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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id B51CCC2BBCA for ; Wed, 26 Jun 2024 03:06:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 130856B0085; Tue, 25 Jun 2024 23:06:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0DF086B0089; Tue, 25 Jun 2024 23:06:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E99E36B008A; Tue, 25 Jun 2024 23:06:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id CB6E46B0085 for ; Tue, 25 Jun 2024 23:06:34 -0400 (EDT) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 62FCEA264C for ; Wed, 26 Jun 2024 03:06:34 +0000 (UTC) X-FDA: 82271551908.12.C475697 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1nam02on2046.outbound.protection.outlook.com [40.107.96.46]) by imf02.hostedemail.com (Postfix) with ESMTP id 8BD9A80014 for ; Wed, 26 Jun 2024 03:06:31 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=ZZtwYt12; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf02.hostedemail.com: domain of ziy@nvidia.com designates 40.107.96.46 as permitted sender) smtp.mailfrom=ziy@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1719371176; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=0+4IYZlkeXl9toBrOKmc+F8Ua4qecJwfGAK2IuM0npQ=; b=h4CSR0d/L28vWvsn6mnQDHAjya9n+NZIh7BYiLQCVIUUCm7r2KY+od195VMn0vvN1Wjgj9 toU+swP2mDYMbjPJBDIa3GNvqo1SxTvykzRVCUGwQulsHyI4kQN5V+gI1ec1BnNOIkGNGN tdo5AdHaRMwET//Vq1bSUpbich5hWBc= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1719371176; a=rsa-sha256; cv=pass; b=DtbzzUBUJDBXIkcZciOiIzFf3jQ9ebRi/hYTeAJ/hSM/YKYSgiV/EWB80rQSfADIGP21Nm jNrRR0A2ThAnfcQdbSBGfHgxnke2I+ieE3+eTCiLTxRxrpraJdQqNSkc8VuwdTsTZivOJn yH4gQue00LiCUL5GCD7i784H1tn1Xak= ARC-Authentication-Results: i=2; imf02.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=ZZtwYt12; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf02.hostedemail.com: domain of ziy@nvidia.com designates 40.107.96.46 as permitted sender) smtp.mailfrom=ziy@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=V0G/dPoudccftF1m4Li0gI7c0VgPiN/k/rWp7gdmjaIN4vUqp+rFXKoEjNAYIJK5sEr1CeBIlXDFIU0te2K/pD0Ej7pjety/BY3rHfU1ZF7N0ZS6oX9bwi3urdEDizmve4WJm/iquirfAJ31s1tttIvYnMJnxodjA+nvE9VUAqJMK6C52aZhVSBOOT0LStnqi4HRRwXjRE2Sl79lrvhjHUTC+g1tP1Nqc+QsheuheT3qWoeyfPoAn6cLQuYYId0s9xkmsmeoFU14yMNph30pXjy1wzCfqjGSxQgg8xadPiaU/vfIiAAymOoZYwUhw5g5ECOJEUD8uTRJx9Mdnypa3w== 