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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E43BEC4708E for ; Thu, 5 Jan 2023 18:56:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235230AbjAES4a (ORCPT ); Thu, 5 Jan 2023 13:56:30 -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-Google-Smtp-Source: AMrXdXsm1ZesheS5aaRquP+/qq4vvR+aTui9k5ETx9QVJ82Wf3o+MeYG325HuUvJ/BxY8vEaHZUewg== 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> 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