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 CABDAC83F01 for ; Wed, 30 Aug 2023 17:54:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 43FA328005F; Wed, 30 Aug 2023 13:54:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3EFC7440161; Wed, 30 Aug 2023 13:54:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 269D4280060; Wed, 30 Aug 2023 13:54:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 16A2028005F for ; Wed, 30 Aug 2023 13:54:14 -0400 (EDT) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id E77BB140337 for ; Wed, 30 Aug 2023 17:54:13 +0000 (UTC) X-FDA: 81181519986.11.44871A6 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by imf26.hostedemail.com (Postfix) with ESMTP id 7E8FC140002 for ; Wed, 30 Aug 2023 17:54:10 +0000 (UTC) Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-03-30 header.b=cedplXK5; dkim=fail ("body hash did not verify") header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=HNfcsXRn; spf=pass (imf26.hostedemail.com: domain of mike.kravetz@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=mike.kravetz@oracle.com; dmarc=pass (policy=none) header.from=oracle.com; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1693418050; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=D0LrdN0tChad4xAkcBWuKXpX+t1Gj2l95BU4G6GaT7I=; b=1pr+DK5mlTNT+1hOsyBfEATpPpNGKPiv0b/mWCKYljKp8eTpHe2kSQPq1UoGzB3ksUKWEU X24DUaOgbzDLcR2PrN77OuQ5Ojsc9bcnBSV30SG3lbiTX92N40KS1EIHOaFe4/sGnFzcIu s/PWh20i3PoptXXPDPTI+zzHvjU/Qx8= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1693418050; a=rsa-sha256; cv=fail; b=55DkMefHh/fBR1nHvapJ0J0s7i6nboX3EuNJf2gBwIFRMjIwMI3aBM2LqzSgu7qPo0bwLw d8jS+1wcnnEp94zLnm2Bsmz7s9vL0uP+d7pGdANTyPKRuJTCWE9nJHR3Ya+woRUjRWuyHk eaiU0sx+ucwmYBPkkfGyXm2CSzmB6X4= ARC-Authentication-Results: i=2; imf26.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-03-30 header.b=cedplXK5; dkim=fail ("body hash did not verify") header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=HNfcsXRn; spf=pass (imf26.hostedemail.com: domain of mike.kravetz@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=mike.kravetz@oracle.com; dmarc=pass (policy=none) header.from=oracle.com; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}") Received: from pps.filterd (m0246631.