diff --git a/Documentation/core-api/mm-api.rst b/Documentation/core-api/mm-api.rst
index aabdd3cba58e..4df7d5edbee5 100644
--- a/Documentation/core-api/mm-api.rst
+++ b/Documentation/core-api/mm-api.rst
@@ -73,6 +73,7 @@ Readahead
 Writeback
 ---------
 
+.. kernel-doc:: include/linux/writeback.h
 .. kernel-doc:: mm/page-writeback.c
    :export: