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Message-Id: <20201205130224.81607-3-songmuchun@bytedance.com>
Date: Sat, 5 Dec 2020 21:02:17 +0800
From: Muchun Song <songmuchun@...edance.com>
To: gregkh@...uxfoundation.org, rafael@...nel.org, adobriyan@...il.com,
akpm@...ux-foundation.org, hannes@...xchg.org, mhocko@...nel.org,
vdavydov.dev@...il.com, hughd@...gle.com, will@...nel.org,
guro@...com, rppt@...nel.org, tglx@...utronix.de, esyr@...hat.com,
peterx@...hat.com, krisman@...labora.com, surenb@...gle.com,
avagin@...nvz.org, elver@...gle.com, rdunlap@...radead.org,
iamjoonsoo.kim@....com
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-mm@...ck.org, cgroups@...r.kernel.org,
Muchun Song <songmuchun@...edance.com>
Subject: [PATCH 2/9] mm: memcontrol: fix NR_ANON_THPS account
The unit of NR_ANON_THPS is HPAGE_PMD_NR already. So it should inc/dec
by one rather than nr_pages.
Fixes: 468c398233da ("mm: memcontrol: switch to native NR_ANON_THPS counter")
Signed-off-by: Muchun Song <songmuchun@...edance.com>
---
mm/memcontrol.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 22d9bd688d6d..695dedf8687a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5634,10 +5634,8 @@ static int mem_cgroup_move_account(struct page *page,
__mod_lruvec_state(from_vec, NR_ANON_MAPPED, -nr_pages);
__mod_lruvec_state(to_vec, NR_ANON_MAPPED, nr_pages);
if (PageTransHuge(page)) {
- __mod_lruvec_state(from_vec, NR_ANON_THPS,
- -nr_pages);
- __mod_lruvec_state(to_vec, NR_ANON_THPS,
- nr_pages);
+ __dec_lruvec_state(from_vec, NR_ANON_THPS);
+ __inc_lruvec_state(to_vec, NR_ANON_THPS);
}
}
--
2.11.0
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