destroy() callback

Called when a node is destroyed

Synopsis:

#include <sys/pmm.h>

void destroy(void *data)

libc

This function is called when a node is destroyed:

data: Policy specific data returned by the create() function when the node is created.

The destroy() function is called when the last client reference to an unlinked node is removed:

during an unlink operation -- if there are no client references when the node is unlinked
during the close operation when the last client detaches and the node has already been unlinked.

This function cleans up any policy specific state for this node, and free any data allocated for it.