223 	int result;  in compute_sizes()  local
231 	result = uds_compute_volume_index_save_blocks(config, sls->block_size,  in compute_sizes()
233 	if (result != UDS_SUCCESS)  in compute_sizes()
234 		return vdo_log_error_strerror(result, "cannot compute index save size");  in compute_sizes()
435 	int result;  in make_index_save_region_table()  local
461 	result = vdo_allocate_extended(struct region_table, region_count,  in make_index_save_region_table()
464 	if (result != VDO_SUCCESS)  in make_index_save_region_table()
465 		return result;  in make_index_save_region_table()
518 	int result;  in write_index_save_header()  local
522 	result = vdo_allocate(table->encoded_size, u8, "index save data", &buffer);  in write_index_save_header()
523 	if (result != VDO_SUCCESS)  in write_index_save_header()
524 		return result;  in write_index_save_header()
540 	result = uds_write_to_buffered_writer(writer, buffer, offset);  in write_index_save_header()
542 	if (result != UDS_SUCCESS)  in write_index_save_header()
543 		return result;  in write_index_save_header()
551 	int result;  in write_index_save_layout()  local
555 	result = make_index_save_region_table(isl, &table);  in write_index_save_layout()
556 	if (result != UDS_SUCCESS)  in write_index_save_layout()
557 		return result;  in write_index_save_layout()
559 	result = open_region_writer(layout, &isl->header, &writer);  in write_index_save_layout()
560 	if (result != UDS_SUCCESS) {  in write_index_save_layout()
562 		return result;  in write_index_save_layout()
565 	result = write_index_save_header(isl, table, writer);  in write_index_save_layout()
569 	return result;  in write_index_save_layout()
614 	int result;  in discard_index_state_data()  local
619 		result = invalidate_old_save(layout, &layout->index.saves[i]);  in discard_index_state_data()
620 		if (result != UDS_SUCCESS)  in discard_index_state_data()
621 			saved_result = result;  in discard_index_state_data()
625 		return vdo_log_error_strerror(result,  in discard_index_state_data()
636 	int result;  in make_layout_region_table()  local
644 	result = vdo_allocate_extended(struct region_table, region_count,  in make_layout_region_table()
647 	if (result != VDO_SUCCESS)  in make_layout_region_table()
648 		return result;  in make_layout_region_table()
688 	int result;  in write_layout_header()  local
692 	result = vdo_allocate(table->encoded_size, u8, "layout data", &buffer);  in write_layout_header()
693 	if (result != VDO_SUCCESS)  in write_layout_header()
694 		return result;  in write_layout_header()
715 	result = uds_write_to_buffered_writer(writer, buffer, offset);  in write_layout_header()
717 	if (result != UDS_SUCCESS)  in write_layout_header()
718 		return result;  in write_layout_header()
727 	int result;  in write_uds_index_config()  local
730 	result = open_layout_writer(layout, &layout->config, offset, &writer);  in write_uds_index_config()
731 	if (result != UDS_SUCCESS)  in write_uds_index_config()
732 		return vdo_log_error_strerror(result, "failed to open config region");  in write_uds_index_config()
734 	result = uds_write_config_contents(writer, config, layout->super.version);  in write_uds_index_config()
735 	if (result != UDS_SUCCESS) {  in write_uds_index_config()
737 		return vdo_log_error_strerror(result, "failed to write config region");  in write_uds_index_config()
740 	result = uds_flush_buffered_writer(writer);  in write_uds_index_config()
741 	if (result != UDS_SUCCESS) {  in write_uds_index_config()
743 		return vdo_log_error_strerror(result, "cannot flush config writer");  in write_uds_index_config()
752 	int result;  in save_layout()  local
756 	result = make_layout_region_table(layout, &table);  in save_layout()
757 	if (result != UDS_SUCCESS)  in save_layout()
758 		return result;  in save_layout()
760 	result = open_layout_writer(layout, &layout->header, offset, &writer);  in save_layout()
761 	if (result != UDS_SUCCESS) {  in save_layout()
763 		return result;  in save_layout()
766 	result = write_layout_header(layout, table, writer);  in save_layout()
770 	return result;  in save_layout()
775 	int result;  in create_index_layout()  local
778 	result = compute_sizes(config, &sizes);  in create_index_layout()
779 	if (result != UDS_SUCCESS)  in create_index_layout()
780 		return result;  in create_index_layout()
782 	result = vdo_allocate(sizes.save_count, struct index_save_layout, __func__,  in create_index_layout()
