From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from HK2PR02CU002.outbound.protection.outlook.com (mail-eastasiaazon11010034.outbound.protection.outlook.com [52.101.128.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E35501D9694; Fri, 17 Jan 2025 10:25:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.128.34 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737109520; cv=fail; b=OVmxM09uReosvFDWNp7j8ZRUwzTHPIU3b1Z4rmPptMirgIHrAAKKYKDpcArQ5qJ37yKHzTxeVJrsJX7oQhFSSJ6oWMkfJr0OOUx62/8p+x95kAJXvL+VeSlWPqNyxJlIf8y5Vcmli90LqExBS2jc8YiuuESA1p1JhjuiIeureFM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737109520; c=relaxed/simple; bh=0352mE9hhmrJKtFjHj5U0HkO1UmlxZWHoj+UZAF7W6s=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=NTt5orZL5bKjZPidIrGuAq8TV6fOOeO8X9PoBCasLz3PHlQp2q0moEBu0s1RnS1q/d3Ls52dkVh3O3pc2+teLwyXIqCQmMln9mzHYNZiqTakBGwMYrRSqoUk2NZ+CMmDYXiWCPy0nN5sOheRRLrSC5ay+rA5N/4xztCHO/HHxPk= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=vivo.com; spf=pass smtp.mailfrom=vivo.com; dkim=pass (2048-bit key) header.d=vivo.com header.i=@vivo.com header.b=bPOxGz3H; arc=fail smtp.client-ip=52.101.128.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=vivo.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=vivo.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=vivo.com header.i=@vivo.com header.b="bPOxGz3H" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=jJf3mZcsZ2v/E/K6uyyIdOWQQUN79mX1h1RJne8trtUiEELjJsqbx7YgnbCkL1bq0JgJjdWjturWT8i3MMxvHMSbZqlihHIUI4ipbdDVNIV8cLRvX9GHTd7aYZmajCKCWZ5/eTvN4SPbfX0aqlGdf3yyUDk3Vl8a98bOZOHKV1aKgK5he0TfaFF31nkq01fURFkm8YUBllowj0oAgFDswNfffTC8EP2I6RQAMDNlAMqROZVCdz0CQIRsqlbDGcwQo6IeqUEun0dZB9z0xzLYlcnXffnTcjLI7YTm5LMYAqdvqsx/0tlr7L60LcfaeVolDeQWGh4tmFuVqktHoj5/yg== 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=0352mE9hhmrJKtFjHj5U0HkO1UmlxZWHoj+UZAF7W6s=; b=I0nfnv3wueeGqpKDpCqRelQWqbBk3H6W+Ochvse6wvePyJtf5mjxa5xHrUkuBgFW8ulMLo2SyHA4W2YANoYNV2JAuHrtluyGvF7Bifylj1obih+OcOAHI+eAAkYPQO6Vj+PgbYO5rPgXTe0fYeLCE04gvLejw97mZT7yDQMR7B82K04Tud+RddV38AU4q5c+jctHFUAoavpt0maleuLyw5llIPMtdfo23dEfGusuXIRMbo+EgIiwwGwQBSG9AgrDrW/pJjpOPyuKI1RS5T91zpJZKBsYY71GRlNbwJ0j7JXZ24AevREe8JTr+TucAV0/EZCSkwi7n5rp/3ktGC6Wcg== 