Function ddt_sync_table

freebsd/contrib/openzfs/module/zfs/ddt.c:1073–1115

}

static void
ddt_sync_table(ddt_t *ddt, dmu_tx_t *tx, uint64_t txg)
{
	spa_t *spa = ddt->ddt_spa;
	ddt_entry_t *dde;
	void *cookie = NULL;

	if (avl_numnodes(&ddt->ddt_tree) == 0)
		return;

	ASSERT(spa->spa_uberblock.ub_version >= SPA_VERSION_DEDUP);

	if (spa->spa_ddt_stat_object == 0) {
		spa->spa_ddt_stat_object = zap_create_link(ddt->ddt_os,
		    DMU_OT_DDT_STATS, DMU_POOL_DIRECTORY_OBJECT,
		    DMU_POOL_DDT_STATS, tx);
	}

	while ((dde = avl_destroy_nodes(&ddt->ddt_tree, &cookie)) != NULL) {
		ddt_sync_entry(ddt, dde, tx, txg);
		ddt_free(dde);
	}

	for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
		uint64_t add, count = 0;
		for (enum ddt_class class = 0; class < DDT_CLASSES; class++) {
			if (ddt_object_exists(ddt, type, class)) {
				ddt_object_sync(ddt, type, class, tx);
				VERIFY(ddt_object_count(ddt, type, class,
				    &add) == 0);
				count += add;
			}
		}
		for (enum ddt_class class = 0; class < DDT_CLASSES; class++) {
			if (count == 0 && ddt_object_exists(ddt, type, class))
				ddt_object_destroy(ddt, type, class, tx);
		}
	}

	bcopy(ddt->ddt_histogram, &ddt->ddt_histogram_cache,
	    sizeof (ddt->ddt_histogram));
	spa->spa_dedup_dspace = ~0ULL;
}

void
ddt_sync(spa_t *spa, uint64_t txg)