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-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=0+4IYZlkeXl9toBrOKmc+F8Ua4qecJwfGAK2IuM0npQ=; b=HvtAYyYPhn0HJO4IQb894kPndSQVvgQ1XQFab2nGPFfKwcWI00nOuTn/ZL6aHHJ80xnbBfFJTJIDMXiEuYJbjtWeX2ErCEgEqnrr1yYDWytEZI2/ZX236zK1MMh1UILJwdy1RZL5srDrzg+nFC6Ll9ZDIjn12L5Z5MvoCkqpfIEjzbaMXBp2V5+9nAIjEV812c/4NS7ppQTJ6Qq28gy8a2ICqmmzlHhdcdnQ567s+TfyiVQ8Zsrq5/4heBAEoIxK/ifmcqMSVjUEh5bE65rRKnvQosJecUoeXnW7TW2F1J3SPMO1W5XQAeN92tL/izaUZ6igobxUnqlSBS2vfgmHnw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=0+4IYZlkeXl9toBrOKmc+F8Ua4qecJwfGAK2IuM0npQ=; b=ZZtwYt12Pobvyu2hbdMQq+ms+OZFjhRdn2XDBajF+cx9ZAIoiACNenPosLn0C39SEWywBFi6C1ga+h/rP3xCM399oQgnwQATnJOm6exliar1/d0uZYVeML5PfOWuypYZPfsc0YqlgzKfYDsQkWXju2GEe4nBPYj4gRVQWV3yaFEuhCT5gMQ73b9MZfvjGBKjKMY9GYDMu1zrTPMpCHtpBc/+zCKGmEosEaWrg9W40sG43U4eTodqBvO81h2GbrK08DKx60GTBkqyRwcpYYJYbFcmB0ReNlNNgIN9EVXtq+QS9K8RnMSslAM4jiHPIXb2zPLBe9azGY193uTrZhOS2Q== Received: from DS7PR12MB5744.namprd12.prod.outlook.com (2603:10b6:8:73::18) by MW6PR12MB8950.namprd12.prod.outlook.com (2603:10b6:303:24a::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7698.30; Wed, 26 Jun 2024 03:06:27 +0000 Received: from DS7PR12MB5744.namprd12.prod.outlook.com ([fe80::f018:13a9:e165:6b7e]) by DS7PR12MB5744.namprd12.prod.outlook.com ([fe80::f018:13a9:e165:6b7e%4]) with mapi id 15.20.7698.025; Wed, 26 Jun 2024 03:06:27 +0000 Content-Type: multipart/signed; boundary=160d1fe3209212974da81d836de7ddfd79b4a6816f2f2b1065ec16097dbe; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Tue, 25 Jun 2024 23:06:25 -0400 Message-Id: Subject: Re: [PATCH 2/2] kpageflags: fix wrong KPF_THP on non-pmd-mappable compound pages Cc: , , , , , , , , To: "ran xiaokai" , , From: "Zi Yan" X-Mailer: aerc 0.17.0 References: <20240626024924.1155558-1-ranxiaokai627@163.com> <20240626024924.1155558-3-ranxiaokai627@163.com> In-Reply-To: <20240626024924.1155558-3-ranxiaokai627@163.com> X-ClientProxiedBy: MN2PR15CA0027.namprd15.prod.outlook.com (2603:10b6:208:1b4::40) To DS7PR12MB5744.namprd12.prod.outlook.com (2603:10b6:8:73::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS7PR12MB5744:EE_|MW6PR12MB8950:EE_ X-MS-Office365-Filtering-Correlation-Id: 4e979874-ca47-4f88-ac6e-08dc958cf861 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230038|1800799022|366014|7416012|376012; X-Microsoft-Antispam-Message-Info: =?utf-8?B?aU1vVHJCOUc3Qnd6S3kreWRXa0lvR082Nmc0a3cxSk9GTk9ReTNBRVVQbXpC?