linux-kernel - Re: [External] RE: kernel warning percpu ref in obj_cgroup

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Message-Id: <20210331172534.4ea75eda7e7accd166eef8b4@linux-foundation.org>
Date:   Wed, 31 Mar 2021 17:25:34 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Muchun Song <songmuchun@...edance.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Yang Shi <shy828301@...il.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>, Roman Gushchin <guro@...com>,
        Shakeel Butt <shakeelb@...gle.com>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Xiongchun Duan <duanxiongchun@...edance.com>
Subject: Re: [External] RE: kernel warning percpu ref in obj_cgroup_release

On Wed, 31 Mar 2021 22:45:12 +0800 Muchun Song <songmuchun@...edance.com> 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.