Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757050AbZDQAW2 (ORCPT ); Thu, 16 Apr 2009 20:22:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752573AbZDQAWT (ORCPT ); Thu, 16 Apr 2009 20:22:19 -0400 Received: from fgwmail7.fujitsu.co.jp ([192.51.44.37]:52660 "EHLO fgwmail7.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751966AbZDQAWS (ORCPT ); Thu, 16 Apr 2009 20:22:18 -0400 Date: Fri, 17 Apr 2009 09:20:40 +0900 From: KAMEZAWA Hiroyuki To: Andrew Morton Cc: Andrea Righi , menage@google.com, balbir@linux.vnet.ibm.com, guijianfeng@cn.fujitsu.com, agk@sourceware.org, axboe@kernel.dk, baramsori72@gmail.com, chlunde@ping.uio.no, dave@linux.vnet.ibm.com, dpshah@google.com, eric.rannaud@gmail.com, fernando@oss.ntt.co.jp, taka@valinux.co.jp, lizf@cn.fujitsu.com, matt@bluehost.com, dradford@bluehost.com, ngupta@google.com, randy.dunlap@oracle.com, roberto@unbit.it, ryov@valinux.co.jp, s-uchida@ap.jp.nec.com, subrata@linux.vnet.ibm.com, yoshikawa.takuya@oss.ntt.co.jp, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/9] bio-cgroup controller Message-Id: <20090417092040.1c832c69.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20090416152937.b2188370.akpm@linux-foundation.org> References: <1239740480-28125-1-git-send-email-righi.andrea@gmail.com> <1239740480-28125-4-git-send-email-righi.andrea@gmail.com> <20090416152937.b2188370.akpm@linux-foundation.org> Organization: FUJITSU Co. LTD. X-Mailer: Sylpheed 2.5.0 (GTK+ 2.10.14; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1640 Lines: 48 On Thu, 16 Apr 2009 15:29:37 -0700 Andrew Morton wrote: > On Tue, 14 Apr 2009 22:21:14 +0200 > Andrea Righi wrote: > > > Subject: [PATCH 3/9] bio-cgroup controller > > Sorry, but I have to register extreme distress at the name of this. > The term "bio" is well-established in the kernel and here we have a new > definition for the same term: "block I/O". > > "bio" was a fine term for you to have chosen from the user's > perspective, but from the kernel developer perspective it is quite > horrid. The patch adds a vast number of new symbols all into the > existing "bio_" namespace, many of which aren't related to `struct bio' > at all. > > At least, I think that's what's happening. Perhaps the controller > really _is_ designed to track `struct bio'? If so, that's an odd thing > to tell userspace about. > Hmm, how about iotrack-cgroup ? Thanks, -Kame > > > The controller bio-cgroup is used by io-throttle to track writeback IO > > and for properly apply throttling. > > Presumably it tracks all forms of block-based I/O and not just delayed > writeback. > > > -- > 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/ > -- 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/