Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp4172294pxj; Tue, 25 May 2021 01:55:03 -0700 (PDT) X-Google-Smtp-Source: ABdhPJykcziAJWL8YzHqXlf+r1ttq0CGv+f/xKiYfzIiItZIfAoYnfrwYWVkPgD3E5foFaPgs+0F X-Received: by 2002:a05:6e02:1c42:: with SMTP id d2mr20046141ilg.286.1621932903542; Tue, 25 May 2021 01:55:03 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1621932903; cv=pass; d=google.com; s=arc-20160816; b=tsVKM3YUaQK78xdjEBCfKWt0YdflY21Boh8B1LMN1cu4qkMPWGUHiOlaCXsahvd5pq aYMcW78MHg58c7cZXgMs8nUQ4IKPXsIbo02ck7p7vpfvjbWIhiZt7dkhlnmn52xmOF7B Tg8nmHlEz2HQLDVbkOIaQlTltnH7e9GalQXnGfPvZgkkYJ2qdDNgamjJaMiscsVpeNVP HdDL8QD0XN+uBGnZdOp2pv3thNGY/Vogx2LXBnILQFF2de1v2pfTdAwBKLaYbv5bZ3sj I/3BsAjQ/JB2iyqCHS5BYWGKRgrvJXJJfopAcXjgCXZ4XhMPWJE0vIjkESEGav0zUQQ3 SyPg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:content-transfer-encoding :content-id:content-language:accept-language:in-reply-to:references :message-id:date:thread-index:thread-topic:subject:cc:to:from :dkim-signature; bh=Pigyx2DoKbSMx26IPRGfSIt7AgCiWXadjiKmYn+ikAM=; b=W4ELv0pzCJA/kUZrpxBaBgANHG9Ee13Jr5LEdgzX8xbabPjxNgUY0W/vfczC2y+X3s GqNroj9RArBnpMiHIJQOseAjC3PZttBpxdlHfkhh664rpsA6wW0VPpsc4iRjtbpR7wb6 gBJhaCPXwLic358Dj6UbRQVqoikz44bGbu+gpakz2XJMCIdQbLMDQaOOnU+JeuL3KOcn 6MvwCJSotdwwdacwpENr55PaFcoiozRQwZTZHs6zBI/MXqTAqcut93KaLelsGvZi21LE qw/cld6qs8aEkCz7+T5mKkSnVla0AxUIltDJvN1GZCluNNkOBS+7EjwdsGvgBr3KV+gr p5SQ== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@nec.com header.s=selector1 header.b=lJr5M6y2; arc=pass (i=1 spf=pass spfdomain=nec.com dkim=pass dkdomain=nec.com dmarc=pass fromdomain=nec.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id v12si5109107iom.38.2021.05.25.01.54.50; Tue, 25 May 2021 01:55:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@nec.com header.s=selector1 header.b=lJr5M6y2; arc=pass (i=1 spf=pass spfdomain=nec.com dkim=pass dkdomain=nec.com dmarc=pass fromdomain=nec.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231363AbhEYIeE (ORCPT + 99 others); Tue, 25 May 2021 04:34:04 -0400 Received: from mail-eopbgr1400084.outbound.protection.outlook.com ([40.107.140.84]:16427 "EHLO JPN01-TY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231365AbhEYIeC (ORCPT ); Tue, 25 May 2021 04:34:02 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hKDcq27z3pNxoMOPNjZscQGojJjKCFB63VDg4pPKCqTSFBBmGcievzwMgqcncN+yZhircUfIbsh1VGzR1lBVESeIomQjD7CY/e+5ngbv72/1JtbqgPxmc186V8VPTSm9QJFEjlARPbFo2wuHBAuEwO6xoBKcKgat1lkvmQvQ9H/uXOoYgNrWlbv0ibQBLmNTnWHdMaeHrAxK9eD22MKBK5M+QOVSpQy2zcybonElxLkBhwx5uNbeSrwhiR3Vi98E1mHNhtEHJ9cxZTojbGPBQqgNAzQpH7+VLIw/cE1pHkZ6cn+sVg6KemCtzFR2heBmELbu/l/XBCrPChmbDqaBOg== 