= =?utf-8?B?dzZSNmE5UVZibmFaNWIvN0pVcWw4NVlZckF6TVZZZFVtM0NWQkorMG8xbFBN?= =?utf-8?B?TExHYWF3cUhZOVBXQlRJVThVdkZxTERydU5qdzl2eituaGltOC92cEhmbGxF?= =?utf-8?B?SmlYTlliUjdVdHdxajRQMVVacnJvNG03eFhnTUVocUl3QVNiYmg0eElpaFdZ?= =?utf-8?B?Wm1MRUU0NC9qa3dSaWRQN2JFbkpEV3pEQ2gxWXkzTlVaOEViZWFuTW9mUjNp?= =?utf-8?B?d1VQbHJERW8xOUF3Z3piTXFKaHkzci9XZlpoMnBHQUdwdWtyb1EyL0o4czRj?= =?utf-8?B?VTRQT1lWU0laWS9lU01SdXlydFEybWNQNW9Kd3RoR3pISDdlVlFFdzFlQm10?= =?utf-8?B?MVFPRStIODBTSi9TV1lkREg4MllsUUFHZlVjV0QzS2s1eitsR2lUakxySGh0?= =?utf-8?B?TU9FeGtoWGY2bGpwd05QNU1aai84Q1E2UWxKaEVLOEFhVlFPQkt2WXZLdTlN?= =?utf-8?B?MlFQM0JjWGMxM2cxSTI5YjF6dVhPRGc0VmRkaEVxaWhad1ZXeURxeUZ3OEJ0?= =?utf-8?B?ZG1seGh4cGxhWkdob3I4MHBvdmlpZk5HRk40K2twWnJkMjFiMmxvU0M1QkZu?= =?utf-8?B?UmVMM2F2dU0vUjROcTc4ODQ2WGxZblo1eS9hbmlueWgyNTNaelpqemVYcGVQ?= =?utf-8?B?aXJQR1RidmZUS1dOMEZwR2wrSFp3RHdlRHpxeGFmVDRlcnpnQ0ZUNis0bGlV?= =?utf-8?B?V1QxdTBZNnhFUnFPcjdVcWIxUXVYU0xrMFJycXI3V0xBcmtRZDl5bmtCWTZn?= =?utf-8?B?VWFpVWo0L0xSMlVHQjByTEd1WkxNcDRzVE9VVVlHbncyMFpWQzlsZHMrMWpk?= =?utf-8?B?Ri8wZU5VN2FtMzNRVkhDYVQ1V29nd1dtcTd1RDVMS3ZucXMyaU02RGl4Sy9Z?= =?utf-8?B?Nk5vSEZuNHZCMVhMMmpydWZoU0RJSllEWWptMTlQT2VmUklHS3R3ZGhvZGpE?= =?utf-8?B?dHRZM2N2NWpKcGMrb2g5OFltck1vdTJieUNHWHYwWCtPZWFoUHJkeCtBUU1Q?= =?utf-8?B?RGphcEhHN1BSNXAvWm5KdTlWZVFVbEZpYXhhUURaWWVxTE5vS0pZMFd0WHdK?= =?utf-8?B?WjE4QzhYTEQycks2cldsSVFHbGs0d3RxSmh0MHFwd3B3c1JtbSt0ZGd4S01q?= =?utf-8?B?Y0wzZnJEOGFCZ05rSmMwV2tkVUxZR28zTS9wak5MRlQzOWJJWUlmVkxBVjEy?= =?utf-8?B?Y0RhbWMySDFFOWxRWHVxVWZxSFlVWVdtS3hHcmhRejNub2w3aktES1hEbzdO?= =?utf-8?B?QXBKTktwazYxTExkZHd1L2c4UzF0LytoNTVmdXorb3RJQmxqVmtWYWtsZjhC?= =?utf-8?B?NnBwRTNvSmpWYm5qTE80VEdocWlQWTgwVWtpb0tTMVFiZjRla0RZdFM2YUtY?= =?utf-8?B?YkczOUpRaEFmRUUxdnFtNEhZVTBYMElsOW80ZGJBdXFSSkE4S21GQTNGTFFD?= =?utf-8?B?c3RDK2pVWklGNXBtZFptdmN2VEtnZnRnblA1VDBpNFYvMWdRbjAvUTdsbWpT?= =?utf-8?B?bVdxYTkzWGhVcVpJQ1gzTDYzTXJLelByaXFXVlRGSXJYTWhOSS8vcVdkR2xN?= =?utf-8?B?Q2pQSWZLTmVhNWY4U3F2Tzl6UkFwdlRRK3h3YTd0SXArVkVaZ1BVT2tEM01a?= =?utf-8?B?YW1xN3c4ZnEzMUpoQUZlazFFemw4c2twRTdTVWpGa21kTXk0TVMzeTkrUGRP?= =?utf-8?Q?pF+/2oyE6zc3VanL/T7Jbt3yN6NMGOPP07VX8Xe?