dlm_set_lockres_owner
dlm_set_lockres_owner(dlm, res, owner);
dlm_set_lockres_owner(dlm, res, target);
dlm_set_lockres_owner(dlm, res, DLM_LOCK_RES_OWNER_UNKNOWN);
dlm_set_lockres_owner(dlm, res, dlm->node_num);
dlm_set_lockres_owner(dlm, res, DLM_LOCK_RES_OWNER_UNKNOWN);