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=-5.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 E646FC388F7 for ; Sun, 25 Oct 2020 19:35:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9E8B20885 for ; Sun, 25 Oct 2020 19:35:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="rbppGqnT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1418544AbgJYTfo (ORCPT ); Sun, 25 Oct 2020 15:35:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1418543AbgJYTfn (ORCPT ); Sun, 25 Oct 2020 15:35:43 -0400 Received: from mail-wm1-x342.google.com (mail-wm1-x342.google.com [IPv6:2a00:1450:4864:20::342]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E920C061755; Sun, 25 Oct 2020 12:35:43 -0700 (PDT) Received: by mail-wm1-x342.google.com with SMTP id a72so9685668wme.5; Sun, 25 Oct 2020 12:35:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:cc:references:from:autocrypt:subject:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=xic0sb5SZZSISfTIXUXKH9aG2iYPwX5fxVKCImk6wU0=; b=rbppGqnTJhIeCX2gsu3g/04ePIZohV6vtrBQDMoE8SXHh+/8yYh+1ZRftVeBCmsRKM g2xrf7yvcZlrPezgyA2k6C8HOZHGox7D2OMnoLCnv44U0QQt1SJpyMredSxBBubc9PHG O0vtoU/tHEM0NazdyVbf6F1VBQuTKczgKRIINHE46u5CxnTYUb3Dwq6gktslchQuwROy rFgmjsBmgZyIiNWpsqmziOCUQw+dxXohBAgUztIUt7lMXueyY7h+iODSA0HsbNoxbOo/ pBtqam1mVZUaLCN/rusrP05SLK2yQRRPzyLBtKRQ6wrguNP6oSWMvrKfiWJuqo7wwaN5 qZeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:cc:references:from:autocrypt:subject :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=xic0sb5SZZSISfTIXUXKH9aG2iYPwX5fxVKCImk6wU0=; b=aABn72wuOcK7hSpWn21Xj3Iyh/rdgAe8IrRyO5ljG5k4SZCnFtnv/cd3q65CWc0MKC 52G/lOW9OCoXs7fqwdL6+mNAp0WLfPAppn+spb4SA+WRaTk2g+NS0JIAaihCSgfNp4Wl VbcxCR8ezQb4x1ROL9DZftWZmk2E1hb1H5kRQNitopB+4BqPmyPc5R5iu3GPpD7Dvg5X qK2aYZhl9EAhCLVzVIh5YoY5JgDJLlMp9Cf0c7+NGBryPjyRPEBkmx+G0l1tLe5kMOvW xOCfknGFv5YzvUCs8/JZhfVQCcKj/IelSIby/rcQJOIC0QQ5i0Lg2RP72b4NGkXZDs+M MDHQ== X-Gm-Message-State: AOAM533hPQBZrue2CfHMprdi8NvN3VxztgyypjpXnoGAY5PwgJXq8XHX U3Sk6lO09pJjczpLlXRFuQZ0gYJpG9PGNA== X-Google-Smtp-Source: ABdhPJysDPAInr9/3ah6Ul32j+b0hb2NqWXAed4QPHRPtWmzDHN9szPKjPHtjAnD2Y5U/bCZTX62sA== X-Received: by 2002:a7b:c305:: with SMTP id k5mr13150056wmj.102.1603654541730; Sun, 25 Oct 2020 12:35:41 -0700 (PDT) Received: from [192.168.1.159] (host109-152-100-228.range109-152.btcentralplus.com. [109.152.100.228]) by smtp.gmail.com with ESMTPSA id 133sm25400318wmb.2.2020.10.25.12.35.