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[23.128.96.18]) by mx.google.com with ESMTP id a18si12569923edx.421.2020.07.21.04.20.15; Tue, 21 Jul 2020 04:20:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729481AbgGULUD (ORCPT + 99 others); Tue, 21 Jul 2020 07:20:03 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:2985 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727043AbgGULUD (ORCPT ); Tue, 21 Jul 2020 07:20:03 -0400 Received: from DGGEML404-HUB.china.huawei.com (unknown [172.30.72.56]) by Forcepoint Email with ESMTP id 9162C21CE0AE9FFC4EDC; Tue, 21 Jul 2020 19:20:01 +0800 (CST) Received: from DGGEML424-HUB.china.huawei.com (10.1.199.41) by DGGEML404-HUB.china.huawei.com (10.3.17.39) with Microsoft SMTP Server (TLS) id 14.3.487.0; Tue, 21 Jul 2020 19:20:01 +0800 Received: from DGGEML528-MBX.china.huawei.com ([169.254.7.143]) by dggeml424-hub.china.huawei.com ([10.1.199.41]) with mapi id 14.03.0487.000; Tue, 21 Jul 2020 19:19:52 +0800 From: jingrui To: "tj@kernel.org" , Lizefan , "hannes@cmpxchg.org" , "hannes@cmpxchg.org" , "mhocko@kernel.org" , "vdavydov.dev@gmail.com" CC: "akpm@linux-foundation.org" , "linux-mm@kvack.org" , "cgroups@vger.kernel.org" , "linux-kernel@vger.kernel.org" , caihaomin , "Weiwei (N)" Subject: PROBLEM: cgroup cost too much memory when transfer small files to tmpfs Thread-Topic: PROBLEM: cgroup cost too much memory when transfer small files to tmpfs Thread-Index: AdZfPbaDbBlN0uuzRT+WBs1zGYD4fAAETDVg Date: Tue, 21 Jul 2020 11:19:52 +0000 Message-ID: <2E04DD7753BE0E4ABABF0B664610AD6F2620CAF7@dggeml528-mbx.china.huawei.com> Accept-Language: en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.174.179.43] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Q2M6IEpvaGFubmVzIFdlaW5lciA8aGFubmVzQGNtcHhjaGcub3JnPiA7IE1pY2hhbCBIb2NrbyA8 bWhvY2tvQGtlcm5lbC5vcmc+OyBWbGFkaW1pciBEYXZ5ZG92IDx2ZGF2eWRvdi5kZXZAZ21haWwu Y29tPg0KDQpUaGFua3MuDQoNCi0tLQ0KUFJPQkxFTTogY2dyb3VwIGNvc3QgdG9vIG11Y2ggbWVt b3J5IHdoZW4gdHJhbnNmZXIgc21hbGwgZmlsZXMgdG8gdG1wZnMuDQoNCmtleXdvcmRzOiBjZ3Jv dXAgUEVSQ1BVL21lbW9yeSBjb3N0IHRvbyBtdWNoLg0KDQpkZXNjcmlwdGlvbjoNCg0KV2Ugc2Vu ZCBzbWFsbCBmaWxlcyBmcm9tIG5vZGUtQSB0byBub2RlLUIgdG1wZnMgL3RtcCBkaXJlY3Rvcnkg dXNpbmcgc2Z0cC4gT24NCm5vZGUtQiB0aGUgc3lzdGVtZCBjb25maWd1cmVkIHdpdGggcGFtIG9u IGxpa2UgYmVsb3cuDQoNCmNhdCAvZXRjL3BhbS5kL3Bhc3N3b3JkLWF1dGggfCBncmVwIHN5c3Rl bWQNCi1zZXNzaW9uwqDCoMKgwqAgb3B0aW9uYWzCoMKgwqDCoMKgIHBhbV9zeXN0ZW1kLnNvDQoN ClNvIHdoZW4gdHJhbnNmZXIgYSBmaWxlLCBhIHN5c3RlbWQgc2Vzc2lvbiBpcyBjcmVhdGVkLCB0 aGF0IG1lYW5zIGEgY2dyb3VwIGlzDQpjcmVhdGVkLCB0aGVuIGZpbGUgc2F2ZWQgYXQgL3RtcCB3 aWxsIGFzc29jaWF0ZWQgd2l0aCBhIGNncm91cCBvYmplY3QuIEFmdGVyDQpmaWxlIHRyYW5zZmVy cmVkLCBzZXNzaW9uIGFuZCBjZ3JvdXAtZGlyIHdpbGwgYmUgcmVtb3ZlZCwgYnV0IHRoZSBmaWxl IGluIC90bXANCnN0aWxsIGFzc29jaWF0ZWQgd2l0aCB0aGUgY2dyb3VwIG9iamVjdC4gVGhlIFBF UkNQVSBtZW1vcnkgaW4gY2dyb3VwL2NzcyBvYmplY3QNCmNvc3QgYSBsb3QoYWJvdXQgMC41TUIv cGVyLWNncm91cC1vYmplY3QpIG9uIDIwMC9jcHVzIG1hY2hpbmUuDQoNCldoZW4gbG90IG9mIHNt YWxsIGZpbGVzIHRyYW5zZmVycmVkIHRvIHRtcGZzLCB0aGUgY2dyb3VwL2NzcyBvYmplY3QgbWVt b3J5DQpjb3N0IGJlY29tZSBodWdlIGluIHRoaXMgc2NlbmVzIHRvIGJlIHVzZWQuDQoNCnN5c3Rl bWQgcmVsYXRlZCBpc3N1ZTogaHR0cHM6Ly9naXRodWIuY29tL3N5c3RlbWQvc3lzdGVtZC9pc3N1 ZXMvMTY0OTkNCg0Ka2VybmVsIHZlcnNpb246IDQuMTkrDQoNClByb2JsZW06DQoNCjEuIERvIHdl IGhhdmUgYW55IGlkZWEgdG8gZGVzY3JlYXNlIGNncm91cCBtZW1vcnkgY29zdCBpbiB0aGlzIGNh c2U/DQoyLiBXaGVuIHVzZXIgcmVtb3ZlIGNncm91cCBkaXJlY3RvcnksIGRvZXMgaXQgcG9zc2li bGUgYXNzb2NpYXRlZCBmaWxlIG1lbW9yeSB0byByb290IGNncm91cD8NCjMuIENhbiB3ZSBwcm92 aWRlIGFuIG9wdGlvbiB0aGF0IGRvIG5vdCBhc3NvY2lhdGUgbWVtb3J5IHdpdGggY2dyb3VwIGlu IHRtcGZzPw0K