Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265889AbUAEFcf (ORCPT ); Mon, 5 Jan 2004 00:32:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265888AbUAEFcf (ORCPT ); Mon, 5 Jan 2004 00:32:35 -0500 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:12388 "EHLO ebiederm.dsl.xmission.com") by vger.kernel.org with ESMTP id S265889AbUAEFc3 (ORCPT ); Mon, 5 Jan 2004 00:32:29 -0500 To: viro@parcelfarce.linux.theplanet.co.uk Cc: Linus Torvalds , Daniel Jacobowitz , Andries Brouwer , Rob Love , rob@landley.net, Pascal Schmidt , linux-kernel@vger.kernel.org, Greg KH Subject: Re: udev and devfs - The final word References: <20040104034934.A3669@pclin040.win.tue.nl> <20040104142111.A11279@pclin040.win.tue.nl> <20040104230104.A11439@pclin040.win.tue.nl> <20040105030737.GA29964@nevyn.them.org> <20040105035037.GD4176@parcelfarce.linux.theplanet.co.uk> <20040105043830.GE4176@parcelfarce.linux.theplanet.co.uk> From: ebiederm@xmission.com (Eric W. Biederman) Date: 04 Jan 2004 22:26:37 -0700 In-Reply-To: <20040105043830.GE4176@parcelfarce.linux.theplanet.co.uk> Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.2 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 Content-Length: 1324 Lines: 22 viro@parcelfarce.linux.theplanet.co.uk writes: > On Sun, Jan 04, 2004 at 08:02:20PM -0800, Linus Torvalds wrote: > > Now, we'd probably not want to force the switch, but I do suspect we'll > > have exactly this as a switch in the "Kernel Debugging Config" section. > > Where even _common_ things like disks could end up with per-bootup values. > > Just to verify that every part of the system ends up having it right. > > Then we'd better have a very good idea of the things that are going to > break. Note that right now even late-boot code in kernel itself will > break on that - there are explicit checks for ROOT_DEV==MKDEV(2,0), > all sorts of weird crap deep in the bowels of arch/ppc/*/*, etc. /sbin/lilo and possibly some of the other bootloaders. Relationships between devices are a challenge to work with. How do you go from a partition to it's actual block device etc. I don't remember how many major numbers lilo has hard coded, I just remember looking at it once and realizing I couldn't think of a better way to accomplish what it was trying to do. Eric - 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/