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 2856AC6FD1D for ; Wed, 15 Mar 2023 15:19:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229459AbjCOPTm (ORCPT ); Wed, 15 Mar 2023 11:19:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53496 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230283AbjCOPTm (ORCPT ); Wed, 15 Mar 2023 11:19:42 -0400 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44E57574EC for ; Wed, 15 Mar 2023 08:19:41 -0700 (PDT) Received: by mail-io1-xd31.google.com with SMTP id h83so239767iof.8 for ; Wed, 15 Mar 2023 08:19:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; t=1678893580; 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=zEfoBf9a+LfY4K4VAZ5rieVI/pstbtfljX5WCa6988w=; b=Csuon2TTNRZNBXri219l6EVL5j3pM7uaY21k08mdvR3E3bPLpgOrnQUw+4CpnotFHt 5PkveMDEC6sKBpruU8xnHnC6GbbKssAzMDtRYkCDKOfHOhzSgG5O9NsOpfc69rA+iznJ o1pg2lp2HlJV2xN5S2AnbdAiMkfH8YxF5hF3x3DuN/mwQPxrdxoQ5VjS7D6KiTPq8m2L 4ViJXPwEvOZQokbx+7omd49xkxL9F2iRB9hbG6Pl0+MbcvPA39Q3sqt5Q3GhCvWjMbKS jMPDzehhUPMUDqQDM9vqshy7rrWssE/lCISL5pVZnYpGXR6w1SF+2crkQtM1YlkDCImD U/0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678893580; 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=zEfoBf9a+LfY4K4VAZ5rieVI/pstbtfljX5WCa6988w=; b=OBweJZUzrAZw7LqAaoOMN4IsOqcyNX1nktVXFtArPcILlfkTNCmgsifQr9iWTo2sUS 4tLubJxH/bRbgotpQloBmGC2aIrn/zDm1in3UWH37K6Adr7v7OH9twfL9Xc15SnKZqYb ZcagvwfbplqX1PkK/X5XK+aXBSHIMdj/kwR4cSUXqQa9FNh6kqLJbJGTSPcMwyREcM6T 2xxs7eNedF4iC0LxooUk8bdSwGUU77/3o5KQXY4WEcq7V6zzn08TB7jVXa8CXHsyInAa A9+OopBYeMNnkhkV5YXJh6ICh4XwVWs6bBqDNHdOUtkQrcuwH4BBSfkzdA8gdYvli5f0 aNEQ== X-Gm-Message-State: AO0yUKWGNXGdUCW93CaHyxUr1VveWsnDnFW5I3HKZvwdtgXzbUF8uzGO aBUU2vXqq/jGhn8z6Benw7BxDg== X-Google-Smtp-Source: AK7set8sFIdxdN2wm5CZL9sfTj25cucotSu2g/bKff7FlyaG9W+Dw8K8rPv0UXXbFf5rlONEQ/1Pmg== X-Received: by 2002:a5d:8587:0:b0:74e:5fba:d5df with SMTP id f7-20020a5d8587000000b0074e5fbad5dfmr10605776ioj.0.1678893580641; Wed, 15 Mar 2023 08:19:40 -0700 (PDT) Received: from [192.168.1.94] ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id b6-20020a05663801a600b004061ac1ddd1sm529805jaq.169.2023.03.15.08.19.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Mar 2023 08:19:40 -0700 (PDT) Message-ID: Date: Wed, 15 Mar 2023 09:19:39 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: Resizing io_uring SQ/CQ? Content-Language: en-US To: Stefan Hajnoczi , Ming Lei Cc: io-uring@vger.kernel.org References: <20230309134808.GA374376@fedora> <2f928d56-a2ff-39ef-f7ae-b6cc1da4fc42@kernel.dk> <20230310134400.GB464073@fedora> <20230315151524.GA14895@fedora> From: Jens Axboe In-Reply-To: <20230315151524.GA14895@fedora> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 3/15/23 9:15 AM, Stefan Hajnoczi wrote: > Hi Ming and Jens, > It would be great if you have time to clarify whether deadlocks can > occur or not. If you have any questions about the scenario I was > describing, please let me know. I don't believe there is. In anything not ancient, you are always allowed to submit and the documentation should be updated to describe that correctly. We don't return -EBUSY for submits with overflow pending. -- Jens Axboe