177 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_prepare_for_write()  local
179 	disk_super->blocknr = cpu_to_le64(dm_block_location(b));  in sb_prepare_for_write()
180 	disk_super->csum = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_prepare_for_write()
185 static int check_metadata_version(struct cache_disk_superblock *disk_super)  in check_metadata_version()  argument
187 	uint32_t metadata_version = le32_to_cpu(disk_super->version);  in check_metadata_version()
202 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_check()  local
205 	if (dm_block_location(b) != le64_to_cpu(disk_super->blocknr)) {  in sb_check()
207 		      __func__, le64_to_cpu(disk_super->blocknr),  in sb_check()
212 	if (le64_to_cpu(disk_super->magic) != CACHE_SUPERBLOCK_MAGIC) {  in sb_check()
214 		      __func__, le64_to_cpu(disk_super->magic),  in sb_check()
219 	csum_le = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_check()
222 	if (csum_le != disk_super->csum) {  in sb_check()
224 		      __func__, le32_to_cpu(csum_le), le32_to_cpu(disk_super->csum));  in sb_check()
228 	return check_metadata_version(disk_super);  in sb_check()
322 			   struct cache_disk_superblock *disk_super)  in __copy_sm_root()  argument
324 	memcpy(&disk_super->metadata_space_map_root,  in __copy_sm_root()
338 	struct cache_disk_superblock *disk_super;  in __write_initial_superblock()  local
361 	disk_super = dm_block_data(sblock);  in __write_initial_superblock()
362 	disk_super->flags = 0;  in __write_initial_superblock()
363 	memset(disk_super->uuid, 0, sizeof(disk_super->uuid));  in __write_initial_superblock()
364 	disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC);  in __write_initial_superblock()
365 	disk_super->version = cpu_to_le32(cmd->version);  in __write_initial_superblock()
366 	memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));  in __write_initial_superblock()
367 	memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version));  in __write_initial_superblock()
368 	disk_super->policy_hint_size = cpu_to_le32(0);  in __write_initial_superblock()
370 	__copy_sm_root(cmd, disk_super);  in __write_initial_superblock()
372 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __write_initial_superblock()
373 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __write_initial_superblock()
374 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __write_initial_superblock()
375 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __write_initial_superblock()
376 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __write_initial_superblock()
377 	disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE);  in __write_initial_superblock()
378 	disk_super->data_block_size = cpu_to_le32(cmd->data_block_size);  in __write_initial_superblock()
379 	disk_super->cache_blocks = cpu_to_le32(0);  in __write_initial_superblock()
381 	disk_super->read_hits = cpu_to_le32(0);  in __write_initial_superblock()
382 	disk_super->read_misses = cpu_to_le32(0);  in __write_initial_superblock()
383 	disk_super->write_hits = cpu_to_le32(0);  in __write_initial_superblock()
384 	disk_super->write_misses = cpu_to_le32(0);  in __write_initial_superblock()
387 		disk_super->dirty_root = cpu_to_le64(cmd->dirty_root);  in __write_initial_superblock()
438 static int __check_incompat_features(struct cache_disk_superblock *disk_super,  in __check_incompat_features()  argument
443 	incompat_flags = le32_to_cpu(disk_super->incompat_flags);  in __check_incompat_features()
457 	features = le32_to_cpu(disk_super->compat_ro_flags) & ~DM_CACHE_FEATURE_COMPAT_RO_SUPP;  in __check_incompat_features()
471 	struct cache_disk_superblock *disk_super;  in __open_metadata()  local
480 	disk_super = dm_block_data(sblock);  in __open_metadata()
483 	if (le32_to_cpu(disk_super->data_block_size) != cmd->data_block_size) {  in __open_metadata()
485 		      le32_to_cpu(disk_super->data_block_size),  in __open_metadata()
491 	r = __check_incompat_features(disk_super, cmd);  in __open_metadata()
496 			       disk_super->metadata_space_map_root,  in __open_metadata()
497 			       sizeof(disk_super->metadata_space_map_root),  in __open_metadata()
507 	sb_flags = le32_to_cpu(disk_super->flags);  in __open_metadata()
568 static void update_flags(struct cache_disk_superblock *disk_super,  in update_flags()  argument
571 	uint32_t sb_flags = mutator(le32_to_cpu(disk_super->flags));  in update_flags()
573 	disk_super->flags = cpu_to_le32(sb_flags);  in update_flags()
