diskutil: separate out stats from name

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/diskutil.h b/diskutil.h
index 7207c73..d86e4ec 100644
--- a/diskutil.h
+++ b/diskutil.h
@@ -5,11 +5,7 @@
 
 extern volatile int disk_util_exit;
 
-/*
- * Disk utils as read in /sys/block/<dev>/stat
- */
-struct disk_util_stat {
-	uint8_t name[FIO_DU_NAME_SZ];
+struct disk_util_stats {
 	uint32_t ios[2];
 	uint32_t merges[2];
 	uint64_t sectors[2];
@@ -19,6 +15,14 @@
 	uint64_t msec;
 };
 
+/*
+ * Disk utils as read in /sys/block/<dev>/stat
+ */
+struct disk_util_stat {
+	uint8_t name[FIO_DU_NAME_SZ];
+	struct disk_util_stats s;
+};
+
 struct disk_util_agg {
 	uint32_t ios[2];
 	uint32_t merges[2];