784 	if (result != VDO_SUCCESS)  in create_index_layout()
785 		return result;  in create_index_layout()
789 	result = discard_index_state_data(layout);  in create_index_layout()
790 	if (result != UDS_SUCCESS)  in create_index_layout()
791 		return result;  in create_index_layout()
793 	result = write_uds_index_config(layout, config, 0);  in create_index_layout()
794 	if (result != UDS_SUCCESS)  in create_index_layout()
795 		return result;  in create_index_layout()
860 	int result;  in uds_discard_open_chapter()  local
864 	result = find_latest_uds_index_save_slot(layout, &isl);  in uds_discard_open_chapter()
865 	if (result != UDS_SUCCESS)  in uds_discard_open_chapter()
866 		return result;  in uds_discard_open_chapter()
868 	result = open_region_writer(layout, &isl->open_chapter, &writer);  in uds_discard_open_chapter()
869 	if (result != UDS_SUCCESS)  in uds_discard_open_chapter()
870 		return result;  in uds_discard_open_chapter()
872 	result = uds_write_to_buffered_writer(writer, NULL, UDS_BLOCK_SIZE);  in uds_discard_open_chapter()
873 	if (result != UDS_SUCCESS) {  in uds_discard_open_chapter()
875 		return result;  in uds_discard_open_chapter()
878 	result = uds_flush_buffered_writer(writer);  in uds_discard_open_chapter()
880 	return result;  in uds_discard_open_chapter()
885 	int result;  in uds_load_index_state()  local
890 	result = find_latest_uds_index_save_slot(layout, &isl);  in uds_load_index_state()
891 	if (result != UDS_SUCCESS)  in uds_load_index_state()
892 		return result;  in uds_load_index_state()
898 	result = open_region_reader(layout, &isl->open_chapter, &readers[0]);  in uds_load_index_state()
899 	if (result != UDS_SUCCESS)  in uds_load_index_state()
900 		return result;  in uds_load_index_state()
902 	result = uds_load_open_chapter(index, readers[0]);  in uds_load_index_state()
904 	if (result != UDS_SUCCESS)  in uds_load_index_state()
905 		return result;  in uds_load_index_state()
908 		result = open_region_reader(layout, &isl->volume_index_zones[zone],  in uds_load_index_state()
910 		if (result != UDS_SUCCESS) {  in uds_load_index_state()
914 			return result;  in uds_load_index_state()
918 	result = uds_load_volume_index(index->volume_index, readers, isl->zone_count);  in uds_load_index_state()
921 	if (result != UDS_SUCCESS)  in uds_load_index_state()
922 		return result;  in uds_load_index_state()
924 	result = open_region_reader(layout, &isl->index_page_map, &readers[0]);  in uds_load_index_state()
925 	if (result != UDS_SUCCESS)  in uds_load_index_state()
926 		return result;  in uds_load_index_state()
928 	result = uds_read_index_page_map(index->volume->index_page_map, readers[0]);  in uds_load_index_state()
931 	return result;  in uds_load_index_state()
1022 	int result;  in setup_uds_index_save_slot()  local
1026 	result = invalidate_old_save(layout, isl);  in setup_uds_index_save_slot()
1027 	if (result != UDS_SUCCESS)  in setup_uds_index_save_slot()
1028 		return result;  in setup_uds_index_save_slot()
1046 	int result;  in uds_save_index_state()  local
1051 	result = setup_uds_index_save_slot(layout, index->zone_count, &isl);  in uds_save_index_state()
1052 	if (result != UDS_SUCCESS)  in uds_save_index_state()
1053 		return result;  in uds_save_index_state()
1061 	result = open_region_writer(layout, &isl->open_chapter, &writers[0]);  in uds_save_index_state()
1062 	if (result != UDS_SUCCESS) {  in uds_save_index_state()
1064 		return result;  in uds_save_index_state()
1067 	result = uds_save_open_chapter(index, writers[0]);  in uds_save_index_state()
1069 	if (result != UDS_SUCCESS) {  in uds_save_index_state()
1071 		return result;  in uds_save_index_state()
1075 		result = open_region_writer(layout, &isl->volume_index_zones[zone],  in uds_save_index_state()
1077 		if (result != UDS_SUCCESS) {  in uds_save_index_state()
1082 			return result;  in uds_save_index_state()
1086 	result = uds_save_volume_index(index->volume_index, writers, index->zone_count);  in uds_save_index_state()
1089 	if (result != UDS_SUCCESS) {  in uds_save_index_state()
1091 		return result;  in uds_save_index_state()
1094 	result = open_region_writer(layout, &isl->index_page_map, &writers[0]);  in uds_save_index_state()
1095 	if (result != UDS_SUCCESS) {  in uds_save_index_state()
1097 		return result;  in uds_save_index_state()