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 25 Oct 2020 12:35:41 -0700 (PDT) To: Jens Axboe , io-uring@vger.kernel.org Cc: stable@vger.kernel.org References: <1bf1093730a68f8939bfd7e6747add7af37ad321.1603635991.git.asml.silence@gmail.com> <1ea94ec7-d80a-527b-5366-b91815496f4a@kernel.dk> <2022677d-6783-468d-6e77-43208a91edba@gmail.com> <83e9fd0e-9136-0ca7-5eb9-01f8da6bd212@kernel.dk> <94e07136-2be5-2981-79ae-d4f714803143@gmail.com> From: Pavel Begunkov Autocrypt: addr=asml.silence@gmail.com; prefer-encrypt=mutual; keydata= mQINBFmKBOQBEAC76ZFxLAKpDw0bKQ8CEiYJRGn8MHTUhURL02/7n1t0HkKQx2K1fCXClbps bdwSHrhOWdW61pmfMbDYbTj6ZvGRvhoLWfGkzujB2wjNcbNTXIoOzJEGISHaPf6E2IQx1ik9 6uqVkK1OMb7qRvKH0i7HYP4WJzYbEWVyLiAxUj611mC9tgd73oqZ2pLYzGTqF2j6a/obaqha +hXuWTvpDQXqcOZJXIW43atprH03G1tQs7VwR21Q1eq6Yvy2ESLdc38EqCszBfQRMmKy+cfp W3U9Mb1w0L680pXrONcnlDBCN7/sghGeMHjGKfNANjPc+0hzz3rApPxpoE7HC1uRiwC4et83 CKnncH1l7zgeBT9Oa3qEiBlaa1ZCBqrA4dY+z5fWJYjMpwI1SNp37RtF8fKXbKQg+JuUjAa9 Y6oXeyEvDHMyJYMcinl6xCqCBAXPHnHmawkMMgjr3BBRzODmMr+CPVvnYe7BFYfoajzqzq+h EyXSl3aBf0IDPTqSUrhbmjj5OEOYgRW5p+mdYtY1cXeK8copmd+fd/eTkghok5li58AojCba jRjp7zVOLOjDlpxxiKhuFmpV4yWNh5JJaTbwCRSd04sCcDNlJj+TehTr+o1QiORzc2t+N5iJ NbILft19Izdn8U39T5oWiynqa1qCLgbuFtnYx1HlUq/HvAm+kwARAQABtDFQYXZlbCBCZWd1 bmtvdiAoc2lsZW5jZSkgPGFzbWwuc2lsZW5jZUBnbWFpbC5jb20+iQJOBBMBCAA4FiEE+6Ju PTjTbx479o3OWt5b1Glr+6UFAlmKBOQCGwMFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQ Wt5b1Glr+6WxZA//QueaKHzgdnOikJ7NA/Vq8FmhRlwgtP0+E+w93kL+ZGLzS/cUCIjn2f4Q Mcutj2Neg0CcYPX3b2nJiKr5Vn0rjJ/suiaOa1h1KzyNTOmxnsqE5fmxOf6C6x+NKE18I5Jy xzLQoktbdDVA7JfB1itt6iWSNoOTVcvFyvfe5ggy6FSCcP+m1RlR58XxVLH+qlAvxxOeEr/e aQfUzrs7gqdSd9zQGEZo0jtuBiB7k98t9y0oC9Jz0PJdvaj1NZUgtXG9pEtww3LdeXP/TkFl HBSxVflzeoFaj4UAuy8+uve7ya/ECNCc8kk0VYaEjoVrzJcYdKP583iRhOLlZA6HEmn/+Gh9 4orG67HNiJlbFiW3whxGizWsrtFNLsSP1YrEReYk9j1SoUHHzsu+ZtNfKuHIhK0sU07G1OPN 2rDLlzUWR9Jc22INAkhVHOogOcc5ajMGhgWcBJMLCoi219HlX69LIDu3Y34uIg9QPZIC2jwr 24W0kxmK6avJr7+n4o8m6sOJvhlumSp5TSNhRiKvAHB1I2JB8Q1yZCIPzx+w1ALxuoWiCdwV M/azguU42R17IuBzK0S3hPjXpEi2sK/k4pEPnHVUv9Cu09HCNnd6BRfFGjo8M9kZvw360gC1 reeMdqGjwQ68o9x0R7NBRrtUOh48TDLXCANAg97wjPoy37dQE7e5Ag0EWYoE5AEQAMWS+aBV IJtCjwtfCOV98NamFpDEjBMrCAfLm7wZlmXy5I6o7nzzCxEw06P2rhzp1hIqkaab1kHySU7g dkpjmQ7Jjlrf6KdMP87mC/Hx4+zgVCkTQCKkIxNE76Ff3O9uTvkWCspSh9J0qPYyCaVta2D1 Sq5HZ8WFcap71iVO1f2/FEHKJNz/YTSOS/W7dxJdXl2eoj3gYX2UZNfoaVv8OXKaWslZlgqN jSg9wsTv1K73AnQKt4fFhscN9YFxhtgD/SQuOldE5Ws4UlJoaFX/yCoJL3ky2kC0WFngzwRF Yo6u/KON/o28yyP+alYRMBrN0Dm60FuVSIFafSqXoJTIjSZ6olbEoT0u17Rag8BxnxryMrgR