1 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/aio.h b/include/linux/aio.h
index 60def658b246..0decf66117c1 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -24,7 +24,12 @@ struct kioctx;
 #define KIOCB_SYNC_KEY          (~0U)
 
 /* ki_flags bits */
-#define KIF_LOCKED              0
+/*
+ * This may be used for cancel/retry serialization in the future, but
+ * for now it's unused and we probably don't want modules to even
+ * think they can use it.
+ */
+/* #define KIF_LOCKED           0 */
 #define KIF_KICKED              1
 #define KIF_CANCELLED           2