On 06/05/2015 13:23, Fam Zheng wrote: > virtio-blk now listens to op blocker change of the associated block > backend. > > Up on setting op blocker on BLOCK_OP_TYPE_DEVICE_IO: > > non-dataplane: > 1) Set VirtIOBlock.paused > 2) In virtio_blk_handle_output, do nothing if VirtIOBlock.paused > > dataplane: > 1) Clear the host event notifier > 2) In handle_notify, do nothing if VirtIOBlock.paused > > Up on removing the op blocker: > > non-dataplane: > 1) Clear VirtIOBlock.paused > 2) Schedule a BH on the AioContext of the backend, which calls > virtio_blk_handle_output, so that the previous unhandled kicks can > make progress > > dataplane: > 1) Set the host event notifier > 2) Notify the host event notifier so that unhandled events are > processed > > Signed-off-by: Fam Zheng <f...@redhat.com>
Does non-dataplane need to do anything, since it uses iohandlers rather than aio_set_event_notifier_handler? Paolo