- * @mutex: Protects the modifiable members in this structure (refcount).
- * @zone_size: size of a single zone in units of 512 bytes
+ * @max_open_zones: global limit on the number of simultaneously opened
+ * sequential write zones. A zero value means unlimited open zones,
+ * and that open zones will not be tracked in the open_zones array.
+ * @mutex: Protects the modifiable members in this structure (refcount and
+ * num_open_zones).
+ * @zone_size: size of a single zone in bytes.
+ * @sectors_with_data: total size of data in all zones in units of 512 bytes
+ * @wp_sectors_with_data: total size of data in zones with write pointers in
+ * units of 512 bytes