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=-5.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 BCE77C433B4 for ; Wed, 21 Apr 2021 00:57:09 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 06FE261409 for ; Wed, 21 Apr 2021 00:57:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 06FE261409 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=nec.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 733336B006C; Tue, 20 Apr 2021 20:57:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6E3056B006E; Tue, 20 Apr 2021 20:57:08 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 50E196B0070; Tue, 20 Apr 2021 20:57:08 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0056.hostedemail.com [216.40.44.56]) by kanga.kvack.org (Postfix) with ESMTP id 333DD6B006C for ; Tue, 20 Apr 2021 20:57:08 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E4FA982499B9 for ; Wed, 21 Apr 2021 00:57:07 +0000 (UTC) X-FDA: 78054560094.28.37630A2 Received: from JPN01-TY1-obe.outbound.protection.outlook.com (mail-eopbgr1400041.outbound.protection.outlook.com [40.107.140.41]) by imf18.hostedemail.com (Postfix) with ESMTP id DC218200025C for ; Wed, 21 Apr 2021 00:57:07 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Q/O2jNTkcKBJDUhZJuj5uoVVhmZQ5gaOKrCJblw0QSTwZefeqzb+3SHm4Kkw9BSzfmvtcbs9IJo3EoAJb8j3FApvKstTRVD/V8mxRa8UfBzxh9X5BT9i52LOT6U310VG4OAootJz2/3niOZQTTeR/o6mb15LrKFOxAFjOqRhf1Gk/2bYwlLCqpWO71Qm9YQ+YWlPF8RjT9AtjbG7wCOA5VAZ8R0HVtRKx4R578MrHG32MlfOzrNpjgw3Y9z+OGoSOqYsQbKePaEOONQWz/TgSlzNOoom5n601zjBSRSvOpUKwH8oZZg2ZXI6tmDyWuimMrD9h6UeD7uLR4k0QSHutg== 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=jUCumuvt9VeIhJ1T6utEt2CD8IP2QhUr7vPzq0jHX+U=; b=HC56fL8QbNwi8BxGYA+WO+pnxIqVERcx3h5daVC3yNBa6fLBc3qP92LALnRlx312OPVkTXmIkEWqI8hWn/tTRgz+9Mm67JwTevRkH5L5W+guzjn/tJSCKoEsG72HlE/sAmyGHLRPaOW3m8cwq+88c363fA6lnh9zaAx8Jobvd3DwqTlWl5l8R82ZG0E0nNosgSMAMTskBAbQbYzRcGIQHFXJ3m3FdT4r5X/Nx+Mg7DNbiSW61LD0ucsi7l3A85I4GhfQ14Z4l9nCwaKHYPW1rGIsjQbFwDxQlkVclsywx8Bpf6OjjMXUzgcP86V0TmaCEhvENikLpw1tr7EcKy4yvw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nec.com; dmarc=pass action=none header.from=nec.com; dkim=pass header.d=nec.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nec.