Re: [PATCH 2/2] memcg: periodically flush the memcg stats

[Hillf Danton <hdanton@xxxxxxxx>]

On Thu,  3 Jun 2021 18:56:40 -0700 Shakeel Butt wrote:
>  
> +static void flush_memcg_stats(struct work_struct *w)
> +{
> +	cgroup_rstat_flush(root_mem_cgroup->css.cgroup);
> +	schedule_delayed_work(&stats_flush, round_jiffies(2UL*HZ));
> +}

Given flush may block, the unbound wq is what you need.

	queue_delayed_work(system_unbound_wq, &stats_flush, 2 * HZ);