Eric Blake f061656cc3 nbd: Implement client use of NBD FAST_ZERO
The client side is fairly straightforward: if the server advertised
fast zero support, then we can map that to BDRV_REQ_NO_FALLBACK
support.  A server that advertises FAST_ZERO but not WRITE_ZEROES
is technically broken, but we can ignore that situation as it does
not change our behavior.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190823143726.27062-4-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2019-09-05 16:03:26 -05:00
..
2019-08-16 16:43:46 +01:00
2019-08-19 17:13:26 +02:00
2019-08-19 17:13:26 +02:00
2019-08-19 17:13:26 +02:00
2019-09-03 14:55:35 +02:00
2019-08-19 17:13:26 +02:00