Commit 37bc3cb9 authored by Baolin Wang's avatar Baolin Wang Committed by Linus Torvalds
Browse files

mm: memcontrol: set the correct memcg swappiness restriction 

Since commit c843966c ("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@linux.alibaba.com


Fixes: c843966c ("mm: allow swappiness that prefers reclaiming anon over the file workingset")
Signed-off-by: default avatarBaolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 55a68c82

mm/memcontrol.c

+1 −1
Original line number Diff line number Diff line
@@ -4062,7 +4062,7 @@ static int mem_cgroup_swappiness_write(struct cgroup_subsys_state *css, 
{

	struct mem_cgroup *memcg = mem_cgroup_from_css(css);



	if (val > 100)

	if (val > 200)

		return -EINVAL;



	if (!mem_cgroup_is_root(memcg))