[RFC] memcg: Add swappiness to cgroup2

Hui Zhu
2019-12-25T05:37:12Z

Even if cgroup2 has swap.max, swappiness is still a very useful config.
This commit add swappiness to cgroup2.

Signed-off-by: Hui Zhu <teawaterz@linux.alibaba.com>
---
mm/memcontrol.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c5b5f74..e966396 100644
--- 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 */
};

--
2.7.4