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Wed, 14 Oct 2020 00:06:06 +0000 From: =?iso-2022-jp?B?SE9SSUdVQ0hJIE5BT1lBKBskQktZOH0hIUQ+TGkbKEIp?= To: Oscar Salvador CC: "n-horiguchi@ah.jp.nec.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v5 4/4] mm,hwpoison: drop unneeded pcplist draining Thread-Topic: [PATCH v5 4/4] mm,hwpoison: drop unneeded pcplist draining Thread-Index: AQHWoW89NxDWuW2O/UmVydOqXMCHaqmWOMAA Date: Wed, 14 Oct 2020 00:06:06 +0000 Message-ID: <20201014000606.GB6087@hori.linux.bs1.fc.nec.co.jp> References: <20201013144447.6706-1-osalvador@suse.de> <20201013144447.6706-5-osalvador@suse.de> In-Reply-To: <20201013144447.6706-5-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: ad9ee4fd-83c1-4913-8502-08d86fd4f298 x-ms-traffictypediagnostic: TY2PR01MB3418: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; 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charset="iso-2022-jp" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nec.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TY2PR01MB3210.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ad9ee4fd-83c1-4913-8502-08d86fd4f298 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Oct 2020 00:06:06.6257 (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: bimMNNYea7KqjwvNiXQQurgJMsASkNIhhFFbuOT4twkcLGGCSH4CBFg8Hg+hx34FLg/c8eSz0Qjo6z30d4QndA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TY2PR01MB3418 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 13, 2020 at 04:44:47PM +0200, Oscar Salvador wrote: > memory_failure and soft_offline_path paths now drain pcplists by calling > get_hwpoison_page. >=20 > memory_failure flags the page as HWPoison before, so that page cannot > longer go into a pcplist, and soft_offline_page only flags a page as > HWPoison if 1) we took the page off a buddy freelist 2) the page was > in-use and we migrated it 3) was a clean pagecache. >=20 > Because of that, a page cannot longer be poisoned and be in a pcplist. >=20 > Signed-off-by: Oscar Salvador Thank you! Acked-by: Naoya Horiguchi =