From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264962AbTK3RY6 (ORCPT ); Sun, 30 Nov 2003 12:24:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264964AbTK3RYn (ORCPT ); Sun, 30 Nov 2003 12:24:43 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:31922 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S264962AbTK3RWv (ORCPT ); Sun, 30 Nov 2003 12:22:51 -0500 Message-ID: <3FCA275B.1080904@pobox.com> Date: Sun, 30 Nov 2003 12:22:35 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jens Axboe CC: Bartlomiej Zolnierkiewicz , "Prakash K. Cheemplavam" , marcush@onlinehome.de, linux-kernel@vger.kernel.org, eric_mudama@Maxtor.com Subject: Re: Silicon Image 3112A SATA trouble References: <3FC36057.40108@gmx.de> <3FCA1DD3.70004@pobox.com> <20031130165146.GY10679@suse.de> <200311301758.53885.bzolnier@elka.pw.edu.pl> <3FCA2380.1050902@pobox.com> <20031130171006.GA10679@suse.de> In-Reply-To: <20031130171006.GA10679@suse.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jens Axboe wrote: >>Well, the constraint we must satisfy is >> >> sector_count % 15 != 1 > > > (sector_count % 15 != 1) && (sector_count != 1) > > to be more precise :) Thanks for the clarification, I did not know that. Avoiding sector_count==1 requires additional code :( Valid requests might be a single sector. With page-based blkdevs requests smaller than a page would certainly be infrequent, but are still possible, with bsg for example... Jeff