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 B2FDAC2D0CD for ; Mon, 19 May 2025 14:01:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C3DBE6B00A8; Mon, 19 May 2025 10:01:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B9EC36B00C8; Mon, 19 May 2025 10:01:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A19A06B00C9; Mon, 19 May 2025 10:01:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 7B7B76B00A8 for ; Mon, 19 May 2025 10:01:20 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 23492C0608 for ; Mon, 19 May 2025 14:01:20 +0000 (UTC) X-FDA: 83459819520.01.32F03AD Received: from NAM11-CO1-obe.outbound.protection.outlook.com (mail-co1nam11on2066.outbound.protection.outlook.com [40.107.220.66]) by imf19.hostedemail.com (Postfix) with ESMTP id 353261A001C for ; Mon, 19 May 2025 14:01:16 +0000 (UTC) Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=gBQxXNN3; spf=pass (imf19.hostedemail.com: domain of ziy@nvidia.com designates 40.107.220.66 as permitted sender) smtp.mailfrom=ziy@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1747663277; 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=RL42+hD0GFv8MqJhjDA9iqxjOjkpts3XjzaIUvkoE3M=; b=tGCS8g9tPwUrd1WwE0bVvzBvSEGiSLjo6GgfWEclHgFtjHBHmqmPVa56sBbT65mFePPmkr HSAM1uiDsKvtIDap7P3Q0RgsC7YCvbTQVvxqoP3kjsK8wPoU82RKy5d44Ei/FVbWOgJVJi SPo6vFbv2e1TB2S4gAix5D6A+GY2sqQ= ARC-Authentication-Results: i=2; imf19.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=gBQxXNN3; spf=pass (imf19.hostedemail.com: domain of ziy@nvidia.com designates 40.107.220.66 as permitted sender) smtp.mailfrom=ziy@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1747663277; a=rsa-sha256; cv=pass; b=HBb7HZmqkAONWvCf4eTSnOGUHb4Sn1K2ygUv4KsC7GKolobSTUqqMv/xEVr+6+g5GZosEx Aziuy1wKulR/CRrGPICmW3OGaKwlEvLOHOpF+ro22l7fg+mUmeA01w78Z/EBo5wlZmHgcX DXG28V+12G6MdFikeAdbs8yVU4pMi+E= ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Gd8RtFzto2KzFZ5KVdhRPtBC/f5d2SHMMYEqono15Gxw+HINjElL5u84wQ61lNKsP2gzRGQzUsy2XlxAM19EtJ8/ZogNRfP/SbDISZ4yrjsFeHVcZehuVcigHyFcxaAVw4HcMFMhg7g/wLSo0B/cettgb+7Twc59dN3dvVyqePKSgKX8y6TLInOrAOumGDlOg89E8K1gFvRQNv1Co+8JsKv9MlWBblYrJI9H2rMKUjuU75q9J8qp7EL48ik0vmLbe2h4lHq78adGvL6wqRzSxEthCTnxp9MUzpu1CcYDBhPOh71fjrbQQeZ97wYodeex5Sb6FN3jIptzvoh/TtU8PA== 