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=jUCumuvt9VeIhJ1T6utEt2CD8IP2QhUr7vPzq0jHX+U=; b=Q5GuRAAZ1BtdIYKPOnKQj6XcQBohQAKrixdBxvZ5avtYqJZxbeYtmKkv0GZpm1NgWgHTT01XZwHUaSXCdgFzLFn0C0RpKJVO8sufpyriB0OY4fEuZsDzc2UQaalxOHDF6t6/A0XhEZZmSXNJhsXIAI7j1qEI98NSQTzfylfj/aI= Received: from TY1PR01MB1852.jpnprd01.prod.outlook.com (2603:1096:403:8::12) by TYAPR01MB3965.jpnprd01.prod.outlook.com (2603:1096:404:c6::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4042.16; Wed, 21 Apr 2021 00:57:01 +0000 Received: from TY1PR01MB1852.jpnprd01.prod.outlook.com ([fe80::1552:1791:e07c:1f72]) by TY1PR01MB1852.jpnprd01.prod.outlook.com ([fe80::1552:1791:e07c:1f72%7]) with mapi id 15.20.4042.024; Wed, 21 Apr 2021 00:57:01 +0000 From: =?utf-8?B?SE9SSUdVQ0hJIE5BT1lBKOWggOWPo+OAgOebtOS5nyk=?= To: Borislav Petkov CC: Naoya Horiguchi , "linux-mm@kvack.org" , Tony Luck , Aili Yao , Andrew Morton , Oscar Salvador , David Hildenbrand , Andy Lutomirski , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v1 1/3] mm/memory-failure: Use a mutex to avoid memory_failure() races Thread-Topic: [PATCH v1 1/3] mm/memory-failure: Use a mutex to avoid memory_failure() races Thread-Index: AQHXL+1ETVXNtZ717UymKkytASjJ46q8HJYAgAD2FoCAACoPgIAA9eGA Date: Wed, 21 Apr 2021 00:57:01 +0000 Message-ID: <20210421005659.GA24391@hori.linux.bs1.fc.nec.co.jp> References: <20210412224320.1747638-1-nao.horiguchi@gmail.com> <20210412224320.1747638-2-nao.horiguchi@gmail.com> <20210419170538.GG9093@zn.tnic> <20210420074625.GA24451@hori.linux.bs1.fc.nec.co.jp> <20210420101657.GF5029@zn.tnic> In-Reply-To: <20210420101657.GF5029@zn.tnic> Accept-Language: ja-JP, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: alien8.de; dkim=none (message not signed) header.d=none;alien8.de; dmarc=none action=none header.from=nec.com; x-originating-ip: [165.225.97.70] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 679d6399-b9d6-4aec-25a7-08d904605f5e x-ms-traffictypediagnostic: TYAPR01MB3965: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:TY1PR01MB1852.jpnprd01.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(376002)(136003)(39860400002)(346002)(396003)(4326008)(33656002)(26005)(76116006)(86362001)(186003)(478600001)(7416002)(83380400001)(66946007)(122000001)(85182001)(9686003)(38100700002)(2906002)(6512007)(6916009)(1076003)(8936002)(6506007)(71200400001)(53546011)(55236004)(5660300002)(54906003)(316002)(6486002)(66476007)(66556008)(64756008)(8676002)(66446008);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata: =?utf-8?B?ejk5bjdPL2hzUzU0eWF1eVMxbDFlOTR4eG1USktKV3RrVkhQZWRzclJaelpn?= =?utf-8?B?eGxKSFordUMrRzNYTUloaGFNVXY0bGUrRDdaQkNFVzM4Qm1mZUZJcHdMdGJz?