Received: by 2002:a05:6358:16cc:b0:ea:6187:17c9 with SMTP id r12csp1312442rwl; Thu, 5 Jan 2023 11:39:12 -0800 (PST) X-Google-Smtp-Source: AMrXdXsT/M976jZWbzzEZmleQq4PuASrWxAudSBrezyeMhXGcDnU7/KaZwYsAxkGMWj4Rn5Gf7YU X-Received: by 2002:a17:906:9f28:b0:7c1:5b5e:4d85 with SMTP id fy40-20020a1709069f2800b007c15b5e4d85mr42828264ejc.51.1672947552733; Thu, 05 Jan 2023 11:39:12 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1672947552; cv=none; d=google.com; s=arc-20160816; b=vmlUbggWBg16AVIsfKJK3gI3mNNRq6+AFhl8r7FzWtU66I1C6s7oCA4Kbq+Hcdr8ba dEwR4zIV25HvvXn5/kWw3EBdG/YMnTnsjOZd5PgmVl81pwHcSG2iagogKzZNCBrkEOmX 7AFlTL72H5RkAQC9LEkwjhRYPqLnd9YCZKB67smUBi0BJumSWawMDVCzLDmv4WaLkC98 ze5xjr69niiPWmQmr+WVQbXlbppMcfGiQeuj0/OY08BJVufbbi/t5JAI7OhOb1a1uloo vJLMR5+gjle1SHu28EDQnuStT602Skf8NmJd0W0dvMBIfcRheKHMGHIrXgACQkNYAuZD azig== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:sender:dkim-signature; bh=zq1H+uB2+TPFwR7JPq5kiGxVeV7Cch9Igvb+l9VMkoU=; b=1EulDz7tRmL9jYwgvX4uNaI8dR1yTWMEOdhJ0Gag0vjVQy+ByqWBHSTFtKqVrHuknO A3SAz/5LhH5bgaW1AWt+fwx+2Ac2Dl2CkaNbCr/6IE7HQkXeCf+Z7IvE1d9G9upOzWjL ON4wTxE9cxZYNJVxQhwO6LTQ8Fd7ad1yy/pcwDn9+ey0J0lnmV+EHnaa1qA6VwLubzE/ 9zWuKKBUGyDvGRbmYqhLdQjTWS6HJ7XlOi91GKty58HMr7bebp6LWI8hF7tYhNHaU8ML BZoy6j8xk5lVpK8ToOWR0im3JUh/pjsGiXWKNWLwLKRBBiyhS+vMwxzGRlSwrz7g+Z+G o6ZQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=GhGjZD9B; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id hs11-20020a1709073e8b00b007aec7f879basi33558184ejc.22.2023.01.05.11.38.58; Thu, 05 Jan 2023 11:39:12 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=GhGjZD9B; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235088AbjAES43 (ORCPT + 55 others); Thu, 5 Jan 2023 13:56:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235058AbjAES41 (ORCPT ); Thu, 5 Jan 2023 13:56:27 -0500 Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08B5838AC0; Thu, 5 Jan 2023 10:56:26 -0800 (PST) Received: by mail-pj1-x1033.google.com with SMTP id v23so40807124pju.3; Thu, 05 Jan 2023 10:56:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:from:to:cc:subject:date:message-id :reply-to; bh=zq1H+uB2+TPFwR7JPq5kiGxVeV7Cch9Igvb+l9VMkoU=; b=GhGjZD9BB3QbgnyPJCaaoMELJWaEY6VztHanVKgGEBXsSyHxLHHPZ/IJ9hH6X/l4WM 9fq6OtuN5sKeR7SAkmrJU2UVPDb/Hdx4C4Qsm+opMN4VdE9eVtrPzM1CbSm5AB6mRr0a VV2dYenznVMFEHLCN7RTQ3/8g9Ktky8JtMO0N+aHLa6FzrqPoS0LXu373YMJ+e9hcu/u Z7KX3oC07Sa3qCZtkGANw1HceMDAaOcwvvvH/byHu31frsz8zNZg/e43biYqVSDeyZWr 98fVK7jPmddHpJz+FY51Kq+yaOLKEQeT6vwHob+gJxmTRZqEZXTkkIjpkjTh/LkdO5yW QGnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zq1H+uB2+TPFwR7JPq5kiGxVeV7Cch9Igvb+l9VMkoU=; b=U+OXIr9r+XgSVm6FBNMZuunzjxpbbkax0/pXQHualnR7DjMbUWQyxFX7obQsIsVa2G FvaDx2+UuiAfJZHoBRcDprPnalz1b6U+Q5ajuvccrM1GDzZrjNfXtxyCG+DFN+SepBbl 7rjMKdlHLEukJu4VCrQUAHn1YAgCkvaR6y+lOW3yM8Zy/mQYlmiSN2vkSCJV4jmYpes3 thsVR7pisbCSCIMVmTZxHevcyYJYikIhsYp30l7SJ1+PzkbMhrKBVVZSZl8fq3ppVTB5 FduQ9N2bhYUmIZGrPXmZbqQYyM8e9T+vGejOBAb2uJRnqIjSz220iWn6+w7nC3DNaTgD VfBQ== X-Gm-Message-State: AFqh2krYENB/5XHkRjXJEBSxvHTN2bjrj1MSopu6rQSWRPzE4EYL9tIZ GJaZ4v59ZR45K4JlLzn+6cc= X-Received: by 2002:a17:902:ccce:b0:189:e577:c83e with SMTP id z14-20020a170902ccce00b00189e577c83emr62761826ple.36.1672944985441; Thu, 05 Jan 2023 10:56:25 -0800 (PST) Received: from localhost (2603-800c-1a02-1bae-a7fa-157f-969a-4cde.res6.spectrum.com. [2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id b14-20020a170903228e00b00192e7269af1sm3764350plh.253.2023.01.05.10.56.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Jan 2023 10:56:24 -0800 (PST) Sender: Tejun Heo Date: Thu, 5 Jan 2023 08:56:23 -1000 From: Tejun Heo To: axboe@kernel.dk, josef@toxicpanda.com, hch@lst.de Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHSET block/for-next] blkcg: Improve blkg config helpers and make iolatency init lazy Message-ID: References: <20230105002007.157497-1-tj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230105002007.157497-1-tj@kernel.org> X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 04, 2023 at 02:20:03PM -1000, Tejun Heo wrote: > Hello, > > * Improve blkg config helpers so that they can be used consistently for all > the existing use cases. This also allows keeps using the same bdev open > instance across lazy init of rq_qos policies. > > * Update iolatency so that it initializes lazily when a latency target is > set for the first time. This avoids registering the rq_qos policy when > iolatency is not used which removes unnecessary calls into iolat from IO > hot paths. I forgot to update bfq. Will post v2 soon. Thanks. -- tejun