linux-kernel - Re: [PATCH] cgroup/cpuset: Remove stale text

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Message-ID: <6f31fcdd-82d3-4d37-a730-607ad7ada260@redhat.com>
Date: Tue, 3 Dec 2024 13:10:59 -0500
From: Waiman Long <llong@...hat.com>
To: Michal Koutný <mkoutny@...e.com>,
 Waiman Long <llong@...hat.com>
Cc: Costa Shulyupin <costa.shul@...hat.com>, Tejun Heo <tj@...nel.org>,
 Johannes Weiner <hannes@...xchg.org>, cgroups@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cgroup/cpuset: Remove stale text


On 12/3/24 12:21 PM, Michal Koutný wrote:
> On Tue, Dec 03, 2024 at 10:43:26AM GMT, Waiman Long <llong@...hat.com> wrote:
>> Thank for noticing the stale comment. There is actually no task's cpuset
>> pointer anymore.
> Yeah, that likely evolved into task_struct.cgroup css_set pointer. The
> "guidelines" for it are in sched.h/task_struct comments + comments for
> struct cgroup_subsys_state.
> Also, users may need css_get()/css_put() if they needs subsys state for
> longer. (This info isn't actually cpuset specific.)

Yes, that is likely the case though I didn't trace back the git log to 
figure out its exact evolution. Anyway, these information are optional 
as it is not cpuset specific.

Cheers,
Longman