From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264432AbTDXCSu (ORCPT ); Wed, 23 Apr 2003 22:18:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264434AbTDXCSu (ORCPT ); Wed, 23 Apr 2003 22:18:50 -0400 Received: from astound-64-85-224-253.ca.astound.net ([64.85.224.253]:57865 "EHLO master.linux-ide.org") by vger.kernel.org with ESMTP id S264432AbTDXCSs (ORCPT ); Wed, 23 Apr 2003 22:18:48 -0400 Date: Wed, 23 Apr 2003 19:27:19 -0700 (PDT) From: Andre Hedrick To: Andrew Morton cc: Andries Brouwer , B.Zolnierkiewicz@elka.pw.edu.pl, alan@lxorguk.ukuu.org.uk, axboe@suse.de, linux-kernel@vger.kernel.org Subject: Re: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4) In-Reply-To: <20030423162041.1b7ee5b3.akpm@digeo.com> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Does Task Management Command set help? For those who speak FibreChannel, this has meaning. I can be used as a means to test the depth of the protocol support for a family of drives. This is what www.linuxdiskcert.org was to be about, and maybe Jens will be able to make it happen. As I will be transfering the domain th Jens this summer. On Wed, 23 Apr 2003, Andrew Morton wrote: > Andries Brouwer wrote: > > > > On Wed, Apr 23, 2003 at 03:35:00PM -0700, Andrew Morton wrote: > > > > > What is special about the IDE ioctl approach? > > > > Usually one wants to use the standard commands for I/O. > > But if the purpose is to talk to the drive (set password, > > set native max, eject, change ZIP drive from big floppy > > mode to removable disk mode, etc. etc.) then one needs > > a means to execute IDE commands "by hand". > > Yes, but none of these are performance-critical and they don't involve > large amnounts of data. A copy is OK. > > If all the rework against bio_map_user() and friends is needed for other > reasons then fine. But it doesn't seem to be needed for the IDE taskfile > ioctl. > Andre Hedrick LAD Storage Consulting Group