--- IO-AIO/README	2009/06/27 03:19:27	1.38
+++ IO-AIO/README	2009/08/05 11:53:16	1.39
@@ -633,6 +633,9 @@
         directory changes get written to disc. It works for anything that
         can be opened for read-only, not just directories.
 
+        Future versions of this function might fall back to other methods
+        when "fsync" on the directory fails (such as calling "sync").
+
         Passes 0 when everything went ok, and -1 on error.
 
     aio_group $callback->(...)