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=RL42+hD0GFv8MqJhjDA9iqxjOjkpts3XjzaIUvkoE3M=; b=y8rdryOY/wNd8vYtzEeEgfYes7LBe+J3fOXFIvVBJtEgundA3bDw50xBFUFOkGGymE+RAUcElE9aDHAVLnGVHsr5YqqrZyGKLtBBDpYXNO1VEdOJejZw02+6vN23nK4006N4dMCyo9hnsHDIpnoo5TPcGNBcVbsawA5wXMco2mJubvZZH/hJeJqWDiSEvsqzNwo56TedMI3QiYT6PRNCIF8FIyBaLUmVeFz7Y5qomLD3OcJwp3B0T01nmcFlkzi+fVFW/6LlxTfuznWsBoQx0J2XgUtagNNC3MnfCOiq30yEvAD93bPcq4hU6NIHYDih0QLIcuQF1Bi/dazr6IHRqA== 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=RL42+hD0GFv8MqJhjDA9iqxjOjkpts3XjzaIUvkoE3M=; b=gBQxXNN3W6d+7N6kqT1lMOGBnBKA3zFBzVrzpbjaaohifQIV1XwO1ujWE4m3PW7P6yYtaVuS8nw3asG0da6agHpnSucxXWtYgEQS9jbHD52ub4YChBbCRnj24Qq90Y03i4cmpfN29o/jWyplujs9zaNQUDbSbT5rr6PUa0OhIaxgRzNKbOTzr2JcpOxhvrRZxXAFk50L2i+Oi4/SEqtup3ubxWgS0JHcanbBF5/jj+8LE8W+YTR+NkDWkaQDhjVlEbqZ2PNfF6UH4HmfJtyEb0NmROqcEVin72X+Z26VbydPR/rybWrYZviFWJkkDdV//j0EbHQ4qwOH5tW5QZVMsw== Received: from DS7PR12MB9473.namprd12.prod.outlook.com (2603:10b6:8:252::5) by MW6PR12MB9017.namprd12.prod.outlook.com (2603:10b6:303:23b::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8746.30; Mon, 19 May 2025 14:01:13 +0000 Received: from DS7PR12MB9473.namprd12.prod.outlook.com ([fe80::5189:ecec:d84a:133a]) by DS7PR12MB9473.namprd12.prod.outlook.com ([fe80::5189:ecec:d84a:133a%5]) with mapi id 15.20.8746.030; Mon, 19 May 2025 14:01:13 +0000 From: Zi Yan To: David Hildenbrand Cc: Oscar Salvador , Johannes Weiner , linux-mm@kvack.org, Andrew Morton , Vlastimil Babka , Baolin Wang , "Kirill A . Shutemov" , Mel Gorman , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Richard Chang , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 0/4] Make MIGRATE_ISOLATE a standalone bit Date: Mon, 19 May 2025 10:01:11 -0400 X-Mailer: MailMate (2.0r6255) Message-ID: <7AC4F1DB-5B90-46EA-AF86-7AA3E19FA34D@nvidia.com> In-Reply-To: <55f41277-f686-455c-a6ac-86c7e952beb0@redhat.com> References: <20250509200111.3372279-1-ziy@nvidia.com> <55f41277-f686-455c-a6ac-86c7e952beb0@redhat.com> Content-Type: text/plain Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BLAPR03CA0162.namprd03.prod.outlook.com (2603:10b6:208:32f::22) To DS7PR12MB9473.namprd12.prod.outlook.com (2603:10b6:8:252::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS7PR12MB9473:EE_|MW6PR12MB9017:EE_ X-MS-Office365-Filtering-Correlation-Id: 7e8826cf-ba7c-4d3e-d916-08dd96dd9d62 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|366016|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?rWrWZ6WDBD5QaU7nmAViQk0tBytpXRJNfOYcxJP1TCxlwuTH+URMJO8UBdMy?