Add iodepth_batch_complete control

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/options.c b/options.c
index b398695..18787f8 100644
--- a/options.c
+++ b/options.c
@@ -612,6 +612,7 @@
 	},
 	{
 		.name	= "iodepth_batch",
+		.alias	= "iodepth_batch_submit",
 		.type	= FIO_OPT_INT,
 		.off1	= td_var_offset(iodepth_batch),
 		.help	= "Number of IO to submit in one go",
@@ -620,6 +621,15 @@
 		.def	= "1",
 	},
 	{
+		.name	= "iodepth_batch_complete",
+		.type	= FIO_OPT_INT,
+		.off1	= td_var_offset(iodepth_batch_complete),
+		.help	= "Number of IO to retrieve in one go",
+		.parent	= "iodepth",
+		.minval	= 0,
+		.def	= "1",
+	},
+	{
 		.name	= "iodepth_low",
 		.type	= FIO_OPT_INT,
 		.off1	= td_var_offset(iodepth_low),