|G_WITHER_GEOM(9)||Kernel Developer's Manual||G_WITHER_GEOM(9)|
destroy geom and related providers and consumers when you
get a chance
g_geom *gp, int
function tells GEOM that geom gp is to be destroyed.
GEOM sets an error on each provider of the given geom (in the orphaning
process) and waits for a chance to destroy the geom. If the access count of
any possessed consumer goes to 0, the consumer will be detached and
destroyed automatically. If the last consumer attached to any possessed
provider will be detached, the provider will be destroyed. If there are no
more providers nor consumers, the geom will be destroyed.
This is an automatic “garbage
collect” to avoid duplicated code in all classes. Before it is
called, field softc should be disposed of and set to
NULL. Note that the
function gives no guarantee that the geom will be immediately destroyed,
mostly because the access counts of the geom's consumers and providers may
not be 0. That is why calling this function for every geom from a given
class is not enough to be sure that the class can be unloaded.
The argument error must be nonzero.
The topology lock has to be held.
This manual page was written by Pawel Jakub Dawidek <pjd@FreeBSD.org>.
|January 16, 2004||Debian|