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| author |   Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2019-09-20 11:25:43 +0300 |
|---|---|---|
| committer |   John Snow <jsnow@redhat.com> | 2019-10-17 17:02:32 -0400 |
| commit | d2c3080e41fd2c9bc36c996cc9d33804462ba803 (patch) | |
| tree | faa16eec6452d036d5762ca0329a4ecdcb0b1ab2 /scripts/qapi/source.py | |
| parent | block/dirty-bitmap: return int from bdrv_remove_persistent_dirty_bitmap (diff) | |
| download | qemu-d2c3080e41fd2c9bc36c996cc9d33804462ba803.tar.xz qemu-d2c3080e41fd2c9bc36c996cc9d33804462ba803.zip | |
block/qcow2: proper locking on bitmap add/remove paths
qmp_block_dirty_bitmap_add and do_block_dirty_bitmap_remove do acquire
aio context since 0a6c86d024c52b. But this is not enough: we also must
lock qcow2 mutex when access in-image metadata. Especially it concerns
freeing qcow2 clusters.
To achieve this, move qcow2_can_store_new_dirty_bitmap and
qcow2_remove_persistent_dirty_bitmap to coroutine context.
Since we work in coroutines in correct aio context, we don't need
context acquiring in blockdev.c anymore, drop it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20190920082543.23444-4-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'scripts/qapi/source.py')
0 files changed, 0 insertions, 0 deletions