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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, 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 E9900C33CB6 for ; Fri, 17 Jan 2020 02:59:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C2D6B2072B for ; Fri, 17 Jan 2020 02:59:22 +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="P+rBwBwh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389054AbgAQC7W (ORCPT ); Thu, 16 Jan 2020 21:59:22 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:44250 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389015AbgAQC7U (ORCPT ); Thu, 16 Jan 2020 21:59:20 -0500 Received: by mail-pg1-f196.google.com with SMTP id x7so10908891pgl.11 for ; Thu, 16 Jan 2020 18:59:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=WTJDQFAFgGa6rVA6Vls+B5d28T5A6XlmnE+ynC7RqWg=; b=P+rBwBwh3nYihg8kJTLr1bcuK7nKVCFuRWmXjcgoKle43XZswMOHTvDAMl2MxzVMwK fNitoQqWekzXfyYNFbeKHQaUgQw1fYvA1CqNqa8ICJXYH8cgzX13KOySiKOPOg1a++km JS635mIgS+7FehmcH36CcfND80cPEwC4TaOh4YVn+jVfEac3+LOoGDKqqjZRIUh+IhCS GeYsAdzbomNobynrJNgmCEd3UH4PX3CNz+O67LeelHN/14Osz9WDJGu8gg/sdZCZO3n7 gH+t9jA8wut7XqYqvaDH3kVS8v0m2x0nID40hEODj2v0OdRfWJhx5uN/T/wO9h9iqHbT 1OdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=WTJDQFAFgGa6rVA6Vls+B5d28T5A6XlmnE+ynC7RqWg=; b=YOu0sdEy0kf9bqmIcVJ/AxQUnTY3D6mYiKMH58KNy8CSKyX2zc7SgFsfjZU+w8BS1h SKQLI87nfdzmjUHI/EnGeiP7DLgKtUrO0QCPzbpRE6tkeQKLQsAjHRkrq+r1nZpaoOcN f0NUX6l2UI7fHRtrniJdZJN8SSS/30hrL+PpiVrA/5YezukSx7/jO9y5E03yZUxZ/akO ad4WUyY5nvFNJGURjdoDoICyIQG6bzC9g3JzoUj2WXMI8GhJw7lcUy9DcCoFNcrD37EN Dese2zuCpfQoWDEAgYqJvnXGfuo/G0bVt/SM7nv9BO4HEkm5IXrcrcNp0Ao+Ix/oIKG3 XPgQ== X-Gm-Message-State: APjAAAVA6P607MLPbuX1Y13VY+dp3s+nqHS7GTzGQukhb+yxYl8WGgD4 bhYHZtblomggclUJLepSI+x3eA/Jr8gdLg== X-Google-Smtp-Source: APXvYqxwQvjW56vsm7+bcdf0FFq6XYFyxl6OLg3QZhIlw0/lBGJJTvXkfrA8zaPvLPzQ4awtN8JMgQ== X-Received: by 2002:a63:2d44:: with SMTP id t65mr45222695pgt.112.1579229959940; Thu, 16 Jan 2020 18:59:19 -0800 (PST) Received: from ?IPv6:2600:380:4b14:d397:f0a3:4fc6:c904:323a? ([2600:380:4b14:d397:f0a3:4fc6:c904:323a]) by smtp.gmail.com with ESMTPSA id j7sm28891872pgn.0.2020.01.16.18.59.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Jan 2020 18:59:19 -0800 (PST) Subject: Re: [PATCH 1/1] io_uring: optimise use of ctx->drain_next To: Pavel Begunkov , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <6063bf6baa6fa1f5ec45272eb7c0b428698ded7f.1579222634.git.asml.silence@gmail.com> From: Jens Axboe Message-ID: <4b3d3147-260a-8649-c99b-681624762334@kernel.dk> Date: Thu, 16 Jan 2020 19:59:17 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <6063bf6baa6fa1f5ec45272eb7c0b428698ded7f.1579222634.git.asml.silence@gmail.com> 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 1/16/20 5:57 PM, Pavel Begunkov wrote: > Move setting ctx->drain_next to the only place it could be set, when it > got linked non-head requests. The same for checking it, it's interesting > only for a head of a link or a non-linked request. > > No functional changes here. This removes some code from the common path > and also removes REQ_F_DRAIN_LINK flag, as it doesn't need it anymore. Applied, thanks. -- Jens Axboe