Received: by 2002:ad5:4acb:0:0:0:0:0 with SMTP id n11csp4855048imw; Tue, 19 Jul 2022 14:50:38 -0700 (PDT) X-Google-Smtp-Source: AGRyM1sBLUMD814s3cZ52FRs/oXHf0qDVDR0Mie6NTmLj8Zf4mp/5HWQsN5+DwQfKny7A2J0Qzta X-Received: by 2002:a17:902:988b:b0:16b:fae3:fcd5 with SMTP id s11-20020a170902988b00b0016bfae3fcd5mr36203303plp.109.1658267438007; Tue, 19 Jul 2022 14:50:38 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1658267438; cv=none; d=google.com; s=arc-20160816; b=Ce3vX5GSrzop+NMhEzgBQZ3EdeRN1MrgEqUOl2K5DlUt85ZrNwCOiDBH5IE7psvY67 9q0IpCTtetPT7IhPFUDrJ58w8oefpXfqHdgUPFE/N3tu/JHg3EEz3jPfgZaKAeQiUw98 ZUL8LHzumYqYeC1eD1R7dJ1LHM42ze6zMJuMTN8a80ihtKz3qWHjg6g0tXUhJ8E8wwZj JewBOHqT2R3f+/Oc7PSlYmpfgC7vN/xNT9pY8paj5k+5aIrPh82aDW/hrj0M5r92vG06 gUi+EXy+i5qdNZnKWEexIP3grbicqF9KSQ47Kk9v+ac3PwYm3Z6nzI88DnancY16hU6u 2HdA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=V5XmcYFINzq7Zfp1ZH6JYE8dP3xg797dDa/g7sWMt+4=; b=vtDjysG+qXoBP9jyDZEz0Mcqj6SNJOFvHfIpu2nzkroR0PjiK7meevJIbmo46oriD0 VpheZK4mUePYPwf4Ha5Y2tEwImoFzPEojYo6Bha6Xb3St47BccIOXDMPqJDcVgyouBBk iL+umL0gQt5UUeCDSU66lBxgdrvoB2sn0nLJskQRKfoc+HLRIL/7SNPHbWDai0aUyD2c CeccsoLJ6T7POjFzHdXk1YIV+itD1oF2UOjPecHZzqmOmdiXbC8luF0yRMarGOE9y5L8 8cOg3Wdh8OwkHf50gzCu7eIX8fuXPm/c5OGyEsvyGcxG6f0HCO0VQ2wrbQEC1doQlqSt fG0Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=Bpxs6UDr; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id r35-20020a635163000000b00411f660a8b0si19857470pgl.124.2022.07.19.14.50.22; Tue, 19 Jul 2022 14:50:37 -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=@redhat.com header.s=mimecast20190719 header.b=Bpxs6UDr; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238767AbiGSVXw (ORCPT + 99 others); Tue, 19 Jul 2022 17:23:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238605AbiGSVXt (ORCPT ); Tue, 19 Jul 2022 17:23:49 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2651761B33 for ; Tue, 19 Jul 2022 14:23:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1658265826; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=V5XmcYFINzq7Zfp1ZH6JYE8dP3xg797dDa/g7sWMt+4=; b=Bpxs6UDr8USjhDEkgFSSp/NI3Za/mt8OprCuHvXvZLFjkPFygoHgWrR2E5MtHgZD/tNh/d uwkZJcIh8dzt45rlkkDZ2fh/T8iKhpBVQ3P0r8WEzK3PmR3Pl1+ElOvYMX5JsXZ+GfZVCN Dm71noIs+ex/UWGlpDmNP0UeglIhI+4= Received: from mail-qt1-f200.google.com (mail-qt1-f200.google.com [209.85.160.200]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-632-IkwN0R1JPNqXl30U37wd_w-1; Tue, 19 Jul 2022 17:23:44 -0400 X-MC-Unique: IkwN0R1JPNqXl30U37wd_w-1 Received: by mail-qt1-f200.google.com with SMTP id c22-20020ac81116000000b0031d25923ea8so11013704qtj.17 for ; Tue, 19 Jul 2022 14:23:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=V5XmcYFINzq7Zfp1ZH6JYE8dP3xg797dDa/g7sWMt+4=; b=CpH+6RCywH/P4cbt+O0x4m3Pk+mV5JBFrUhPGgazwZbUqZPXIqj6CRP77wT1IsUmZT DHWx7KBMvA3DQEkAGOOpBA+PyED9ftDvfxwmogKeQiD65evVbcrnWBQQRO4buh6ugAy6 o2hDBmvQ3ulT90PR6VNVfti3fMnEfkP1gRIpxqZjXtUudVJUM2FzMgAdwhMNEvS2aV6x BwuGlgS9Z2bJcVB4JvsN3pkZnA0wdykApH8EC1v8fKDuTaNMJja0n9im2z1S3kX9yBjZ ox09GvJrtxoawXNQNvpmeQHIGlpxClCFXh4B+52g82a9UhQC7rtFHYcDsxpV9fVJ25oz RciQ== X-Gm-Message-State: AJIora9WAYvbwhSAI1vgGzXq9QH1RJA4nWxdkuYYkg8/2Js3MOLqMVc0 AMokHF5KOklHQFprjxXZemlH3AFQrvJPGkPNr7EAXw1y8eBUvmeeLhiC4vHpgxtTyxd5rQuAyeW mqLkie/pdsGVb5wiG8HPtpYPb X-Received: by 2002:a05:6214:761:b0:472:f5f3:5139 with SMTP id f1-20020a056214076100b00472f5f35139mr26406587qvz.48.1658265824305; Tue, 19 Jul 2022 14:23:44 -0700 (PDT) X-Received: by 2002:a05:6214:761:b0:472:f5f3:5139 with SMTP id f1-20020a056214076100b00472f5f35139mr26406569qvz.48.1658265824116; Tue, 19 Jul 2022 14:23:44 -0700 (PDT) Received: from xz-m1.local (bras-base-aurron9127w-grc-37-74-12-30-48.dsl.bell.ca. [74.12.30.48]) by smtp.gmail.com with ESMTPSA id s5-20020a05620a0bc500b006b555509398sm15545231qki.136.2022.07.19.14.23.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Jul 2022 14:23:43 -0700 (PDT) Date: Tue, 19 Jul 2022 17:23:41 -0400 From: Peter Xu To: Axel Rasmussen Cc: Alexander Viro , Andrew Morton , Dave Hansen , "Dmitry V . Levin" , Gleb Fotengauer-Malinovskiy , Hugh Dickins , Jan Kara , Jonathan Corbet , Mel Gorman , Mike Kravetz , Mike Rapoport , Nadav Amit , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , zhangyi , linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH v4 4/5] userfaultfd: update documentation to describe /dev/userfaultfd Message-ID: References: <20220719195628.3415852-1-axelrasmussen@google.com> <20220719195628.3415852-5-axelrasmussen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220719195628.3415852-5-axelrasmussen@google.com> X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_NONE autolearn=unavailable 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 Tue, Jul 19, 2022 at 12:56:27PM -0700, Axel Rasmussen wrote: > Explain the different ways to create a new userfaultfd, and how access > control works for each way. > > Signed-off-by: Axel Rasmussen Acked-by: Peter Xu -- Peter Xu