Received: by 2002:a05:6358:3188:b0:123:57c1:9b43 with SMTP id q8csp770330rwd; Tue, 16 May 2023 07:32:25 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ6nxNUj5zrbyQeADf9Y91mIqx49Y0CyVHRFYVLdXtceL3l3XcPm7AOY4HrTgfL0ZR3YKw4l X-Received: by 2002:a17:903:32c6:b0:1ad:d935:a29d with SMTP id i6-20020a17090332c600b001add935a29dmr21615006plr.39.1684247544631; Tue, 16 May 2023 07:32:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1684247544; cv=none; d=google.com; s=arc-20160816; b=UH9c+eswrUCFJgwKDqYm8d5ArGLcoo7t25N1VvJ6bmb4WHGtZjQ2pPTeiD8ta4JEGn VD63FhdlRkTPt9aYnYfsB7w7pXVCWIPc7acVqk9oG5MjQ8bSyiGMvkUs5T+iH85tG1kh /u1FQ2Ds2Q+xbu26xJAfEbpQTZfJFVTR4tzTeozp5WMsLKqh3hOD9miIzWPvPx3qxKAf gKYuWmFfGMMJGIoUeubZqPJ4kMfA8yz5D/ErcusVJS5HYmzyj7pv/T6yO+ZGQseWO+HR JKUoZC+6/4EOq9z7erR30TSdLDlLYex5M8pzzYdgamxy2sfmQIEll49VorbyTRckzJyQ 2jFg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version:date :message-id:subject:references:in-reply-to:to:from:dkim-signature; bh=cCxvGJajOXCMUGeHJZr6/Oyl9zRWStp7x7yawhzT6QU=; b=NnmIRJ5U1urYJtQrTWEKenuLnnnrh91NVDBwBLUrt8LvVsB9h/+6RdYvvGxy0YGmPw oWBDjvxy6p3Mb4jeKf70+7x8aXPt2o9KsJG33bC7kVk8o5qTrS/CRYm/W73ON0VZBl/A uVrg6tC45jc6TBAOQXOWRjY+RuJMM1kaalEPcLPjWhVwkJSvkso5BdCFSz9P4iK0MC/j nzA872DRwU08HfS8seueeWAYzxByHIDfvTGPkULF6M2kebaP9OoJ0zWEvjO+xJcv+o8E COx5QkSiLntl//puJxpTytZriu7R5OUIlEknwJY+VxXhlav97v6Fc2Xm6hQYP98XJTAY rSMA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel-dk.20221208.gappssmtp.com header.s=20221208 header.b=sGkGwfpt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id m9-20020a170902768900b001a6b6085041si17478864pll.512.2023.05.16.07.32.12; Tue, 16 May 2023 07:32:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel-dk.20221208.gappssmtp.com header.s=20221208 header.b=sGkGwfpt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233519AbjEPOOi (ORCPT + 99 others); Tue, 16 May 2023 10:14:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233331AbjEPOOg (ORCPT ); Tue, 16 May 2023 10:14:36 -0400 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAA051FFB for ; Tue, 16 May 2023 07:14:35 -0700 (PDT) Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-645cfeead3cso1927640b3a.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=LHB6U8JTomLSXhLs8Ebs8gWtfwxE6AIXUmqAgxwazzk0c7eaF5ZluUaRnldPmwpe0l IGKoEVR6uGpG+l0mSrzMD9t11yl8UzIUCgzcWVZU/6PxZuixS7dVnNjVZQ+mxZ+qSPly Rx5BfnHvZpusIuolodH5X2IA/4Rio3azz3ravMHijh8BD0jmGfBbaaATE400sF03duJo GKNb0OBu6jpMymy0l/0VEeTe5dRuP8ZuEb4IlyzviPCyy5wPTSbdq9mR+hduB5Vkz2cl XmW/OPNXS3jeLYqScbdSHBNfRJSkPCmIoV8nHIbJ7MLV7A4KQrvfjbMic7SeVfS1BgWQ A1+Q== X-Gm-Message-State: AC+VfDzbhLWMDgZWuC6Gczyo63cHCU1rEWskSV7C64ZIXwd87TB3ivBG ujvaHMo9Hj643WoqKasToaZG3XEAqIpYygPU3Go= 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 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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