g_wither_geom
- destroy geom and related providers and consumers when you get a chance
SYNOPSIS
#include <geom/geom.h> void
g_wither_geom (struct g_geom *gp int error);
DESCRIPTION
The
g_wither_geom ();
function tells GEOM that geom
Fa 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 off and set to
NULL
Note that the
g_wither_geom ();
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.