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=Pigyx2DoKbSMx26IPRGfSIt7AgCiWXadjiKmYn+ikAM=; b=ZIKfJ5fZOsAlxPqN69k6CkLx+3Ia6QEF41IKt02aed9vsGRrOqkW1sWOR2fju2jkqriQmDABD6DYPNYV9/QdAjIoNc/hTaD0QPkv7fxWTpcs+XduC4iOZ66pTz0e9sTkT7FZ2THvNMrGFhuWYHVwsYa8lJ2m8oyzVJAliNQENp3BBVXVqYrAdXRxc1fmytCqDXJUo7fx4r4Cqkn6hFF4W6ocD91D7COFLD9MPVgOjKeinSoUScHFMEeKoWqgXNN8CUpRn1RyYlINeQzrTtH6fm8vzncspZDfEFbNc4VkPT7fYN929JB0Jcxw3f5MRN7e6G/zymIKvBv/HNgzhPp48Q== 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=Pigyx2DoKbSMx26IPRGfSIt7AgCiWXadjiKmYn+ikAM=; b=lJr5M6y2iKE1JK1tOGExe6hF8oEL0JC5vuYcD7lo0GlZnEL/CJTQbdES0eYReRSiKTXfQy7JirOkoBqeaz3Oiroce76dwPN10VvEhN3PNTcDCQRKer2pukxrobeE+75cZ2vJ5S7MxV/IRMPB6Pt/X/CyTgLVb8vNKDthzJkIEMI= Received: from TY1PR01MB1852.jpnprd01.prod.outlook.com (2603:1096:403:8::12) by TYYPR01MB7055.jpnprd01.prod.outlook.com (2603:1096:400:db::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4150.23; Tue, 25 May 2021 08:32:29 +0000 Received: from TY1PR01MB1852.jpnprd01.prod.outlook.com ([fe80::751b:afbb:95df:b563]) by TY1PR01MB1852.jpnprd01.prod.outlook.com ([fe80::751b:afbb:95df:b563%5]) with mapi id 15.20.4150.027; Tue, 25 May 2021 08:32:28 +0000 From: =?utf-8?B?SE9SSUdVQ0hJIE5BT1lBKOWggOWPo+OAgOebtOS5nyk=?= To: Ding Hui CC: "david@redhat.com" , "osalvador@suse.de" , "akpm@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" Subject: Re: [PATCH v2] mm/page_alloc: fix counting of free pages after take off from buddy Thread-Topic: [PATCH v2] mm/page_alloc: fix counting of free pages after take off from buddy Thread-Index: AQHXQ74qL5MFfER7lUaoGADjzS21U6rz+YEA Date: Tue, 25 May 2021 08:32:28 +0000 Message-ID: <20210525083228.GA3327407@hori.linux.bs1.fc.nec.co.jp> References: <8cd355d2-1adc-4189-7b65-cfea13129db5@sangfor.com.cn> <20210508035533.23222-1-dinghui@sangfor.com.cn> In-Reply-To: <20210508035533.23222-1-dinghui@sangfor.com.cn> Accept-Language: ja-JP, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: sangfor.com.cn; dkim=none (message not signed) header.d=none;sangfor.com.cn; 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: 6e4de251-5f16-4bd9-c9d8-08d91f57a1fb x-ms-traffictypediagnostic: TYYPR01MB7055: 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)(346002)(376002)(396003)(39860400002)(136003)(366004)(122000001)(71200400001)(86362001)(186003)(6916009)(6506007)(6486002)(55236004)(316002)(33656002)(478600001)(66946007)(64756008)(38100700002)(54906003)(66446008)(26005)(9686003)(76116006)(66556008)(66476007)(83380400001)(85182001)(8936002)(8676002)(6512007)(5660300002)(1076003)(4326008)(2906002);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata: =?utf-8?B?MkYvd0FVR3RqV2FkaDR5a1l5WkJZZnMybnpUVm0yTFdla0pxbXRQQ3Fxb1Z6?