Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752504AbdLDUIJ (ORCPT ); Mon, 4 Dec 2017 15:08:09 -0500 Received: from mail-vk0-f68.google.com ([209.85.213.68]:44426 "EHLO mail-vk0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751522AbdLDUIF (ORCPT ); Mon, 4 Dec 2017 15:08:05 -0500 X-Google-Smtp-Source: AGs4zMY+SkebMOFYyVCw6zdAXV+8BjtgxBz0peueMAdhs9+3BnswQI99AAzbLjeuvD1l29GfWJiwKg== Date: Mon, 4 Dec 2017 12:07:56 -0800 From: Tejun Heo To: Kirill Tkhai Cc: axboe@kernel.dk, bcrl@kvack.org, viro@zeniv.linux.org.uk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-aio@kvack.org, oleg@redhat.com Subject: Re: [PATCH 0/5] blkcg: Limit maximum number of aio requests available for cgroup Message-ID: <20171204200756.GC2421075@devbig577.frc2.facebook.com> References: <151240305010.10164.15584502480037205018.stgit@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <151240305010.10164.15584502480037205018.stgit@localhost.localdomain> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 395 Lines: 14 Hello, Kirill. On Mon, Dec 04, 2017 at 07:12:51PM +0300, Kirill Tkhai wrote: > this patch set introduces accounting aio_nr and aio_max_nr per blkio cgroup. > It may be used to limit number of aio requests, which are available for > a cgroup, and could be useful for containers. Can you please explain how this is a fundamental resource which can't be controlled otherwise? Thanks. -- tejun