From: zhong jiang <zhongjiang@xxxxxxxxxx>
when clear_page_mlock call, we had finish the page isolate successfully,
but it fails to increase the UNEVICTABLE_PGMUNLOCKED account.
The patch add the event account when successful page isolation.
Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
mm/mlock.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/mlock.c b/mm/mlock.c
index c483c5c..941930b 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -64,6 +64,7 @@ void clear_page_mlock(struct page *page)
-hpage_nr_pages(page));
count_vm_event(UNEVICTABLE_PGCLEARED);
if (!isolate_lru_page(page)) {
+ count_vm_event(UNEVICTABLE_PGMUNLOCKED);
putback_lru_page(page);
} else {
/*
--
1.8.3.1
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