= =?utf-8?B?b2xVZWRackZpcFNzOVNsWXlYNmNHTkg3NnRPVE5nVWVRR01acnRVWVJWTzgr?= =?utf-8?B?TWpJMGdLWFV2cEQvVG12UWVGUi9oajN3Y3k2OFB4MHFsd001MXdNUFUvSm1y?= =?utf-8?B?TVZUVXQrS0tRemNtQkw0aUVOeUszbGkzZmk3N29Ja3kyTWJ2cWdCVzcyRUVu?= =?utf-8?B?K1UzQWROUlFWMlBNREtuNFBmL0g2SzNMdTZPRVp5YlplZURmREJCMEgyRDVs?= =?utf-8?B?RWwzYmpKOFJqejdBL2M5YmRldWgvYTZBUksvb213M2h3UHdka1Q4UnBrRXkr?= =?utf-8?B?U2FtZis4UkFJaHpHVXB4Q2dpcVZod3c0bmRDN3ZtZnJMQlVjeFBaRERJRkxo?= =?utf-8?B?ZjNvQ3NOeHc4aWFmREZqc05iSHN1Rm5Sa1pWS1BPVDRwVXc5dFRIcmUxeHRS?= =?utf-8?B?cGhhTFNoaUthTlBadFZYaS9PejFYbjhUUlphalZibFptMWtEZ3QrcmtHRENU?= =?utf-8?B?czZZMVJtcUp5QkZDaHV6UFdEMTczZW5zTnRJN0pySGdiR2g3cXhNTEdxSmUz?= =?utf-8?B?aEVUZ3VZd3ZSbGdJTkNoc012ODVTM0gwNlNpL0xRMFMvbmdtUDlYSnJ1dUNz?= =?utf-8?B?dDZ5SFFVS0t4cVByVGh0TmJTK01wTVllcGJCR2Z0WjlwRVV4eUlka2VOL1JN?= =?utf-8?B?UCtYUHJVV1NTak9lNnR4REtWVWQyL1pLUmhmM2tybGtGTGlWeEJLaTRIenE1?= =?utf-8?B?NzE1Yis1VXV3UGxZakNHMDFBRENpSlpJcnd3bE5RQ21scFNXK09iQ3lYLzgr?= =?utf-8?B?MDlPWVdvS3Z3aTBsVUQxMjVaRXZkbWVLViswdDQwWFkwQmY0aUlYQjZnWnV2?= =?utf-8?B?UlRXOXRHbURxWm16YVd6N0FqRCtzS1VvMVNnTGEyTVQxUytFSmtweU9ZSkdy?= =?utf-8?B?T3VzaUF6NnJJTnh6VXBacXN4cThRdzFONW1zSndpNUpUZ1dBcDkzOVRIaUo3?= =?utf-8?B?cXVqTW5xbDREbVpoTzJxVExyRnpGMm5HczA0Q2lKRmczUWdHZ3NlMlMzcnU2?= =?utf-8?B?Z2JOV0RxeTBuY0pIZzllTllKd0xRUzF3L20yMUpmUXZtcDF0M0VQaStPL2d5?= =?utf-8?B?QjZjSVZhUDNwYm0wRUM5WTh4K1pRWks1dEhjak9tUXNwczJhVy9oZUc2YnU3?= =?utf-8?B?Rm9VL3IxTE5sOFQ5a2N4UFdLdDIyeUtJejdGdHlIbDIwbDRUVHVlQWZEK2ph?= =?utf-8?B?eVBxNU1ZcFBlMFVQaHNlT3VnNE5JUHpsbnVpdkg0cWo1WkdFN3VoZ3krcm5u?= =?utf-8?B?YU5XRXpyc2Y0S0NDOTR6QUZybHErZVViMXhZcE5udE8wRXBDdUh6SldWVjZ4?= =?utf-8?B?eWdzUGFwZzdTRXNFS2dyNGhncU15S0pYdTdGdFZEYzB4bThQb0JuRGdyMklj?= =?utf-8?B?aHlLTVhGeTVETGU1SElLaFMwRytWeC95bUQyN2FmUm9kWVExdWd2My8zVTBB?= =?utf-8?B?bzhjU0dSSG4vdFhvZVgwVGVUc1I2UVpMVVlVS0FUNzh2dWdtWnlXalJwSHhD?= =?utf-8?B?SEVjeFVjeVRVSmRiZjZUK3pMOU1vaVBHSU82Wk9pZjVPUUV3b1JZTEE4dldr?= =?utf-8?B?cnY2bEk1d284S29MYlF2SEZkc0VvR3c0amcwUEtTYjl6UE1jSEFON0ZtNDgz?= =?utf-8?B?bXovL015aWU3aGJNU0xodlZtYkFwb0NLbnlkTk1WRmFudDdGV1RrUkZ0Y1hR?= =?utf-8?Q?Fos8z09XAlMRN41/jDxkFuUrEgS9gCmzsaJYJ/w?