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-rw-r--r--zbd.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/zbd.h b/zbd.h
index 64534393..39dc45e3 100644
--- a/zbd.h
+++ b/zbd.h
@@ -50,7 +50,8 @@ struct fio_zone_info {
* zoned_block_device_info - zoned block device characteristics
* @model: Device model.
* @max_open_zones: global limit on the number of simultaneously opened
- * sequential write zones.
+ * 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.