From patchwork Fri May 21 17:48:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liam R. Howlett" X-Patchwork-Id: 12273521 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=-17.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,PDS_BAD_THREAD_QP_64,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 E6832C47076 for ; Fri, 21 May 2021 17:48:39 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 90227613D1 for ; Fri, 21 May 2021 17:48:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90227613D1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 57CC4940036; Fri, 21 May 2021 13:48:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 55067940033; Fri, 21 May 2021 13:48:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 32EBF940036; Fri, 21 May 2021 13:48:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0169.hostedemail.com [216.40.44.169]) by kanga.kvack.org (Postfix) with ESMTP id E3D9D940033 for ; Fri, 21 May 2021 13:48:12 -0400 (EDT) Received: from smtpin33.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 895A618062A04 for ; Fri, 21 May 2021 17:48:12 +0000 (UTC) X-FDA: 78165972024.33.D9442A5 Received: from aserp2120.oracle.com (aserp2120.oracle.com [141.146.126.78]) by imf14.hostedemail.com (Postfix) with ESMTP id CD0E7C0042E3 for ; Fri, 21 May 2021 17:48:08 +0000 (UTC) Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 14LHTBi0143041; Fri, 21 May 2021 17:48:11 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=corp-2020-01-29; bh=m09LocX5eROSMWE59fjg6KL4G37cEzpcTqB/O0Ov7ZA=; b=CJaYZlr0k1lXVa7B+wRmy7kn7+RgO61xxzDaY3PG76yCXGqvfFYasKGDG5pJPtYs2WAI hEQAJtJGQUcz6rN/qCjXJHLB/48+3qBPmWljH+vn5BHIdxjPuHrp3vxU5LE+lBOcveez GZX/A4QcnOksJOv/eCwgk/s+MkmyIz7b0kw6lf4kLmIQqwGuCe5XiJBZ/2tBNkKlKo4O ieQiI0u4ptxwS7636ugT8MAlkYOmzPAY5enIepnEBy4FYtrOtcwjWuH9xbWhQcLNgIlW xWtcNBeAeGd7QvVroPXfuOu/I2HAf/w9t7R2A0rrmFEQqerGtsKj/peeuHCSB4gqz0ng AA== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by aserp2120.oracle.com with ESMTP id 38j68mratw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 21 May 2021 17:48:11 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 14LHkYWN095609; Fri, 21 May 2021 17:48:10 GMT Received: from nam02-sn1-obe.outbound.protection.outlook.com (mail-sn1anam02lp2045.outbound.protection.outlook.com [104.47.57.45]) by userp3030.oracle.com with ESMTP id 38megnskas-5 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 21 May 2021 17:48:10 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=g+4t3+v+aOGNMS1g1l2BELLmHI6hzcVGXfSK/C30zUI0tDiSOIS24yQKvdLY1vSqqMRE7aFCyJwY4voq+vJ4uYWs4SKTFQ3Pdc+ur9f7utYZWkeliOOMshv/1u99qo1F+NfE/mYvNtVsoyL5AKD/YooG/hCO8Ac0c0xqc3rnhgHSsK5tbkVwkGBfNsA2xv79XxLn0W6vR787EjnjEvcBtFoyBlAeib6C61ABQZ+pAu/+MgDW9A10xvZyFAiUn4ldBQH+fQXJMXqsx6bYLUg6iuD4ZUoVN79X6Guz6itA6RWB1qd7Vc9o6CcFmo2EypRMOTw11WeQUZ+FBKTytjdrCg== 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=m09LocX5eROSMWE59fjg6KL4G37cEzpcTqB/O0Ov7ZA=; b=bZdD0fHzLmh7pWDDq048s6OD6nOXGsFo4Lww/FqenL9Oq3gDbxhXp1mTw9Bb80OjyzycSjSwKsqVlt4KEwEIecDEva8McoeXaDcnQo2BqtAYJpBDAHGFQkbrQ64mtkUMM209nAXGNUQAf5dLw8f+5hTOixoy8sqf4uHT2u4U7hGQZjVel9siDV0Mvflyz9PAldOxJ3me3IgbJZCFfbLE+GRP9AKe3P/HMioSRlFMGeEspJIIyNWtZJzNJPQ73l/QsM4gTPrKdhQIfL9x624hPYtqex+CfD+ARCbd72WHLc2txlZMqiw1lPwvPJxALdZx/0A0emPL0Q7UU3w41Oldng== 