io_uring: add support for zone appends when using ZBD

Add a new write mode 'zone_append' for io_uring_cmd that uses zone_appends instead of
writes when ZBD is enabled. Zone appends are issued to the start of
zones.

Signed-off-by: Krijn Doekemeijer <krijn.doekemeijer@wdc.com>
7 files changed