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 BF1BEC83F1A for ; Thu, 24 Jul 2025 08:47:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5B16D6B0168; Thu, 24 Jul 2025 04:47:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 588DD6B016A; Thu, 24 Jul 2025 04:47:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4517A6B016B; Thu, 24 Jul 2025 04:47:42 -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 35A226B0168 for ; Thu, 24 Jul 2025 04:47:42 -0400 (EDT) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 0DF891DA1F3 for ; Thu, 24 Jul 2025 08:47:42 +0000 (UTC) X-FDA: 83698529964.02.DC53CE7 Received: from TYDPR03CU002.outbound.protection.outlook.com (mail-japaneastazon11013046.outbound.protection.outlook.com [52.101.127.46]) by imf10.hostedemail.com (Postfix) with ESMTP id 4BCD8C000A for ; Thu, 24 Jul 2025 08:47:38 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=vivo.com header.s=selector2 header.b=MHig1tkN; spf=pass (imf10.hostedemail.com: domain of link@vivo.com designates 52.101.127.46 as permitted sender) smtp.mailfrom=link@vivo.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=quarantine) header.from=vivo.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1753346859; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to: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=J2Dq90EgzDzKGh7Zr8kmf6dOAjvyPb8DO2vog7rCgno=; b=CQ8QKJxwLUYJM5b8YIfgIFs4lU1ir8P1Ietn9bgYAVy9MmgBhN4FzhDJ9yFCJrh4d5uvfy Oketj2p3gQ7ozWaKGuLH3etrbLZFtD0Gnl7iUgWl/7Xnvo/TN05NUvevMgDgDme9aaozXT qwqDduwOWpf4MkVEmdttOfeF+zUORRg= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1753346859; a=rsa-sha256; cv=pass; b=wTku3zBPMs0Px5MBE4iIJSWNTI6xgYuExo7aPmoERpKywczK1yLbCWF4N5lAWtfgwTGlVk 3jiKslBqw69VDwdQBP5nYXmOIMfQssZ89PQVvQb3/1FbZBZQ3l4ATSv7moK4S+Iy6gWCE+ 3l4UH34a5VXxLR9Pa0LqrRv+71m4AK0= ARC-Authentication-Results: i=2; imf10.hostedemail.com; dkim=pass header.d=vivo.com header.s=selector2 header.b=MHig1tkN; spf=pass (imf10.hostedemail.com: domain of link@vivo.com designates 52.101.127.46 as permitted sender) smtp.mailfrom=link@vivo.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=quarantine) header.from=vivo.