Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262969AbVDLV5y (ORCPT ); Tue, 12 Apr 2005 17:57:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262994AbVDLVyR (ORCPT ); Tue, 12 Apr 2005 17:54:17 -0400 Received: from mail-in-06.arcor-online.net ([151.189.21.46]:44770 "EHLO mail-in-06.arcor-online.net") by vger.kernel.org with ESMTP id S262969AbVDLVwf (ORCPT ); Tue, 12 Apr 2005 17:52:35 -0400 From: "Bodo Eggert " <7eggert@gmx.de> Subject: Re: [INFO] Kernel strict versioning To: Sensei , Krzysztof Halasa , Adrian Bunk , linux-kernel@vger.kernel.org Reply-To: 7eggert@gmx.de Date: Tue, 12 Apr 2005 23:52:19 +0200 References: <3R6fp-7Qs-15@gated-at.bofh.it> <3R71T-4S-15@gated-at.bofh.it> <3Si4Q-Nh-21@gated-at.bofh.it> <3SiRe-1eq-9@gated-at.bofh.it> <3SjNh-1Yq-3@gated-at.bofh.it> <3Ss48-qG-1@gated-at.bofh.it> <3SxGA-5mR-29@gated-at.bofh.it> User-Agent: KNode/0.7.2 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8Bit Message-Id: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1745 Lines: 34 Franco "Sensei" wrote: > Krzysztof Halasa wrote: >> It isn't enough. The same compiler and the same .config - yes. But that >> means you'd have no progress within, say, 2.6. Only bug fixes. >> There _is_ a tree like that - 2.6.11.Xs are only bugfixes. > > Ok, this adds a new information. Let me explain what I understand now. > > When a new component is added to the kernel, let's say support for a new > file system, a .config entry is created (CONFIG_MYFS=y|m). Why is this > entry breaking compatibility? I mean, symbols still remains the same. > The addition of symbols is not a breaking point. A kernel feature may require a different (bigger, slower, ...) internal data structure, which isn't desired unless you use that feature. Or it will change the semantics of some functions, e.g. functions being a noop (and optimized away) for uniprocessor with no highmem will do some important task on a SMP machine with 4 GB. >> Asking for one modules dir only is similar to asking for only one >> /boot/vmlinuz-2.6 kernel file. > > Quite the same, yes. You can still have different kernels of course! By > the way, another stupid curiosity is why /lib/modules instead of /boot? Boot vs. bootloader. The same reason that allows lilo.conf to be in /etc See http://www.pathname.com/fhs/ , too -- Top 100 things you don't want the sysadmin to say: 81. The drive ate the tape but that's OK, I brought my screwdriver. Fri?, Spammer: etfxEdqwnm@good4her.info tech@prancegood.com - 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/