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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 230F0C00454 for ; Wed, 11 Dec 2019 17:14:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DC1F82054F for ; Wed, 11 Dec 2019 17:14:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=bitdefender.onmicrosoft.com header.i=@bitdefender.onmicrosoft.com header.b="YB7k7lOw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730931AbfLKROB (ORCPT ); Wed, 11 Dec 2019 12:14:01 -0500 Received: from mail-eopbgr20102.outbound.protection.outlook.com ([40.107.2.102]:33377 "EHLO EUR02-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729786AbfLKROB (ORCPT ); Wed, 11 Dec 2019 12:14:01 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=gKhkbAFRqncacQnCZi84v8xXyqUTyrTlEhWuRrFllW7nhiQIsHNKUyy3k4BYVYl4H/CnxbZz6UV7G9e5X0ykWCXJD4iqjMAhqJb3wXZcPPBC08aXgEcV3FAHkyE5qF9fbmTErq9bFgkfOaiIavb+9wnh5eV7yOZcyRVhYSPPlTV2FPnmP0gxGhTgWBaaQEIofR0Fd71eEf9JtJ+6Ie3m4fuco51zS2tusVAInqEIABYNEYqiNc5D2b/xuy6Ez8FyuPhyonlx8tL610C5VI+spsjOoyuNALEV2hp7zXusnW+JlCHA60Cg9sI3Dt8XDA8K5SmONlkZ6t4bKqwosw924g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=EUe8aM1uh6dUUrYgwjdDsjHERyVByZDwBDP+ft1l4fk=; b=fMtsx9yOy1fYTkdgrEjfeYG8iZKOxEWwGVCBW2Njh9Ax5dwcUkviZsFY4GfzmyuDKBWwvPp+BA9J30rB9ojef22eGjmpGlCTBq0oP/pxl2ZNeiwbIC8lntfMC8drxgKkGB8gUt1ub/iX8R3Urgy80YtNYbcCHXsLR8F42/qVKQ4Orxqqu3pXTrJOeWSs9wcNVwCikNeDnIKI2KRJsqJPRWW3buO3QKrssLC5YCe9zAOpbuXZKCcPFwmUG66TJao1h7xy0Ce9EU387CKqfdXBhagAV6UaYuQuh3wbGLzs1Hv8ZUYjMlFIFHd+ahUR9qmRlMxRywI2wCbqpufkPzc8nA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=bitdefender.com; dmarc=pass action=none header.from=bitdefender.com; dkim=pass header.d=bitdefender.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bitdefender.onmicrosoft.com; s=selector2-bitdefender-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=EUe8aM1uh6dUUrYgwjdDsjHERyVByZDwBDP+ft1l4fk=; b=YB7k7lOwVTSyQkpYU8sONwS6kFipw0TQYnAAo+ZJEjFy5zh1CDkO5mEhKwf+x6WXZc3o1OYJU+Vx5XzWoheztqQjhMLpbBd8ml8L1VpZeZd3bhEokD0rC3DcBsS3Ijl7NL4qYSeWyp+JDQXqYA+oqPxThdDJY/NYka3vctEwEQw= Received: from DB7PR02MB3979.eurprd02.prod.outlook.com (20.177.121.157) by DB7PR02MB4137.eurprd02.prod.outlook.com (20.176.239.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2516.12; Wed, 11 Dec 2019 17:13:57 +0000 Received: from DB7PR02MB3979.eurprd02.prod.outlook.com ([fe80::65e5:e5bd:a115:ce06]) by DB7PR02MB3979.eurprd02.prod.outlook.com ([fe80::65e5:e5bd:a115:ce06%2]) with mapi id 15.20.2516.018; Wed, 11 Dec 2019 17:13:57 +0000 From: Mircea CIRJALIU - MELIU To: "Kirill A. Shutemov" CC: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Jerome Glisse , Paolo Bonzini , "aarcange@redhat.com" Subject: RE: [RFC PATCH v1 4/4] mm/gup: flag to limit follow_page() to transhuge pages Thread-Topic: [RFC PATCH v1 4/4] mm/gup: flag to limit follow_page() to transhuge pages Thread-Index: AdWwBRVo97ip28i7RLG6c8GTBoWkWgANoD+AAAKKloA= Date: Wed, 11 Dec 2019 17:13:57 +0000 Message-ID: References: <20191211155645.pkxphc4uo7ir6pbb@box> In-Reply-To: <20191211155645.pkxphc4uo7ir6pbb@box> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=mcirjaliu@bitdefender.com; x-originating-ip: [91.199.104.6] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 45e8d451-3932-4f22-0f9c-08d77e5d8228 x-ms-traffictypediagnostic: DB7PR02MB4137:|DB7PR02MB4137:|DB7PR02MB4137: x-microsoft-antispam-prvs: x-ms-exchange-transport-forked: True x-ms-oob-tlc-oobclassifiers: OLM:4502; x-forefront-prvs: 024847EE92 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(376002)(39860400002)(396003)(366004)(136003)(199004)(189003)(52536014)(26005)(478600001)(4326008)(66446008)(6506007)(76116006)(186003)(54906003)(7696005)(2906002)(66946007)(33656002)(81156014)(64756008)(81166006)(9686003)(55016002)(71200400001)(8936002)(8676002)(86362001)(6916009)(4744005)(66556008)(66476007)(5660300002)(316002);DIR:OUT;SFP:1102;SCL:1;SRVR:DB7PR02MB4137;H:DB7PR02MB3979.eurprd02.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: bitdefender.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: zczQ7k16rOHvgTahbCgOOw1H2SX8stGwsQJ5E7x5HzpcgDX8ARPl7kvys9XRKzJemDiFpjaZ0DOztTYyTM/uGy5Bfsnbx95D4RXhJstJ3VPkbmw7SCXcSmQXnVC5R26w3gi8rA8snDp5ESgXQkypo4uGAqWVbfVYmDTRmrtguIPXMBMlQWM+vQ4zTN5tncheXKZZThCqLvkNaRUwlAzInLQy+h2HTc3WvqYTMxpYr39VX5cUh9buF+yJ/fk/MI4IUQE/ZmEYTbSCIi3dGST8/mjsZ7V2WaoYbZwFCmyiqfMHRDcAN46viieF9stJ0phiOOetGYibbaremMinjPB4/S1BHTgaeb47SSRvOMMxofw5+uy8obuZ1KToWA0fAKYJiIv+bYzH+iNtAHBteR9BeVSCYK0iaBARCgKHHAYdQfYz8q2MjkpGBwtU0CspU0VF Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: bitdefender.com X-MS-Exchange-CrossTenant-Network-Message-Id: 45e8d451-3932-4f22-0f9c-08d77e5d8228 X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Dec 2019 17:13:57.6546 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 487baf29-f1da-469a-9221-243f830c36f3 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: vonPK8VLoQgAHL/5Sgsgt8aAD87wTMVQhBWADdcfZC+KnCsxZIJvYk9OL+lEmjQmZz8FMO6fJo9Odn5LlvrxyFbTbSKXiSSs7XSvOiMGodQ= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR02MB4137 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Wed, Dec 11, 2019 at 09:29:19AM +0000, Mircea CIRJALIU - MELIU wrote: > > Sometimes the user needs to look up a transhuge page mapped at a given > address. >=20 > There is no such examples in the current kernel, right? This is a helper patch for remote mapping main patch. It helps to establish an exact mirror of another process page table. And exact also involves huge mappings. >=20 > -- > Kirill A. Shutemov >=20 > ________________________ > This email was scanned by Bitdefender