From: "Aneesh Kumar K.V" <redacted>

This adds necessary charge/uncharge calls in the HugeTLB code.  We do
hugetlb cgroup charge in page alloc and uncharge in compound page destructor.

Signed-off-by: Aneesh Kumar K.V <redacted>
---
 mm/hugetlb.c        |   16 +++++++++++++++-
 mm/hugetlb_cgroup.c |    7 +------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index bf79131..4ca92a9 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c

@@ -628,6 +628,8 @@ static void free_huge_page(struct page *page)
 	BUG_ON(page_mapcount(page));
 
 	spin_lock(&hugetlb_lock);
+	hugetlb_cgroup_uncharge_page(hstate_index(h),
+				     pages_per_huge_page(h), page);