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=0352mE9hhmrJKtFjHj5U0HkO1UmlxZWHoj+UZAF7W6s=; b=bPOxGz3HGd3effxu6/9vdnlshPjlqud+k9ssOM6dbBdMO7m9J+zjgpi79AbunEne6x4OyAUxDHd8UTvVRw329fIQ2LTD/9LzVtnAV34izCdmeVAn3qOwWZbq6RhMYB/p/cwnPaGA9KjlNnlmiVrF3n6AuFAZ16w1pfPbQ+Xpdb0CsWUgASbzaAYuhHUUS2vIFpLnoAKK14tdMXeSKy/IIOUT3oakK6/IE31InE8cxS3otGpI2u6lY4yg637vaT+to/Ny/QjNCOyBA/WAW7SwBURCrcYJ0uY+nwJRFWA8YXWpea3L/UPP0A0ImRH9aJH3YZag3CZzjh2zDVFGTPpTLw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=vivo.com; Received: from JH0PR06MB6849.apcprd06.prod.outlook.com (2603:1096:990:47::12) by TYZPR06MB6094.apcprd06.prod.outlook.com (2603:1096:400:33c::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8377.6; Fri, 17 Jan 2025 10:25:14 +0000 Received: from JH0PR06MB6849.apcprd06.prod.outlook.com ([fe80::ed24:a6cd:d489:c5ed]) by JH0PR06MB6849.apcprd06.prod.outlook.com ([fe80::ed24:a6cd:d489:c5ed%6]) with mapi id 15.20.8356.010; Fri, 17 Jan 2025 10:25:14 +0000 Message-ID: <3156c69f-b52d-4777-ba38-4c32ebc16b24@vivo.com> Date: Fri, 17 Jan 2025 18:25:13 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: memcg supports freeing the specified zone's memory To: Michal Hocko Cc: Johannes Weiner , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, opensource.kernel@vivo.com References: <20250116142242.615-1-justinjiang@vivo.com> From: zhiguojiang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: SG2PR01CA0196.apcprd01.prod.exchangelabs.com (2603:1096:4:189::23) To JH0PR06MB6849.apcprd06.prod.outlook.com (2603:1096:990:47::12) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: JH0PR06MB6849:EE_|TYZPR06MB6094:EE_ X-MS-Office365-Filtering-Correlation-Id: ee51d5a2-0e6b-4eab-3109-08dd36e13b41 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024|43062017; X-Microsoft-Antispam-Message-Info: =?utf-8?B?anBnV25ha29KWDJNd3krTGtodE5aVnYzamg0S0paWWtHTEVTTm1xR3pac2pE?= =?utf-8?B?cnlmSVg3L3JNaTJ3Skx0b2VOMUVBVWR1ZEUvRGIwaXArOGJBT2FBSkJSQUxo?= =?utf-8?B?aTYxVUpieDlhZzc1Z0NmMzJiQUR4R2tzWU44eEZMSUU5dThwV0pTNDRqTm5j?= =?utf-8?B?WnhJYnFpemJ6alozZW1jUWxBR0d0MkZObHgyb2tRRjhjMlNIZWtDS3JpVE9u?= =?utf-8?B?MGg4TS9OQWk4MVhpQ0ZqazFINk1pVU9OY255cFVIbjg0WFJ0eHZoSDB0b0Qr?= =?utf-8?B?cEd2SVpLOURxOXJwdUQ1QVJOZ0o2dVp0dklWL3lEMnZjUWNmaXB3aEd1SkYx?