Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758295Ab2EASuH (ORCPT ); Tue, 1 May 2012 14:50:07 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60558 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757947Ab2EASuF (ORCPT ); Tue, 1 May 2012 14:50:05 -0400 From: Jeff Moyer To: Jens Axboe Cc: Tejun Heo , Dave Jones , "linux-kernel\@vger.kernel.org" , Sasha Levin Subject: Re: [PATCH v3.4-rc5] block: iocontext->nr_tasks should be initialized to one References: <1335873936.16988.148.camel@lappy> <20120501161729.GV26595@google.com> <4FA0253F.4000302@fusionio.com> <20120501180906.GX26595@google.com> <4FA028EE.7020208@fusionio.com> <4FA02D71.3060001@fusionio.com> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Tue, 01 May 2012 14:50:00 -0400 In-Reply-To: <4FA02D71.3060001@fusionio.com> (Jens Axboe's message of "Tue, 1 May 2012 20:37:37 +0200") Message-ID: User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 751 Lines: 19 Jens Axboe writes: > On 2012-05-01 20:31, Jeff Moyer wrote: >> Jens Axboe writes: >> I know of one project: the venerable dump/restore utility uses CLONE_IO. > > Thanks Jeff, now I remember the specifics of what we tested. IIRC, we > also did numbers back then comparing the coop merging vs specifically > using CLONE_IO. Maybe? I picked through some old emails but couldn't find that exact comparison. It would have been a smart thing to do, though! -Jeff -- 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/