Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764218AbXFHOn5 (ORCPT ); Fri, 8 Jun 2007 10:43:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754678AbXFHOnu (ORCPT ); Fri, 8 Jun 2007 10:43:50 -0400 Received: from lazybastard.de ([212.112.238.170]:38133 "EHLO longford.lazybastard.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753076AbXFHOnt (ORCPT ); Fri, 8 Jun 2007 10:43:49 -0400 Date: Fri, 8 Jun 2007 15:19:05 +0200 From: =?utf-8?B?SsO2cm4=?= Engel To: Jared Hulbert Cc: Christoph Hellwig , carsteno@de.ibm.com, Nick Piggin , Andrew Morton , richard.griffiths@windriver.com, Richard Griffiths , Linux-kernel@vger.kernel.org Subject: Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP Message-ID: <20070608131905.GB20718@lazybastard.org> References: <46641472.3080802@de.ibm.com> <6934efce0706060413y6e74512s19d5f468106d4b85@mail.gmail.com> <20070606113351.GA11701@infradead.org> <6934efce0706060907n209fe6bcnb470101196aa9c55@mail.gmail.com> <20070606161621.GA20247@infradead.org> <6934efce0706061126n551cccaeg68a0def87457911@mail.gmail.com> <20070607193707.GA17144@infradead.org> <6934efce0706071411y6d184629i5ce0694175bef164@mail.gmail.com> <20070607211519.GA22348@infradead.org> <6934efce0706071559j24978c15kc42914677dc8408e@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <6934efce0706071559j24978c15kc42914677dc8408e@mail.gmail.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1060 Lines: 26 On Thu, 7 June 2007 15:59:00 -0700, Jared Hulbert wrote: > > Gee I think it seems logfs would be a better choice. Jffs2 and > ubifs(jffs3) for that matter combine node and node header in series > which means your data nodes aren't aligned to page boundarys. Logfs > nodes could be more easily aligned. That used to be the case before I did a format change. Compression pretty much requires a format very similar to JFFS2. The alternative would be _huge_ complexity. However, it would be possible to create specialized XIP segments with the old page-aligned format. Supporting two kinds of segment format is still simpler than supporting compression with the old format. Jörn -- With a PC, I always felt limited by the software available. On Unix, I am limited only by my knowledge. -- Peter J. Schoenster - 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/