= =?utf-8?B?UW9kL0Z5MUhLKy90d05GNGcraXZCYm1DNHpOellQYzVyb01nb0RrQ291YzV6?= =?utf-8?B?RW4wdHBnd213NDQ0VE1rcldpaHZBNHhscXlpMWZxdDJFZ2Q0Q2N3UkpPNkRU?= =?utf-8?B?Z2lMU3hBM05obXVzWTcwVmt1UE0wZlFyaTV5c2ZXdWJ0dlMwaTRISW5RdVVw?= =?utf-8?B?cFJEdmlkSE9wM3M3U3h4aUJ4blZYTzRVbmdzclM1WU9EUW4ySXdXVVNrd2Vv?= =?utf-8?B?L3B2ZGxDeG1QeGZHSzFnU2JzM2tiR08zVnNCeDZXTm1VRm9ud21qczNrcFgv?= =?utf-8?B?eXd0N2pLZWcwTm83eDRCR0RjSzArV1h6d2M4aXlud0RHVWJiM2xENXFPRDZC?= =?utf-8?B?N2k0WDNvWTE1NTRnSnJXNXVyTFpSU0V3NVFoYzRBUit5cjM5QlF5N1JSbDZ1?= =?utf-8?B?ZjQ3ZVpZdG03SjNhOXRTb2dRcVVjbXEwUDRYVGtlZ0tYL25qZVhIYW16OWdt?= =?utf-8?B?MjhIelowM2JJdHBqWkZxckRIZmxPaHYxc1ZWcVl0UnBDelhaV3RrNXpVMTR2?= =?utf-8?B?eS9EMlpmYjBhaE9mRHEwd2dMbjRlSDFoSWVYWmh0VGluLzh6d05MbkFPeUFl?= =?utf-8?B?T08xK3FUdlRUSzB4L3BWWnlPLzl6RVQ1djM5SkttdE50Uzk2SzVMamJLeVZU?= =?utf-8?B?N1ZKcUNRbGd0cnNRVkVHTjFmUllLM0NLSHZHT1pScnU5L1B2bHVnQzR0UEE2?= =?utf-8?B?dHFrcDRHSUFtM0didVdnaUNJMW9xREdybUsrM2pqMWxIMHl4ZGdWWUtGSkpO?= =?utf-8?B?enhuVlNUZ3lubUFoREp5WTAyWU93VXNnRGpUTmF2WFRHTFdlbHNCY0pvMEJm?= =?utf-8?B?OFNGd0ZPMS85RVU2TU8wdzBXTGxORGhOSGo0WThLeWNQWENHUXVwZWJ5b2Vm?= =?utf-8?B?NlA1WFJGTFpGbk1xTUFBZ2gvSSs0TllLL3c2YVVzTER4aWkxTWtaMG03b3dk?= =?utf-8?B?bFBCUHllSzRnU2xhRW9XckFHSWpqNDQvV0RYZHVyNHZJVU5GMVhSRk5LVTV6?= =?utf-8?B?VzJiRnVlZjYxTGZCRnFsRExUN29KUHpabjRDZERsYndOYmpIUnhlU1Eyc3dI?= =?utf-8?B?a3R6UElsZm9FNWJ6MDRRT0JTd0dyMG5ZSDlIenJUN29LRTNzalVZUzRWdHlz?= =?utf-8?B?TkJETTRLbXphWGVXOHJhTHM3Q0dvTXRtb0FOczZxR1dJSUJnVjZrejVrcHV3?= =?utf-8?B?WXBiNUh4WXhOUnJtbWVreHMvSzZvQklnUlpIcFlhS1R0VWtpanNXMDRtVlBG?= =?utf-8?B?QlBhWDg4UVpvWFNFeVMvaU1RcVJXMGY0RllrOUhoZXg2UFhlTWFsZ3pDS1dC?= =?utf-8?B?SmptWXlUanRzRzV5UXE2RWpwbDVUQzk5VmV0MlFhU1V2VzVRd1NBZFJEaG9q?= =?utf-8?B?K1NidmE3SGUySFdxN25EWDZ0cThBd1NicmZjdG5EaUVGUUpnbjEvOG9QRDBL?= =?utf-8?B?REMrQVlrZFFWUnBNOTRHdHROTHpvZDJSbGh1T3V5WTBnR1FhVFVraVY0UE5D?= =?utf-8?B?OEhSbE5RemttdGRDeWJQMnNYQ1g5U3NwTm5xZCtvQlk3MEVVaXJMS1p1WDJU?= =?utf-8?Q?sDhrHQ8aMzns3eRlTaeZeVOboCQBmC8a?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:JH0PR06MB6849.apcprd06.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(376014)(1800799024)(43062017);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?cmRFbGx3ZUpLbDhoajRVeUhqYWxDOGZJSVZ1MUM5WTRZSzBsZDQxR1VGMnFY?