1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index d84feb7bdbf..ddadb4defe0 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -11,6 +11,7 @@
 #include <linux/rwsem.h>
 #include <linux/completion.h>
 #include <linux/cpumask.h>
+#include <linux/page-debug-flags.h>
 #include <asm/page.h>
 #include <asm/mmu.h>
 
@@ -174,6 +175,9 @@ struct vm_area_struct {
 #ifdef CONFIG_NUMA
         struct mempolicy *vm_policy;    /* NUMA policy for the VMA */
 #endif
+#ifdef CONFIG_WANT_PAGE_DEBUG_FLAGS
+        unsigned long debug_flags;      /* Use atomic bitops on this */
+#endif
 };
 
 struct core_thread {