Re: [PATCH 2/2] cgroup: get the wrong css for css_alloc() during cgroup_init_subsys()

[Tejun Heo]

On Sat, Nov 27, 2021 at 02:59:19PM +0000, Wei Yang wrote:
> css_alloc() needs the parent css, while cgroup_css() gets current
> cgropu's css. So we are getting the wrong css during
> cgroup_init_subsys().
> 
> Fortunately, cgrp_dfl_root.cgrp's css is not set yet, so the value we
> pass to css_alloc() doesn't harm to the system.
> 
> Let's pass NULL directly during init, since we know there is no parent
> yet.
> 
> Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>

Applied to cgroup/for-5.17 w/ minor description adjustment.

Thanks.

-- 
tejun