diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index 0232d983b715..a3094379b579 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -323,6 +323,7 @@ static inline void might_alloc(gfp_t gfp_mask)
 
 /**
  * memalloc_flags_save - Add a PF_* flag to current->flags, save old value
+ * @flags: Flags to add.
  *
  * This allows PF_* flags to be conveniently added, irrespective of current
  * value, and then the old version restored with memalloc_flags_restore().