175 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_prepare_for_write()  local
177 	disk_super->blocknr = cpu_to_le64(dm_block_location(b));  in sb_prepare_for_write()
178 	disk_super->csum = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_prepare_for_write()
183 static int check_metadata_version(struct cache_disk_superblock *disk_super)  in check_metadata_version()  argument
185 	uint32_t metadata_version = le32_to_cpu(disk_super->version);  in check_metadata_version()
200 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_check()  local
203 	if (dm_block_location(b) != le64_to_cpu(disk_super->blocknr)) {  in sb_check()
205 		      le64_to_cpu(disk_super->blocknr),  in sb_check()
210 	if (le64_to_cpu(disk_super->magic) != CACHE_SUPERBLOCK_MAGIC) {  in sb_check()
212 		      le64_to_cpu(disk_super->magic),  in sb_check()
217 	csum_le = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_check()
220 	if (csum_le != disk_super->csum) {  in sb_check()
222 		      le32_to_cpu(csum_le), le32_to_cpu(disk_super->csum));  in sb_check()
226 	return check_metadata_version(disk_super);  in sb_check()
320 			   struct cache_disk_superblock *disk_super)  in __copy_sm_root()  argument
322 	memcpy(&disk_super->metadata_space_map_root,  in __copy_sm_root()
336 	struct cache_disk_superblock *disk_super;  in __write_initial_superblock()  local
359 	disk_super = dm_block_data(sblock);  in __write_initial_superblock()
360 	disk_super->flags = 0;  in __write_initial_superblock()
361 	memset(disk_super->uuid, 0, sizeof(disk_super->uuid));  in __write_initial_superblock()
362 	disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC);  in __write_initial_superblock()
363 	disk_super->version = cpu_to_le32(cmd->version);  in __write_initial_superblock()
364 	memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));  in __write_initial_superblock()
365 	memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version));  in __write_initial_superblock()
366 	disk_super->policy_hint_size = cpu_to_le32(0);  in __write_initial_superblock()
368 	__copy_sm_root(cmd, disk_super);  in __write_initial_superblock()
370 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __write_initial_superblock()
371 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __write_initial_superblock()
372 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __write_initial_superblock()
373 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __write_initial_superblock()
374 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __write_initial_superblock()
375 	disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE);  in __write_initial_superblock()
376 	disk_super->data_block_size = cpu_to_le32(cmd->data_block_size);  in __write_initial_superblock()
377 	disk_super->cache_blocks = cpu_to_le32(0);  in __write_initial_superblock()
379 	disk_super->read_hits = cpu_to_le32(0);  in __write_initial_superblock()
380 	disk_super->read_misses = cpu_to_le32(0);  in __write_initial_superblock()
381 	disk_super->write_hits = cpu_to_le32(0);  in __write_initial_superblock()
382 	disk_super->write_misses = cpu_to_le32(0);  in __write_initial_superblock()
385 		disk_super->dirty_root = cpu_to_le64(cmd->dirty_root);  in __write_initial_superblock()
436 static int __check_incompat_features(struct cache_disk_superblock *disk_super,  in __check_incompat_features()  argument
441 	incompat_flags = le32_to_cpu(disk_super->incompat_flags);  in __check_incompat_features()
455 	features = le32_to_cpu(disk_super->compat_ro_flags) & ~DM_CACHE_FEATURE_COMPAT_RO_SUPP;  in __check_incompat_features()
469 	struct cache_disk_superblock *disk_super;  in __open_metadata()  local
478 	disk_super = dm_block_data(sblock);  in __open_metadata()
481 	if (le32_to_cpu(disk_super->data_block_size) != cmd->data_block_size) {  in __open_metadata()
483 		      le32_to_cpu(disk_super->data_block_size),  in __open_metadata()
489 	r = __check_incompat_features(disk_super, cmd);  in __open_metadata()
494 			       disk_super->metadata_space_map_root,  in __open_metadata()
495 			       sizeof(disk_super->metadata_space_map_root),  in __open_metadata()
505 	sb_flags = le32_to_cpu(disk_super->flags);  in __open_metadata()
559 static void update_flags(struct cache_disk_superblock *disk_super,  in update_flags()  argument
562 	uint32_t sb_flags = mutator(le32_to_cpu(disk_super->flags));  in update_flags()
563 	disk_super->flags = cpu_to_le32(sb_flags);  in update_flags()