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=m09LocX5eROSMWE59fjg6KL4G37cEzpcTqB/O0Ov7ZA=; b=WJMa9ALnSkpMpb/xCHYGcVmIWgl/M5/LPnnMf3MqfK3RsvOTkGpVv/tMwUnVx2ksrFAl3Uc3/HILk/+CJe6h1u4mu8tuZXF6uxiqdO/KROVNL1PRGUh34SMpWsm3R8CvxJBh2r1tCR50Zdg+r0kx5M6PVPTLICi/ButFdZmm6O0= Received: from MWHPR10MB1582.namprd10.prod.outlook.com (2603:10b6:300:22::8) by CO1PR10MB4467.namprd10.prod.outlook.com (2603:10b6:303:90::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4150.23; Fri, 21 May 2021 17:48:06 +0000 Received: from MWHPR10MB1582.namprd10.prod.outlook.com ([fe80::353a:1802:6e91:1811]) by MWHPR10MB1582.namprd10.prod.outlook.com ([fe80::353a:1802:6e91:1811%8]) with mapi id 15.20.4150.023; Fri, 21 May 2021 17:48:06 +0000 From: Liam Howlett To: Andrew Morton , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" CC: Geert Uytterhoeven , Laurent Dufour , Davidlohr Bueso , Liam Howlett Subject: [PATCH v2 19/22] mm/migrate: Use vma_lookup() in do_pages_stat_array() Thread-Topic: [PATCH v2 19/22] mm/migrate: Use vma_lookup() in do_pages_stat_array() Thread-Index: AQHXTml0ybh4yJfewk60mVu1YxZe0g== Date: Fri, 21 May 2021 17:48:06 +0000 Message-ID: <20210521174745.2219620-20-Liam.Howlett@Oracle.com> References: <20210521174745.2219620-1-Liam.Howlett@Oracle.com> In-Reply-To: <20210521174745.2219620-1-Liam.Howlett@Oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.30.2 x-originating-ip: [23.233.25.87] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c4c361e5-4cba-40dd-74b9-08d91c809747 x-ms-traffictypediagnostic: CO1PR10MB4467: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4714; 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:MWHPR10MB1582.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(346002)(376002)(396003)(366004)(39860400002)(136003)(6512007)(26005)(44832011)(71200400001)(107886003)(76116006)(91956017)(122000001)(86362001)(8936002)(66446008)(66556008)(6486002)(64756008)(2616005)(5660300002)(8676002)(36756003)(186003)(4326008)(66476007)(66946007)(478600001)(1076003)(54906003)(2906002)(110136005)(38100700002)(4744005)(316002)(83380400001)(6506007);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata: =?iso-8859-1?q?IBW3R7WH170yoEuSXb8ns8WhY?= =?iso-8859-1?q?nCOlxpwto9e22yDpZ2DKRNohJ3db7DjMP/9/GAxJP+yET0ju2Rw64PF3+azC?= =?iso-8859-1?q?zwHpwRyOypqDyCtJKaTXPUcxkQWaBPTf7tPeFIDKNX8cITbeFr/xiOnur6q1?= =?iso-8859-1?q?ed7Gl0hRn8luN0QRLvsfKcs/bwN3hMq643AMqAYDc+gA+mdy7sngN35LkSe+?= =?iso-8859-1?q?kAFggnvmKvsZWCRmMVnXV6NoNC5JqFz1XAMttssnt7zluCd+iBKmpeOO3uGn?= =?iso-8859-1?q?vI/h7Uo4TjCW0uSaQy7CmE2z5OEHRsS2t6oJXUBVu+BFfBLtaDAIsXSQjsgi?= =?iso-8859-1?q?395bXGMtp2tbPAaRyMNHqlOaW5+l7PmnMyqR4byw4C2F2vauhocaZJbAFb2r?= =?iso-8859-1?q?U04INpq3qXkaANxfBZRbmRdA+AJbtxo8/FzSl6/LF/W20lkd5bc2jqJFt+yk?= =?iso-8859-1?q?zFfpVRL2fjcePyUuJQDh9+arPDk096K/iByqL8Fy4q/U8tg666uqEFINynLA?= =?iso-8859-1?q?rAqplEUCOVThcNw2XZtyyB38wi4Zr9Sq2Cqel8kb2KevKVeHt12hna+lAGl5?= =?iso-8859-1?q?1f5CMpjzyaHF1Ecd0PimJs7oltooexwGg+kiYb2srNw74UMaFNaGIs/jbPRi?