Introduce disc_mtx to protect the global softc list in if_disc.

Since there are two destroy paths for if_disc interfaces --
module unload and cloan interface destroy, create a new utility
function disc_destroy(), which is callded on a softc after it
has been removed from the global softc list; the cloaner and
module unload entry paths will both remove it before calling
disc_destroy().

Reviewed by:	pjd

0 files changed, 0 insertions, 0 deletions