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37UH038D000381; Wed, 30 Aug 2023 17:53:31 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : content-type : content-transfer-encoding : in-reply-to : mime-version; s=corp-2023-03-30; bh=D0LrdN0tChad4xAkcBWuKXpX+t1Gj2l95BU4G6GaT7I=; b=cedplXK5OWKyKIbkaNZfG4X/d40cJiDfRIcXKod3/CqLtRoE8ahT4T1pOylH/3uI2DNf XDqo3OrJH0fHSS9ivcT0rDJn7D0X/1Bth+ACHeeTRBLaYcZLSDHuVS4TOimwcppSrG/0 Hwc9YupfLkXHUwMwWRNcBR5wHE0EqW7eFKfS6p0Q4H4nMTwmqPDfjzRF2NpWLK0OSGKx GTMVg+TST3II7XJ2P3pOPozk5a2wTTAHOkQj3/OpxcP66QYBPgnb+byXe69l7OE56mH0 yQ26ddOhJQRp2W/KRIiBDeENwixnqvRSBSuhor10hepLYWkG5H1Bj+4ZK1CE9W/ItkZO jw== Received: from phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta02.appoci.oracle.com [147.154.114.232]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3sq9gcqxt8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 30 Aug 2023 17:53:30 +0000 Received: from pps.filterd (phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 37UGlcRR024320; Wed, 30 Aug 2023 17:53:29 GMT Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2175.outbound.protection.outlook.com [104.47.57.175]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3sr6dpv52f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 30 Aug 2023 17:53:29 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=endTbrwCQf9kjmRSSLnkNisZwak9Nhq6WPt9rA31CBebd2JwQG5EETTYs53ErcmD6oUfBqAgu/XGBqDoEEm51j+11CJBpoAi05oNgD0T7sc4/PmjYhUVyRwjILlCCyo1/OZRKBH5shQgZSt+buWKqWkSk0axj9VAAcVvV1dLkDmqgB/fmFbDbiEzkhe8rHIqsAuVpX5iyxwSFJJM6uVRGNro0i8TnhlHgFYyIIY+xRSEZmJC5RAgFBWad891mjohhfmbLmIaFR0Aw4xx5BtlUuVRgZndNZ2torIVTW/RJTtgoz6umn68Zs8tF8kKpSLEKPqHwAnwfq1CrjvHmrismg== 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=UpOHnHZlOSeYnMZ3m8jL3k0CsQgCfjUIil7u29Hl/O4=; b=XZvUOCT8gs9otZNpoqAkWUtmUfl5H9W/LOwQxpd6SPEUD1L46yaPgDyMJ764/qF4zeetHuU48crwvm4YW4502f0PR2A1FgzUXP/dkaHMsnYEFiiZ6FHonZ24kGgTcg1sra5zlvDRTmA3Gtso86DxXgZh0BQSfa6Ve9DT1i/PpirgnNkyQUA2s+w6FH0t2gyPYxKB/nDxucnx3KWXUX0XLZjUazYIfS8hI40SQsP/Xc643Y7VYcpMCWK+g7EyZ51Z+NsZG4PWULLcF+4QleUoLxirIi5VfH2AVoJGXZuS25ST8MlAtrgdSNW3430Oz2547xBF+G9uHDIAsSZqCUkrwA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=UpOHnHZlOSeYnMZ3m8jL3k0CsQgCfjUIil7u29Hl/O4=; b=HNfcsXRn8kZC1PFm+A+PfOqbY2s4d8mCVQQJ8pYmSYJVS5ahJqSo9Duius79pkAeXDqwJuIvglNWJOkurI4ru7HevXojWEI9rPFLYwx4r9CXdXUtlUbuxcazBmI8nR2ikUUNeEjQSFmv9B6qjzYWihw3Y3SUEqbHAcGBfUJ4uWw= Received: from BY5PR10MB4196.namprd10.prod.outlook.com (2603:10b6:a03:20d::23) by CYYPR10MB7571.namprd10.prod.outlook.com (2603:10b6:930:cb::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6699.35; Wed, 30 Aug 2023 17:53:27 +0000 Received: from BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::58d8:cf97:ae4b:1715]) by BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::58d8:cf97:ae4b:1715%3]) with mapi id 15.20.6745.020; Wed, 30 Aug 2023 17:53:27 +0000 Date: Wed, 30 Aug 2023 10:53:23 -0700 From: Mike Kravetz To: Muchun Song Cc: Muchun Song , Joao Martins , Oscar Salvador , David