= =?iso-8859-1?q?Y0Hayc7qfgww/Q2YhJ8bvxB4ymM5ZQWRHo3rTvn9k1GRPln2Wx1Tfllub+5f?= =?iso-8859-1?q?t2YHYNL1Jq+1miRqBH9D8q1ksp0G0c/3yBhCUYPBhNP0Y3PYf2SbHZHJT48+?= =?iso-8859-1?q?N8FnlZmy5FwNyukNEfUBpnqcCutF2A44lS1tJ10IY3KINFtP53AMZ/WyhjVO?= =?iso-8859-1?q?5bO+FUItYu/SB7x6rZopoVm+e9Lo/hZJefRJCdPtEYbLk5a6pZac9xZJvz2j?= =?iso-8859-1?q?NnqFZuABDTqpULO4v3jZo1vi7etevW3ttsqgt8FH2xz9FtEMlpTLwvv8GJtS?= =?iso-8859-1?q?VKW+xBTULCYOeCQnXbodiofpki5KxGn0FRTrvzsDRphzzcZf6ypawQzK1VM+?= =?iso-8859-1?q?pgRGngwhT1uGrLIJWgLbAjHHtud8gz9UcaJgP3u7WSdSqCGnsWplDUywcuT0?= =?iso-8859-1?q?5cxAX3sLVkp1qLhOgsJQLY6hdsRcsqnLRLMkuD1GPbW8ggYKJftYrgcAjExe?= =?iso-8859-1?q?Nk/I0PFNEZoXO8O3rEcmtO4AEI4AOfFTWHW6WrGg2op9zP64YTdCYKBrkQPR?= =?iso-8859-1?q?q43LO4mxeTfVeN69XrPd9INcjRKpS/TqEcuLZ/6ABGSiOtarRB18FqUObxf7?= =?iso-8859-1?q?E9Do2NKphPU45bRkIjpR5KPxgxVUkjy8TP3C4GkPbRR9asbOk7ZcCittJVO3?= =?iso-8859-1?q?/zhOloG0JgNntAVtkCQ6txP9WqY0sFh/1UIjuNQCEDhEd6C5iIhW20RrScC?= MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MWHPR10MB1582.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: c4c361e5-4cba-40dd-74b9-08d91c809747 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 May 2021 17:48:06.7330 (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: 9boHlTBApGzzj8ib98qRC9WCu9PJZQVyZ2IxdjI6zSLSrM3f9eQRSKhp70/81grrSBmsRVdPfd0FdKbkPjx97Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR10MB4467 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9991 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 phishscore=0 adultscore=0 malwarescore=0 bulkscore=0 mlxscore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105210093 X-Proofpoint-ORIG-GUID: p5n5tgLK1L1xzhrp-v_iEkSQxKCLcVBH X-Proofpoint-GUID: p5n5tgLK1L1xzhrp-v_iEkSQxKCLcVBH X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9991 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 mlxlogscore=999 priorityscore=1501 impostorscore=0 suspectscore=0 clxscore=1015 adultscore=0 bulkscore=0 phishscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105210092 X-Rspamd-Queue-Id: CD0E7C0042E3 Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2020-01-29 header.b=CJaYZlr0; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=WJMa9ALn; dmarc=pass (policy=none) header.from=oracle.com; spf=none (imf14.hostedemail.com: domain of liam.howlett@oracle.com has no SPF policy when checking 141.146.126.78) smtp.mailfrom=liam.howlett@oracle.com X-Rspamd-Server: rspam03 X-Stat-Signature: 8hnkkbz556x1pao96ipn114h7pt31ct6 X-HE-Tag: 1621619288-742687 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: Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Signed-off-by: Liam R. Howlett Reviewed-by: Laurent Dufour Acked-by: David Hildenbrand Acked-by: Davidlohr Bueso --- mm/migrate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index b234c3f3acb7..611781c0f9b5 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1833,8 +1833,8 @@ static void do_pages_stat_array(struct mm_struct *mm, unsigned long nr_pages, struct page *page; int err = -EFAULT; - vma = find_vma(mm, addr); - if (!vma || addr < vma->vm_start) + vma = vma_lookup(mm, addr); + if (!vma) goto set_status; /* FOLL_DUMP to ignore special (like zero) pages */