= =?us-ascii?Q?PVFi3ZA4kwSUjSjR4PrjYyVizdkL5INbp85Rwkdx6YBRByY0RGuCUsX45Aqb?= =?us-ascii?Q?TzG68RYDAkJ9vR8BSdX/VSa4SQ2kZCy8tou2xwGaGjcYQZnICu2Ksfkl7EdJ?= =?us-ascii?Q?N0hgf5e6gPz9lNkQTYgkr2NgVpiwEQfVgIAywppneplNexez406l7IAJgf+A?= =?us-ascii?Q?xGhhgRAVhpV1o9kdWujbL4tjpOOklRlKbp9/29F83h5Mhm3S4kaoWFOv8LtA?= =?us-ascii?Q?NxpwtPY2x5ecRYl4rrsfnWBO1/JxpQundNLDgEMOiLNMpnqsjvj+j8r1FV2n?= =?us-ascii?Q?yyKWawh1mQSXvs9N6WsrAXRi2L2eMQDc2TKHHxUtTI+Hb2DRt7CZMFLw0yH7?= =?us-ascii?Q?fRJy0IiHOiCYzZ4UpQxnXXI7SAsoZOKLiK6nWJ5vwpnWW4KJjIbmP8VKZ3xm?= =?us-ascii?Q?XRfYIncR3MejpWa/2Yuz1glOIebu35IBsXs6XUfvufXalFz6xtyhY9yoS7Fe?= =?us-ascii?Q?IH0Q3Ebmcl5BRnFEIuCRLg877oG2OskaFVVUSYSn5lHUf2TFkqbN2l3lSu1z?= =?us-ascii?Q?IztDVqxsRV4k/jvdFm0bUTYATPx7yBGK6yZC1i4Zv0KurmOz0Yo+VRrhGL1r?= =?us-ascii?Q?GEmrbVdPWUOkYXK2ULrFmelFt9joRdhE68XACTsttAuQ++oKKJPP+n+ehX2g?= =?us-ascii?Q?nZjwyC1mxabD/eaRstLlHsH/v/a5nX35DmMfl7jPhdsSNe4IzXit6gUSCV0l?= =?us-ascii?Q?p/+eHdCYMV56d58ntwXJC2a9CvCMuimEjidalAtzq1eVhBjnnbEoabP3eF0G?= =?us-ascii?Q?ADkKa2BrFVjJnUT6a1I0SBDCe+kltFlxIn38WljXRdid+k9Op8ieeXfKKVV6?= =?us-ascii?Q?JRS4k8Nvd7J3sZnPj6Wk8QSAXuWs4y8DyYZ5HTtpOmUWRZQ/xa9S2jqVUxYH?= =?us-ascii?Q?03TatxwJOSNVAWZwHPssWvXWXBNLU86LJ5wT56NBKHekwQ/JkwsoCw/zKhF+?= =?us-ascii?Q?4EEE9eJtjkEQIGeVRCByMlyrfZL2YflcTQ/JpBZCH6lW2t0pLG6JdFbRvx8w?= =?us-ascii?Q?bdinkYcmShuFyFOkfAmlAvH7RtR8VjNcQaaw9D4W9NUOyH5uUab0cXVpopjJ?= =?us-ascii?Q?VbmdSGqalfWm8e10O357PHpdvQ7pUnbKVHUFGkHS5KbyKszm0d0vNH+AOgmH?= =?us-ascii?Q?hHISZatNTo6lbu8qTqCmmdgHmNYKBH2zsEbC4ohqw9zqLZflWRPGZCp6fbKL?= =?us-ascii?Q?fC1fYChU/Q01X70zhcvlgly0kv53Td89OI11dmrhPKf8hgZKS0XazjTjrUjP?= =?us-ascii?Q?oy0a9sc5/+CIJMSJZU4UFhYERu0vVcXrrI2/VcT8U/BAK4+FWUvPvpnIG7g/?= =?us-ascii?Q?EBKHDvPSAE5qrLluBbhf50glvjHoZax2nzhqABDvHSMrOZ0pTw=3D=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DS7PR12MB9473.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(366016)(7416014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?WbktD4Do+5JyjbaXuzWHxcGOBdWtvbezSNJeYfkeXx6nxqst8Ir8/i3eW2cz?= =?us-ascii?Q?tlHnCveGBy3q97O2YA+GntJVFk6FLEQ+AfvU11fvNpqZXPfr9san1dkLVAQG?= =?us-ascii?Q?+nrWHDrPfYlsHqulzKWLjDrIoP3XKG4rUkJYntOvdMzB+0eonW+YtqT64rpO?= =?us-ascii?Q?Ewgbai5ggiGUjq5WdzLywvOeP1wSJ5DOMrIl3aa3O+1ih9IDzj63HKYpqplX?