From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265332AbUEUHqm (ORCPT ); Fri, 21 May 2004 03:46:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265419AbUEUHqm (ORCPT ); Fri, 21 May 2004 03:46:42 -0400 Received: from outmx010.isp.belgacom.be ([195.238.3.233]:705 "EHLO outmx010.isp.belgacom.be") by vger.kernel.org with ESMTP id S265332AbUEUHqk (ORCPT ); Fri, 21 May 2004 03:46:40 -0400 Subject: Re: [2.6.6-mm4-ff1] I/O context isolation From: FabF To: Nick Piggin Cc: axboe@suse.de, linux-kernel In-Reply-To: <40ADB20C.8090204@yahoo.com.au> References: <1085124268.8064.15.camel@bluerhyme.real3> <40ADB20C.8090204@yahoo.com.au> Content-Type: text/plain Message-Id: <1085125564.8071.23.camel@bluerhyme.real3> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Fri, 21 May 2004 09:46:04 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2004-05-21 at 09:38, Nick Piggin wrote: > FabF wrote: > > Jens, > > > > Here's ff1 patchset to have generic I/O context. > > ff1 : Export io context operations from blkdev/ll_rw_blk (ok) > > ff2 : Make io_context generic plateform by importing IO stuff from > > as_io. > > > > Can I just ask why you want as_io_context in generic code? > It is currently nicely hidden away in as-iosched.c where > nobody else needs to ever see it. I do want I/O context to be generic not the whole as_io. That export should bring: -All elevators to use io_context -source tree to be more self-explanatory -have a stronger elevator interface > > > AFAICS, cfq_queue for instance could disappear when using io_context > > but I think elv_data should remain elevator side.... > > I don't want to go in the wild here so if you've got suggestions, don't > > hesitate ;) > > > > cfq_queue is per-queue-per-process. io_context is just > per-process, so it isn't a trivial replacement. But I guess we can merge that stuff to have "a one way, one place" code rather than repeat code in all elv. Regards, FabF