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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78064C2BCA1 for ; Fri, 7 Jun 2019 18:51:23 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 23A55208E3 for ; Fri, 7 Jun 2019 18:51:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=Mellanox.com header.i=@Mellanox.com header.b="owwp0k7A" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23A55208E3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B2DBC6B0006; Fri, 7 Jun 2019 14:51:22 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id ADEAB6B000A; Fri, 7 Jun 2019 14:51:22 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9A7B86B000C; Fri, 7 Jun 2019 14:51:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by kanga.kvack.org (Postfix) with ESMTP id 4BDFB6B0006 for ; Fri, 7 Jun 2019 14:51:22 -0400 (EDT) Received: by mail-ed1-f71.google.com with SMTP id s5so4435204eda.10 for ; Fri, 07 Jun 2019 11:51:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:from:to:cc:subject:thread-topic :thread-index:date:message-id:references:in-reply-to:accept-language :content-language:content-id:content-transfer-encoding:mime-version; bh=MRw/IJJcG2eME8/d+ka6VpE5+lGTha4ZmhExxxxr+Oc=; b=SB6KThBBX7GZEvLn0WPIN6C8HWAmwT1NvCP50h3E+hkY4dbUYtxu6iG/DT59V4VL1T TwqQA8hUb/BTQhCmv0fl+HKfle50bj6wbQ6Scz6TJE6Buvj5B53Y92iReuNUQic0WuUz OUWGsLQYhaHSyPvdUYKCCJ6bLYrIHXKxcYV1pAaDnZE4ymRSlbeEVTvJnDfFAS7lurM0 L53ILcckj1C8MVO4benNGUDrLO8127yJUqhqqp9PBiFidJBy9GdAU4ewpWG/vHvYAEze h2JwdxhmtQafH+9RUR6g2ns66YwHw6/pj8ZTMK0jWt23e1i2v/S6PfxbWZd5XcjXnIOt CwaA== X-Gm-Message-State: APjAAAUboifzGbyLwmZaw1WINHdoaloO5xkfDl7L0i+bCtqrowNP6I/V 3ZTxOnSDso6Sq09bIsGiOX8kz9g+WD4oM+Np4Vb7Bm1Rp78LCH+8gwjG8QJ9whr7E6nXSbbGPlz Cws8ukjF16DLi74VfqIN1lQetrt/qDKTUSGzbrUotA7k6yg07iRO/SiRRH642szaQRA== X-Received: by 2002:a50:92a5:: with SMTP id k34mr32270866eda.90.1559933481877; Fri, 07 Jun 2019 11:51:21 -0700 (PDT) X-Google-Smtp-Source: APXvYqwwgWTEcQeddx54hR+Keavv9PuVTeYYbJNi0rmr1/5y9qe441GSMSgbnSkyOgV+g7hr7dRj X-Received: by 2002:a50:92a5:: with SMTP id k34mr32270822eda.90.1559933481292; Fri, 07 Jun 2019 11:51:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1559933481; cv=none; d=google.com; s=arc-20160816; b=ATfz9wpomzVlkATub/RHX49RdbxmLmICgTHxslfVCzuhS4X5BJpi61tIFkRh7JdJzl cdrjH+f0ulocKdCagB4JlgRXFKsq4qpcFPPIosDQGyBHSn/UaVUjGN5V7dCp5ePjIfTd Kri9/6ZP7lcooZzEq9KaRcU7E2FMLK8/33FuQAyddoejE+3ykEdUrosQncLqfaAUbQSD /9/H9NOWG7iAtl2mRGQvNFyyEFAU8hKD2kZvR3faE29FjehI2Do4R62D7ub3v34pnswz PUksDpBJPJHVp0X+WN//5MjvdxYS6ZV9mquYrdrjj2Bkvgxegdazgv8JX+3H2H8+nMN1 RJxg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:content-transfer-encoding:content-id:content-language :accept-language:in-reply-to:references:message-id:date:thread-index :thread-topic:subject:cc:to:from:dkim-signature; bh=MRw/IJJcG2eME8/d+ka6VpE5+lGTha4ZmhExxxxr+Oc=; b=kxWbV36AWSWZ/9DZ3qpAtTmtYijLDgbfy+huJw4LohcaJ3RqzR0MfuZflt7t6UzJfV 58oBxisxOkaHEmbh7zaniln9aryfKyW7spF/HBOuM5kXZIJ8Rryo52hqepY2zu8/RgWC ViKDfJ42iU9mMPSBcZHpbQoiyLQJ3P86ySt1bVil8maVT9vT8wB2IEJxWKskQlFw8WV8 FmviL3RsAhD1WSMakOII1Rxk2uDQXQbU6UUN0ZQDIoIVVFgfEUfVaucM3ycdnczjXx27 8AV5ih01gn/EQAI3glAGG71u5TMH7knFE5vPAdoxzH2CErAhpthpFLu/gw4BVSphLV46 4fwg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector2 header.b=owwp0k7A; spf=pass (google.com: domain of jgg@mellanox.com designates 40.107.3.60 as permitted sender) smtp.mailfrom=jgg@mellanox.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Received: from EUR03-AM5-obe.outbound.protection.outlook.com (mail-eopbgr30060.outbound.protection.outlook.com. [40.107.3.60]) by mx.google.com with ESMTPS id x18si1630442ejo.390.2019.06.07.11.51.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 07 Jun 2019 11:51:21 -0700 (PDT) Received-SPF: pass (google.com: domain of jgg@mellanox.com designates 40.107.3.60 as permitted sender) client-ip=40.107.3.60; Authentication-Results: mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector2 header.b=owwp0k7A; spf=pass (google.com: domain of jgg@mellanox.com designates 40.107.3.60 as permitted sender) smtp.mailfrom=jgg@mellanox.