Re: [Qemu-devel] [PATCH v2 05/11] virtio-blk: Don't handle output when there is "device IO" op blocker

[Paolo Bonzini <pbonzini@redhat.com>]

On 13/05/2015 19:28, Fam Zheng wrote:
> +static void virtio_blk_data_plane_pause(VirtIOBlock *vblk)
> +{
> +    VirtIOBlockDataPlane *s = vblk->dataplane;
> +
> +    event_notifier_test_and_clear(&s->host_notifier);
> +    aio_set_event_notifier(s->ctx, &s->host_notifier, NULL);
> +}
> +
> +static void handle_notify(EventNotifier *e);
> +static void virtio_blk_data_plane_resume(VirtIOBlock *vblk)
> +{
> +    VirtIOBlockDataPlane *s = vblk->dataplane;
> +
> +    aio_set_event_notifier(s->ctx, &s->host_notifier, handle_notify);
> +
> +    event_notifier_set(&s->host_notifier);
> +}

Perhaps add a note that these are called under aio_context_acquire?

Paolo