ddt_get_dedup_histogram(spa, ddh_total);
ddt_histogram_stat(dds_total, ddh_total);
kmem_free(ddh_total, sizeof (ddt_histogram_t));
ddt_get_dedup_histogram(spa, ddh_total);
ddt_histogram_stat(dds_total, ddh_total);
kmem_free(ddh_total, sizeof (ddt_histogram_t));