= =?utf-8?B?QmxMNk55N05GZjkxd3VWKy92dGxKN1RoV05WeTNkeEhJYUxCdXJTYjhRVTA3?= =?utf-8?B?NWhlOERQTWpjZjBXNGFWQzdBQkRneC9yL0hmdGtPZmMyTGs5YUZNT292eCtX?= =?utf-8?B?WnN1clRvSWxBSnFtUUh0R3NjWmhZRXhXb2plcmJQZys0Y3NEZGFqKzdPUTdJ?= =?utf-8?B?cUg4SXFUcWhPQUhRVURTWXVaTzdSZHZlQlQrMlF6Y1FheGtDVG95Rlk4Ym55?= =?utf-8?B?WUdZMmZybTcwYjIzWXVhRCtFVis0V2pnZW5NR1ZXd3pZcDZ5dk5CS011QVdk?= =?utf-8?B?T0p4dVkwSDFnNnBjbVJmWGxkRDRGVEtoVHNPV01RTHUxNnRkMVNyRktVRHI2?= =?utf-8?B?YU4weEJ3blAyYjZWdVM1NVA4VXAwOHo4dGV5QkxSSXRHdzk5SW84MWZvOWNR?= =?utf-8?B?SXVSVTllMC90SGN3L0xTVjhPUjRHQ0kzWG5FWU1zb0UreEpSUm1OR0hRaXZx?= =?utf-8?B?OGY3QTdzWTBRdnk1cDUzSllGRXdkdkpqK241clJMR2NONG9IOTlpV1BwWHA3?= =?utf-8?B?Z0xaSUNuUmIrQ3doODdqWW1QVzRFNFk4YW04RnVsMXlsOVBmcitZVnlQaER6?= =?utf-8?B?NWptSXVwVExsRS96Y1h5aEJ0QVBFQS9aejJDT0Q1WUV5ekFMVjNLWVFESG5T?= =?utf-8?B?VGZlNU5EWlllam5KTm1YZG9RV3dRYUJmeWd5YjQ2Mm1uSlFldmF0cEpyZ25R?= =?utf-8?B?bTRaQTZ6bStOOGl3eHlPZWZvTmtwc0dOQlAvQ3UwOVNCNEpXK2NxMjFvR2l1?= =?utf-8?B?RDNqbEc0RHJNcFVGcm51dkFKUVhlY291NzAzM28vN1ZGTU9kVkJpVmFkVmIy?= =?utf-8?B?aHlEWFMzOEdqK3ErYlBoVmFyaGRmaDZ1VkQrRzg2RXl4enNkL2JuaHFOK0VW?= =?utf-8?B?UWd6OERGcG51MFRzQTViWFhPWnFnOGx3ODBDWUQ5amJQWGh1T2p5MnBoYjdq?= =?utf-8?B?ZHlncTdCWTlQRXdSbGY4V1VhSXdic21KYnRzMEEyYUtwUXlxUEY5VXBKSHBv?= =?utf-8?B?aS9jN0pyUE8zZTdXYk53Q0JWU1dqZEdhME16S0RxSGhoNmVVUnVERnUvKzZM?= =?utf-8?B?RGlXRHJnOGF4V1VmRFRISmVpdmNoUzc2ZUl3eVBWMXJqQ0FlRGJHZmQ1TnRn?= =?utf-8?B?eFR3UncvSnhYMFFkMnVUK1g1SXY1MUlCL3F3RDRYVHNEYXFEMzBFYWNPQlVG?= =?utf-8?B?UXU3MzNFZXdud08xN0hqZUJpMU1veHg0cklNZGViaGkwUlN2U21XcEEwUEY4?= =?utf-8?B?bVh6SjNTWkV2RDF0QXNUb0tYSG0rYTUydi9TbXVsNFVXSVdXd2lISmxramhj?= =?utf-8?B?NHdaRjVPRENpNzFnVEhmTllRYkU3ZlNET2VzcDFCdWdjTmdFZlIxYzJUUmhr?= =?utf-8?B?dXJkMVlUQ3cxbWpEZmg1dFRsRElpZldvVmdzTXNCQllDTEVwRysvR1pCVElX?= =?utf-8?B?VVhSeFdvOWhRbnM4UVZmQ0xCdzlaVUlrZ1lvMjkzaGo5SHdReFhDWEJNT2kz?= =?utf-8?B?ZUxhOStCYVErbkhCU1hRaGl0ZDEwdGw3THZwK0NSaWM1b0ZvK0JlcDgvOGhY?= =?utf-8?B?UnFXSkZJZDllZGdNekhyeUlsSEx3UVpxSHZsZzh6bCsxSUVCaFdFeWJoS2pq?= =?utf-8?B?SFBjTVVVK01GK0t0N044ME92UndGOFNvQ1Bjb3dsZmlkMUYvL1pPL3hZVXRP?= =?utf-8?B?TlRjQkVSRG9icnJWODRicmJnaFk2QWZIZkpBRUpjSHUwcnlHVXlrSzk0TGlF?= =?utf-8?B?dEpCZ0dTenk4WUgxbUpNaW9zejA5Mlc0MUM5amNlM2t4UVJsangwR0dCQktM?= =?utf-8?B?aWZ4dXpZVUIwSjlkZU5IZWs4UUxueU40ajNubGU4R3RRQnRSRi9LYmd6UlNk?