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Shutemov" CC: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Jerome Glisse , Paolo Bonzini , "aarcange@redhat.com" Subject: RE: [RFC PATCH v1 2/4] mm: also set VMA in khugepaged range invalidation Thread-Topic: [RFC PATCH v1 2/4] mm: also set VMA in khugepaged range invalidation Thread-Index: AdWwBEq3Z5BwlJ79QIOTA1r/KOTZSgANZT+AAAD2ATA= Date: Wed, 11 Dec 2019 16:16:21 +0000 Message-ID: References: <20191211154429.7tscxcqk725guyce@box> In-Reply-To: <20191211154429.7tscxcqk725guyce@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: 70b20289-ef7e-4da8-cc13-08d77e55765d x-ms-traffictypediagnostic: DB7PR02MB4650:|DB7PR02MB4650:|DB7PR02MB4650: x-microsoft-antispam-prvs: x-ms-exchange-transport-forked: True x-ms-oob-tlc-oobclassifiers: OLM:595; x-forefront-prvs: 024847EE92 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(136003)(346002)(39860400002)(396003)(366004)(376002)(199004)(189003)(76116006)(4744005)(9686003)(71200400001)(26005)(316002)(81156014)(54906003)(4326008)(6506007)(52536014)(66446008)(8676002)(2906002)(66946007)(64756008)(66476007)(81166006)(5660300002)(66556008)(33656002)(7696005)(86362001)(55016002)(8936002)(186003)(6916009)(478600001);DIR:OUT;SFP:1102;SCL:1;SRVR:DB7PR02MB4650;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: fj7Iqx9DsJXpaAdNE2j2LpdwD20gfHax47Q6IoflEhVJiQ3nFRWp623KIGXCtai/GoVRGaJVD6jq2lbCmuI878EQNPsgylUcA0JiRELKmjEFVr2PtoQh22xDPsPxna1rnF/lJ9vES0Mz4lr7KYEY9H8DFvIQ71rGl7SX1hG9kaxoWPK5XRaU0DJpMpl+CHOGP8V6gm6byTj2GghDYlWjB7SMklDMr4Lr7+3sRE6ijhi6nLiUGE4eDWaUGJq4fSLplIcv85ktx3YaXS9X3vyjkFsuT6/ihWYtMLZsNQFZlIQFjErpdMfZ2zkZMxqnMHVZBBKWdZVwm5CTzt9EmrVx41DPIvspA/89jLqRUTlM7rWHFIpikPgJmHcb8bvwp03335hmNmnq9C07bv8x+VuEjggMhgNqIMl7bCSQFAe/P5szSgojVs8nZkearCQPXj8D 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: 70b20289-ef7e-4da8-cc13-08d77e55765d X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Dec 2019 16:16:21.8613 (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: kBHN+XecFBL8dKZ8W59KgZ8p0DlPpQtCRpwVvGZulZeJNs/0tSBXhKRYxZDEHDOkt35mantzBH70x/S4Oq8WfD5txa3zha/skgRhj/SNQwI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR02MB4650 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 09:29:21AM +0000, Mircea CIRJALIU - MELIU wrote: > > MMU notifier client may need the VMA for extra info. > > This change is needed by the remote mapping feature that inspects anon > > VMAs with huge mappings. >=20 > The change itself is okay, but commit message should be better. >=20 > Do we have any user of mmu notifiers in current kernel that affected by t= he > missing vma here? No. This patch is a small part of a series of commits for the remote mappin= g feature. The kernel can do well without it. >=20 > And subject starting with 'also' looks wrong to me. >=20 > -- > Kirill A. Shutemov Mircea