579 				   struct cache_disk_superblock *disk_super)  in read_superblock_fields()  argument
581 	cmd->version = le32_to_cpu(disk_super->version);  in read_superblock_fields()
582 	cmd->flags = le32_to_cpu(disk_super->flags);  in read_superblock_fields()
583 	cmd->root = le64_to_cpu(disk_super->mapping_root);  in read_superblock_fields()
584 	cmd->hint_root = le64_to_cpu(disk_super->hint_root);  in read_superblock_fields()
585 	cmd->discard_root = le64_to_cpu(disk_super->discard_root);  in read_superblock_fields()
586 	cmd->discard_block_size = le64_to_cpu(disk_super->discard_block_size);  in read_superblock_fields()
587 	cmd->discard_nr_blocks = to_dblock(le64_to_cpu(disk_super->discard_nr_blocks));  in read_superblock_fields()
588 	cmd->data_block_size = le32_to_cpu(disk_super->data_block_size);  in read_superblock_fields()
589 	cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks));  in read_superblock_fields()
590 	strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name));  in read_superblock_fields()
591 	cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]);  in read_superblock_fields()
592 	cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]);  in read_superblock_fields()
593 	cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]);  in read_superblock_fields()
594 	cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size);  in read_superblock_fields()
596 	cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits);  in read_superblock_fields()
597 	cmd->stats.read_misses = le32_to_cpu(disk_super->read_misses);  in read_superblock_fields()
598 	cmd->stats.write_hits = le32_to_cpu(disk_super->write_hits);  in read_superblock_fields()
599 	cmd->stats.write_misses = le32_to_cpu(disk_super->write_misses);  in read_superblock_fields()
602 		cmd->dirty_root = le64_to_cpu(disk_super->dirty_root);  in read_superblock_fields()
614 	struct cache_disk_superblock *disk_super;  in __begin_transaction_flags()  local
621 	disk_super = dm_block_data(sblock);  in __begin_transaction_flags()
622 	update_flags(disk_super, mutator);  in __begin_transaction_flags()
623 	read_superblock_fields(cmd, disk_super);  in __begin_transaction_flags()
632 	struct cache_disk_superblock *disk_super;  in __begin_transaction()  local
643 	disk_super = dm_block_data(sblock);  in __begin_transaction()
644 	read_superblock_fields(cmd, disk_super);  in __begin_transaction()
654 	struct cache_disk_superblock *disk_super;  in __commit_transaction()  local
686 	disk_super = dm_block_data(sblock);  in __commit_transaction()
688 	disk_super->flags = cpu_to_le32(cmd->flags);  in __commit_transaction()
690 		update_flags(disk_super, mutator);  in __commit_transaction()
692 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __commit_transaction()
694 		disk_super->dirty_root = cpu_to_le64(cmd->dirty_root);  in __commit_transaction()
695 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __commit_transaction()
696 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __commit_transaction()
697 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __commit_transaction()
698 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __commit_transaction()
699 	disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks));  in __commit_transaction()
700 	strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name));  in __commit_transaction()
701 	disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]);  in __commit_transaction()
702 	disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]);  in __commit_transaction()
703 	disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]);  in __commit_transaction()
704 	disk_super->policy_hint_size = cpu_to_le32(cmd->policy_hint_size);  in __commit_transaction()
706 	disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits);  in __commit_transaction()
707 	disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses);  in __commit_transaction()
708 	disk_super->write_hits = cpu_to_le32(cmd->stats.write_hits);  in __commit_transaction()
709 	disk_super->write_misses = cpu_to_le32(cmd->stats.write_misses);  in __commit_transaction()
710 	__copy_sm_root(cmd, disk_super);  in __commit_transaction()
1775 	struct cache_disk_superblock *disk_super;  in dm_cache_metadata_set_needs_check()  local
1786 	disk_super = dm_block_data(sblock);  in dm_cache_metadata_set_needs_check()
1787 	disk_super->flags = cpu_to_le32(cmd->flags);  in dm_cache_metadata_set_needs_check()