From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751105AbWFJPDZ (ORCPT ); Sat, 10 Jun 2006 11:03:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751161AbWFJPDZ (ORCPT ); Sat, 10 Jun 2006 11:03:25 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:37051 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S1751105AbWFJPDY (ORCPT ); Sat, 10 Jun 2006 11:03:24 -0400 Message-ID: <448ADF32.3070705@garzik.org> Date: Sat, 10 Jun 2006 11:03:14 -0400 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.2 (X11/20060501) MIME-Version: 1.0 To: Ingo Molnar CC: Adrian Bunk , Gerrit Huizenga , Linus Torvalds , Alex Tomas , Andrew Morton , ext2-devel , linux-kernel@vger.kernel.org, cmm@us.ibm.com, linux-fsdevel@vger.kernel.org, Andreas Dilger Subject: Re: [Ext2-devel] [RFC 0/13] extents and 48bit ext3 References: <20060610134645.GB11634@stusta.de> <20060610144228.GA6416@elte.hu> In-Reply-To: <20060610144228.GA6416@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.1.1 on srv5.dvmed.net summary: Content analysis details: (-4.2 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > the ext3 -> ext4 patches add +2115 lines of code (which 2115 lines solve > the biggest performance and scaling problem ext3 currently has), which > is 1.9% of the linecount of XFS. Indeed! > ext3 does quite a few things to stay compatible with ext2 - and frankly, > i very much expected it to do that when i migrated my ext2 data to ext3. > The days of "change the world in an incompatible way and dont look back" > are gone. I agree with your point in the thread -- most users and distros don't change their main fs on a whim. But I also point out that these extent+48bit changes _do_ change the format in an incompatible way... Jeff