Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 9 Jan 2002 13:22:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 9 Jan 2002 13:22:20 -0500 Received: from lacrosse.corp.redhat.com ([12.107.208.154]:33973 "EHLO lacrosse.corp.redhat.com") by vger.kernel.org with ESMTP id ; Wed, 9 Jan 2002 13:22:04 -0500 Date: Wed, 9 Jan 2002 13:21:48 -0500 From: Benjamin LaHaise To: Badari Pulavarty Cc: linux-kernel@vger.kernel.org, marcelo@conectiva.com.br, andrea@suse.de Subject: Re: [PATCH] PAGE_SIZE IO for RAW (RAW VARY) Message-ID: <20020109132148.C12609@redhat.com> In-Reply-To: <20020109125845.B12609@redhat.com> <200201091812.g09ICBF18477@eng2.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <200201091812.g09ICBF18477@eng2.beaverton.ibm.com>; from pbadari@us.ibm.com on Wed, Jan 09, 2002 at 10:12:11AM -0800 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 09, 2002 at 10:12:11AM -0800, Badari Pulavarty wrote: > why ? could you explain ? I am not expecting that user buffer be aligned > to PAGE_SIZE. Okay, that part I misread from the message, but that leaves the question of "does it work?" Iirc, Jeff Merkey tested variable sized ios with nwfs, but found that triggered bugs in the low level drivers, some of which assume that all buffer heads within a request have the same block size. Given that concern, I really don't think this is a safe 2.4 patch. -ben -- Fish. - 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/