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UPSTREAM: mm: memcontrol: set the correct memcg swappiness restriction

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Since commit c843966c55 ("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: c843966c55 ("mm: allow swappiness that prefers reclaiming anon over the file workingset")
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Bug: 275726149
(cherry picked from commit 37bc3cb9bb)
Change-Id: If6a46ebe5313ae0f5e75917adb6ca852c8daa6e6
Signed-off-by: Carlos Galo <carlosgalo@google.com>
This commit is contained in:
Baolin Wang 2021-09-02 14:55:53 -07:00 • committed by Carlos Galo
commit b7b3a636ad
1 changed files with 1 additions and 1 deletions
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2
mm/memcontrol.c
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@ -4206,7 +4206,7 @@ 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 (css->parent)