= =?us-ascii?Q?LIGKm5CIDRMllAHIFj5YPpYIuj3OF5tNIQ8H0QEa6pus2p6j9pZQ50/m2gr7?= =?us-ascii?Q?B06Tne7sC3iUsHuOLU2s4vMY+Y4hqB+l/VQtnu5DZNWAb7O7hmGM0RrdTNrL?= =?us-ascii?Q?eSEUtuWLT73bhpkLzvdezRYbk6MNL6aVgDWxQ1JaIH4btbPjXW4kJNjSwu4x?= =?us-ascii?Q?CPNrdbHrOYfiek0+tSEde8Ty1SswGnVbPMhl+XdVcE5oXcihYcggdFETBgTp?= =?us-ascii?Q?vwBipil6z+tDLh0nhFx16nrH+kOFIqf3OSzu2LMSjmftF3Vu1/HvqkdoTrSE?= =?us-ascii?Q?carsREtlI/Jm6k2yEIoYioTPTltgmozBU1+gqEdRMzuExmj028dIE50YX01F?= =?us-ascii?Q?uGeRGTnqbNmu/EXyqNg1MPhPKFbCk1zuiqKKupwZ8hTDrDgtQwo3yUXxdEam?= =?us-ascii?Q?QE2dddKJJsNqKNoCKDQGb9R3sKz3a2m+/vZrYbuegsDYMdZesLJsTpDLCHgY?= =?us-ascii?Q?W4NVqvFRkJi7//9B/q8nKY7Tr9O92INqoN2CyN12feHgozITrfLUG7wGuZH/?= =?us-ascii?Q?XTdS5db9Eu3K88dOO1NT5dH8tg3+8QeYZaP59nzvljOLlufc32IR63jqhtC+?= =?us-ascii?Q?++gNQQFy8kjeZABpDmLe+JawqqaqU33Z8csr+y1qO8DAyEIlTA1aTcOs9Dbp?= =?us-ascii?Q?HxBTdJ9IZLBeASHNWL7JKE0UZBGBc/xECKRwdms2TdaHAOfz4tAq0AP5iSgC?= =?us-ascii?Q?l1tGacvdOw+aDp/ECAudwURgi1LgvLZ1x4jI5GXIY7Mk9lu4Wn3IuIqszMcM?= =?us-ascii?Q?gSQIsLbEzCxfPJpXGDgkfZ98A2rhgtK+05xpc4fKt3cSD+3xV02+dLFZQ04H?= =?us-ascii?Q?e06k3xaF30/iPRCXwjFSdwWEtjd5B3LktQyjCjrL1BB94t71uzfBFTwv2Ie6?= =?us-ascii?Q?Q9a7cC0D9AE/xVKDFiaLAlRKpEOO0W06KndwMD8lOjA9DTZgqnft13wqeg3M?= =?us-ascii?Q?qpJWggxPahW0DGOQESeETIGkW6EAhB10YAh1mL5TZ35q+ERc9UctgDHbQZhl?= =?us-ascii?Q?dzYjtY0xbm69McdJM5LC/z1hhHTR2Y22OkANxJ61/+Wuekg6Ao9Ex1yNd5IQ?= =?us-ascii?Q?an6V47MGMnr9rF21Z28BYgRb4dp3lUcAQZqJtqyQeFJGLP7ka+jjvNDhMwiZ?= =?us-ascii?Q?6bLt91kJj0PUwTKj7sOkVTUivk8TWYPRB1g7U61GVIwDMalN8R3UubSZbM9M?= =?us-ascii?Q?Wu8fBaBqxC2/POByr8d+HfWlW4UkUtr7aYLWARBIY0G2cPSTkJLjI4BmD/Qt?= =?us-ascii?Q?tUgJiaGz/eSM5WR6XkT/2L7U57hTqmzoR6a0Zp2cE5uWDQM4ccLdjMFxj0xF?= =?us-ascii?Q?RzqRz+NfGHj/gItjVwtlmcjCTR2BTauOJR5rx6NT?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7e8826cf-ba7c-4d3e-d916-08dd96dd9d62 X-MS-Exchange-CrossTenant-AuthSource: DS7PR12MB9473.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 May 2025 14:01:13.1589 (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: Q8P8BUBZc+ZoyU9nojTne9qJkgECksQzzbdiE3jYlNcFEXdQdPEyQWo8yBFJk8vQ X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW6PR12MB9017 X-Rspam-User: X-Rspamd-Queue-Id: 353261A001C X-Rspamd-Server: rspam09 X-Stat-Signature: 1ozazfhjuxzemcg5c7nbfou6yx1rk7q4 X-HE-Tag: 1747663276-794510 X-HE-Meta: