EXPLICIT OPEN, IMPLICIT OPEN or CLOSED, is limited by this value.
If this value is 0, there is no limit.
+If the host attempts to exceed this limit, the driver should report this error
+with BLK_STS_ZONE_ACTIVE_RESOURCE, which user space may see as the EOVERFLOW
+errno.
+
max_open_zones (RO)
-------------------
For zoned block devices (zoned attribute indicating "host-managed" or
EXPLICIT OPEN or IMPLICIT OPEN, is limited by this value.
If this value is 0, there is no limit.
+If the host attempts to exceed this limit, the driver should report this error
+with BLK_STS_ZONE_OPEN_RESOURCE, which user space may see as the ETOOMANYREFS
+errno.
+
max_sectors_kb (RW)
-------------------
This is the maximum number of kilobytes that the block layer will allow