[PATCH] mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter

[Andrey Ryabinin]

Commit 3a321d2a3dde separated NUMA counters from zone counters, but
the NUMA_INTERLEAVE_HIT call site wasn't updated to use the new interface.
So alloc_page_interleave() actually increments NR_ZONE_INACTIVE_FILE
instead of NUMA_INTERLEAVE_HIT.

Fix this by using __inc_numa_state() interface to increment
NUMA_INTERLEAVE_HIT.

Fixes: 3a321d2a3dde ("mm: change the call sites of numa statistics items")
Signed-off-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
---
 mm/mempolicy.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 006ba625c0b8..3a18f0a091c4 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1920,8 +1920,13 @@ static struct page *alloc_page_interleave(gfp_t gfp, unsigned order,
 	struct page *page;
 
 	page = __alloc_pages(gfp, order, nid);
-	if (page && page_to_nid(page) == nid)
-		inc_zone_page_state(page, NUMA_INTERLEAVE_HIT);
+	if (page && page_to_nid(page) == nid) {
+		unsigned long flags;
+
+		local_irq_save(flags);
+		__inc_numa_state(page_zone(page), NUMA_INTERLEAVE_HIT);
+		local_irq_restore(flags);
+	}
 	return page;
 }
 
-- 
2.13.6