linux-kernel - Re: [External] Re: [PATCH] cgroup/cpuset: Add a new isolated mems.policy type.

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Message-ID: <ecceec1b-d201-fef5-de91-476c44151517@bytedance.com>
Date:   Fri, 23 Sep 2022 23:26:32 +0800
From:   Zhongkun He <hezhongkun.hzk@...edance.com>
To:     Michal Hocko <mhocko@...e.com>
Cc:     hannes@...xchg.org, roman.gushchin@...ux.dev,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org, lizefan.x@...edance.com,
        wuyun.abel@...edance.com
Subject: Re: [External] Re: [PATCH] cgroup/cpuset: Add a new isolated
 mems.policy type.

> 
> set_mempolicy is a per task_struct operation and so should be pidfd
> based API as well. If somebody requires a per-thread-group setting then
> the whole group should be iterated. I do not think we have any
> precendence where pidfd operation on the thread group leader has side
> effects on other threads as well.

Hi Michal,

I got it, thanks for your suggestions and reply.