pulavarty wrote: > I believe some OSs do buffered IO, if there is a problem with alignment. That's what I said. They all do buffered I/O if the alignment is not 512B. They do _not_ try to accept alignments that are smaller. There's no good reason to. It just adds needless complexity. Joel -- "I think it would be a good idea." - Mahatma Ghandi, when asked what he thought of Western civilization http://www.jlbec.org/ jlbec@evilplan.org