Verify log message

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fio.c b/fio.c
index c33f786..dfda268 100644
--- a/fio.c
+++ b/fio.c
@@ -433,6 +433,8 @@
 	int ret, min_events;
 	unsigned int i;
 
+	dprint(FD_VERIFY, "starting loop\n");
+
 	/*
 	 * sync io first and invalidate cache, to make sure we really
 	 * read from disk.
@@ -570,6 +572,8 @@
 		cleanup_pending_aio(td);
 
 	td_set_runstate(td, TD_RUNNING);
+
+	dprint(FD_VERIFY, "exiting loop\n");
 }
 
 /*