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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D744BEB64DA for ; Wed, 5 Jul 2023 13:20:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230248AbjGENUq (ORCPT ); Wed, 5 Jul 2023 09:20:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229715AbjGENUp (ORCPT ); Wed, 5 Jul 2023 09:20:45 -0400 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2B48170A; Wed, 5 Jul 2023 06:20:43 -0700 (PDT) Received: by mail-ed1-x536.google.com with SMTP id 4fb4d7f45d1cf-51bece5d935so8545697a12.1; Wed, 05 Jul 2023 06:20:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1688563242; x=1691155242; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=/fCmZ6q0JsTV3HqLdUkUdemQX1a9SwOUpIkbbiSyfp4=; b=X2FSPgufdbN4hFbJcpyGYdhzQUpCHGEhuczPN84EtUoXlzbP/H/ZaS+MKhsvL8Yd5C hPFFBlDp2Q8JMKa0eLDKdCfiDFtLp0OsAgVUUwxg17kgA2bDC2TkIcV+fz4scQJkFWHH 8jRi28zlpfLjzpAt1oXPjSw/ozRyVBCadkIz2G3W+rkfXcuFSgJJZsPIl6pauC5qQ5MM hP+HPGoa+/zP3uK5sj2SCD2f7mu0kfmr2cbWLn5R+Idy0FIafriTkEguMKuzOr3tzlNV 2eJxx+OCYI44X3aR7praqF5ajwC7YlhE+FMzbxJYfcqw3krNCNN3RFEgIq/eKMuoIX+M 6hyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688563242; x=1691155242; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=/fCmZ6q0JsTV3HqLdUkUdemQX1a9SwOUpIkbbiSyfp4=; b=f9nuj8Hd+CExRWPC2kdDUP3DX82KacFjuZu/QhLnRwG6cftwYuy9+0KETBA9E7jVB6 qRJ+8cQqcDrIGfPhooaJ6t/xhCZYCPh1uKbgHWN7aFpS0lEo9o1beqgpPbKCe/gDUViH L0OWti+flWgkFsNsXSjTpVj7fIc1FdUEgmLftVBiO5vxkphFVn5B3ykUGzYXVCkio0i5 Jw+ZRB0oNGgAoq9qZnqfM5jtJLtknrMWgfhiQ/NjxLfx6L5QjyNUTzHOJ9PZOP+dR/+0 mdy51gsld5oFQOyqGtPiQvgcPTXJg9juDkeCGRT9wPfT9WX58FCphRuPNFlvfiGnhTJ9 8Hxg== X-Gm-Message-State: ABy/qLayVzyxo3624oLZbPkN34V3KlSuLsgxoR3c+FTGeAtIjXOZU/9h wsEdvwsOvWN0zopWI6tUETo= X-Google-Smtp-Source: APBJJlFu8ivEKuBQE21vjIOZHmBdoeVUEin6/EI9cShkYzBlJKRykMMlrV3EaYDLh+btejVe9rDAYw== X-Received: by 2002:a17:906:ee1:b0:992:c40e:3c1f with SMTP id x1-20020a1709060ee100b00992c40e3c1fmr12331565eji.25.1688563242020; Wed, 05 Jul 2023 06:20:42 -0700 (PDT) Received: from ?IPV6:2620:10d:c096:310::2eef? ([2620:10d:c092:600::2:4b35]) by smtp.gmail.com with ESMTPSA id x6-20020a170906710600b0098e48ad11f2sm13122173ejj.93.2023.07.05.06.20.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 05 Jul 2023 06:20:41 -0700 (PDT) Message-ID: <4aed6b48-1911-613d-8e78-fdafd99835fe@gmail.com> Date: Wed, 5 Jul 2023 14:17:11 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: Re: [PATCH 11/11] io_uring: add IORING_SETUP_FIXED_WORKER_ONLY and its friend Content-Language: en-US To: Hao Xu , io-uring@vger.kernel.org Cc: Jens Axboe , Wanpeng Li , linux-fsdevel@vger.kernel.org References: <20230609122031.183730-1-hao.xu@linux.dev> <20230609122031.183730-12-hao.xu@linux.dev> From: Pavel Begunkov In-Reply-To: <20230609122031.183730-12-hao.xu@linux.dev> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 6/9/23 13:20, Hao Xu wrote: > From: Hao Xu > > Add a new setup flag to indicate that the uring instance only use fixed > workers as async offload threads. Add a work flag and its code logic as > well. Do we need it? What is the effective difference from limiting workers to 0 via IORING_REGISTER_IOWQ_MAX_WORKERS? It sounds like it should rather be a liburing helper instead. -- Pavel Begunkov