| commit | 38475269d4d9efcc5f1a5aae4834d165248ea13d | |
| author | Kevin Wolf <kwolf@redhat.com> | |
| Mon, 6 May 2019 17:18:01 +0000 (6 19:18 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Mon, 20 May 2019 15:08:56 +0000 (20 17:08 +0200) | ||
| tree | 8b882ecc72c392752bff349221e72e97b00f9447 | treesnapshot (tar.gz zip) |
| parent | 7e2f096a823f75ca3f1df1811c406b46254587fd | commitdiff |
block: Implement .(can_)set_aio_ctx for BlockBackend
bdrv_try_set_aio_context() currently fails if a BlockBackend is attached
to a node because it doesn't implement the BdrvChildRole callbacks for
AioContext management.
We can allow changing the AioContext of monitor-owned BlockBackends as
long as no device is attached to them.
When setting the AioContext of the root node of a BlockBackend, we now
need to pass blk->root as an ignored child because we don't want the
root node to recursively call back into BlockBackend and execute
blk_do_set_aio_context() a second time.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
bdrv_try_set_aio_context() currently fails if a BlockBackend is attached
to a node because it doesn't implement the BdrvChildRole callbacks for
AioContext management.
We can allow changing the AioContext of monitor-owned BlockBackends as
long as no device is attached to them.
When setting the AioContext of the root node of a BlockBackend, we now
need to pass blk->root as an ignored child because we don't want the
root node to recursively call back into BlockBackend and execute
blk_do_set_aio_context() a second time.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| block/block-backend.c | diffblobblamehistory |