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=TiOROehli7+/U2bTFBQ5hBEqiGwAuM/qVqo9qTjO1VT6/rz2hUULWLEZXeHEJOm0v4yhlc0NRm6Rtu70Qn1N4u8Q5YOA2Wk+uFCU2Wo76EDnKzCxLIgm2LZHLPIQFRKd5dnpu4j+tg/m2AgOgw8s7gd5qydOcFJ81z9EtGLG5Q01pcg4/lqBM7etLpPGjgek42lFILd/s49uqBgoqjt31rupxkcDa1eTaNNXxUQknlEC2C83mO3RXc+z+90g9qS+dGdyCAAGFE3CMBTxyhhCmj3m+dhh+8mu5i7EFX2Dxmew8wkLPkS6yCDyZBqrbfsMTiFvCvblJg/lNbP+9yVkbg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=J2Dq90EgzDzKGh7Zr8kmf6dOAjvyPb8DO2vog7rCgno=; b=NAliPpJeyaw+JGL74f5VituZ2jgd5kkfxQ1od2fdsENDy3JjoqhTozS+Ubgu516xt8qnNuExu/A1tvDbGWKY6KOQuZesVfAU9r6nCtiTST4gH6mzHTxto3w6vkw8B9e8eoQS4Xsj8+rYimZRPFi5fiQmFiEqKUXAmHWFe+kkCLdQP4yD0AjDnXMsAUfx62EdBfZTpStgg72UW3Fj63MjomlOBoOrej12jIRHB8yOgHgNXnm/jqNZGEG10h/xQrouPDTJiMhXu85Cc+WOckYAWbdUmc8WS8bPfXvLe+LUnsDc0cVaGA9A8aH5pmIlOxWbcG4qjPED8bgKq0PLpkfWRg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=vivo.com; dmarc=pass action=none header.from=vivo.com; dkim=pass header.d=vivo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vivo.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=J2Dq90EgzDzKGh7Zr8kmf6dOAjvyPb8DO2vog7rCgno=; b=MHig1tkNLeXk7AA4MJTTKAfgMwAw2n+KLu4FFLA91nrvS5q8MVAXj0e56UqBS3Z+NeoRqqui/PvYSQ1y1PpeU3ZwOxF9Mulgv2aQ4oksW5ZLqjE0iGQ/ddN9mdhGDJgj+/9KaJIE1Q3HgPCia2E+yaS3ef4Sqmd191F/pPObjxB1q9PfL6PyQGnl76S2eMygOotrOFNKajPgTHR2KgLSYT5hAWd0iw8Rl7beKgpO0b9xuVc1VCsI500VBG1DjuWVzG/iiDjTZVGnC+9TRTMjqir5AmqFafgMNCf4DuYblll3beH+HmAJ3fV3OK9H8XWnXwIQAssqc91KddX9KodgLQ== Received: from PUZPR06MB5676.apcprd06.prod.outlook.com (2603:1096:301:f8::10) by PS1PPF2A261C07C.apcprd06.prod.outlook.com (2603:1096:308::247) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8964.21; Thu, 24 Jul 2025 08:45:46 +0000 Received: from PUZPR06MB5676.apcprd06.prod.outlook.com ([fe80::a00b:f422:ac44:636f]) by PUZPR06MB5676.apcprd06.prod.outlook.com ([fe80::a00b:f422:ac44:636f%4]) with mapi id 15.20.8943.029; Thu, 24 Jul 2025 08:45:46 +0000 From: Huan Yang To: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Rik van Riel , "Liam R. Howlett" , Vlastimil Babka , Harry Yoo , Xu Xin , Chengming Zhou , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Zi Yan , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , "Matthew Wilcox (Oracle)" , Huan Yang , Christian Brauner , Usama Arif , Yu Zhao , Baolin Wang , linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [RFC PATCH 1/9] mm: introduce PAGE_TYPE_SHIFT Date: Thu, 24 Jul 2025 16:44:29 +0800 Message-Id: <20250724084441.380404-2-link@vivo.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250724084441.380404-1-link@vivo.com> References: <20250724084441.380404-1-link@vivo.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: TYWP286CA0006.