= =?utf-8?B?eU1ydmpKdSs5OFRWUGwyYlZUWEhJUlpWWk1KMmg0WUR1eHdUZFd0ZjV1R1FT?= =?utf-8?B?V01ZSHFuVDdtZnZGeHNyR21ITDNIekg0YnlvOXExWnh3bWwrWUVkOHVXaFgy?= =?utf-8?B?UHR1TGlKS0ZDRmZ6V0l1SFhHb2dkWXJFWUpBWGVVRWFhdkQzK05zYXFXMHp0?= =?utf-8?B?WlFQRFlad0hPY2x4YmhxUjZnSGdIL25VOStQbTc3R0F2MWZwT1gySnUyZXVi?= =?utf-8?B?ZDZNM3FrY3ozcDBnUTNaME1NNlNLLzQ4WmxPcUpXS2dWekMyYks2SUJjYU1P?= =?utf-8?B?a3AvNmkwdlpES0VHUURrM0RqS3ZTdFllWTN6MVhaZTZOUjVyYVhFbWo0NUhk?= =?utf-8?B?dUI3ZG9pOEZqcFlYWVYzOGI2cXBmbmxjWVY1RnJGMWl3V001QktWMkxnN1Nw?= =?utf-8?B?WTRoWWtEcTFJSUoyM3hwMkhPZzZRM3hXeGNLaXk0cExTMiszR1lQVG1xU3hu?= =?utf-8?B?Njk5V2t6eDNKK0x2QTRoNGFjTmEvYzNBUnNSS09Jci8xNGN1VHU1VzQxa3hO?= =?utf-8?B?NTI0aWh4dXpJRk9TUW44eUVVbmw4bnFOS2xMbi8vQW0rMERtNFRKR0xYcUZk?= =?utf-8?B?VHloczJvNmdxZmwzQm53TC9XTkxZTXJXVFF5UTRtdWtOVDloZFk0VlJoRjQ3?= =?utf-8?B?dk5acjNCdlViTUJKT2oyejBqVGZac2hRUUZKS3lxL2I5S25LVm9nRGRpL0RI?= =?utf-8?B?b2h2dUhCcUd0SHhoL1FrUE1pM0o2UCtTU2oxQXUwZTJFZ3lnbnRXdEtxdWkz?= =?utf-8?B?ckkwYkpKV0FwUlpoaGdSRTdpbXhaK0puYnBtYlc5VFlNaUZRRWJMWWYvdUl1?= =?utf-8?B?UWw0UkVYZmRaSEVNY0dRcXpkMTQyZmVLNkx4UHRoSHZUZGdxQzdneU0ramVM?= =?utf-8?B?bElrVEo1SkxNWFd1MDlvMStqblk3OHVtQ056NjhqUU9HOWt5VDJLUGRzK2ZS?= =?utf-8?B?SlRBSGxhTC94OWhZSXhUNGdtR2Exck9BaStHanJyb1I4WmdkU0cyZU5TTWVK?= =?utf-8?B?ZTljOWFMdHJIVC9lMm0vcVB1YVVKbDhxamk3WHJnQUgzc0FQZDdPUWtsaEpP?= =?utf-8?B?OS81NmttS01LcURNdVBhRzZQZmRaSFNJN3JaOXZyRzNabTcyNEdOSm5qYlA1?= =?utf-8?B?bW95WlJEdTFRZzM0U1VrS0dRMXE1dC9IMGRPL1gvUmEzdzA0UDVwdFRWMERD?= =?utf-8?B?RXJaVGJDYzRoU0pUUW81WGFERTJTT3MzSkNQUVVFY2d5OWZDSU1tUzZEUlIv?= =?utf-8?B?dlQ4TEgrMGpEMU5RZmV0d2Y0V09Vck1PZkVkNXJ5Q1FYaXlDWFBlTGY5WEdL?= =?utf-8?B?TU5UZDFYcEFjVkhtU04wS1ZKQnpObXZMYlhueE5aYUpPV2ttdXdWeWJNNWto?= =?utf-8?B?ZDhuaG9tSmgrNkV1ejlhK3ZHM1pzV2FMS2Q2dHFHRDRvRlUzblF5NTNybW8x?= =?utf-8?B?K2lGcVVUZERMSy9GY3lJbVJXbjdtVEZXSmRFRUk1cnVOVTBhMU8vODNvbmZ5?= =?utf-8?B?OWdSWEhTTHJjdXE3VXluS21Sc0NRVmhHVWFhWFpTTk9Wd2svTG5qZ2ZJaUxO?= =?utf-8?B?a3E0eFA0K1dkV3RxYnorMUU1QlBhalNkcHQzL1J5UUdjYXZ1bHgrbjdKZG9q?= =?utf-8?Q?Pq76af9OrzEdcOMEoh+4vGVqi0cESwdM5XLAgbD?= Content-Type: text/plain; charset="utf-8" Content-ID: <28C232CC4084D04596F1914B372EC6B0@jpnprd01.prod.outlook.com> Content-Transfer-Encoding: base64 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: 679d6399-b9d6-4aec-25a7-08d904605f5e X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Apr 2021 00:57:01.1643 (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: XZ9oII8iOkKgDtPCSoQdWck1wuPCWW7CM75WbfKQsDx3hHICPbvrOgLBYet9ISZS+hGsAlqIz0uZdASE4JJMHA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYAPR01MB3965 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: DC218200025C X-Stat-Signature: wxrwrf73hm4a88jduj954fjek5gbcpik Received-SPF: none (nec.com>: No applicable sender policy available) receiver=imf18; identity=mailfrom; envelope-from=""; helo=JPN01-TY1-obe.outbound.protection.outlook.com; client-ip=40.107.140.41 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1618966627-253402 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: T24gVHVlLCBBcHIgMjAsIDIwMjEgYXQgMTI6MTY6NTdQTSArMDIwMCwgQm9yaXNsYXYgUGV0a292 IHdyb3RlOg0KPiBPbiBUdWUsIEFwciAyMCwgMjAyMSBhdCAwNzo0NjoyNkFNICswMDAwLCBIT1JJ R1VDSEkgTkFPWUEo5aCA5Y+jIOebtOS5nykgd3JvdGU6DQo+ID4gSWYgeW91IGhhdmUgYW55IG90 aGVyIHN1Z2dlc3Rpb24sIHBsZWFzZSBsZXQgbWUga25vdy4NCj4gDQo+IExvb2tzIGFsbW9zdCBv ay4uLg0KPiANCj4gPiBGcm9tOiBUb255IEx1Y2sgPHRvbnkubHVja0BpbnRlbC5jb20+DQo+ID4g RGF0ZTogVHVlLCAyMCBBcHIgMjAyMSAxNjo0MjowMSArMDkwMA0KPiA+IFN1YmplY3Q6IFtQQVRD SCAxLzNdIG1tL21lbW9yeS1mYWlsdXJlOiBVc2UgYSBtdXRleCB0byBhdm9pZCBtZW1vcnlfZmFp bHVyZSgpDQo+ID4gIHJhY2VzDQo+ID4gDQo+ID4gVGhlcmUgY2FuIGJlIHJhY2VzIHdoZW4gbXVs dGlwbGUgQ1BVcyBjb25zdW1lIHBvaXNvbiBmcm9tIHRoZSBzYW1lDQo+ID4gcGFnZS4gVGhlIGZp cnN0IGludG8gbWVtb3J5X2ZhaWx1cmUoKSBhdG9taWNhbGx5IHNldHMgdGhlIEhXUG9pc29uDQo+ ID4gcGFnZSBmbGFnIGFuZCBiZWdpbnMgaHVudGluZyBmb3IgdGFza3MgdGhhdCBtYXAgdGhpcyBw YWdlLiBFdmVudHVhbGx5DQo+ID4gaXQgaW52YWxpZGF0ZXMgdGhvc2UgbWFwcGluZ3MgYW5kIG1h eSBzZW5kIGEgU0lHQlVTIHRvIHRoZSBhZmZlY3RlZA0KPiA+IHRhc2tzLg0KPiA+IA0KPiA+IEJ1 dCB3aGlsZSBhbGwgdGhhdCB3b3JrIGlzIGdvaW5nIG9uLCBvdGhlciBDUFVzIHNlZSBhICJzdWNj ZXNzIg0KPiA+IHJldHVybiBjb2RlIGZyb20gbWVtb3J5X2ZhaWx1cmUoKSBhbmQgc28gdGhleSBi ZWxpZXZlIHRoZSBlcnJvcg0KPiA+IGhhcyBiZWVuIGhhbmRsZWQgYW5kIGNvbnRpbnVlIGV4ZWN1 dGluZy4NCj4gPiANCj4gPiBGaXggYnkgd3JhcHBpbmcgbW9zdCBvZiB0aGUgaW50ZXJuYWwgcGFy dHMgb2YgbWVtb3J5X2ZhaWx1cmUoKSBpbg0KPiA+IGEgbXV0ZXguDQo+ID4gDQo+ID4gQWxvbmcg d2l0aCBpbnRyb2R1Y2luZyBhbiBhZGRpdGlvbmFsIGdvdG8gbGFiZWwsIHRoaXMgcGF0Y2ggYWxz bw0KPiANCj4gLi4uIGF2b2lkIGhhdmluZyAiVGhpcyBwYXRjaCIgb3IgIlRoaXMgY29tbWl0IiBp biB0aGUgY29tbWl0IG1lc3NhZ2UuDQo+IEl0IGlzIHRhdXRvbG9naWNhbGx5IHVzZWxlc3MuIEFs c28sIHlvdSBkb24ndCBoYXZlIHRvIGV4cGxhaW4gd2hhdCB0aGUNCj4gcGF0Y2ggZG9lcyAtIHRo YXQncyB2aXNpYmxlIGhvcGVmdWxseS4gOi0pDQoNCk9LLCBJJ2xsIGRyb3AgdGhpcyBwYXJhZ3Jh cGggZnJvbSBuZXh0IHZlcnNpb24uDQoNClRoYW5rcywNCk5hb3lhIEhvcmlndWNoaQ==