Hildenbrand , Miaohe Lin , David Rientjes , Anshuman Khandual , Naoya Horiguchi , Barry Song , Michal Hocko , Matthew Wilcox , Xiongchun Duan , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 07/12] hugetlb: perform vmemmap restoration on a list of pages Message-ID: <20230830175323.GA55006@monkey> References: <20230825190436.55045-1-mike.kravetz@oracle.com> <20230825190436.55045-8-mike.kravetz@oracle.com> Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-ClientProxiedBy: MW4P222CA0023.NAMP222.PROD.OUTLOOK.COM (2603:10b6:303:114::28) To BY5PR10MB4196.namprd10.prod.outlook.com (2603:10b6:a03:20d::23) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR10MB4196:EE_|CYYPR10MB7571:EE_ X-MS-Office365-Filtering-Correlation-Id: 01dd6383-26fc-4f1e-81b2-08dba982032d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 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:BY5PR10MB4196.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(7916004)(136003)(39860400002)(376002)(346002)(366004)(396003)(186009)(1800799009)(451199024)(6512007)(33656002)(9686003)(53546011)(44832011)(6486002)(6506007)(316002)(5660300002)(1076003)(26005)(41300700001)(33716001)(6916009)(66946007)(54906003)(66556008)(66476007)(38100700002)(6666004)(4326008)(8936002)(8676002)(478600001)(83380400001)(86362001)(2906002)(7416002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?iso-8859-1?Q?dv9EOYgD6YfOhEbYHWIXSkQ32FbdB92CPfIg8H2v+ltQb/NUKdlQtHAHUl?= =?iso-8859-1?Q?fLigTYv2TvoxX7D7hNrFkCZfzgtI1ZOwO94DhH1Dm5Tseha/uZCTVDp54c?= =?iso-8859-1?Q?whaPprcJ8jXvDzcVHFAPVv+UmUNxd3Z+KPlZMkdnXJmhthfuU8hr5GS+fs?= =?iso-8859-1?Q?7IPDMdzczCNWXf1LyLpI8adDMakHr5aeQTENzYU8c4mSrsJ8gROBau1luM?= =?iso-8859-1?Q?0iySxDZw1PIGtbyXcmsXUAjYJmkFpcg3nzMs2+5i9bCuj3wKTHTOtgl84x?= =?iso-8859-1?Q?5N7anufnq0iS/0pPV5K28Hq04BSe2Qq0kIx8b8ZfSbwPitYSSYcE6Za1gy?= =?iso-8859-1?Q?CTtMA/hfFdVJmJS0sF9ZhO9tmkM2tQvxZqiqlV705atv8iMT0e3qSSJwyx?= =?iso-8859-1?Q?x6CGZ2vKrhKtE/NEhWkVe9Tvs0mhT3ykmsVSkkeFmUXGr6A2HUuMAjaoyL?= =?iso-8859-1?Q?BDzxze6g8mN6er4aT5f3JjMhNggsOBdGrhpGPOayDnswxvZ6TEmP+mUmIp?= =?iso-8859-1?Q?apLAdLhtkqFCIVZGPK5cbNYgEfhrIf4SBgEdabNtLq+t/Y5rygbyNjb0Og?= =?iso-8859-1?Q?1jdmvxM6cIxc5vQUvERGm6SoumQ90zNhIJZ4B8HsK4vO+yAY7dxdM1H4dg?= =?iso-8859-1?Q?LpWOSzZj9fT6Ka6BxccWIVzhLL7XxmqVpstIwDxaBtPt2ljjCyWS5U8JcX?= =?iso-8859-1?Q?FmcipsTaZzT+DCH9LTJrIVzG7tQJPaJhc+dQWhn4y1C07UyC0d4eRzzowE?= =?iso-8859-1?Q?edT+9M1NPFI6mhMQi6J12gjDLdwfiXROiIj53InGTl/bEqRA/NW8DEc80D?= =?iso-8859-1?Q?XbSJ+1lLj501Vcf+eEvWxGG/SuNJqBI4+J5PG402o4ifbRNP7Ieoxm7wgT?= =?iso-8859-1?Q?P5GhJZBePu9hmYhy6SktmAKa+bQHdZ9os2p3RBLy+seKQfSVirT1thpTzH?