destroy geom and related providers and consumers when
you get a chance
() function tells GEOM that
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
() 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