update_stat64
if (update_stat64(stats, DM_NBYTESREAD, kiop->nread) != 0) {
if (update_stat64(stats, DM_NBYTESWRITTEN, kiop->nwritten)
if (update_stat64(stats, DM_NREADOPS, kiop->reads) != 0) {
if (update_stat64(stats, DM_NWRITEOPS, kiop->writes) != 0) {
static int update_stat64(nvlist_t *stats, char *attr,