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 19CEFC3B187 for ; Tue, 11 Feb 2020 20:21:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7FE720714 for ; Tue, 11 Feb 2020 20:21:49 +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="Z0IeYiK8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731806AbgBKUVt (ORCPT ); Tue, 11 Feb 2020 15:21:49 -0500 Received: from mail-il1-f193.google.com ([209.85.166.193]:32806 "EHLO mail-il1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728625AbgBKUVs (ORCPT ); Tue, 11 Feb 2020 15:21:48 -0500 Received: by mail-il1-f193.google.com with SMTP id s18so4631748iln.0 for ; Tue, 11 Feb 2020 12:21:48 -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=mIyBy4JCOkJP7cktnPbxhyiRKrh2LvbLi90NtcJ6v8E=; b=Z0IeYiK8hcLsi9ZV8xQNT6s6zlkEkPoVIgMbHkLV9P5b78X2FQY1Nh1XUjt5Y4OSjI YuR2sf/AEMXakQI+wYWynh6n00jSIbeKHL1+lV4a7YgobAil4L30epBZm+iJ4FAdVoV1 rSrbnAL2LSvAsf/4i6u7ybtqqPuYo7uDwACE5sfsFPajbMIuvpIPYXEQQ4QppB42bS6V SzGLNfrXYYch6QOVzfIASfrqosm9NlC6IAx6WxyxrlndMWPcC1UflBD1EJ6rxfHIlrLV B65wxCxWukWItL9y63Pm5Xpe8rqpJwon5t/qQkOa7/2Kkyf8AdXYozLUiI0U5+fNwlOH oVEw== 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=mIyBy4JCOkJP7cktnPbxhyiRKrh2LvbLi90NtcJ6v8E=; b=siB2VArbFjkeHFIBPIGZgOi1iRFLEDRZe/pXBeFv59BQ84EPXsP/atmErJEBPI1CQc yw+9FlyCZtutPxeM9XMO31MOkGB4tiv/DGqR7wEEg9s+gAm2M2g7iYqU5nWxuIhuFSz7 XQTSfTlOMwDBGWyQMxk8lSpQHjnF0+As6A0Jiog0hC10Dn5/QvFsC06Xwd5DBZ7zWTmR t/7HgJXdIUvIF+bitwrPr9z7clyKexPelUEPKxYBIeQt/eqEcRP71wIjcWiCy4wMfTxA WDJvnm/8El0Hka3RtkDlNHD8cvZDAquW7KU+w4TAGu9AE8Mu6T47AhoH6FuiJrHx5UTU VN9Q== X-Gm-Message-State: APjAAAV1LyzN1H8SILfteLyhjFoh6CDXxBctgfo/0Bb8/oOXZ/GeGRvz e+Lgns5jcpMg27ANPJnUekw2iuN4bgU= X-Google-Smtp-Source: APXvYqyXG92CLLE/gaDPSwIn/2AydfJPGTJHRA4qyjmWaFOiqwbPVoP2X3ZZ4BRGt7uUrjsbe8meow== X-Received: by 2002:a92:dac3:: with SMTP id o3mr8284147ilq.237.1581452507901; Tue, 11 Feb 2020 12:21:47 -0800 (PST) Received: from [192.168.1.159] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id v3sm1628309ili.0.2020.02.11.12.21.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Feb 2020 12:21:47 -0800 (PST) Subject: Re: [PATCH 3/5] io_uring: fix reassigning work.task_pid from io-wq To: Pavel Begunkov , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <728f583e7835cf0c74b8dc8fbeddb58970f477a5.1581450491.git.asml.silence@gmail.com> From: Jens Axboe Message-ID: <4a08cc5a-2100-3a31-becb-c16592905c86@kernel.dk> Date: Tue, 11 Feb 2020 13:21:46 -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: <728f583e7835cf0c74b8dc8fbeddb58970f477a5.1581450491.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 2/11/20 1:01 PM, Pavel Begunkov wrote: > If a request got into io-wq context, io_prep_async_work() has already > been called. Most of the stuff there is idempotent with an exception > that it'll set work.task_pid to task_pid_vnr() of an io_wq worker thread > > Do only what's needed, that's io_prep_linked_timeout() and setting > IO_WQ_WORK_UNBOUND. Rest of the series aside, I'm going to fix-up the pid addition to only set if it's zero like the others. -- Jens Axboe