1 files changed, 3 insertions, 0 deletions

diff --git a/mm/sparse.c b/mm/sparse.c
index 1c91f0d3f6ab..3194ec414728 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -481,6 +481,9 @@ void __init sparse_init(void)
         struct page **map_map;
 #endif
 
+        /* see include/linux/mmzone.h 'struct mem_section' definition */
+        BUILD_BUG_ON(!is_power_of_2(sizeof(struct mem_section)));
+
         /* Setup pageblock_order for HUGETLB_PAGE_SIZE_VARIABLE */
         set_pageblock_order();