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=MRw/IJJcG2eME8/d+ka6VpE5+lGTha4ZmhExxxxr+Oc=; b=owwp0k7AsULPqOBGpTrCpr/hPuxURHvaHf8Yx9ICyohivwEOklO9ywX+Qh4bcUG08fJeqRxjh8L1tV0qIVdBQhjkvAl1ndf6DttEAkBjyj037lvf/+ycsIFIK2MESxOA/2lSz6ql5BZmSsdeq70zLUmjYULHN1gYwWthB91OQi8= Received: from VI1PR05MB4141.eurprd05.prod.outlook.com (10.171.182.144) by VI1PR05MB5869.eurprd05.prod.outlook.com (20.178.125.142) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1965.14; Fri, 7 Jun 2019 18:51:18 +0000 Received: from VI1PR05MB4141.eurprd05.prod.outlook.com ([fe80::c16d:129:4a40:9ba1]) by VI1PR05MB4141.eurprd05.prod.outlook.com ([fe80::c16d:129:4a40:9ba1%6]) with mapi id 15.20.1965.011; Fri, 7 Jun 2019 18:51:18 +0000 From: Jason Gunthorpe To: Ralph Campbell CC: Jerome Glisse , John Hubbard , "Felix.Kuehling@amd.com" , "linux-rdma@vger.kernel.org" , "linux-mm@kvack.org" , Andrea Arcangeli , "dri-devel@lists.freedesktop.org" , "amd-gfx@lists.freedesktop.org" Subject: Re: [PATCH v2 hmm 03/11] mm/hmm: Hold a mmgrab from hmm to mm Thread-Topic: [PATCH v2 hmm 03/11] mm/hmm: Hold a mmgrab from hmm to mm Thread-Index: AQHVHJfsjve3VpvfK0iKvy9k76PyJKaQiAIAgAACw4A= Date: Fri, 7 Jun 2019 18:51:18 +0000 Message-ID: <20190607185113.GF14771@mellanox.com> References: <20190606184438.31646-1-jgg@ziepe.ca> <20190606184438.31646-4-jgg@ziepe.ca> <605172dc-5c66-123f-61a3-8e6880678aef@nvidia.com> In-Reply-To: <605172dc-5c66-123f-61a3-8e6880678aef@nvidia.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MN2PR13CA0020.namprd13.prod.outlook.com (2603:10b6:208:160::33) To VI1PR05MB4141.eurprd05.prod.outlook.com (2603:10a6:803:4d::16) authentication-results: spf=none (sender IP is ) smtp.mailfrom=jgg@mellanox.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [156.34.55.100] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c00a4373-03ca-4166-2866-08d6eb791ffd x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600148)(711020)(4605104)(1401327)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7193020);SRVR:VI1PR05MB5869; x-ms-traffictypediagnostic: VI1PR05MB5869: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:2089; x-forefront-prvs: 0061C35778 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(346002)(396003)(366004)(39860400002)(136003)(189003)(199004)(3846002)(558084003)(86362001)(316002)(52116002)(6246003)(11346002)(8676002)(8936002)(66556008)(71200400001)(81166006)(6506007)(305945005)(54906003)(6116002)(229853002)(71190400001)(6486002)(66066001)(64756008)(66446008)(7736002)(66946007)(102836004)(99286004)(6916009)(478600001)(73956011)(6512007)(1076003)(53936002)(14454004)(6436002)(66476007)(256004)(25786009)(76176011)(33656002)(81156014)(68736007)(5660300002)(446003)(486006)(2616005)(2906002)(53546011)(186003)(4326008)(36756003)(26005)(386003)(476003);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR05MB5869;H:VI1PR05MB4141.eurprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: n+stqAix+Tn0aLVPjWDW2vTKorm3d9SSzs9OhKDw4dqDsSeXwX5pqh7XhCG+hEeu7uLmRAQQdgUkJx5jj6fJHFkqBhzOi7ruFWDWqVsdYduWB6PbvrD2HcrvA+iM+FRcffuJuScRsxqKBUtTNrpTzTVcxd7hWvi1f6xtWJ+HAur5Bv0lds+VdQ6ykex7wCpddULcIHAhNQJW9ToR9TH18kHVWRe8Xcz+BWN6B5zt3De66vZGAP8QOgu+R0QaoIiRDy5YvJIQRfnv5M/rILFVkMJWncMZauZIxEOoLwDoXEJnQ+4bwWvY69fOyC8DjOaZ/bLkN6zkhbbDgY253SI2RvlUJRTKGHRseCfmhJOpamCSZWCRxLf0ieqKU7KgzPOwoXUEGou7u8tJaJF6IEDkLOpTDIt9cuRrWqcfKrnX1Dg= Content-Type: text/plain; charset="us-ascii" Content-ID: <0ED1D20CB91BB94C8ED721D38322F396@eurprd05.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: c00a4373-03ca-4166-2866-08d6eb791ffd X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Jun 2019 18:51:18.4066 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jgg@mellanox.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR05MB5869 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jun 07, 2019 at 11:41:20AM -0700, Ralph Campbell wrote: >=20 > On 6/6/19 11:44 AM, Jason Gunthorpe wrote: > > From: Jason Gunthorpe > >=20 > > So long a a struct hmm pointer exists, so should the struct mm it is >=20 > s/a a/as a/ Got it, thanks Jason