Federico Vaga authored 12 years ago and Alessandro Rubini committed 12 years ago

This patch renames ZIO_CONTROL_SIZE to __ZIO_CONTROL_SIZE and it
introduces the function zio_control_size(chan).

At a future time, the function will return a channel-dependent value,
when we implement TLV to extend the control structure.

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>