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:178::16) To PUZPR06MB5676.apcprd06.prod.outlook.com (2603:1096:301:f8::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PUZPR06MB5676:EE_|PS1PPF2A261C07C:EE_ X-MS-Office365-Filtering-Correlation-Id: 4c575e92-59c6-45f1-75c2-08ddca8e7b37 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|7416014|376014|366016|38350700014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?iQhyJZD/LnzlJNoQixYXlsYxdKmyjgI6YuC1Bs4a/rxHuV89MzjrgIPTPTa9?= =?us-ascii?Q?de7DSoVdLMj7xrH1GgaceDQRUzJVapzKews2570vK7sYPk6LZL16vnLdrCj5?= =?us-ascii?Q?Rc49M7nh2+mtJD+1xDTsFxQcJFkMTgWhlzx4jH+ZmLdHIbT6GWjWJ5e2IdbT?= =?us-ascii?Q?5vOybkkER7ziOVMwaG+T0dCnFFiOQTW/97TKxYIEp8U4dflAFzxH1m00SQVm?= =?us-ascii?Q?Zp0QrxeNoxgMyWWUjwomQnEe8uPCMqwZKQfAXcpH7vb3RzN0z/ow1gTrX3tQ?= =?us-ascii?Q?tqbt8KyXAZktc+V9T9kbHf++4ErFKzneP7EmQmNugdqL9plgSmq2P6TRHgN9?= =?us-ascii?Q?/0vbyPhV41Cm5ilUGgVRKVf9c9sMfmlWqeLZm/w/T477gKrMQ9E+k5lqsbPU?= =?us-ascii?Q?c9nmRUr61W0dTV4ydDJlbvIXkCS1VQAmrABDZezrj9z5KBkWnPmx3AsuG8o7?= =?us-ascii?Q?evc3bHwFRLkNg7b/dGPLF8a5Onerd0qeErp8M6PX2Z5tV7m+WzUNuuj4ltF5?= =?us-ascii?Q?yNBfreiS5MJGbreLZKcxASl0kBjLxnDaU1QWaIkHaxG0xdwQnTR8+RdhsD1q?= =?us-ascii?Q?oGwzPcX4CGUZfpYXi4zIgUfHofuku+Z3b+r+qse02KgvYtERSRmM6g0vCwKO?= =?us-ascii?Q?PlvdTZd/5VK6MCVIZ7EVbFBfBHf5bF0PUCaNSbmMw8QYcj3qLCqp2K+MN1qP?= =?us-ascii?Q?tsFm67ydczUW3qXIqEFKxfkcOdRfRFpRfK6q6R5r/ewadzJRjisbtwo7bDbi?= =?us-ascii?Q?bEkkFuvi0Jig0aDPyuYA+RApeinwAFvGaL27M549Ds0SyG1GJZKMG3EKKag8?= =?us-ascii?Q?cjSwcWC+wy5vtmHRba8ohwJEyjpRJ0zTBzC+YLMiM8ZVAxPpXa/zG6d13ewW?= =?us-ascii?Q?ZXeIFfnsqaSuv+lxzcg072DXOlMbaCE206CpeqpisKKnmo0Lwg3cT4+vE9W1?= =?us-ascii?Q?yHeCoqzkB362cNmQ3W8NFUlAS0DPjrqBMA1jdR0dM3dcPnT0ZGikOOWtJeWB?= =?us-ascii?Q?CZ7MMYt3jFm7DXOho3ctjjwS7fS5llE0EaPQM7pKsEczL4fU7xnjz/DhN+Yh?= =?us-ascii?Q?YzRww9mywPvRikPGKEs+bbrp0W3MKId/AEc2kexN2I2tmUQ4Giv0MMIjV9Kr?= =?us-ascii?Q?QqVH86t8v4oV4LcCovF65NRFo8VAg2SktN1CUZbQaLFMj2lm1vUIse9RK5Wk?= =?us-ascii?Q?jIk/U1RFxhyA/i2abE+M5L4946f/piyQkZ2euaeVYHCSkOdOWKWlPsH3HySk?= =?us-ascii?Q?mGNiV5I3+P+uIsdRW9Y8db4KetQTpVYtMVMxrzrbLDkH1HGd5dDLSTRBpz/3?= =?us-ascii?Q?7okyAQK7LxVj5ILqbcjz8fS50V4hFeWY6eFnzGc8AkZu4S7/xUhjmjmljKfa?= =?us-ascii?Q?3hGlI9V7tMLHhQtD07ucXG22hZ9Q46VgxdSwZ4AojNMSyhI024dquzM0axBi?= =?us-ascii?Q?rIX2OFejzAFuDrgHcyLobxIKIyHLHcTyNLkb6ZFz7IaQusDeHbZYCfb+bGGz?= =?us-ascii?Q?oD4OhNbscdy8b/8=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PUZPR06MB5676.apcprd06.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(52116014)(7416014)(376014)(366016)(38350700014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?QBuatK691xoAliKuxKLfDYSv/fL9mprG/d1rHK5wF1FSvFsxT6kei93Ye/14?= =?us-ascii?Q?AKhw/THRUT8EmTr2+5GZvp1wo/TLC2NPm0Lhgcis4bZQ+ajrr4ochsMnUyut?