diff --git a/mm/filemap.c b/mm/filemap.c
index bc943867d68c..23edccecadb0 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1890,6 +1890,7 @@ EXPORT_SYMBOL(generic_file_read_iter);
  * page_cache_read - adds requested page to the page cache if not already there
  * @file:	file to read
  * @offset:	page index
+ * @gfp_mask:	memory allocation flags
  *
  * This adds the requested page to the page cache if it isn't already there,
  * and schedules an I/O to read in its contents from disk.