Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760379AbZDSG2U (ORCPT ); Sun, 19 Apr 2009 02:28:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755950AbZDSG2G (ORCPT ); Sun, 19 Apr 2009 02:28:06 -0400 Received: from cantor2.suse.de ([195.135.220.15]:58166 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755410AbZDSG2D (ORCPT ); Sun, 19 Apr 2009 02:28:03 -0400 From: Neil Brown To: "H. Peter Anvin" , "Matti Aarnio" , "Jesper Juhl" , "Prakash Punnoor" , "Michael Tokarev" , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org Date: Sun, 19 Apr 2009 16:28:11 +1000 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18922.50299.133847.743973@notabene.brown> Subject: Re: Proposal: make RAID6 code optional In-Reply-To: message from NeilBrown on Sunday April 19 References: <200904180946.27722.prakash@punnoor.de> <49E98AD2.8060601@msgid.tls.msk.ru> <200904181117.03418.prakash@punnoor.de> <20090418145850.GD28512@mea-ext.zmailer.org> <49EA8766.9070605@zytor.com> <2954ad7f6081b2a6da33f861b0654626.squirrel@neil.brown.name> X-Mailer: VM 7.19 under Emacs 21.4.1 X-face: [Gw_3E*Gng}4rRrKRYotwlE?.2|**#s9D X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 849 Lines: 22 On Sunday April 19, neilb@suse.de wrote: > > In 2.6.30, the Q syndrome code has been moved into a separate module, > so raid456.ko should be quite a bit smaller. Of course that doesn't really help as there will be a dependency between raid456.ko and pq.ko so you cannot avoid having pq.ko loaded while using raid5. It might make sense to create a raid6 module that just contains The call to register_md_personality(raid6_personality) and some linkage so that the code in raid456.ko can get to the code in pq.ko. This is probably worth trying one the raid6 async offload stuff stabilises. NeilBrown -- 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/