= =?us-ascii?Q?5FoPLdxtSSNajIOG+LwiINYYduKFlwMUYqPX7J8ZnDv+A/Ac4ZRNByN+3mUX?= =?us-ascii?Q?QtccdnlTBNbfZwcDRSjBkvjuAvn+LUPbNITAxaHnTcLX0sIhcgrA1JTVsTsa?= =?us-ascii?Q?2lD8QfXPbwVR9v8APxTbCFvvLnSc9Xv8lJ0U7AbcnlnbMCyKz6nS/3auYPNi?= =?us-ascii?Q?5zmEc1POkdC+8cbN166MjjN8KjGREFPv2rZDNcrSw2ag3g/HJcBhD4JKEQHP?= =?us-ascii?Q?+XujtLty1FjBjIHhFcHT9UAaPBojahyqt3knxcg+BP9jTmBq9pEmQqXa+jgB?= =?us-ascii?Q?sX0ZbTakcCHxptu1BB+cHMJ8IeYPXEquTLb5Pso6JY9DZj6PSfbZtKSua+Pr?= =?us-ascii?Q?Kk7u5YrcF9E9ndv23RUt9aqZPX8gVAW94bPa4gB2HI+0XtdepTfBuk5voaya?= =?us-ascii?Q?MoGtU9Ket208jGnoQxextI47uMJ1lcXMgGmp0oJRFe4KqSoD4uoGjaIkDqGm?= =?us-ascii?Q?2AXMd+Nt+/2Ob3Nnf7+PYR15cWxhuGGPqY6PsrS/c1rrpXLL8+RACfEYpahV?= =?us-ascii?Q?EWoDncP8cLVL2tkWCo6hPE9BGeLNBhIhvVHVAzVW/UdJMEfi3RT5HSM6RoOE?= =?us-ascii?Q?2fmzQLkziYp+qNRc46no77oJFoboItvfKaMJ1W+Co/pkbnfUGtRGbcGxKguC?= =?us-ascii?Q?vRkXeSRLZIXL9WqHf40b+hBGdtREVeXFXe2AMeHlnAi9e0+dFmexkwaBvLiv?= =?us-ascii?Q?erwPqzFYMCbc2LRf94X+8R19UvojYm4kyjhz6c5ctRwgosr8cfoSFEx3BGAb?= =?us-ascii?Q?dySWyLdQ9PQHGze/PEbODT10X6eTKbVbcfvEErTNZfOVS1r5oAsYzT9MNUr4?= =?us-ascii?Q?NVMFeo4DANYfCq1cst7SqO2AEusgXXFi4NZD/KtzNKFXolMvOQ8mh/NfucCD?= =?us-ascii?Q?ZLswXwZbwd0rXVv54YYXD5qVU+l1YXBwRqte7diF+MC75MUCuTcD/7Gtrjc4?= =?us-ascii?Q?MYIl0Z7BR/Oc9mQYWRXjLsPwApNo368nVq1oS0Pzs+exgoo3jn4+Yv3hM7y8?= =?us-ascii?Q?BRXBrCKehDlNBcvQ6RVZTQ/t4dvwhq65I5WWFueZnEtYB98z5uHrfrWTU5so?= =?us-ascii?Q?MfENs3b77uA4anClaFQEpf8dWNtY6mLxr7O6rRrbWpnmyI6to97TuzO79ZLf?= =?us-ascii?Q?TwvGNFQTMLP3E2UQqWMWkq5VQcW5zdNKKjhAJjGQLYqZoKF98THAjsn+sUqB?= =?us-ascii?Q?XZqlkQ9FyYmmUUGVGn1+e6OqaIAUezPx6PPZmO2gIFfYv+K1F07D06hSeLYG?= =?us-ascii?Q?tc90R97gHelu9A3yGPrDeOAyO5PgLCHVfmDLSNBv9fAyHFZH4utQ6xs58lsI?= =?us-ascii?Q?fsjaWNYdTx2wGNG3jkNzitSmqwl5KiM6Hgg3uEvItksIRi1/BBQi5a4886Xw?= =?us-ascii?Q?vdlavj7pjdNT7C9yxfdSYKxir+tFrQtlRdJqVl/dG5Esv8eHAI/N/xlKhXpJ?= =?us-ascii?Q?b9YfnbStTD2sqeaDQwuoONumc1SB1FYWI1sfV5d1?= X-OriginatorOrg: vivo.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4c575e92-59c6-45f1-75c2-08ddca8e7b37 X-MS-Exchange-CrossTenant-AuthSource: PUZPR06MB5676.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2025 08:45:45.9664 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 923e42dc-48d5-4cbe-b582-1a797a6412ed X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Qig340DZ5cq6G+bHwFc+daupBAwtCvjC99RTGZYAHCbfTpbO/MUfAV7iwBNlXOmpttltZH5qJFX9YNUGCA5vdw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PS1PPF2A261C07C X-Rspamd-Queue-Id: 4BCD8C000A X-Rspam-User: X-Rspamd-Server: rspam09 X-Stat-Signature: 6pew1acqhfwrpfrhp3hgm9ym1611wxyi