From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752927Ab0CGIcg (ORCPT ); Sun, 7 Mar 2010 03:32:36 -0500 Received: from daytona.panasas.com ([67.152.220.89]:32987 "EHLO daytona.int.panasas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752441Ab0CGIce (ORCPT ); Sun, 7 Mar 2010 03:32:34 -0500 Message-ID: <4B93649F.10303@panasas.com> Date: Sun, 07 Mar 2010 10:32:31 +0200 From: Boaz Harrosh User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc12 Thunderbird/3.0.1 MIME-Version: 1.0 To: Christoph Hellwig CC: Linus Torvalds , linux-fsdevel , Linux Kernel , open-osd Subject: Re: [GIT PULL] exofs changes for 2.6.34 References: <4B8FA351.9030000@panasas.com> <20100304140004.GA10838@infradead.org> In-Reply-To: <20100304140004.GA10838@infradead.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 07 Mar 2010 08:32:33.0502 (UTC) FILETIME=[BBCBBFE0:01CABDD0] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/04/2010 04:00 PM, Christoph Hellwig wrote: > On Thu, Mar 04, 2010 at 02:10:57PM +0200, Boaz Harrosh wrote: >> Next changes will be support for raid5 and raid6 > > Err, you're not pushing another bloody copy of raid algorithms in, are > you? > No of course not. You should know me by now. I intend to fully reuse both linux/raid/pq.h and linux/async_tx.h. [What? lose all these CPU/HW optimizations people have done ?-)] I'm struggling with re-factoring some of drivers/md/raid* as I'm using bios just as they do, and bio_lists are fine, but currently the code is very md/dm structure specific, there is no abstract bio_list API but I hope I can extract one with minimum risk. I have not yet looked into btrfs, they do raid5 as well right? But all this is far down the road, off course I'll send RFCs first. The above push is just for that unique objects groups/striping/mirroring, which is very small code, a couple of functions actually, over the basic IO. Thanks for asking, though. Boaz