From nobody Sat May 10 05:53:28 2025 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail(p=none dis=none) header.from=linux.alibaba.com ARC-Seal: i=1; a=rsa-sha256; t=1605864977; cv=none; d=zohomail.com; s=zohoarc; b=l6KQi7M4QtTKbwfQA8N4lAcQcAQDE3f5R1u2ywdeGhlFJaasN6zSsiXk5DI6ctIf1Hbr09Vmh0OTDm29YAaZ/5f0nudt4gjRVu2u2zBIc4NcRuTFsQxiKuhd3wzi5IgVqr/O62+PCsaFaTw0TcO/hZ67/N1+qqrp7bP9ZGnj6mk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1605864977; h=Cc:Date:From:List-Id:Message-ID:Subject:To; bh=/T206eRTgYhC5bqJPXF7cnNZ3IEYPxeQZhUDFKn0e0U=; b=R0BbVJaSwnI/BWvu89JgZ8x3XtYY2NWGOBOx19fLgJJRVGg69paUtouUHER/ODi8ikP7vhy8fSGbqV6qIJpPr9I7lCY/Kf52LVdsbouVuvGx8gQQMJpFtC98LzsZV8/Y2ohg2eGEiyz/peZFlRa2mdOQVOY+5miMIO0Q94O6ApQ= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 160586497774776.94780695382383; Fri, 20 Nov 2020 01:36:17 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727126AbgKTJfg (ORCPT ); Fri, 20 Nov 2020 04:35:36 -0500 Received: from out30-132.freemail.mail.aliyun.com ([115.124.30.132]:34656 "EHLO out30-132.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725942AbgKTJff (ORCPT ); Fri, 20 Nov 2020 04:35:35 -0500 Received: from aliy80.localdomain(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0UFykla5_1605864932) by smtp.aliyun-inc.com(127.0.0.1); Fri, 20 Nov 2020 17:35:32 +0800 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R551e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04407;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=7;SR=0;TI=SMTPD_---0UFykla5_1605864932; From: Alex Shi Cc: Johannes Weiner , Michal Hocko , Vladimir Davydov , Andrew Morton , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH next-akpm] mm/memcg: remove incorrect comments Date: Fri, 20 Nov 2020 17:35:30 +0800 Message-Id: <1605864930-49405-1-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Swapcache readahead pages are charged before get used, so it unlikely be migrated before charged. remove the incorrect comments. Signed-off-by: Alex Shi Cc: Johannes Weiner =20 Cc: Michal Hocko =20 Cc: Vladimir Davydov =20 Cc: Andrew Morton =20 Cc: cgroups@vger.kernel.org=20 Cc: linux-mm@kvack.org=20 Cc: linux-kernel@vger.kernel.org=20 --- mm/memcontrol.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 45465c03a8d7..08c267305725 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6941,7 +6941,6 @@ void mem_cgroup_migrate(struct page *oldpage, struct = page *newpage) if (page_memcg(newpage)) return; =20 - /* Swapcache readahead pages can get replaced before being charged */ memcg =3D page_memcg(oldpage); VM_WARN_ON_ONCE_PAGE(!memcg, oldpage); if (!memcg) --=20 2.29.GIT