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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 452BCC433E0 for ; Mon, 25 May 2020 12:34:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1643A207C3 for ; Mon, 25 May 2020 12:34:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yandex-team.ru header.i=@yandex-team.ru header.b="yMuAin8O" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390576AbgEYMe2 (ORCPT ); Mon, 25 May 2020 08:34:28 -0400 Received: from forwardcorp1j.mail.yandex.net ([5.45.199.163]:50808 "EHLO forwardcorp1j.mail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390488AbgEYMe0 (ORCPT ); Mon, 25 May 2020 08:34:26 -0400 Received: from mxbackcorp1j.mail.yandex.net (mxbackcorp1j.mail.yandex.net [IPv6:2a02:6b8:0:1619::162]) by forwardcorp1j.mail.yandex.net (Yandex) with ESMTP id C52572E1499; Mon, 25 May 2020 15:34:23 +0300 (MSK) Received: from iva8-88b7aa9dc799.qloud-c.yandex.net (iva8-88b7aa9dc799.qloud-c.yandex.net [2a02:6b8:c0c:77a0:0:640:88b7:aa9d]) by mxbackcorp1j.mail.yandex.net (mxbackcorp/Yandex) with ESMTP id ZJIXPPS6z9-YLTi9Z9T; Mon, 25 May 2020 15:34:23 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1590410063; bh=ai4SFAnq/6nSINx/FBKSEuSs6VEDwe9CKXW2LSyg3rA=; h=In-Reply-To:Message-ID:From:Date:References:To:Subject:Cc; b=yMuAin8OkKoPyA6fM61Kd5gq/kMQik8QtpCqmqv1ySlA0gbKNgjehnM/Avo4jesLA 1NJfntE9wrGKJwo4Sk3LwQYzT/Ut83m1kxlcVbmccuRAiCW947q9+smxOC+ZIq8b+K PGM0Lk7vsx2iw92s7aN1ayw2f6hxBIH5GbKWN1pU= Authentication-Results: mxbackcorp1j.mail.yandex.net; dkim=pass header.i=@yandex-team.ru Received: from dynamic-vpn.dhcp.yndx.net (dynamic-vpn.dhcp.yndx.net [2a02:6b8:b081:603::1:c]) by iva8-88b7aa9dc799.qloud-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id O3BMKGQlP9-YLXqqoTf; Mon, 25 May 2020 15:34:21 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) Subject: Re: block I/O accounting improvements To: Christoph Hellwig , Jens Axboe Cc: Minchan Kim , Nitin Gupta , dm-devel@redhat.com, linux-block@vger.kernel.org, drbd-dev@lists.linbit.com, linux-bcache@vger.kernel.org, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org References: <20200525113014.345997-1-hch@lst.de> From: Konstantin Khlebnikov Message-ID: <81f4057b-124a-d0e7-94af-15a198d48d50@yandex-team.ru> Date: Mon, 25 May 2020 15:34:21 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200525113014.345997-1-hch@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-CA Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 25/05/2020 14.29, Christoph Hellwig wrote: > Hi Jens, > > they series contains various improvement for block I/O accounting. The > first bunch of patches switch the bio based drivers to better accounting > helpers compared to the current mess. The end contains a fix and various > performanc improvements. Most of this comes from a series Konstantin > sent a few weeks ago, rebased on changes that landed in your tree since > and my change to always use the percpu version of the disk stats. > Thanks for picking this up. One note about possible further improvement in reply to first patch. Reviewed-by: Konstantin Khlebnikov