From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754451AbbAURho (ORCPT ); Wed, 21 Jan 2015 12:37:44 -0500 Received: from mail-pa0-f52.google.com ([209.85.220.52]:39286 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753872AbbAURhg (ORCPT ); Wed, 21 Jan 2015 12:37:36 -0500 Message-ID: <54BFE3DC.4050101@kernel.dk> Date: Wed, 21 Jan 2015 10:37:32 -0700 From: Jens Axboe User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Jeff Moyer , linux-kernel@vger.kernel.org Subject: Re: [patch] cfq-iosched: fix incorrect filing of rt async cfqq References: In-Reply-To: Content-Type: text/plain; charset=iso-2022-jp Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/12/2015 01:21 PM, Jeff Moyer wrote: > Hi, > > If you can manage to submit an async write as the first async I/O from > the context of a process with realtime scheduling priority, then a > cfq_queue is allocated, but filed into the wrong async_cfqq bucket. It > ends up in the best effort array, but actually has realtime I/O > scheduling priority set in cfqq->ioprio. Applied, thanks Jeff. I've added a stable tag to it as well. -- Jens Axboe