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=-5.5 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 B1AB9C433E7 for ; Thu, 16 Jul 2020 16:23:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A8C720739 for ; Thu, 16 Jul 2020 16:23:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="VGM5EjPM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729312AbgGPQXJ (ORCPT ); Thu, 16 Jul 2020 12:23:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729048AbgGPQXI (ORCPT ); Thu, 16 Jul 2020 12:23:08 -0400 Received: from mail-io1-xd42.google.com (mail-io1-xd42.google.com [IPv6:2607:f8b0:4864:20::d42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88D01C08C5C0 for ; Thu, 16 Jul 2020 09:23:08 -0700 (PDT) Received: by mail-io1-xd42.google.com with SMTP id i4so6598306iov.11 for ; Thu, 16 Jul 2020 09:23:08 -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=o7vioyeJtfXqaTWC1ftoXXX0ZgNVC9TTmnLN+3HE5V4=; b=VGM5EjPMF4BqA3SwlPSDwN3f+adgl4wg4lh9udMmdtl358whUIMCyswJrhvtCH7xSI /2yx6LDdu/NtF41wa28Bp8WWOzadGkO4pEThHXJ10ZMgjAX888U8cDwmRNTBJSWus6RT oPRAfva/AQiI/qzf8ZjdoKuYaZ3d1Y9Zp6CRiyHGl5nA1rDNoUewL4sEj/LuXjJ9sEno 3J8dMDpgjK1UBNSLrIsutgXkd7MNRHuBA4PjP1HQL+09exc1rHP9obnJzk3XHy6itbxT 4BCwnsrlcaIfEZ/6XN0WHAaHn710vbuPPn/unut+HbKYtyRNcE/GS1E40pl0zHoDK6+n r8ZA== 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=o7vioyeJtfXqaTWC1ftoXXX0ZgNVC9TTmnLN+3HE5V4=; b=QVxCIe0rukOIoEVcX8PGIn00zdXCuDSYaP47ovX/1af9DJqGXVv5/AJyA1YwZ2YoHQ UA4XE7SfzIek4tgNRLweNN+vlHldI2BpuFAk4iHZoTLzNZfEt5e9sBDGx72eQ31SCLUW yOc82AY4RcGkuTnmX/EgtVnDAf+cx/r2ywj1s8UkXmWluwfG0MB3nG3SK7JwkjkbZQuy 6UyATxHx3SSjK2BFKJeVhBfEtx+4IiVgJnmcaTZqMKB5sL3Fpbdch89xWoyqetguYC2K htYbYk29kjFAnUd5Xd42puzglREopRXJDIMjsdgFOX5DhGKDe9HuZiIMLvpnnpgJ6Lvl G2Gg== X-Gm-Message-State: AOAM5306FEdOqcuOCNS/KpYHV1vE6aCnonGYA23CNwX23OPO9uS80DiE lAW4hQ831AwZCpb5VIDmUfPkO5Hpu38rog== X-Google-Smtp-Source: ABdhPJw2BMCa8GFE43BTcssRj6BBZCeaVh37+lnCXadsVSvr/R0cL9+H3bsiraMAlTvn9FCQdjCmbw== X-Received: by 2002:a6b:2c1:: with SMTP id 184mr5135872ioc.167.1594916587715; Thu, 16 Jul 2020 09:23:07 -0700 (PDT) Received: from [192.168.1.58] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id p124sm2963526iod.32.2020.07.16.09.23.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Jul 2020 09:23:07 -0700 (PDT) Subject: Re: [PATCH 0/2] block: remove retry loop To: John Ogness Cc: Sebastian Andrzej Siewior , Thomas Gleixner , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200619151718.22338-1-john.ogness@linutronix.de> From: Jens Axboe Message-ID: Date: Thu, 16 Jul 2020 10:23:05 -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: <20200619151718.22338-1-john.ogness@linutronix.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/19/20 9:17 AM, John Ogness wrote: > Hello, > > This series removes a retry loop in the ioc reverse-order > double lock dance, replacing it with an implementation that > uses guaranteed forward progress. > > While at it, it also removes the nested spinlock usage, > which no longer applies since CFQ is gone. Applied for 5.9, thanks. -- Jens Axboe