1100 	result = uds_write_index_page_map(index->volume->index_page_map, writers[0]);  in uds_save_index_state()
1102 	if (result != UDS_SUCCESS) {  in uds_save_index_state()
1104 		return result;  in uds_save_index_state()
1113 	int result;  in load_region_table()  local
1120 	result = uds_read_from_buffered_reader(reader, buffer, sizeof(buffer));  in load_region_table()
1121 	if (result != UDS_SUCCESS)  in load_region_table()
1122 		return vdo_log_error_strerror(result, "cannot read region table header");  in load_region_table()
1140 	result = vdo_allocate_extended(struct region_table, header.region_count,  in load_region_table()
1143 	if (result != VDO_SUCCESS)  in load_region_table()
1144 		return result;  in load_region_table()
1151 		result = uds_read_from_buffered_reader(reader, region_buffer,  in load_region_table()
1153 		if (result != UDS_SUCCESS) {  in load_region_table()
1174 	int result;  in read_super_block_data()  local
1179 	result = vdo_allocate(saved_size, u8, "super block data", &buffer);  in read_super_block_data()
1180 	if (result != VDO_SUCCESS)  in read_super_block_data()
1181 		return result;  in read_super_block_data()
1183 	result = uds_read_from_buffered_reader(reader, buffer, saved_size);  in read_super_block_data()
1184 	if (result != UDS_SUCCESS) {  in read_super_block_data()
1186 		return vdo_log_error_strerror(result, "cannot read region table header");  in read_super_block_data()
1268 	int result;  in verify_sub_index()  local
1274 	result = verify_region(&sil->sub_index, next_block, RL_KIND_INDEX, 0);  in verify_sub_index()
1275 	if (result != UDS_SUCCESS)  in verify_sub_index()
1276 		return result;  in verify_sub_index()
1281 	result = verify_region(&sil->volume, next_block, RL_KIND_VOLUME,  in verify_sub_index()
1283 	if (result != UDS_SUCCESS)  in verify_sub_index()
1284 		return result;  in verify_sub_index()
1290 		result = verify_region(&sil->saves[i].index_save, next_block,  in verify_sub_index()
1292 		if (result != UDS_SUCCESS)  in verify_sub_index()
1293 			return result;  in verify_sub_index()
1310 	int result;  in reconstitute_layout()  local
1313 	result = vdo_allocate(layout->super.max_saves, struct index_save_layout,  in reconstitute_layout()
1315 	if (result != VDO_SUCCESS)  in reconstitute_layout()
1316 		return result;  in reconstitute_layout()
1321 	result = verify_region(&layout->header, next_block++, RL_KIND_HEADER,  in reconstitute_layout()
1323 	if (result != UDS_SUCCESS)  in reconstitute_layout()
1324 		return result;  in reconstitute_layout()
1327 	result = verify_region(&layout->config, next_block++, RL_KIND_CONFIG,  in reconstitute_layout()
1329 	if (result != UDS_SUCCESS)  in reconstitute_layout()
1330 		return result;  in reconstitute_layout()
1332 	result = verify_sub_index(layout, next_block, table);  in reconstitute_layout()
1333 	if (result != UDS_SUCCESS)  in reconstitute_layout()
1334 		return result;  in reconstitute_layout()
1339 	result = verify_region(&layout->seal, next_block + layout->super.volume_offset,  in reconstitute_layout()
1341 	if (result != UDS_SUCCESS)  in reconstitute_layout()
1342 		return result;  in reconstitute_layout()
1355 	int result;  in load_super_block()  local
1359 	result = load_region_table(reader, &table);  in load_super_block()
1360 	if (result != UDS_SUCCESS)  in load_super_block()
1361 		return result;  in load_super_block()
1369 	result = read_super_block_data(reader, layout, table->header.payload);  in load_super_block()
1370 	if (result != UDS_SUCCESS) {  in load_super_block()
1372 		return vdo_log_error_strerror(result, "unknown superblock format");  in load_super_block()
1383 	result = reconstitute_layout(layout, table, first_block);  in load_super_block()
1385 	return result;  in load_super_block()
1392 	int result;  in read_index_save_data()  local
1403 	result = uds_read_from_buffered_reader(reader, buffer, sizeof(buffer));  in read_index_save_data()
1404 	if (result != UDS_SUCCESS)  in read_index_save_data()
1405 		return vdo_log_error_strerror(result, "cannot read index save data");  in read_index_save_data()
1440 	int result;  in reconstruct_index_save()  local
1462 	result = verify_region(&isl->header, next_block++, RL_KIND_HEADER,  in reconstruct_index_save()
1464 	if (result != UDS_SUCCESS)  in reconstruct_index_save()
1465 		return result;  in reconstruct_index_save()
1468 	result = verify_region(&isl->index_page_map, next_block, RL_KIND_INDEX_PAGE_MAP,  in reconstruct_index_save()
