Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751478AbWIYLvp (ORCPT ); Mon, 25 Sep 2006 07:51:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751479AbWIYLvp (ORCPT ); Mon, 25 Sep 2006 07:51:45 -0400 Received: from 195-13-16-24.net.novis.pt ([195.23.16.24]:29880 "EHLO bipbip.grupopie.com") by vger.kernel.org with ESMTP id S1751478AbWIYLvo (ORCPT ); Mon, 25 Sep 2006 07:51:44 -0400 Message-ID: <4517C2CC.4070900@grupopie.com> Date: Mon, 25 Sep 2006 12:51:40 +0100 From: Paulo Marques Organization: Grupo PIE User-Agent: Thunderbird 1.5.0.7 (X11/20060909) MIME-Version: 1.0 To: "H. Peter Anvin" CC: Michael Tokarev , Johannes Stezenbach , Jan Engelhardt , Lennart Sorensen , Dax Kelson , Linux kernel , Linus Torvalds Subject: Re: Smaller compressed kernel source tarballs? References: <1158870777.24172.23.camel@mentorng.gurulabs.com> <20060921204250.GN13641@csclub.uwaterloo.ca> <45130792.9040104@zytor.com> <20060922140007.GK13639@csclub.uwaterloo.ca> <4514103D.8010303@zytor.com> <20060922174137.GA29929@linuxtv.org> <451426C9.9040002@zytor.com> <4514292C.5000309@tls.msk.ru> <45142AF1.1090806@zytor.com> In-Reply-To: <45142AF1.1090806@zytor.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1186 Lines: 31 H. Peter Anvin wrote: > Michael Tokarev wrote: >>[...] >> On the site it's said lzma(sdk) is under rewrite to support >> new format with magic number and crc checks... > > That is an absolute must, IMO. I would use the gzip format as a base. If you're suggesting a gzip like format (but with different magic, etc.), that's ok. However, it has been suggested on similar threads to use the CM field of the gzip format to introduce different compression methods. While this is the purpose of this field, I find this to be a very bad idea. The worse part of it is that, after "lzma gzip" files start to proliferate, you never know if you can decompress a .gz with your version of gunzip, which is something that you currently have for granted. If more formats start being supported inside gzip, this only gets worse... -- Paulo Marques - www.grupopie.com "The face of a child can say it all, especially the mouth part of the face." - 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/