From: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Subject: mm: memcontrol: set the correct memcg swappiness restriction
Since commit c843966c556d ("mm: allow swappiness that prefers reclaiming
anon over the file workingset") has expended the swappiness value to make
swap to be preferred in some systems. We should also change the memcg
swappiness restriction to allow memcg swap-preferred.
Link: https://lkml.kernel.org/r/d77469b90c45c49953ccbc51e54a1d465bc18f70.1627626255.git.baolin.wang@xxxxxxxxxxxxxxxxx
Fixes: c843966c556d ("mm: allow swappiness that prefers reclaiming anon over the file workingset")
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memcontrol.c~mm-memcontrol-set-the-correct-memcg-swappiness-restriction
+++ a/mm/memcontrol.c
@@ -4062,7 +4062,7 @@ static int mem_cgroup_swappiness_write(s
{
struct mem_cgroup *memcg = mem_cgroup_from_css(css);
- if (val > 100)
+ if (val > 200)
return -EINVAL;
if (!mem_cgroup_is_root(memcg))
_
