Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750820AbWHJVKI (ORCPT ); Thu, 10 Aug 2006 17:10:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750831AbWHJVKH (ORCPT ); Thu, 10 Aug 2006 17:10:07 -0400 Received: from [80.71.248.82] ([80.71.248.82]:64473 "EHLO gw.home.net") by vger.kernel.org with ESMTP id S1750820AbWHJVKB (ORCPT ); Thu, 10 Aug 2006 17:10:01 -0400 X-Comment-To: Jeff Garzik To: Jeff Garzik Cc: Andrew Morton , linux-fsdevel@vger.kernel.org, cmm@us.ibm.com, ext2-devel@lists.sourceforge.net, Badari Pulavarty , linux-kernel@vger.kernel.org Subject: Re: [Ext2-devel] [PATCH 1/5] Forking ext4 filesystem from ext3 filesystem References: <1155172622.3161.73.camel@localhost.localdomain> <20060809233914.35ab8792.akpm@osdl.org> <44DB8036.5020706@us.ibm.com> <44DB936D.2080909@garzik.org> <20060810132720.4d9fced4.akpm@osdl.org> <44DB9E6C.9070808@garzik.org> From: Alex Tomas Organization: CFS Date: Fri, 11 Aug 2006 01:11:23 +0400 In-Reply-To: <44DB9E6C.9070808@garzik.org> (Jeff Garzik's message of "Thu, 10 Aug 2006 17:00:28 -0400") Message-ID: User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux) 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: 628 Lines: 17 >>>>> Jeff Garzik (JG) writes: >> A buffer_head is the kernel's sole abstraction of a disk block. >> Filesystems use disk blocks a lot, and they need such an abstraction. JG> IMO Al Viro work has shown that you can do pagecache I/O without needing JG> such a heavyweight system. in delayed allocation patch for ext3 (ontop of extents) we do use bio's for data. thanks, Alex - 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/