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DS7PR12MB5744.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230038)(1800799022)(366014)(7416012)(376012);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?cVRBWEhxU2MxMkNsQnRMa2QyMVFEdzRMY1ZETmVzaHYwK1FjSjdNeWpRRWp3?= =?utf-8?B?MjVJazNlaFdUNDEzVDh2ai9pUEFSWjZhaTFVYzdtK1pydXdGMVBmNzJCWmxY?= =?utf-8?B?c3ZOMHhXNUFBeWN4dEFGL21SOGlGTDQzVml5QVNmMFhoY0h3TnM0QTd3WjYw?= =?utf-8?B?RmtJRWhmYXhTbkFnQ0VzcG1lKzV3cGV1Ujh5d2FwZ29RbjZGZDNNRWJ2Mi82?= =?utf-8?B?bFRPd0hpYUZjZ0QyeWNwUUdJSTRtSFlNTkwvUVIrbUdlNHZZOFdtZERvRGl4?= =?utf-8?B?Wjl0cU9WMjMrZ1VnaEJFUlNxWEthZ3lvQ2d5RDk1dFhVeHFWNGhxTjIvZEZ4?= =?utf-8?B?ZTgzeEQyaEJLN0lCVm5YZWVGRHV3U040ZVQ5c25CeWIvaWRGUU9LQTRUSXhH?= =?utf-8?B?NDk2RUJLWFZBMjd3ZG03NThCZDhWSlp5S2dqVlFGT01JUVRHZ2pjOGxFUW1o?= =?utf-8?B?aXdJUk4zcmlLTExQeUJjUmNtYzRBaXRNS1hibTVwd25FQzc4dU5ieGZXZXRV?= =?utf-8?B?YS9UVmc1NitRSktHYkcxZHU5RkNaTUFvWC80WHpDekFtdVNha01zUkgveFBn?= =?utf-8?B?c1g4UmFyOUdTK2E2YWN5ZkptTnUvOWlrS1RQNFpWVUJBeVdqbG9CVUVsMjVB?= =?utf-8?B?UFNlbEhoMFRpclBmTkIvTlpxOUQrMXN1YzBwV3ZLL29xK1BIeFAvMXJDUlBB?= =?utf-8?B?UXZaYzc1WVhDam1hUjhnMkZOdnVvakZiVmJQME5wQk9WNUxsQlZ0T3N4enJ0?= =?utf-8?B?d0hPT0dzZ3VvekFHVDd4QlA1TEs1UmFHRSt6clFmd1FCSkYzMjJIZW9HeW9i?= =?utf-8?B?ejJ3Vzc3UnJ2RUFIcUxkcUgwNzRGcnlYeExLc1JhWnFDSUhWVlhFcFhmTjYr?= =?utf-8?B?R1JoRWIyK29ST2oxUUFMNWhlWkVsUWowUFp1a0h3RlBDaHg5ZGV6RXl4K0pn?= =?utf-8?B?bmZBSFRJbzlKNlE1SEY5OExZbjdiWDZwQ081S2RIbnZveUxpWnhMeEhUTG4y?= =?utf-8?B?UUtpWlN2eFIxSzlBNFl3TmZVTWxKa1NLVzZYNlY3Z3hxdEtoOFdlc2VtTzFi?= =?utf-8?B?cnduMWJrSXplbUNCNlNOYmlsSlhFQlBNWWF0NE15cU9WUFBDc2xZdmNlSGUw?= =?utf-8?B?Y2hqbDVjTVo0NTFoRURRd3hOUFJlQm5BVlgySDhKMHVaa1FyTE9sSGxyaEI1?= =?utf-8?B?RXdkTnN2K0hCZWdmNEoyZm1Lb0JKalRoK1RUaWJYNzk4V3RyL1NjcVFQWVRT?= =?utf-8?B?Y1RJSjV4bWxudHE1bDMyYW9xRk9jRFNZU0hnVkVnNDdkNTFNMWdLTFZRcm15?= =?utf-8?B?VlAxeEN3RDRnNTl3aVpJR3pGT20rbDBvdWkrb2NSbCtZUi9oblBLcmF6Tnpt?= =?utf-8?B?KzZsc3dEWE5zSzltKzNXbnAvNFZEMWs3MnpiR201eC80OThLd3FkRTJkWDZC?= =?utf-8?B?V3YxejMwVHA5c3V3bFVoZTRacnJGajE0MVA0RDQyTWo1ZVBDUEFwRFB4N0dT?= =?utf-8?B?SVRCODJOcDBBVGcxNWc2SXlBbkFuNUdPWmtWN1F2bEZzYXhnYnJOeFV2bnVW?= =?utf-8?B?L1FJTmNIdVpCOVdMUWJjakFhNVdpWkdZeTgzemE0KzY4R3B6azhlRXpZMlJP?= =?utf-8?B?TUJFTjhTUHF1blc0NkxBZ2IyK3R5Q0NsaGQ1UHd5VFZUN3c0anN6QXZJRXI0?= =?utf-8?B?bDhCQzNJWEI3anJVUmc3YjdhSDVYcEl2WWlVL1FwczZ3OWFCMjRQVmxtQXUv?