vdev_indirect_mapping_open
vdev->v_mapping = vdev_indirect_mapping_open(spa,
vdev_indirect_mapping_open(mos,
extern vdev_indirect_mapping_t *vdev_indirect_mapping_open(objset_t *os,
vdev_indirect_mapping_open(mos, scip->scip_next_mapping_object);
vdev_indirect_mapping_t *vim = vdev_indirect_mapping_open(os, object);
vdev_indirect_mapping_open(mos, vic->vic_mapping_object);
vd->vdev_indirect_mapping = vdev_indirect_mapping_open(
vd->vdev_indirect_mapping = vdev_indirect_mapping_open(