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Wed, 9 Dec 2020 09:57:22 +0000 From: =?iso-2022-jp?B?SE9SSUdVQ0hJIE5BT1lBKBskQktZOH0hIUQ+TGkbKEIp?= To: Oscar Salvador CC: "akpm@linux-foundation.org" , "n-horiguchi@ah.jp.nec.com" , "vbabka@suse.cz" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] mm,hwpoison: Return -EBUSY when migration fails Thread-Topic: [PATCH] mm,hwpoison: Return -EBUSY when migration fails Thread-Index: AQHWzg2sNArUmf7c2EugXD6uE14QRanuh0UA Date: Wed, 9 Dec 2020 09:57:22 +0000 Message-ID: <20201209095722.GA24928@hori.linux.bs1.fc.nec.co.jp> References: <20201209092818.30417-1-osalvador@suse.de> In-Reply-To: <20201209092818.30417-1-osalvador@suse.de> Accept-Language: ja-JP, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: suse.de; dkim=none (message not signed) header.d=none;suse.de; dmarc=none action=none header.from=nec.com; x-originating-ip: [165.225.110.205] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f2e51b35-ecd2-43d0-c9a1-08d89c28d33b x-ms-traffictypediagnostic: TYBPR01MB5373: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7219; 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charset="iso-2022-jp" Content-ID: <81BD22A132507641A10BB735E4B74152@jpnprd01.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nec.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TY1PR01MB1852.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f2e51b35-ecd2-43d0-c9a1-08d89c28d33b X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Dec 2020 09:57:22.8921 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: e67df547-9d0d-4f4d-9161-51c6ed1f7d11 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 0rXWJ7577SlyKfeOJL5LZgumFjLFn+Jc1OzUA6e4WShgCEUADH2O8moxAGhW6Gx+RNSWl1UfFGOwu9p6GfreCQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYBPR01MB5373 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 Wed, Dec 09, 2020 at 10:28:18AM +0100, Oscar Salvador wrote: > Currently, we return -EIO when we fail to migrate the page. >=20 > Migrations' failures are rather transient as they can happen due to > several reasons, e.g: high page refcount bump, mapping->migrate_page > failing etc. > All meaning that at that time the page could not be migrated, but > that has nothing to do with an EIO error. >=20 > Let us return -EBUSY instead, as we do in case we failed to isolate > the page. >=20 > While are it, let us remove the "ret" print as its value does not change. >=20 > Signed-off-by: Oscar Salvador Acked-by: Naoya Horiguchi =