= =?utf-8?B?Q1RpbXVUSXlQcmthOHBIell4Z0RmT1REcUpxa05USS9GYXhwUW8wdlZCaTRj?= =?utf-8?B?dTgxZ2xNTjBOU3NLdzgrZ3dJQ041LzFoRVptdUpDdnJyay9qVlM2Vnd5eWRZ?= =?utf-8?B?VThFd1c1SGFkZm0vOFo2YWllRms3c3BlZVRsU051cmFlUjRMeDVZNVJOaldZ?= =?utf-8?B?b0xRbldtcThwektjVTEwd2wveXlURTFmcStNSTBUOFVSdUNkOHhnaWFiT3Z4?= =?utf-8?B?NWszZXAzYVRQOXd1Z0R2Nm04dDE0S041MTc4YktCOEhQcitlSUtSb3pnVGFE?= =?utf-8?B?dWlJOUp0cUFWMitFVTQrZUF3akwzMHJuUGtCSjVnTVd6YlVKYno2MmltY050?= =?utf-8?Q?f+Ow=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4e979874-ca47-4f88-ac6e-08dc958cf861 X-MS-Exchange-CrossTenant-AuthSource: DS7PR12MB5744.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jun 2024 03:06:27.6038 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 5eFZbUB3ibpzZFz/k3fLInFrK5OTWJ3hJ89HDTlq9fUW1l9YhoMqleqDxAIBk9c0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW6PR12MB8950 X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 8BD9A80014 X-Stat-Signature: mx8j7wayierdwm7pjb1fybs978qykepf X-HE-Tag: 1719371191-242664 X-HE-Meta: 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 jHNCZtEU v+JYHd6TGCB4IMTtvQPmRC6UaJ2Eoa1lqjE1in0uiwKO2ltmVlTT+wk6hBmnRE2+z65hWGzQFKAepHPytycxMcSvPSHd84RLyFycYudOi9X3IRlLn7P0Jt/JgCDbRj+r9447mkop2lBzfRCA7T5Jsy/7zE21wEG3ea25movmYsQwKORQoVEgT594pvxsfutkHu1AV40rSYYntt3dXeoVYWCPCaL/opYbMSQuJPixIwjnjr0PR00epjbmuAf4U36T0rYp/Pe28HbNvuEeHO1MilYTlcZQjnd7xKSX/7jKi+O9KmNkUfSY9Hs2GXircbxtgx7GgV6rSScFQxMNRPHtLCDpd2vsDNf8OAF3+spVGoDRFsN+zPfP9uJbk82fjAd4HBjFHej5yVap4KKloxLXNMlkRDAW55jRgXdUM 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: List-Subscribe: List-Unsubscribe: --160d1fe3209212974da81d836de7ddfd79b4a6816f2f2b1065ec16097dbe Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Tue Jun 25, 2024 at 10:49 PM EDT, ran xiaokai wrote: > From: Ran Xiaokai > > KPF_COMPOUND_HEAD and KPF_COMPOUND_TAIL are set on "common" compound > pages, which means of any order, but KPF_THP should only be set > when the folio is a 2M pmd mappable THP. Since commit 19eaf44954df > ("mm: thp: support allocation of anonymous multi-size THP"), > multiple orders of folios can be allocated and mapped to userspace, > so the folio_test_large() check is not sufficient here, > replace it with folio_test_pmd_mappable() to fix this. > > Also kpageflags is not only for userspace