diff options
| author | Alberto Garcia <berto@igalia.com> | 2020-10-26 17:58:26 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-10-27 15:26:20 +0100 |
| commit | d40f4a565aa64a1ef1e1ff73caf53d61cac9a67f (patch) | |
| tree | 671c8523f8863d8719707f9cd225f94cf65cba31 /migration/ram.c | |
| parent | 0c8c4895a6a54ffb7209402b183297c80c868873 (diff) | |
qcow2: Report BDRV_BLOCK_ZERO more accurately in bdrv_co_block_status()
If a BlockDriverState supports backing files but has none then any
unallocated area reads back as zeroes.
bdrv_co_block_status() is only reporting this is if want_zero is true,
but this is an inexpensive test and there is no reason not to do it in
all cases.
Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <66fa0914a0e2b727ab6d1b63ca773d7cd29a9a9e.1603731354.git.berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'migration/ram.c')
0 files changed, 0 insertions, 0 deletions