dkccq272MaSS0eOC9K2rtvxzddohRFPcy/8bkX+t2iukTDz75KSTKO+chce62Xxdg62dpkZX xK+HeDCZ7gRNZvAbDETr6XI63hPKi891GeZqvqQVYR8e+V2725w+H1iv3THiB1tx4L2bXZDI DtMKQ5D2RvCHNdPNcZeldEoJwKoA60yg6tuUquvsLvfCwtrmVI2rL2djYxRfGNmFMrUDN1Xq F3xozA91q3iZd9OYi9G+M/OA01husBdcIzj1hu0aL+MGg4Gqk6XwjoSxVd4YT41kTU7Kk+/I 5/Nf+i88ULt6HanBYcY/+Daeo/XFABEBAAGJAjYEGAEIACAWIQT7om49ONNvHjv2jc5a3lvU aWv7pQUCWYoE5AIbDAAKCRBa3lvUaWv7pfmcEACKTRQ28b1y5ztKuLdLr79+T+LwZKHjX++P 4wKjEOECCcB6KCv3hP+J2GCXDOPZvdg/ZYZafqP68Yy8AZqkfa4qPYHmIdpODtRzZSL48kM8 LRzV8Rl7J3ItvzdBRxf4T/Zseu5U6ELiQdCUkPGsJcPIJkgPjO2ROG/ZtYa9DvnShNWPlp+R uPwPccEQPWO/NP4fJl2zwC6byjljZhW5kxYswGMLBwb5cDUZAisIukyAa8Xshdan6C2RZcNs rB3L7vsg/R8UCehxOH0C+NypG2GqjVejNZsc7bgV49EOVltS+GmGyY+moIzxsuLmT93rqyII 5rSbbcTLe6KBYcs24XEoo49Zm9oDA3jYvNpeYD8rDcnNbuZh9kTgBwFN41JHOPv0W2FEEWqe JsCwQdcOQ56rtezdCJUYmRAt3BsfjN3Jn3N6rpodi4Dkdli8HylM5iq4ooeb5VkQ7UZxbCWt UVMKkOCdFhutRmYp0mbv2e87IK4erwNHQRkHUkzbsuym8RVpAZbLzLPIYK/J3RTErL6Z99N2 m3J6pjwSJY/zNwuFPs9zGEnRO4g0BUbwGdbuvDzaq6/3OJLKohr5eLXNU3JkT+3HezydWm3W OPhauth7W0db74Qd49HXK0xe/aPrK+Cp+kU1HRactyNtF8jZQbhMCC8vMGukZtWaAwpjWiiH bA== Subject: Re: [PATCH] io_uring: fix invalid handler for double apoll Message-ID: <923cecfe-6d0e-515f-3237-99884053b7f0@gmail.com> Date: Sun, 25 Oct 2020 19:32:43 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 25/10/2020 19:18, Jens Axboe wrote: > On 10/25/20 1:01 PM, Pavel Begunkov wrote: >> On 25/10/2020 18:42, Jens Axboe wrote: >>> On 10/25/20 10:24 AM, Pavel Begunkov wrote: >>>> On 25/10/2020 15:53, Jens Axboe wrote: >>>>> On 10/25/20 8:26 AM, Pavel Begunkov wrote: >>>>>> io_poll_double_wake() is called for both: poll requests and as apoll >>>>>> (internal poll to make rw and other requests), hence when it calls >>>>>> __io_async_wake() it should use a right callback depending on the >>>>>> current poll type. >>>>> >>>>> Can we do something like this instead? Untested... >>>> >>>> It should work, but looks less comprehensible. Though, it'll need >>> >>> Not sure I agree, with a comment it'd be nicer im ho: >> >> I don't really care enough to start a bikeshedding, let's get yours >> tested and merged. > > Not really bikeshedding I think, we're not debating names of > functions :-) It's just not so important, and it even may get removed in a month, who knows. > > My approach would need conditional clearing of ->private as well, > as far as I can tell. I'll give it a spin. Maybe - poll->wait.func(wait, mode, sync, key); + poll->wait.func(&poll->wait, mode, sync, key); -- Pavel Begunkov