memory but for all valid pfn > pages,including slab pages or drivers used pages, so the PG_lru and > is_anon check are unnecessary here. But THP is userspace memory. slab pages or driver pages cannot be THP. > > Signed-off-by: Ran Xiaokai > --- > fs/proc/page.c | 14 ++++---------- > 1 file changed, 4 insertions(+), 10 deletions(-) > > diff --git a/fs/proc/page.c b/fs/proc/page.c > index 2fb64bdb64eb..3e7b70449c2f 100644 > --- a/fs/proc/page.c > +++ b/fs/proc/page.c > @@ -146,19 +146,13 @@ u64 stable_page_flags(const struct page *page) > u |=3D kpf_copy_bit(k, KPF_COMPOUND_HEAD, PG_head); > else > u |=3D 1 << KPF_COMPOUND_TAIL; > + Unnecessary new line. > if (folio_test_hugetlb(folio)) > u |=3D 1 << KPF_HUGE; > - /* > - * We need to check PageLRU/PageAnon > - * to make sure a given page is a thp, not a non-huge compound page. > - */ > - else if (folio_test_large(folio)) { > - if ((k & (1 << PG_lru)) || is_anon) > - u |=3D 1 << KPF_THP; > - else if (is_huge_zero_folio(folio)) { > + else if (folio_test_pmd_mappable(folio)) { > + u |=3D 1 << KPF_THP; lru and anon check should stay. > + if (is_huge_zero_folio(folio)) > u |=3D 1 << KPF_ZERO_PAGE; > - u |=3D 1 << KPF_THP; > - } > } else if (is_zero_pfn(page_to_pfn(page))) > u |=3D 1 << KPF_ZERO_PAGE; > =20 --=20 Best Regards, Yan, Zi --160d1fe3209212974da81d836de7ddfd79b4a6816f2f2b1065ec16097dbe Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQJDBAABCgAtFiEE6rR4j8RuQ2XmaZol4n+egRQHKFQFAmZ7hbMPHHppeUBudmlk aWEuY29tAAoJEOJ/noEUByhUul4P/iqrNJOmfuigzJKCzAzPrdOo9Kn+F8w0mtip Y2MYTrO8xfC/EMM3Do/186DavEL3lmnm1qyT1DwYcrIFx1Tpx9QrJLdjel37bbbw jb3wlCEA+tRTk4VYs9KyEQsnrPZQouHT6tCFXjExZIXlcVjW8NTRzJboQSISDOXk SkNWFVuerxnklPbfC2q8BwrL2QGU9ZfMrdITYiSQsx2qF5X3WunEiZyfFHcqbfWI sr7ETDdqo/wBmjVnXozdD8SOYamcjjKwc5XHFikwbEDOwaC/J7vROxuWWPwW631K tAHV0RF7Lanxdoovk1vbf6wopubCRsJjA24AsGKuLtsCSTUInhjOMXEK+hO3wL8e mijMJuAONnf+/qtUTIC4FZZqvVwmSLH81v+fb5qtQhaztTNVD9ECRgB9o4BJlaHJ yq9YMnWiWefFQ3FxcFhNhZ56hExFqV4CCG9emCb6cj0eyLM05XWLXAElceenIK3j 4wB1xRp1uKBMMgsqG8Bj0p5p1sJDRu9kCDkVUA52gKfFFomhyGz1bASoI9Dn39IW AbeakLtX5RxDMiOI8uiztxXcxSqbaqtelIiky3i17rh5GLCjqhJWRhh5LW0BHW1X cqnvn4onZ/L+cGCJ1ZuUUuEeSY31tGf8aBghUq5IhXvcZGF9lc8Uzu/XQpSW4iwN nNJ/3hWg =Pkrs -----END PGP SIGNATURE----- --160d1fe3209212974da81d836de7ddfd79b4a6816f2f2b1065ec16097dbe--