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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, 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 A63B9C433B4 for ; Mon, 26 Apr 2021 17:18:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5F6D0610A2 for ; Mon, 26 Apr 2021 17:18:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235308AbhDZRTG (ORCPT ); Mon, 26 Apr 2021 13:19:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234703AbhDZRTF (ORCPT ); Mon, 26 Apr 2021 13:19:05 -0400 Received: from mail-il1-x12d.google.com (mail-il1-x12d.google.com [IPv6:2607:f8b0:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9756C061756 for ; Mon, 26 Apr 2021 10:18:23 -0700 (PDT) Received: by mail-il1-x12d.google.com with SMTP id c3so1052762ils.5 for ; Mon, 26 Apr 2021 10:18:23 -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=AxkKTuRTwJPgdbALDNSex6+V1PllqCVivdIpcpLUoWI=; b=Zbxks/KufSJccFgUWsuKnSdfP0p5yutHTZBJtfwBXSQauTAagYAUbKfmTXM+HopPBP 8YiYFpHY3R8pbS7YQQe0qYggrwgzkYpvGn/jPQBldWNusaVRd0wXojx2pTTQrfdsAw60 cxbUSfew9bRZkIUZNxt/uOc+z55R/2MJn9a64OetGYOr27RpLABCrqfA+PfHWjbz0WZk AYMjsiI0b0YG+rZjz8IGxczmY2Wed1mId1ZCFxoUSu3XlvubarnHmgz1UvcA/mZptD/h cdxi6M3nko/QjcITaYyocXZDX5KwriUe8/iDeIAkuQMs5frg+hV4UFYB01VWgGHIUxrJ o0qQ== 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=AxkKTuRTwJPgdbALDNSex6+V1PllqCVivdIpcpLUoWI=; b=OmWW3IYrrBON2W0BZH7xhfouijBOYHjHoB5SbL5MoAcv/zMc6rw31SoRxQRu4GoRYS icXyGehEY0i5oA+OUuROgn3879PCdXobqb6c5f73SrbAeh2yZZd4ODLz+q1dUoS0OUz4 t77cVnd0kei4jNrDLzYMR57Gclgm2uYp193lo5rGxz1XfL0WxI8BZXbDLkYx3P1XmD0c r/cPDSAF7j8DaSPSXicqsHDYyY+UDfpFSooKMYf6YeXky4P2KhHbFAlwC5crjxrnM5s1 XtmC7kRU6BasvHir1omj6+1/tFsM1AT/y7GvkKHJMb/gx2Yl7UJEn8ZJzrWzw6Z0k1tE tw4A== X-Gm-Message-State: AOAM530KYYTJLe2ylrfYB9V2B3QX1wh48VMn3UdD8ffcHkSIpio7rwiT LRJB4HgdKhmmMMXP1tfzTR92um8LCHSRkg== X-Google-Smtp-Source: ABdhPJzzByfqQal+7IdJWmviqRcpDsE1o8kjGOsh8wkQBIZlM0mK9H9C+Wmeu9Cs8pt5zm2OnW//wg== X-Received: by 2002:a05:6e02:5a2:: with SMTP id k2mr15151182ils.177.1619457502866; Mon, 26 Apr 2021 10:18:22 -0700 (PDT) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id a11sm194486ilj.22.2021.04.26.10.18.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 26 Apr 2021 10:18:22 -0700 (PDT) Subject: Re: switch block layer polling to a bio based model To: Christoph Hellwig Cc: Jeffle Xu , Ming Lei , Damien Le Moal , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org References: <20210426134821.2191160-1-hch@lst.de> <2d229167-f56d-583b-569c-166c97ce2e71@kernel.dk> <20210426170516.GA1443@lst.de> From: Jens Axboe Message-ID: <3bd0ff91-6613-8da5-810f-f23baa9d94c7@kernel.dk> Date: Mon, 26 Apr 2021 11:18:21 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210426170516.GA1443@lst.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 4/26/21 11:05 AM, Christoph Hellwig wrote: > Can you test the force pushed update? This now avoids the RCU free > for each bio and just uses SLAB_TYPESAFE_BY_RCU instead. That looks better, perf is now back where it is without the series. At least according to usual variation within boots. -- Jens Axboe