Merge branch 'zbd'
* zbd:
Add scripts for testing the fio zoned block device support code
Add support for resetting zones periodically
Make it possible to limit the number of open zones
Collect and show zone reset statistics
Add support for zoned block devices
Add two assert statements in mark_random_map()
Pass offset and buffer length explicitly to mark_random_map()
Introduce the io_u.post_submit callback function pointer
Add the zonemode job option
Add the 'zbd' debug level
configure: Add <linux/blkzoned.h> test