From patchwork Fri Jan 20 20:02:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Axboe X-Patchwork-Id: 13110483 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 37686C25B50 for ; Fri, 20 Jan 2023 20:02:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229536AbjATUCI (ORCPT ); Fri, 20 Jan 2023 15:02:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229633AbjATUCH (ORCPT ); Fri, 20 Jan 2023 15:02:07 -0500 Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8FDE515CB2 for ; Fri, 20 Jan 2023 12:02:06 -0800 (PST) Received: by mail-pg1-x52c.google.com with SMTP id f3so4969087pgc.2 for ; Fri, 20 Jan 2023 12:02:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:content-language:cc:to:subject:from :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=Eatz6QpA8+HMqi2Y6hJrQTSjs1H1Xjf9wO/dcEandlE=; b=ghhPxXexOlmsbaGphniLpQP5g9bBkRECGO5dJbgu0SQLB4ru4dWqmbVCQ9exWR0RPd ATfibSuOC8FNHYY8h9aVEjPZMN2teDA88+0OB/55fJOjLBZAClhiwpujkoRd5r4QDmTj tEqo60EVSVEwZQtjf2Am61X/CUfxILPemC5PeIhvBoMdWMq9mOfBFeejMyzT3ZycYEbD J1+jkhn/EEXoTrqA7W5YYxOq1R1mh0r9ChethcH3uFc4D6JxX5JIeLX7l7a95V1bK1LL jRLGvSg1CC3yQbfM6jQR6IZjII7bqPCgEY+mPGJtywLxx9u1ekFcL1vwuXTGqmjlwM0B yMiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:content-language:cc:to:subject:from :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=Eatz6QpA8+HMqi2Y6hJrQTSjs1H1Xjf9wO/dcEandlE=; b=tg6rYC2QtfuwXwZYvGL0V+7f/ZV3jzUQHvmzIqNI1n+bbxfTThBxdxPts+hYvmfGvZ r4OCPs+NLzFZdBIaXBXigfTd7sp8X91mNldPAiB+4ysjzvvLJcISs8JEBD9dQX49JX7Q OS8pSgOUBUs6WxcW9YDKJnb+I/xH34BzWpgysiAhbsZVwt5IyZgn1fFqvTM+R41xji7g a2kiW4ePmrXodaSaTO/T9jTyLzV6CG0yCG5+ndrG/uIknWtxk/Yue5Fi960ZQuEviLEK bQT/sHaXXGm1ogeW1aK6k5IAXF66ekFL57MD1NWyjZukTxVRsi3LABSTRgnP9BAxB+gM aDWQ== X-Gm-Message-State: AFqh2kpd5IPIqKdVuqIPc2FzlqFrUXfNDN0A/pAUXvyPNHB59YkPb0nU mDJwXyKKTA5toXb7stL7X9k+fOCzbWJKRg1J X-Google-Smtp-Source: AMrXdXuoLHcoUSd1Sd+QhBetydzCsFsmB+T3l3aTDWe1iFSchXdqMq4DonrkEYhnPW1kJPyAaB7y/A== X-Received: by 2002:a62:e919:0:b0:58d:be61:7d9e with SMTP id j25-20020a62e919000000b0058dbe617d9emr3784413pfh.0.1674244925950; Fri, 20 Jan 2023 12:02:05 -0800 (PST) Received: from [192.168.1.136] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id u197-20020a6279ce000000b005855d204fd8sm26495326pfc.93.2023.01.20.12.02.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 20 Jan 2023 12:02:05 -0800 (PST) Message-ID: <0fc64186-588b-76b8-0683-b03df9be9ee5@kernel.dk> Date: Fri, 20 Jan 2023 13:02:04 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 From: Jens Axboe Subject: [GIT PULL] io_uring fixes for 6.2-rc5 To: Linus Torvalds Cc: io-uring Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hi Linus, Just fixes for the MSG_RING opcode. Nothing really major: - Fix an overflow missing serialization around posting CQEs to the target ring (me) - Disable MSG_RING on a ring that isn't enabled yet. There's nothing really wrong with allowing it, but 1) it's somewhat odd as nobody can receive them yet, and 2) it means that using the right delivery mechanism might change. As nobody should be sending CQEs to a ring that isn't enabled yet, let's just disable it (Pavel) - Tweak to when we decide to post remotely or not for MSG_RING (Pavel) Please pull! The following changes since commit 544d163d659d45a206d8929370d5a2984e546cb7: io_uring: lock overflowing for IOPOLL (2023-01-13 07:32:46 -0700) are available in the Git repository at: git://git.kernel.dk/linux.git tags/io_uring-6.2-2023-01-20 for you to fetch changes up to 8579538c89e33ce78be2feb41e07489c8cbf8f31: io_uring/msg_ring: fix remote queue to disabled ring (2023-01-20 09:49:34 -0700) ---------------------------------------------------------------- io_uring-6.2-2023-01-20 ---------------------------------------------------------------- Jens Axboe (2): io_uring/msg_ring: move double lock/unlock helpers higher up io_uring/msg_ring: fix missing lock on overflow for IOPOLL Pavel Begunkov (2): io_uring/msg_ring: fix flagging remote execution io_uring/msg_ring: fix remote queue to disabled ring io_uring/io_uring.c | 4 +- io_uring/msg_ring.c | 130 +++++++++++++++++++++++++++++++++------------------- 2 files changed, 84 insertions(+), 50 deletions(-)