Function vmem_destroy1

freebsd/kern/subr_vmem.c:876–904

}

static void
vmem_destroy1(vmem_t *vm)
{
	bt_t *bt;

	/*
	 * Drain per-cpu quantum caches.
	 */
	qc_destroy(vm);

	/*
	 * The vmem should now only contain empty segments.
	 */
	VMEM_LOCK(vm);
	MPASS(vm->vm_nbusytag == 0);

	TAILQ_REMOVE(&vm->vm_seglist, &vm->vm_cursor, bt_seglist);
	while ((bt = TAILQ_FIRST(&vm->vm_seglist)) != NULL)
		bt_remseg(vm, bt);

	if (vm->vm_hashlist != NULL && vm->vm_hashlist != vm->vm_hash0)
		free(vm->vm_hashlist, M_VMEM);

	bt_freetrim(vm, 0);

	VMEM_CONDVAR_DESTROY(vm);
	VMEM_LOCK_DESTROY(vm);
	uma_zfree(vmem_zone, vm);
}

static int
vmem_import(vmem_t *vm, vmem_size_t size, vmem_size_t align, int flags)