= =?iso-8859-1?Q?aCbuDDebzK1eFYzJBQ1eSkABNWcRXP13R5CODz5efFQCwmOUR5oHtbHeY6?= =?iso-8859-1?Q?lABFW72AQHIafNJXcPc9LObGa/xUsNeT174pbhDcPN7TxNty24Xb5HUTI2?= =?iso-8859-1?Q?TOwWjRKYehB4yneGUuNYXkvKbyD32iGJYXGPsMHuQiykX+wO8PUCHLlLbP?= =?iso-8859-1?Q?gWdUhUyUUwVEOC9JfK4zvUy/6Iny5WzOHzoUjHWY7jLFGbYgn8eKo7J9Mi?= =?iso-8859-1?Q?+9atjlDukbrziMOtouUDrbpm5GBTxAumynWK7swoo+NVz1e7LZF46XzGxk?= =?iso-8859-1?Q?oLc0Nsm2HhhFXtz4qH4S6YlaNJ9YzUFQcaBVc4+UNEf4ub+/V9GTWE52AW?= =?iso-8859-1?Q?9rvOhaNBZ3Cj/kOgVdKIVYA3venp31sKQ/3uFys/u0aTKpe4jbpQ9wRPWy?= =?iso-8859-1?Q?ZwaHJY9bM+Qgih6ZzZRyXM5KPQnp5fUV/EqmuX0fjTU/v+/iUiiUrKG9KS?= =?iso-8859-1?Q?W0AstZfTbqUpSky7hJa0rWDmZKNydNQcDyNiItoR5Zq9Ja3uqSMcDbtf7I?= =?iso-8859-1?Q?NWG7BflL9/Ai2r4IqY6KA2RATx9HvOF6982NQIVyzxqKGyLLG+tVTUQ/se?= =?iso-8859-1?Q?9yl8kV/43BCc9vextXq6pTOE8nBo2o1HF5jJXrds1OA22HAP69on9rKlsr?= =?iso-8859-1?Q?IfbJRFWhHz0bDLX4pOvWbLf/drjjV3PHJR?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?iso-8859-1?Q?WCiyYF1s9mCFh2yW0WyrTq21KrLcGECZ1Vb8j8WomU2hNoMARBDM2rwbLw?= =?iso-8859-1?Q?TKJHVCmZP/mDBEXDnE5TN1C/u6WMeC1bJMushici+VJntuIThZ4NSMBQNE?= =?iso-8859-1?Q?m9n3yJh24qEj04UBw3IevcNt6O4KGcm1OSVjiXfvjJj6qjJnm3Jd4uNs9B?= =?iso-8859-1?Q?RM079GUcxsjY3g5ZNnt6HrnaxzXVntWNt+9YTRqLrazi6/efBATzsCNXuv?= =?iso-8859-1?Q?IIxKbnYaUFtJ4o7PEgHf3QFa1eZUoWEqGIGF3M5YCx+NU1t78the5VefHg?= =?iso-8859-1?Q?NUw07oZSkt5Jkc5odwEVYwDpL2UP1J9r50tQY+yJ/PF7R6BEVKJZzeTClu?= =?iso-8859-1?Q?VGt5WJ38LfUwNQXSBE4CAOfdMZlCQCfAZdsq6G+V9OXL/QNMSpw3ltYbMb?= =?iso-8859-1?Q?jg7NxAP2twOOITxxSzLCykDBlFF5Q+NzJtlFpYmUCdTCMOyN+9zIaI6PIw?= =?iso-8859-1?Q?BtGZ/Nhfn0cIq2WRFEMoFNYjw9yraNhwz8gN0bsm4dsL9Ii0b3slWXGuoz?= =?iso-8859-1?Q?5/57IpNEAaWSoqq/fL4V+LNKks+Sv/Q5uiwon6ytG+zs2ibX4jHNXpjI2G?= =?iso-8859-1?Q?vQZoFGbmBSiT1iXmf4OLFKo6FnfAIwRJdnyLjbTvYj1UiYWdjD/YMPB2Eo?= =?iso-8859-1?Q?gIH7tssVOilLY7Zc/Gy3rGZJPMXanqnOgTSV9l2iazIQX+ZM/cRir+CtmG?= =?iso-8859-1?Q?EujYSdRW3ZKhZkNSfLC3cNeaCqf+rCJ5BrJuu1U+CLBaWP5V8Fxh6/oeGw?= =?iso-8859-1?Q?eSQcHHRT1eDKWMK4452Qe8ab/fKfBCH7tnlkTTS/yjUcyzk7rkkkwlPSRb?= =?iso-8859-1?Q?MF9kYgobk/TYdQt32PB/zGZ+t7b6vqIdwtHGMqRWsunqFryfQFiMBvLHJ6?= =?iso-8859-1?Q?6MPn4uBPgsnOsrMaCis1T5KDQMErGts56QsZjq9+DmF/dVAXZsDrC2xnnh?= =?iso-8859-1?Q?J+0tbtMgsyF99aqLv2UekQKaitUhBbLJ/BQmdIX5uDnp2y34vyt1qA48fa?= =?iso-8859-1?Q?RNnFrbxJbVdO/VoojS2fni8H7FDa36SUcXLHYR8fu0kUk//07Jfv/zoxIe?= =?iso-8859-1?Q?TGJIqVsnZef9JQydqL2qMTtrHBYZ6qmc+7CrDMv637vREoP1T0fjJ5mwJQ?= =?iso-8859-1?Q?NNrdZuuWoAToKc2SKQyp0ijjTQE6HuRCmPTTbwqpf9xU3kmUxO?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 01dd6383-26fc-4f1e-81b2-08dba982032d X-MS-Exchange-CrossTenant-AuthSource: BY5PR10MB4196.