tree af049079ddeebaa8d491f1344c6f56e6269d7b05
parent d63b4c93e30915def5afabdb48134f5238ee793d
author Eric Blake <eblake@redhat.com> 1518553612 -0600
committer Kevin Wolf <kwolf@redhat.com> 1520012347 +0100

qcow2: Switch to .bdrv_co_block_status()

We are gradually moving away from sector-based interfaces, towards
byte-based.  Update the qcow2 driver accordingly.

For now, we are ignoring the 'want_zero' hint.  However, it should
be relatively straightforward to honor the hint as a way to return
larger *pnum values when we have consecutive clusters with the same
data/zero status but which differ only in having non-consecutive
mappings.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>