c
// Assuming a channel_free function exists
void channel_free(struct vmbus_channel *channel) {
    if (channel->ringbuffer_page) {
        __free_pages(channel->ringbuffer_page, channel->ringbuffer_order);
    }
    // ... free other channel resources ...
    kfree(channel);  // or appropriate free mechanism for channel
}

void vmbus_free_ring(struct vmbus_channel *channel) {
    hv_ringbuffer_cleanup(&channel->outbound);
    hv_ringbuffer_cleanup(&channel->inbound);
    // Do NOT free channel->ringbuffer_page here. Defer it to channel_free.
}
