On Mon, Jun 10, 2019 at 07:19:03PM +0530, Aarushi Mehta wrote:
> +static bool qemu_luring_poll_cb(void *opaque)
> +{
> +    LuringState *s = opaque;
> +    struct io_uring_cqe *cqes;
> +
> +    if (io_uring_peek_cqe(&s->ring, &cqes) == 0) {
> +        if (!cqes) {
> +            qemu_luring_process_completions_and_submit(s);
> +            return true;
> +        }

Is this logic inverted?  We have a completion when cqes != NULL.