= =?utf-8?B?MmpUYVNxWWoyRno3S2F3bFhQdGdJTHNwaDFKZnhXcmZzMTJCWE9WVnlVUkx6?= =?utf-8?B?WUJNRFpYVnFvcTIxazBrVkVWYkl2S1ZpYzlxa0R5eCtOVHYxYkxobkQ5V1Qz?= =?utf-8?B?dUlIVk9IOTkwWW1UMlVwdVIvNFpKV0JrcEVkVGRmOEtIS0txU0ZROVdZZCs2?= =?utf-8?Q?pIPH397c7QFyg/TFiCGMDgubH?= X-OriginatorOrg: vivo.com X-MS-Exchange-CrossTenant-Network-Message-Id: ee51d5a2-0e6b-4eab-3109-08dd36e13b41 X-MS-Exchange-CrossTenant-AuthSource: JH0PR06MB6849.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Jan 2025 10:25:14.7498 (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: PYP73x+XLrqv/2Ndf0ngW1K6fip4ioRmZpOqMII19FLqOdfirnbf0d3+IudSkyt6VbgteFhbA1XNaUtbxutjRA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYZPR06MB6094 在 2025/1/17 17:33, Michal Hocko 写道: > On Fri 17-01-25 12:41:40, zhiguojiang wrote: > [...] >> In response to the above situation, we need reclaim only the normal >> zone's memory occupied by memcg by try_to_free_mem_cgroup_pages(), in >> order to solve the issues of the gfp flags allocations and failure due >> to gfp flags limited only to alloc memory from the normal zone. At this >> point, if the memcg memory reclaimed by try_to_free_mem_cgroup_pages() >> mainly comes from the movable zone, which cannot solve such problems. > Memory cgroup reclaim doesn't allocate the memory directly. This is done Yes, what I mean is that we hope to reclaim accurately the specified zone's memory occupied by memcg through try_to_free_mem_cgroup_pages(), in order to meet the current system's memory allocation requirements for the specified zone on the memory allocate path. > by the page allocator called before the memory is charged. The memcg > charging is then responsible for reclaiming charges and that is not > really zone aware. > > Could you describe problem that you are trying to solve? In a dual zone system with both movable and normal zones, we encountered the problem where the GFP_KERNEL flag failed to allocate memory from the normal zone and crashed. Analyzing the logs, we found that there was very little free memory in the normal zone, but more free memory in the movable zone at this time. Therefore, we want to reclaim accurately the normal zone's memory occupied by memcg through try_to_free_mem_cgroup_pages(). Thanks