1 files changed, 5 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c
index 5616661eac01..b3e8f14c568a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -539,6 +539,11 @@ void __init __weak thread_info_cache_init(void)
  */
 static void __init mm_init(void)
 {
+	/*
+	 * page_cgroup requires countinous pages as memmap
+	 * and it's bigger than MAX_ORDER unless SPARSEMEM.
+	 */
+	page_cgroup_init_flatmem();
 	mem_init();
 	kmem_cache_init();
 	vmalloc_init();