Re: [RFC] memcg: Add swappiness to cgroup2

Andrew Morton
2019-12-31T23:16:24Z

On Wed, 25 Dec 2019 13:36:48 +0800 Hui Zhu <teawater@gmail.com> wrote:

> Even if cgroup2 has swap.max, swappiness is still a very useful config.
> This commit add swappiness to cgroup2.
>
> ...
>
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -7143,6 +7143,11 @@ static struct cftype swap_files[] = {
> .file_offset = offsetof(struct mem_cgroup, swap_events_file),
> .seq_show = swap_events_show,
> },
> + {
> + .name = "swappiness",
> + .read_u64 = mem_cgroup_swappiness_read,
> + .write_u64 = mem_cgroup_swappiness_write,
> + },
> { } /* terminate */
> };

There should be a Documentation/ update with this?