589 				   struct cache_disk_superblock *disk_super)  in read_superblock_fields()  argument
591 	cmd->version = le32_to_cpu(disk_super->version);  in read_superblock_fields()
592 	cmd->flags = le32_to_cpu(disk_super->flags);  in read_superblock_fields()
593 	cmd->root = le64_to_cpu(disk_super->mapping_root);  in read_superblock_fields()
594 	cmd->hint_root = le64_to_cpu(disk_super->hint_root);  in read_superblock_fields()
595 	cmd->discard_root = le64_to_cpu(disk_super->discard_root);  in read_superblock_fields()
596 	cmd->discard_block_size = le64_to_cpu(disk_super->discard_block_size);  in read_superblock_fields()
597 	cmd->discard_nr_blocks = to_dblock(le64_to_cpu(disk_super->discard_nr_blocks));  in read_superblock_fields()
598 	cmd->data_block_size = le32_to_cpu(disk_super->data_block_size);  in read_superblock_fields()
599 	cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks));  in read_superblock_fields()
600 	strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name));  in read_superblock_fields()
601 	cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]);  in read_superblock_fields()
602 	cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]);  in read_superblock_fields()
603 	cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]);  in read_superblock_fields()
604 	cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size);  in read_superblock_fields()
606 	cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits);  in read_superblock_fields()
607 	cmd->stats.read_misses = le32_to_cpu(disk_super->read_misses);  in read_superblock_fields()
608 	cmd->stats.write_hits = le32_to_cpu(disk_super->write_hits);  in read_superblock_fields()
609 	cmd->stats.write_misses = le32_to_cpu(disk_super->write_misses);  in read_superblock_fields()
612 		cmd->dirty_root = le64_to_cpu(disk_super->dirty_root);  in read_superblock_fields()
624 	struct cache_disk_superblock *disk_super;  in __begin_transaction_flags()  local
631 	disk_super = dm_block_data(sblock);  in __begin_transaction_flags()
632 	update_flags(disk_super, mutator);  in __begin_transaction_flags()
633 	read_superblock_fields(cmd, disk_super);  in __begin_transaction_flags()
642 	struct cache_disk_superblock *disk_super;  in __begin_transaction()  local
653 	disk_super = dm_block_data(sblock);  in __begin_transaction()
654 	read_superblock_fields(cmd, disk_super);  in __begin_transaction()
664 	struct cache_disk_superblock *disk_super;  in __commit_transaction()  local
696 	disk_super = dm_block_data(sblock);  in __commit_transaction()
698 	disk_super->flags = cpu_to_le32(cmd->flags);  in __commit_transaction()
700 		update_flags(disk_super, mutator);  in __commit_transaction()
702 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __commit_transaction()
704 		disk_super->dirty_root = cpu_to_le64(cmd->dirty_root);  in __commit_transaction()
705 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __commit_transaction()
706 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __commit_transaction()
707 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __commit_transaction()
708 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __commit_transaction()
709 	disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks));  in __commit_transaction()
710 	strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name));  in __commit_transaction()
711 	disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]);  in __commit_transaction()
712 	disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]);  in __commit_transaction()
713 	disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]);  in __commit_transaction()
714 	disk_super->policy_hint_size = cpu_to_le32(cmd->policy_hint_size);  in __commit_transaction()
716 	disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits);  in __commit_transaction()
717 	disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses);  in __commit_transaction()
718 	disk_super->write_hits = cpu_to_le32(cmd->stats.write_hits);  in __commit_transaction()
719 	disk_super->write_misses = cpu_to_le32(cmd->stats.write_misses);  in __commit_transaction()
720 	__copy_sm_root(cmd, disk_super);  in __commit_transaction()
1788 	struct cache_disk_superblock *disk_super;  in dm_cache_metadata_set_needs_check()  local
1799 	disk_super = dm_block_data(sblock);  in dm_cache_metadata_set_needs_check()
1800 	disk_super->flags = cpu_to_le32(cmd->flags);  in dm_cache_metadata_set_needs_check()