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 X-Spam-Level: X-Spam-Status: No, score=-1.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,URIBL_BLOCKED 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 15B3EC0044C for ; Fri, 2 Nov 2018 02:45:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE09D2081B for ; Fri, 2 Nov 2018 02:45:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=microsoft.com header.i=@microsoft.com header.b="HVD9B9Z9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AE09D2081B Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726377AbeKBLvR (ORCPT ); Fri, 2 Nov 2018 07:51:17 -0400 Received: from mail-pu1apc01on0138.outbound.protection.outlook.com ([104.47.126.138]:35825 "EHLO APC01-PU1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726089AbeKBLvR (ORCPT ); Fri, 2 Nov 2018 07:51:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=GAjfNQdwv6tVxgV3TMzbNrh5CJnehUzbyxN/Q0su/f0=; b=HVD9B9Z9HyiM+DJqv4gpQPJrLB4e6zpAKB6IXf3FQugji2CKkDTE/RYhuEdv25BVDA71N8mL+LEVmUQM6v1qgMmJbdkxbnxWUs+PeLg0mWsK77TsQ7WDJuFrBoxmTu04NKAylb0KNTgrJ5H4hJPdVaGD7pYfjlcHkIrLjvQSCcQ= Received: from PU1P153MB0169.APCP153.PROD.OUTLOOK.COM (10.170.189.13) by PU1P153MB0121.APCP153.PROD.OUTLOOK.COM (10.170.188.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1294.1; Fri, 2 Nov 2018 02:45:43 +0000 Received: from PU1P153MB0169.APCP153.PROD.OUTLOOK.COM ([fe80::e85a:f0c0:9810:d217]) by PU1P153MB0169.APCP153.PROD.OUTLOOK.COM ([fe80::e85a:f0c0:9810:d217%3]) with mapi id 15.20.1294.024; Fri, 2 Nov 2018 02:45:43 +0000 From: Dexuan Cui To: Roman Gushchin CC: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Kernel Team , Shakeel Butt , Michal Hocko , Johannes Weiner , Tejun Heo , Rik van Riel , Konstantin Khlebnikov , Matthew Wilcox , "Stable@vger.kernel.org" Subject: RE: Will the recent memory leak fixes be backported to longterm kernels? Thread-Topic: Will the recent memory leak fixes be backported to longterm kernels? 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: /+gaK9CYZrlW/SRcOM+WEAbnB9bwySqsNEOF9WNy3f5U3Yohq5jEcnLiWLiifrbsOqIyVDPywYuWUZz93WrxPKwQSgOUDhaJjZItUlvHnmYQ3JFWyqWKQuIa1jrJTyhj8C7RxI4iH7CJZyfxMysSYiTal8sQxyovWKLVJkJS3XicQq+fZ4SjrRWVuuzgUskAJz8QCL2C1t55C4ihoWMtPdwOn4Hc58rGb7HynKHGrc8XsdFpXlP5mUDzq+Urb1f/IqgK52XsipgvSsgx8yNTPHvweS5rB9dnM8H8d6J5T52ZzBm/9PAAE19Vmuc1vENziygxDLeGqOtoaH7c43C8ya5bv/cxTsqgqz2cqAF6E3U= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: c669e7ee-19e0-4a83-5516-08d6406d48a5 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Nov 2018 02:45:42.9108 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: PU1P153MB0121 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > From: Roman Gushchin > Sent: Thursday, November 1, 2018 17:58 >=20 > On Fri, Nov 02, 2018 at 12:16:02AM +0000, Dexuan Cui wrote: > Hello, Dexuan! >=20 > A couple of issues has been revealed recently, here are fixes > (hashes are from the next tree): >=20 > 5f4b04528b5f mm: don't reclaim inodes with many attached pages > 5a03b371ad6a mm: handle no memcg case in memcg_kmem_charge() > properly >=20 > These two patches should be added to the serie. Thanks for the new info! =20 > Re stable backporting, I'd really wait for some time. Memory reclaim is a > quite complex and fragile area, so even if patches are correct by themsel= ves, > they can easily cause a regression by revealing some other issues (as it = was > with the inode reclaim case). I totally agree. I'm now just wondering if there is any temporary workaroun= d, even if that means we have to run the kernel with some features disabled or with a suboptimal performance? Thanks! --Dexuan