1470 	if (result != UDS_SUCCESS)  in reconstruct_index_save()
1471 		return result;  in reconstruct_index_save()
1477 		result = verify_region(&isl->volume_index_zones[z], next_block,  in reconstruct_index_save()
1479 		if (result != UDS_SUCCESS)  in reconstruct_index_save()
1480 			return result;  in reconstruct_index_save()
1486 	result = verify_region(&isl->open_chapter, next_block, RL_KIND_OPEN_CHAPTER,  in reconstruct_index_save()
1488 	if (result != UDS_SUCCESS)  in reconstruct_index_save()
1489 		return result;  in reconstruct_index_save()
1493 	result = verify_region(&isl->free_space, next_block, RL_KIND_EMPTY,  in reconstruct_index_save()
1495 	if (result != UDS_SUCCESS)  in reconstruct_index_save()
1496 		return result;  in reconstruct_index_save()
1511 	int result;  in load_index_save()  local
1514 	result = load_region_table(reader, &table);  in load_index_save()
1515 	if (result != UDS_SUCCESS) {  in load_index_save()
1516 		return vdo_log_error_strerror(result, "cannot read index save %u header",  in load_index_save()
1545 	result = read_index_save_data(reader, isl, table->header.payload);  in load_index_save()
1546 	if (result != UDS_SUCCESS) {  in load_index_save()
1548 		return vdo_log_error_strerror(result,  in load_index_save()
1553 	result = reconstruct_index_save(isl, table);  in load_index_save()
1555 	if (result != UDS_SUCCESS) {  in load_index_save()
1556 		return vdo_log_error_strerror(result, "cannot reconstruct index save %u",  in load_index_save()
1565 	int result;  in load_sub_index_regions()  local
1572 		result = open_region_reader(layout, &isl->index_save, &reader);  in load_sub_index_regions()
1574 		if (result != UDS_SUCCESS) {  in load_sub_index_regions()
1575 			vdo_log_error_strerror(result,  in load_sub_index_regions()
1578 			return result;  in load_sub_index_regions()
1581 		result = load_index_save(isl, reader, j);  in load_sub_index_regions()
1583 		if (result != UDS_SUCCESS) {  in load_sub_index_regions()
1596 	int result;  in verify_uds_index_config()  local
1601 	result = open_layout_reader(layout, &layout->config, offset, &reader);  in verify_uds_index_config()
1602 	if (result != UDS_SUCCESS)  in verify_uds_index_config()
1603 		return vdo_log_error_strerror(result, "failed to open config reader");  in verify_uds_index_config()
1605 	result = uds_validate_config_contents(reader, config);  in verify_uds_index_config()
1606 	if (result != UDS_SUCCESS) {  in verify_uds_index_config()
1608 		return vdo_log_error_strerror(result, "failed to read config region");  in verify_uds_index_config()
1617 	int result;  in load_index_layout()  local
1620 	result = uds_make_buffered_reader(layout->factory,  in load_index_layout()
1622 	if (result != UDS_SUCCESS)  in load_index_layout()
1623 		return vdo_log_error_strerror(result, "unable to read superblock");  in load_index_layout()
1625 	result = load_super_block(layout, UDS_BLOCK_SIZE,  in load_index_layout()
1628 	if (result != UDS_SUCCESS)  in load_index_layout()
1629 		return result;  in load_index_layout()
1631 	result = verify_uds_index_config(layout, config);  in load_index_layout()
1632 	if (result != UDS_SUCCESS)  in load_index_layout()
1633 		return result;  in load_index_layout()
1641 	int result;  in create_layout_factory()  local
1645 	result = uds_make_io_factory(config->bdev, &factory);  in create_layout_factory()
1646 	if (result != UDS_SUCCESS)  in create_layout_factory()
1647 		return result;  in create_layout_factory()
1666 	int result;  in uds_make_index_layout()  local
1670 	result = compute_sizes(config, &sizes);  in uds_make_index_layout()
1671 	if (result != UDS_SUCCESS)  in uds_make_index_layout()
1672 		return result;  in uds_make_index_layout()
1674 	result = vdo_allocate(1, struct index_layout, __func__, &layout);  in uds_make_index_layout()
1675 	if (result != VDO_SUCCESS)  in uds_make_index_layout()
1676 		return result;  in uds_make_index_layout()
1678 	result = create_layout_factory(layout, config);  in uds_make_index_layout()
1679 	if (result != UDS_SUCCESS) {  in uds_make_index_layout()
1681 		return result;  in uds_make_index_layout()
1693 		result = create_index_layout(layout, config);  in uds_make_index_layout()
1695 		result = load_index_layout(layout, config);  in uds_make_index_layout()
1696 	if (result != UDS_SUCCESS) {  in uds_make_index_layout()
1698 		return result;  in uds_make_index_layout()