U2FsdGVkX19RFQriZZAPJWfABK0FWafEJj2nvptvmXn3UJUMtYvxjikb0vmmAA/ws36sxSEREkOQ9tFFdXkGVRBHVePncYLp3YVOdSaikIC1FFG8+XbNnJ0qbwd512OVhqTCuJsKwctH6ALaq+DygoJoCT6N5zyYA7vRruQsW7BoUW5O9GLR/8zIeWjKjtSPhKOAc69g2XBdNXR/kgf+LKA863goGfSYAGjYfry+z3Jmayx/FzJdH05sJNWihAKnbQnxjjKQUZR+qo/4Bc39RB4fKrpU3Ux+4l/QdL77xAwC261vsPEeRGGoSfg3ZvNA5Mh3Lpa4HA90w9MzLeRAgYMwAQT5BjBrG3qwfWrQbXXJoLC6NxABcnmigbi61cgG/G20NOSq4/IdEk0REfjkI+vb1sKX8PPs9LOzZYb9/Tzj49xbkKHS5732IEl4vlccWD9U3yuq3RDMTjvCPA7RouSRdEWwA3wCWeIq11p2AXhl8luHDY3jR1XH2hbsXCxh+4Ew46ANgGrKAu1pUZX/Bj/92ru8B6HemR91rHENvMiVzOFmLoAj+9a5+M1MoGGpKCZpP+7xSPd76u+7jtHCAOm+CF4Tp89IadXdK5mc12KZ/WBTShCJLg0LEsSwuJVgBuBHjndEYg8D8kXhfG/Usl4YSoyBzmfW1271Ue9L8TC+IyAo7e8TZFfQkRYAeEug1ophCCdlEY4zwd6O3jFpHVJp3o6jyuUGRyPbkCUkXh9wZDXcr259bRm+a6xVqKy/wVtzcq6FmQMLrMWRNVofB1pVDMjSqJsk+UxTb/6TgCTLEQoT3dUbRhdxFz6nF83NplqwrQjuPMzhz0SRwi2jk1l8yU2OIwkpqKzNFl3HP7f0fEvCFUpxywORcXA1q4sYrXdZTuH1GD+2GVYj7HgCuGwtCfdwiMnMfy+AfSUcdInJSscK62q4vy1bhKWKMJo5mJKvisLd6UzZQuw58Lx L9U/gWgp +XtMZnYEzdl0viCR4ND/7U8q6CChrDFamilcmT4ovrr7WNaNNSlyD8KSZYZr/AlrGodyWmniZYLMC/wUzjtnWFvhkFG4STbWhsDAVkfDJz4bHFibnv/Ek8YBOWLV+GhSsl3zX+bgzDXx1YHHJeLApe61a4XywHA3N9Av8AHx9RTl0RaHTsmkLQ0der66HXH3qGwm5g/iEGz/go0eMMwU0SgydCaOZegLDUKx4RAPkRC7HaktntvQqoTpVA5g+Dvg5YqA9kOR12Ss54hnNChwfVUfVjJAodKad0IkBtry22dm5ulY6YL/jCgxFQpYOkuKaeblS/GoMZ4regNGf7ZvDSvkw8LnxW8l5IpGqKXwnf8t3H0k8uy/bIdf0LlUuVznR6Cr4D0AFnMR9MoEx5tvT1Gm7KsTL+g5aDSUb 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: On 19 May 2025, at 3:44, David Hildenbrand wrote: > On 09.05.25 22:01, Zi Yan wrote: >> Hi David and Oscar, > > Hi, > >> >> Can you take a look at Patch 2, which changes how online_pages() set >> online pageblock migratetypes? > > Sorry, now looking :) > >> It used to first set all pageblocks to >> MIGRATE_ISOLATE, then let undo_isolate_page_range() move the pageblock= s >> to MIGRATE_MOVABLE. After MIGRATE_ISOLATE becomes a standalone bit, al= l >> online pageblocks need to have a migratetype other than MIGRATE_ISOLAT= E. >> Let me know if there is any issue with my changes. > > Conceptually, we should start with MIGRATE_MOVABLE + isolated, to then = clear the isolated bit. OK, in my current V5, I added void init_pageblock_migratetype(struct page, int migratetype, bool isolat= e) to do this, so that one can initialize a pageblock with a migratetype + isol= ated or not. Let me check your comments on Patch 4 too. -- Best Regards, Yan, Zi