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Aug 2023 17:53:26.9663 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 5BinTlgT3g2shHB0Ekqu13BEsM3F/5WFEPQKjpqt4ms4dOg2Y3XLpMrjnvQ05mHS2i+3yeSuyrKjoAAE2R4g6w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CYYPR10MB7571 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-30_15,2023-08-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 spamscore=0 adultscore=0 suspectscore=0 mlxlogscore=999 bulkscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308300165 X-Proofpoint-ORIG-GUID: YpgwyuBck6T5MY2CQWbS-FgO7EekzMos X-Proofpoint-GUID: YpgwyuBck6T5MY2CQWbS-FgO7EekzMos X-Rspamd-Queue-Id: 7E8FC140002 X-Rspam-User: X-Stat-Signature: tac1rw17a3atxgi4zbmt9yozomtgyaqw X-Rspamd-Server: rspam03 X-HE-Tag: 1693418050-430876 X-HE-Meta: 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 XVdmlpzm 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 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 08/30/23 16:33, Muchun Song wrote: > > > On 2023/8/26 03:04, Mike Kravetz wrote: > > When removing hugetlb pages from the pool, we first create a list > > of removed pages and then free those pages back to low level allocators. > > Part of the 'freeing process' is to restore vmemmap for all base pages > > if necessary. Pass this list of pages to a new routine > > hugetlb_vmemmap_restore_folios() so that vmemmap restoration can be > > performed in bulk. > > > > Signed-off-by: Mike Kravetz > > --- > > mm/hugetlb.c | 3 +++ > > mm/hugetlb_vmemmap.c | 8 ++++++++ > > mm/hugetlb_vmemmap.h | 6 ++++++ > > 3 files changed, 17 insertions(+) > > > > diff --git a/mm/hugetlb.c b/mm/hugetlb.c > > index 3133dbd89696..1bde5e234d5c 100644 > > --- a/mm/hugetlb.c > > +++ b/mm/hugetlb.c > > @@ -1833,6 +1833,9 @@ static void update_and_free_pages_bulk(struct hstate *h, struct list_head *list) > > { > > struct folio *folio, *t_folio; > > + /* First restore vmemmap for all pages on list. */ > > + hugetlb_vmemmap_restore_folios(h, list); > > + > > list_for_each_entry_safe(folio, t_folio, list, lru) { > > update_and_free_hugetlb_folio(h, folio, false); > > cond_resched(); > > diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c > > index 147018a504a6..d5e6b6c76dce 100644 > > --- a/mm/hugetlb_vmemmap.c > > +++ b/mm/hugetlb_vmemmap.c > > @@ -479,6 +479,14 @@ int hugetlb_vmemmap_restore(const struct hstate *h, struct page *head) > > return ret; > > } > > Because it is a void function, I'd like to add a comment here like: > >     This function only tries to restore a list of folios' vmemmap pages and >     does not guarantee that the restoration will succeed after it returns. Will do. Thanks! -- Mike Kravetz