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From: Baolin Wang <baolin.wang@linux.alibaba.com>
To: akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org,
	vdavydov.dev@gmail.com
Cc: baolin.wang@linux.alibaba.com, cgroups@vger.kernel.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH] mm: memcontrol: Set the correct memcg swappiness restriction
Date: Fri, 30 Jul 2021 14:26:35 +0800	[thread overview]
Message-ID: <d77469b90c45c49953ccbc51e54a1d465bc18f70.1627626255.git.baolin.wang@linux.alibaba.com> (raw)

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.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
 mm/memcontrol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6580c23..988fc94 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4046,7 +4046,7 @@ 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))
-- 
1.8.3.1


             reply	other threads:[~2021-07-30  6:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30  6:26 Baolin Wang [this message]
2021-07-30  6:39 ` Michal Hocko
2021-08-03 15:20   ` Vlastimil Babka
2021-08-03 15:45     ` Baolin Wang
2021-08-03 20:25       ` Andrew Morton

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