thp: fix anon memory statistics with transparent hugepages

Count each transparent hugepage as HPAGE_PMD_NR pages in the LRU
statistics, so the Active(anon) and Inactive(anon) statistics in
/proc/meminfo are correct.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index a1bb59d4c9d0..f4ea3410fb4d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1091,7 +1091,7 @@ unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
                 case 0:
                         list_move(&page->lru, dst);
                         mem_cgroup_del_lru(page);
-                        nr_taken++;
+                        nr_taken += hpage_nr_pages(page);
                         break;
                 case -EBUSY:
                         /* we don't affect global LRU but rotate in our LRU */