linux-kernel - Re: [PATCH] cgroup/cpuset-v1: Add missing support for cpuset_v2

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Message-ID: <CABdmKX2CX_S_bTc11SBJELmGRS=gwiC1gFbTGHk_GTndTYFa+A@mail.gmail.com>
Date: Mon, 14 Apr 2025 13:58:49 -0700
From: "T.J. Mercier" <tjmercier@...gle.com>
To: Waiman Long <llong@...hat.com>
Cc: Michal Koutný <mkoutny@...e.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-v1: Add missing support for cpuset_v2_mode

On Mon, Apr 14, 2025 at 1:11 PM Waiman Long <llong@...hat.com> wrote:
>
>
> On 4/14/25 2:26 PM, Michal Koutný wrote:
> > Hello.
> >
> > On Mon, Apr 14, 2025 at 04:28:41PM +0000, "T.J. Mercier" <tjmercier@...gle.com> wrote:
> >> Add cgroup v1 parameter parsing to the cpuset filesystem type so that it
> >> works like the cgroup filesystem type:
> > Nothing against 'cpuset_v2_mode' for the cpuset_fs_type (when it's
> > available on cgroup v1) but isn't it too benevolent reusing all of
> > cgroup1_fs_parameters? AFAICS, this would allow overriding release agent
> > also for cpuset fs hierarchies among other options from
> > cgroup1_fs_parameters.
> >
> > (This would likely end up with a separate .parse_param callback but I
> > think that's better than adding so many extra features to cpuset fs.)
>
> I concur. It should be a separate cpuset_fs_parameters() to handle it
> instead of reusing cgroup1_fs_parameters() to allow so many other maybe
> irrelevant cgroup1 parameters.
>
> Cheers,
> Longman

Hi Michal and Longman,

Yes, that's fair. I'll send a v2 tomorrow.

Thanks,
T.J.