+ mm-mempolicy-fix-numa_interleave_hit-counter.patch added to -mm tree

+ mm-mempolicy-fix-numa_interleave_hit-counter.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter
has been added to the -mm tree.  Its filename is
     mm-mempolicy-fix-numa_interleave_hit-counter.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-mempolicy-fix-numa_interleave_hit-counter.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-mempolicy-fix-numa_interleave_hit-counter.patch

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------------------------------------------------------
From: Andrey Ryabinin <aryabinin@virtuozzo.com>
Subject: mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter

3a321d2a3dde81214 ("mm: change the call sites of numa statistics items")
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.

Link: http://lkml.kernel.org/r/20171003191003.8573-1-aryabinin@virtuozzo.com
Fixes: 3a321d2a3dde ("mm: change the call sites of numa statistics items")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Kemi Wang <kemi.wang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mempolicy.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff -puN mm/mempolicy.c~mm-mempolicy-fix-numa_interleave_hit-counter mm/mempolicy.c
--- a/mm/mempolicy.c~mm-mempolicy-fix-numa_interleave_hit-counter
+++ a/mm/mempolicy.c
@@ -1920,8 +1920,11 @@ static struct page *alloc_page_interleav
 	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) {
+		preempt_disable();
+		__inc_numa_state(page_zone(page), NUMA_INTERLEAVE_HIT);
+		preempt_enable();
+	}
 	return page;
 }
 
_

Patches currently in -mm which might be from aryabinin@virtuozzo.com are

mm-mempolicy-fix-numa_interleave_hit-counter.patch
kcov-remove-pointless-current-=-null-check.patch