1 files changed, 4 insertions, 0 deletions

diff --git a/mm/cma.h b/mm/cma.h
index 4141887bbfb0..1132d733556d 100644
--- a/mm/cma.h
+++ b/mm/cma.h
@@ -7,6 +7,10 @@ struct cma {
         unsigned long   *bitmap;
         unsigned int order_per_bit; /* Order of pages represented by one bit */
         struct mutex    lock;
+#ifdef CONFIG_CMA_DEBUGFS
+        struct hlist_head mem_head;
+        spinlock_t mem_head_lock;
+#endif
 };
 
 extern struct cma cma_areas[MAX_CMA_AREAS];