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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2749EC5AD4C for ; Thu, 23 Nov 2023 07:00:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344789AbjKWHAl (ORCPT ); Thu, 23 Nov 2023 02:00:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233025AbjKWHAj (ORCPT ); Thu, 23 Nov 2023 02:00:39 -0500 Received: from out0-201.mail.aliyun.com (out0-201.mail.aliyun.com [140.205.0.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46F12C1 for ; Wed, 22 Nov 2023 23:00:44 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R141e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018047213;MF=henry.hj@antgroup.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---.VU5T8VK_1700722841; Received: from localhost(mailfrom:henry.hj@antgroup.com fp:SMTPD_---.VU5T8VK_1700722841) by smtp.aliyun-inc.com; Thu, 23 Nov 2023 15:00:42 +0800 From: "=?UTF-8?B?6buE6Z2WKOm7hOmdlik=?=" To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: "=?UTF-8?B?6LCI6Ym06ZSL?=" , "=?UTF-8?B?5pyx6L6JKOiMtuawtCk=?=" , , "=?UTF-8?B?6buE6Z2WKOm7hOmdlik=?=" Subject: [RFC] mm: Multi-gen LRU: fix use of mm/page_idle/bitmap Date: Thu, 23 Nov 2023 14:58:10 +0800 Message-ID: X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When Multi-Gen LRU is enabled, we can't use /sys/kernel/mm/page_idle/bitmap to track memory which is actually been used. Unfortunately we didn't find anyone report this problem, or it just by design ? Detail information, how-to-reproduct and our way to fix are written in our fix patch. Henry Huang (1): mm: Multi-Gen LRU: fix use mm/page_idle/bitmap mm/swap.c | 3 +++ mm/vmscan.c | 37 ++++++++++++++++++++++++++----------- 2 files changed, 29 insertions(+), 11 deletions(-) -- 2.43.0