From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 466CBC04ABB for ; Tue, 11 Sep 2018 16:09:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 020C72086E for ; Tue, 11 Sep 2018 16:09:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="zNhboszU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 020C72086E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727697AbeIKVJq (ORCPT ); Tue, 11 Sep 2018 17:09:46 -0400 Received: from mail-it0-f53.google.com ([209.85.214.53]:54677 "EHLO mail-it0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726782AbeIKVJq (ORCPT ); Tue, 11 Sep 2018 17:09:46 -0400 Received: by mail-it0-f53.google.com with SMTP id f14-v6so2242651ita.4 for ; Tue, 11 Sep 2018 09:09:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=jaXivJsbzz2/ySp9Pn2vm8UYo2jihQfrKBFbnzPQaBA=; b=zNhboszUxSeoFyAh1K6YirRmvDbqA2uUZHG0rxq07a9X0rU2vaoKgugrRx+1Mi874J 6fRz7Frd5ZwqDBj/9Q5S8pk3CKukeLQNI/3h/IKR1nWhbseBgl/mx4ZHlS4OFktso5tZ hgSpojJTn2uBWcX4hz+ISJklaTC53gpvuEvqaOFh0uuIVS54QXOvH0x3TuxXquoQJgEK iGXweBq31oT06xORYrlyZtXneNkrq4DIxxjnrXLJTDcfxGk64pwsI9TGpVJQr5AQ4+NO j+AXWfR6OYafqZ2/022nO3ynNlITMMFIR7arkFiqreO9u5LCVKZ99EVz0M+yhOJWY6pV v55g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=jaXivJsbzz2/ySp9Pn2vm8UYo2jihQfrKBFbnzPQaBA=; b=quSk6cNNKIgkqR1vEpikKIzTZRXccrPS1ltECd1KdfmT0lvJ201+mQ81T/BaI7fIJo 28yGhNIpkTvgqkXNrs3KYjaysVEDV78XLLJx71Ffp1UbkW0KVmY42AlFQZMSHbeKYEwj 4JJbOMSgOij99jIf0FjpDwYudzdSTuorVxeKzCQrkXI9xVdaXeOCEM3hLM/NX5aIbAjK QUFCq7hYS+3W0DSCI5tPvmTPtOCxZINezG1KjAZ+Ci8w5nX0PJckr+AZh8Iijx8V3JlF pwB3BqpS+sPgM321q7hLJYo79NEtYjWqb2HvyABnQey0D2iUNBOEc+UQGATrp14MjSUC GQvA== X-Gm-Message-State: APzg51DblGvqTWPw/Jh8DtTPctJA75AR0P9MhzhMC6I4k6bEVBu6EUm5 VAUwtiaE6INO5Lu5WJBJUQn6DFFXGm0= X-Google-Smtp-Source: ANB0Vda8RmND8GwhG+uvPelsiJ9T0whmnOA2gP0U2vmr/nwOvLPpU68dvmoUe4uAWqmpfQ/tb+NNRw== X-Received: by 2002:a24:c984:: with SMTP id h126-v6mr2120273itg.33.1536682186761; Tue, 11 Sep 2018 09:09:46 -0700 (PDT) Received: from [192.168.1.212] (107.191.0.22.static.utbb.net. [107.191.0.22]) by smtp.gmail.com with ESMTPSA id 14-v6sm530676ity.8.2018.09.11.09.09.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Sep 2018 09:09:45 -0700 (PDT) Subject: Re: [REGRESSION] bfq probe failed on 4.19-rc3 To: Takashi Iwai , Paolo Valente Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org References: From: Jens Axboe Message-ID: <8b5a7dc9-2dc1-16ee-4b05-a72eb6680c77@kernel.dk> Date: Tue, 11 Sep 2018 10:09:44 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/11/18 10:03 AM, Takashi Iwai wrote: > Hi, > > I noticed that bfq doesn't appear in the I/O scheduler list on > 4.19-rc3. It seems that blkcg_policy_register() at the beginning of > bfq_init() returns -ENOSPC, hence the probe aborts silently. > > Is this already addressed? Haven't heard about this one before. What kernel did you last use that worked? -- Jens Axboe