dnlc_dir_add_space
caching = (dnlc_dir_add_space(dcap, extra,
(void) dnlc_dir_add_space(dcap, extra,
(void) dnlc_dir_add_space(dcap, extra + ep->d_reclen,
(void) dnlc_dir_add_space(dcap, ep->d_reclen,
caching = (dnlc_dir_add_space(dcap, extra,
dcret_t dnlc_dir_add_space(dcanchor_t *dcap, uint_t len, uint64_t handle);