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 80EC1C77B7A for ; Tue, 16 May 2023 14:14:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232526AbjEPOOh (ORCPT ); Tue, 16 May 2023 10:14:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233519AbjEPOOg (ORCPT ); Tue, 16 May 2023 10:14:36 -0400 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC80D55B7 for ; Tue, 16 May 2023 07:14:35 -0700 (PDT) Received: by mail-pg1-x532.google.com with SMTP id 41be03b00d2f7-51f405ab061so1402195a12.1 for ; Tue, 16 May 2023 07:14:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20221208.gappssmtp.com; s=20221208; t=1684246475; x=1686838475; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:to:from:from:to:cc:subject:date:message-id :reply-to; bh=cCxvGJajOXCMUGeHJZr6/Oyl9zRWStp7x7yawhzT6QU=; b=sGkGwfptGEfX2TcFtw52PNDHgWfDqqPwNnOO9EEvpAplpLrpJ/642P6u8YXz71N5q5 DwroumVlR3PxNl8Mo4zdeQfBBNiH9ZSg7PsbsGuqcgr8kqOLOcqPFl2lizhN1SR8EYmM bgBn5oMM5EdQgeRhOMC1HMYZ/L5IZNZfReYWEc2cq9k2cIIwquLPL3XHW4ciC+r+7Cgm ACRR/4pavdBT0MptSdhryYBpiNuVbBZqUbuCIe1MqAN2R8nvca34wvqt4FuMU0o93tgv /JAcsxNZyA0WHMWt2pGZkOrLAmFlJlqnBNN9U0rZObO91KUemCJmz9x9Fo2mQemdT/XR kCCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684246475; x=1686838475; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cCxvGJajOXCMUGeHJZr6/Oyl9zRWStp7x7yawhzT6QU=; b=Eaqsq8K8mpQiSf9V+eRXUBMlFPyEapfIgquUL/kDcHQLquEllFoAmKE3GVVLDajVv1 1E5V4RgIx9SVo/WO2pPlo/Qp+E1bEAfsN91iqYu3WQUwUieDYD6uvu6uYN9ltSgkLN/8 KrC9GMrELqa0Jd1wpTLdcik5cAsNa2kQdwbKGBWid+lOyjO60ynI/IvIWAlf+N8uMK6y /s1qe3ycfru0lkbQ28WCtMdWSBdvDn9mtHD4DqwfALppvHA4nMbrNvNBQP6+/if+b+mR +FZFO7pKt9Q7b4Rz92CUqMg9B4UiW1DoEARoiHhhvbSA9kR/JHTg25aB+dW6ffceQnod 4wxQ== X-Gm-Message-State: AC+VfDx7vfV97sexe1W/p0F3Ms9TsIixEjBn1/usVGPsshLuVqZfilxD uIG4kus0H+gmhfwOxeIxNKOerQ== X-Google-Smtp-Source: ACHHUZ4ArrQmcdldMUd/RhtEp98ANEbUxDowKAOxeDQn1K+i8+lUFT7CVOAvpGIl+9mbI6ehtzH9Lw== X-Received: by 2002:a05:6a21:99a2:b0:103:9d9b:1ebb with SMTP id ve34-20020a056a2199a200b001039d9b1ebbmr4696510pzb.0.1684246475143; Tue, 16 May 2023 07:14:35 -0700 (PDT) Received: from [127.0.0.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id r15-20020a170903020f00b001a1a8e98e93sm15592351plh.287.2023.05.16.07.14.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 May 2023 07:14:34 -0700 (PDT) From: Jens Axboe To: Pavel Begunkov , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, Josh Triplett In-Reply-To: References: Subject: Re: [RFC PATCH] io_uring: Add io_uring_setup flag to pre-register ring fd and never install it Message-Id: <168424647374.1741575.7066874860468744586.b4-ty@kernel.dk> Date: Tue, 16 May 2023 08:14:33 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.13-dev-00303 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Sat, 29 Apr 2023 01:40:30 +0900, Josh Triplett wrote: > With IORING_REGISTER_USE_REGISTERED_RING, an application can register > the ring fd and use it via registered index rather than installed fd. > This allows using a registered ring for everything *except* the initial > mmap. > > With IORING_SETUP_NO_MMAP, io_uring_setup uses buffers allocated by the > user, rather than requiring a subsequent mmap. > > [...] Applied, thanks! [1/1] io_uring: Add io_uring_setup flag to pre-register ring fd and never install it commit: 6e76ac595855db27bbdaef337173294a6fd6eb2c Best regards, -- Jens Axboe