first async IO code drop
diff --git a/fio.1 b/fio.1
index 50fd1a6..608ae4e 100644
--- a/fio.1
+++ b/fio.1
@@ -604,7 +604,12 @@
options.
.TP
.B gfapi
-Using Glusterfs libgfapi to direct access to Glusterfs volumes without
+Using Glusterfs libgfapi sync interface to direct access to Glusterfs volumes without
+having to go through FUSE. This ioengine defines engine specific
+options.
+.TP
+.B gfapi_async
+Using Glusterfs libgfapi async interface to direct access to Glusterfs volumes without
having to go through FUSE. This ioengine defines engine specific
options.
.RE