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mm: memcontrol: correct the NR_ANON_THPS counter of hierarchical memcg

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memcg_page_state will get the specified number in hierarchical memcg, It
should multiply by HPAGE_PMD_NR rather than an page if the item is
NR_ANON_THPS.

[akpm@linux-foundation.org: fix printk warning]
[akpm@linux-foundation.org: use u64 cast, per Michal]

Fixes: 468c398233 ("mm: memcontrol: switch to native NR_ANON_THPS counter")
Signed-off-by: zhongjiang-ali <zhongjiang-ali@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Link: https://lkml.kernel.org/r/1603722395-72443-1-git-send-email-zhongjiang-ali@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
zhongjiang-ali 2020-11-01 17:07:30 -08:00 committed by Linus Torvalds
parent 79aa925bf2
commit 7de2e9f195
1 changed files with 8 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

10
mm/memcontrol.c
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@ -4110,11 +4110,17 @@ static int memcg_stat_show(struct seq_file *m, void *v)
(u64)memsw * PAGE_SIZE);
for (i = 0; i < ARRAY_SIZE(memcg1_stats); i++) {
unsigned long nr;
if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
continue;
nr = memcg_page_state(memcg, memcg1_stats[i]);
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
if (memcg1_stats[i] == NR_ANON_THPS)
nr *= HPAGE_PMD_NR;
#endif
seq_printf(m, "total_%s %llu\n", memcg1_stat_names[i],
(u64)memcg_page_state(memcg, memcg1_stats[i]) *
PAGE_SIZE);
(u64)nr * PAGE_SIZE);
}
for (i = 0; i < ARRAY_SIZE(memcg1_events); i++)