ddt_histogram
zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
bcopy(ddt->ddt_histogram, &ddt->ddt_histogram_cache,
sizeof (ddt->ddt_histogram));
&ddt->ddt_histogram[type][class]));
&ddt->ddt_histogram[type][class], tx) == 0);
ddh = &ddt->ddt_histogram[dde->dde_type][dde->dde_class];
&ddt->ddt_histogram[type][class], tx) == 0);
bcopy(ddt->ddt_histogram, &ddt->ddt_histogram_cache,
sizeof (ddt->ddt_histogram));
ASSERT(ddt_histogram_empty(&ddt->ddt_histogram[type][class]));
ddt_histogram_t ddt_histogram[DDT_TYPES][DDT_CLASSES];