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 80C2CC433FE for ; Tue, 8 Dec 2020 00:14:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E35A23A22 for ; Tue, 8 Dec 2020 00:14:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728495AbgLHAOm (ORCPT ); Mon, 7 Dec 2020 19:14:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727218AbgLHAOm (ORCPT ); Mon, 7 Dec 2020 19:14:42 -0500 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFEE9C061257 for ; Mon, 7 Dec 2020 16:13:18 -0800 (PST) Received: by mail-pg1-x542.google.com with SMTP id g18so10564373pgk.1 for ; Mon, 07 Dec 2020 16:13:18 -0800 (PST) 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=dc3t9mRBpnlT44bCLhGzwWThsrC3gxEqUeJxmxZZ+lk=; b=xsirvh8ATlDyuCU+cX8nhCJ8eA24b5LLLk7M3C7wX0+d3uwYveTYpU5TpRd1x1IyPv hnaAveAfnRZ5Ce+nrl9/Nxt94ehpdMHVdHahwkZ7sfJAPR0ECdxqHFZaBnEYBX1n3oDs Rp52vz7lvJWg7JKFsdZIIt2TrS3bb54frwm+2juNKE1+mn31NKqrK4N0mj/fmIw7HE1h gvWPBaDxtIN/IzJ4vXr8mojoCyLQPEFprgtw5o8vEgODyyKpvxEfIWP29X3xnYYlPcNx xnv8bIjKmEBMOYblSUsNLG3OShkl7+iuDo4cjCcdziRIp5hNwYpCTTMgngmW1mn+dAdQ S6OQ== 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=dc3t9mRBpnlT44bCLhGzwWThsrC3gxEqUeJxmxZZ+lk=; b=S+/qFDl7QmnMZdN+9G2niJqTVvF1kbpZO6rLN931TL2plcQvOh0Snijzh0OLCDGCWf GcMuoRE07B9BhBirJUIhQ5pjqlg0iLopA5RscN9iBtlu2m8gOs/zrth5RLCfh8hBF+5+ pcjaI/m4Vjif/e2lrLhK82WvBaQHdmrFygmPSBpeCO1onZa3HHPpXcf4kf5bOlxfVe7y nXFKfm2u4P57CFUwdqUmI385L1E2xBOWM/gpEFzOFoGHlDUr7DzEixgVDPsSEggAkvJL L6qIpGwm17ULUqOR7wWExNdlQ94ZvzOlAgMniYqpi//FJlqlFhMTa8qBghBZRMefto9u Y9OQ== X-Gm-Message-State: AOAM531Y06sgc8GyfSQDbOksbLJARwzKCeuF/YnHxlvXmr35Fr9r+NBy ed5+tz5t+g1R1/yRHTsAolLhaZscL4bE1g== X-Google-Smtp-Source: ABdhPJzcYjIjGcWM85g3oUzqjlr5TcChOclvb0wo6EHyZavtmXqLSW/ZEQ0BdaW6sx47Tz71feoFAA== X-Received: by 2002:a17:90a:7842:: with SMTP id y2mr1335115pjl.36.1607386398251; Mon, 07 Dec 2020 16:13:18 -0800 (PST) Received: from [192.168.1.134] ([66.219.217.173]) by smtp.gmail.com with ESMTPSA id gz2sm522596pjb.2.2020.12.07.16.13.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 07 Dec 2020 16:13:17 -0800 (PST) Subject: Re: [PATCH v2 for-next 0/4] optimise sbitmap deferred clear To: Pavel Begunkov , linux-block@vger.kernel.org, Omar Sandoval Cc: linux-kernel@vger.kernel.org References: From: Jens Axboe Message-ID: <5ebc2f40-201a-3617-f521-66e894de95fd@kernel.dk> Date: Mon, 7 Dec 2020 17:13:16 -0700 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: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/22/20 8:35 AM, Pavel Begunkov wrote: > sbitmap takes away some cycles for my tag-deficient test, removal of > locking in sbitmap_deferred_clear() gives +~1% throuhput. > > [1/4] and [4/4] are simple, it'd be great if someone could double > check for ordering issues for other two patches. > > v2: add 3rd (CAS -> atomic and) and 4th patches Applied, thanks. -- Jens Axboe