Vladimir Sementsov-Ogievskiy d1a764d126 block: introduce BDRV_REQ_NO_WAIT flag
Add flag to make serialising request no wait: if there are conflicting
requests, just return error immediately. It's will be used in upcoming
preallocate filter.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20201021145859.11201-7-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2020-12-18 12:35:55 +01:00
..
2020-10-09 07:08:20 +02:00
2020-12-18 12:35:55 +01:00
2020-10-02 15:46:40 +02:00
2020-12-11 17:52:39 +01:00