Make 'loops' honor full write+verify loops

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/fio.h b/fio.h
index d28f8ce..f688084 100644
--- a/fio.h
+++ b/fio.h
@@ -240,6 +240,7 @@
 	 */
 	uint64_t io_issues[DDIR_RWDIR_CNT];
 	uint64_t io_issue_bytes[DDIR_RWDIR_CNT];
+	uint64_t loops;
 
 	/*
 	 * Completions