Re: [PATCH v3 08/10] sched/psi: consolidate cgroup_psi()

[Johannes Weiner]

On Wed, Aug 24, 2022 at 04:18:27PM +0800, Chengming Zhou wrote:
> cgroup_psi() can't return psi_group for root cgroup, so we have many
> open code "psi = cgroup_ino(cgrp) == 1 ? &psi_system : cgrp->psi".
> 
> This patch move cgroup_psi() definition to <linux/psi.h>, in which
> we can return psi_system for root cgroup, so can handle all cgroups.
> 
> Signed-off-by: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>