applications can enqueue in advance, or dequeue and process. They can
also enqueue in a different order than buffers have been dequeued, and
the driver can *fill* enqueued *empty* buffers in any order. [#f2]_ The
applications can enqueue in advance, or dequeue and process. They can
also enqueue in a different order than buffers have been dequeued, and
the driver can *fill* enqueued *empty* buffers in any order. [#f2]_ The