X-HE-Tag: 1753346858-787626 X-HE-Meta: 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 qaJJY3X1 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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: List-Subscribe: List-Unsubscribe: The current shift value for page_type is 24. To avoid hardcode, define a macro called PAGE_TYPE_SHIFT and PAGE_TYPE_MASK. No functional change. Signed-off-by: Huan Yang --- include/linux/page-flags.h | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 4fe5ee67535b..3c7103c2eee4 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -961,9 +961,12 @@ enum pagetype { PGTY_mapcount_underflow = 0xff }; +#define PAGE_TYPE_SHIFT 24 +#define PAGE_TYPE_MASK ((1 << PAGE_TYPE_SHIFT) - 1) + static inline bool page_type_has_type(int page_type) { - return page_type < (PGTY_mapcount_underflow << 24); + return page_type < (PGTY_mapcount_underflow << PAGE_TYPE_SHIFT); } /* This takes a mapcount which is one more than page->_mapcount */ @@ -980,7 +983,8 @@ static inline bool page_has_type(const struct page *page) #define FOLIO_TYPE_OPS(lname, fname) \ static __always_inline bool folio_test_##fname(const struct folio *folio) \ { \ - return data_race(folio->page.page_type >> 24) == PGTY_##lname; \ + return data_race(folio->page.page_type >> PAGE_TYPE_SHIFT) \ + == PGTY_##lname; \ } \ static __always_inline void __folio_set_##fname(struct folio *folio) \ { \ @@ -988,7 +992,8 @@ static __always_inline void __folio_set_##fname(struct folio *folio) \ return; \ VM_BUG_ON_FOLIO(data_race(folio->page.page_type) != UINT_MAX, \ folio); \ - folio->page.page_type = (unsigned int)PGTY_##lname << 24; \ + folio->page.page_type = (unsigned int)PGTY_##lname \ + << PAGE_TYPE_SHIFT; \ } \ static __always_inline void __folio_clear_##fname(struct folio *folio) \ { \ @@ -1002,14 +1007,16 @@ static __always_inline void __folio_clear_##fname(struct folio *folio) \ FOLIO_TYPE_OPS(lname, fname) \ static __always_inline int Page##uname(const struct page *page) \ { \ - return data_race(page->page_type >> 24) == PGTY_##lname; \ + return data_race(page->page_type >> PAGE_TYPE_SHIFT) \ + == PGTY_##lname; \ } \ static __always_inline void __SetPage##uname(struct page *page) \ { \ if (Page##uname(page)) \ return; \ VM_BUG_ON_PAGE(data_race(page->page_type) != UINT_MAX, page); \ - page->page_type = (unsigned int)PGTY_##lname << 24; \ + page->page_type = (unsigned int)PGTY_##lname \ + << PAGE_TYPE_SHIFT; \ } \ static __always_inline void __ClearPage##uname(struct page *page) \ { \ -- 2.34.1