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-rw-r--r--mm/huge_memory.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 892d8a17a7e5..f4f6041176a4 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1143,6 +1143,7 @@ static void __split_huge_page_refcount(struct page *page)
int i;
unsigned long head_index = page->index;
struct zone *zone = page_zone(page);
+ int zonestat;
/* prevent PageLRU to go away from under us, and freeze lru stats */
spin_lock_irq(&zone->lru_lock);
@@ -1207,6 +1208,15 @@ static void __split_huge_page_refcount(struct page *page)
__dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES);
__mod_zone_page_state(zone, NR_ANON_PAGES, HPAGE_PMD_NR);
+ /*
+ * A hugepage counts for HPAGE_PMD_NR pages on the LRU statistics,
+ * so adjust those appropriately if this page is on the LRU.
+ */
+ if (PageLRU(page)) {
+ zonestat = NR_LRU_BASE + page_lru(page);
+ __mod_zone_page_state(zone, zonestat, -(HPAGE_PMD_NR-1));
+ }
+
ClearPageCompound(page);
compound_unlock(page);
spin_unlock_irq(&zone->lru_lock);