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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 ED7E2C433ED for ; Thu, 1 Apr 2021 00:26:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9EB0F6100C for ; Thu, 1 Apr 2021 00:26:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229486AbhDAA0I (ORCPT ); Wed, 31 Mar 2021 20:26:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:39250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230291AbhDAAZr (ORCPT ); Wed, 31 Mar 2021 20:25:47 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 54D2261008; Thu, 1 Apr 2021 00:25:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1617236735; bh=Ab/glsGI/Ay+0LKOxR15reT0g9n63sQ4EYBQkme/glk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=sMNXmhP3VVvCLhrMsSNFJr93GA4t1FuSeAcAd1dsATz1H1ETHQe+7j1Pn9x5H/7I7 KilZRTncCp0oluT34j17LH7TKlKo3hOG/jwO5/OgTf0r6WpCiKVo2srh5WLZ5SimbT cvcnJYM0EWuv4qhJkCy9N90zSUEazUzCl5hZKj2M= Date: Wed, 31 Mar 2021 17:25:34 -0700 From: Andrew Morton To: Muchun Song Cc: Stephen Rothwell , Linux Next Mailing List , Yang Shi , Christian Borntraeger , Linux Kernel Mailing List , linux-s390 , Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Vladimir Davydov , Xiongchun Duan Subject: Re: [External] RE: kernel warning percpu ref in obj_cgroup_release Message-Id: <20210331172534.4ea75eda7e7accd166eef8b4@linux-foundation.org> In-Reply-To: References: <20210329205249.6b557510@canb.auug.org.au> <83263d0d-1f3f-8a3c-8a95-49e0cfa15051@de.ibm.com> <4419611b-3282-2197-884c-332025cdada8@de.ibm.com> <7c27fc2e-5cea-5a17-6e30-8ae1cb291274@de.ibm.com> <179f84ad-7b98-4bc5-f895-c19faabbb311@de.ibm.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Wed, 31 Mar 2021 22:45:12 +0800 Muchun Song wrote: > > Hi Andrew, > > Now we have two choices to fix this issue. > > 1) Send a v6 patchset (Use obj_cgroup APIs to charge kmem pages) > to fix this issue. > 2) Send a separate fix patch (Just like above). > > Both ways are ok for me. But I want to know which one is more > convenient for you. Either is OK. 2) is easier.