block: Don't poll in bdrv_set_aio_context()

The explicit aio_poll() call in bdrv_set_aio_context() was added in
commit c2b6428d388 as a workaround for bdrv_drain() failing to achieve
to actually quiesce everything (specifically the NBD client code to
switch AioContext).

Now that the NBD client has been fixed to complete this operation during
bdrv_drain(), we don't need the workaround any more.

It was wrong anyway: aio_poll() must always be run in the home thread of
the AioContext.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

0 files changed, 0 insertions, 0 deletions