= Content-Type: text/plain; charset="utf-8" Content-ID: <0210AAB5204832418C5CAB19DD1B5E6D@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: 6e4de251-5f16-4bd9-c9d8-08d91f57a1fb X-MS-Exchange-CrossTenant-originalarrivaltime: 25 May 2021 08:32:28.9085 (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: QIr6D/e1k27ktt0Qn7kl+wSHhvExKamaqjAj50c/zioy+CR/urur1opQTOq/em6dMzvB6aPFLkozvCJdFi4IpQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYYPR01MB7055 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gU2F0LCBNYXkgMDgsIDIwMjEgYXQgMTE6NTU6MzNBTSArMDgwMCwgRGluZyBIdWkgd3JvdGU6 DQo+IFJlY2VudGx5IHdlIGZvdW5kIHRoZXJlIGlzIGEgbG90IE1lbUZyZWUgbGVmdCBpbiAvcHJv Yy9tZW1pbmZvIGFmdGVyDQo+IGRvIGEgbG90IG9mIHBhZ2VzIHNvZnQgb2ZmbGluZS4NCj4gDQo+ IEkgdGhpbmsgaXQncyBpbmNvcnJlY3Qgc2luY2UgTlJfRlJFRV9QQUdFUyBzaG91bGQgbm90IGNv bnRhaW4gSFdQb2lzb24gcGFnZXMuDQo+IEZvciBvZmZsaW5lIGZyZWUgcGFnZXMsIGFmdGVyIGEg c3VjY2Vzc2Z1bCBjYWxsIHRha2VfcGFnZV9vZmZfYnVkZHkoKSwgdGhlDQo+IHBhZ2UgaXMgbm8g bG9uZ2VyIGJlbG9uZyB0byBidWRkeSBhbGxvY2F0b3IsIGFuZCB3aWxsIG5vdCBiZSB1c2VkIGFu eSBtb3JlLA0KPiBidXQgd2UgbWlzc2VkIGFjY291bnRpbmcgTlJfRlJFRV9QQUdFUyBpbiB0aGlz IHNpdHVhdGlvbi4NCj4gDQo+IERvIHVwZGF0ZSBsaWtlIHJtcXVldWUoKSBkb2VzLg0KPiANCj4g U2lnbmVkLW9mZi1ieTogRGluZyBIdWkgPGRpbmdodWlAc2FuZ2Zvci5jb20uY24+DQo+IC0tLQ0K PiBWMjoNCj4gdXNlIF9fbW9kX3pvbmVfZnJlZXBhZ2Vfc3RhdGUgaW5zdGVhZCBvZiBfX21vZF96 b25lX3BhZ2Vfc3RhdGUNCj4gDQo+ICBtbS9wYWdlX2FsbG9jLmMgfCAxICsNCj4gIDEgZmlsZSBj aGFuZ2VkLCAxIGluc2VydGlvbigrKQ0KPiANCj4gZGlmZiAtLWdpdCBhL21tL3BhZ2VfYWxsb2Mu YyBiL21tL3BhZ2VfYWxsb2MuYw0KPiBpbmRleCBjZmM3Mjg3Mzk2MWQuLmUxMjRhNjE1MzAzYiAx MDA2NDQNCj4gLS0tIGEvbW0vcGFnZV9hbGxvYy5jDQo+ICsrKyBiL21tL3BhZ2VfYWxsb2MuYw0K PiBAQCAtODk0Nyw2ICs4OTQ3LDcgQEAgYm9vbCB0YWtlX3BhZ2Vfb2ZmX2J1ZGR5KHN0cnVjdCBw YWdlICpwYWdlKQ0KPiAgCQkJZGVsX3BhZ2VfZnJvbV9mcmVlX2xpc3QocGFnZV9oZWFkLCB6b25l LCBwYWdlX29yZGVyKTsNCj4gIAkJCWJyZWFrX2Rvd25fYnVkZHlfcGFnZXMoem9uZSwgcGFnZV9o ZWFkLCBwYWdlLCAwLA0KPiAgCQkJCQkJcGFnZV9vcmRlciwgbWlncmF0ZXR5cGUpOw0KPiArCQkJ X19tb2Rfem9uZV9mcmVlcGFnZV9zdGF0ZSh6b25lLCAtMSwgbWlncmF0ZXR5cGUpOw0KDQpQYWdl IG9mZmxpbmUgY29kZSAoc2VlIHNldF9taWdyYXRldHlwZV9pc29sYXRlKCkpIHNlZW1zIHRvIGhh bmRsZQ0KTlJfRlJFRV9QQUdFUyBjb3VudGVyIGluIGl0cyBvd24gd2F5LCBzbyBJIHRoaW5rIHRo YXQgaXQncyBtb3JlIGNvcnJlY3QgdG8NCmNhbGwgX19tb2Rfem9uZV9mcmVlcGFnZV9zdGF0ZSgp IG9ubHkgd2hlbiBpc19taWdyYXRlX2lzb2xhdGUobWlncmF0ZXR5cGUpKQ0KaXMgZmFsc2UuDQoN Ck90aGVyd2lzZSwgdGhlIHBhdGNoIGxvb2tzIGdvb2QgdG8gbWUuDQoNClRoYW5rcywNCk5hb3lh IEhvcmlndWNoaQ0KDQo+ICAJCQlyZXQgPSB0cnVlOw0KPiAgCQkJYnJlYWs7DQo+ICAJCX0NCj4g LS0gDQo+IDIuMTcuMQ0KPiA=