155 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_prepare_for_write()  local
157 	disk_super->blocknr = cpu_to_le64(dm_block_location(b));  in sb_prepare_for_write()
158 	disk_super->csum = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_prepare_for_write()
163 static int check_metadata_version(struct cache_disk_superblock *disk_super)  in check_metadata_version()  argument
165 	uint32_t metadata_version = le32_to_cpu(disk_super->version);  in check_metadata_version()
179 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_check()  local
182 	if (dm_block_location(b) != le64_to_cpu(disk_super->blocknr)) {  in sb_check()
184 		      le64_to_cpu(disk_super->blocknr),  in sb_check()
189 	if (le64_to_cpu(disk_super->magic) != CACHE_SUPERBLOCK_MAGIC) {  in sb_check()
191 		      le64_to_cpu(disk_super->magic),  in sb_check()
196 	csum_le = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_check()
199 	if (csum_le != disk_super->csum) {  in sb_check()
201 		      le32_to_cpu(csum_le), le32_to_cpu(disk_super->csum));  in sb_check()
205 	return check_metadata_version(disk_super);  in sb_check()
299 			   struct cache_disk_superblock *disk_super)  in __copy_sm_root()  argument
301 	memcpy(&disk_super->metadata_space_map_root,  in __copy_sm_root()
310 	struct cache_disk_superblock *disk_super;  in __write_initial_superblock()  local
333 	disk_super = dm_block_data(sblock);  in __write_initial_superblock()
334 	disk_super->flags = 0;  in __write_initial_superblock()
335 	memset(disk_super->uuid, 0, sizeof(disk_super->uuid));  in __write_initial_superblock()
336 	disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC);  in __write_initial_superblock()
337 	disk_super->version = cpu_to_le32(MAX_CACHE_VERSION);  in __write_initial_superblock()
338 	memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));  in __write_initial_superblock()
339 	memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version));  in __write_initial_superblock()
340 	disk_super->policy_hint_size = 0;  in __write_initial_superblock()
342 	__copy_sm_root(cmd, disk_super);  in __write_initial_superblock()
344 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __write_initial_superblock()
345 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __write_initial_superblock()
346 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __write_initial_superblock()
347 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __write_initial_superblock()
348 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __write_initial_superblock()
349 	disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE);  in __write_initial_superblock()
350 	disk_super->data_block_size = cpu_to_le32(cmd->data_block_size);  in __write_initial_superblock()
351 	disk_super->cache_blocks = cpu_to_le32(0);  in __write_initial_superblock()
353 	disk_super->read_hits = cpu_to_le32(0);  in __write_initial_superblock()
354 	disk_super->read_misses = cpu_to_le32(0);  in __write_initial_superblock()
355 	disk_super->write_hits = cpu_to_le32(0);  in __write_initial_superblock()
356 	disk_super->write_misses = cpu_to_le32(0);  in __write_initial_superblock()
401 static int __check_incompat_features(struct cache_disk_superblock *disk_super,  in __check_incompat_features()  argument
406 	features = le32_to_cpu(disk_super->incompat_flags) & ~DM_CACHE_FEATURE_INCOMPAT_SUPP;  in __check_incompat_features()
419 	features = le32_to_cpu(disk_super->compat_ro_flags) & ~DM_CACHE_FEATURE_COMPAT_RO_SUPP;  in __check_incompat_features()
433 	struct cache_disk_superblock *disk_super;  in __open_metadata()  local
442 	disk_super = dm_block_data(sblock);  in __open_metadata()
445 	if (le32_to_cpu(disk_super->data_block_size) != cmd->data_block_size) {  in __open_metadata()
447 		      le32_to_cpu(disk_super->data_block_size),  in __open_metadata()
453 	r = __check_incompat_features(disk_super, cmd);  in __open_metadata()
458 			       disk_super->metadata_space_map_root,  in __open_metadata()
459 			       sizeof(disk_super->metadata_space_map_root),  in __open_metadata()
468 	sb_flags = le32_to_cpu(disk_super->flags);  in __open_metadata()
523 static void update_flags(struct cache_disk_superblock *disk_super,  in update_flags()  argument
526 	uint32_t sb_flags = mutator(le32_to_cpu(disk_super->flags));  in update_flags()
527 	disk_super->flags = cpu_to_le32(sb_flags);  in update_flags()
543 				   struct cache_disk_superblock *disk_super)  in read_superblock_fields()  argument
545 	cmd->flags = le32_to_cpu(disk_super->flags);  in read_superblock_fields()
546 	cmd->root = le64_to_cpu(disk_super->mapping_root);  in read_superblock_fields()
547 	cmd->hint_root = le64_to_cpu(disk_super->hint_root);  in read_superblock_fields()
548 	cmd->discard_root = le64_to_cpu(disk_super->discard_root);  in read_superblock_fields()
549 	cmd->discard_block_size = le64_to_cpu(disk_super->discard_block_size);  in read_superblock_fields()
550 	cmd->discard_nr_blocks = to_dblock(le64_to_cpu(disk_super->discard_nr_blocks));  in read_superblock_fields()
551 	cmd->data_block_size = le32_to_cpu(disk_super->data_block_size);  in read_superblock_fields()
552 	cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks));  in read_superblock_fields()
553 	strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name));  in read_superblock_fields()
554 	cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]);  in read_superblock_fields()
555 	cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]);  in read_superblock_fields()
556 	cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]);  in read_superblock_fields()
557 	cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size);  in read_superblock_fields()
559 	cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits);  in read_superblock_fields()
560 	cmd->stats.read_misses = le32_to_cpu(disk_super->read_misses);  in read_superblock_fields()
561 	cmd->stats.write_hits = le32_to_cpu(disk_super->write_hits);  in read_superblock_fields()
562 	cmd->stats.write_misses = le32_to_cpu(disk_super->write_misses);  in read_superblock_fields()
574 	struct cache_disk_superblock *disk_super;  in __begin_transaction_flags()  local
581 	disk_super = dm_block_data(sblock);  in __begin_transaction_flags()
582 	update_flags(disk_super, mutator);  in __begin_transaction_flags()
583 	read_superblock_fields(cmd, disk_super);  in __begin_transaction_flags()
592 	struct cache_disk_superblock *disk_super;  in __begin_transaction()  local
603 	disk_super = dm_block_data(sblock);  in __begin_transaction()
604 	read_superblock_fields(cmd, disk_super);  in __begin_transaction()
614 	struct cache_disk_superblock *disk_super;  in __commit_transaction()  local
639 	disk_super = dm_block_data(sblock);  in __commit_transaction()
641 	disk_super->flags = cpu_to_le32(cmd->flags);  in __commit_transaction()
643 		update_flags(disk_super, mutator);  in __commit_transaction()
645 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __commit_transaction()
646 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __commit_transaction()
647 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __commit_transaction()
648 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __commit_transaction()
649 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __commit_transaction()
650 	disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks));  in __commit_transaction()
651 	strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name));  in __commit_transaction()
652 	disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]);  in __commit_transaction()
653 	disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]);  in __commit_transaction()
654 	disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]);  in __commit_transaction()
656 	disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits);  in __commit_transaction()
657 	disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses);  in __commit_transaction()
658 	disk_super->write_hits = cpu_to_le32(cmd->stats.write_hits);  in __commit_transaction()
659 	disk_super->write_misses = cpu_to_le32(cmd->stats.write_misses);  in __commit_transaction()
660 	__copy_sm_root(cmd, disk_super);  in __commit_transaction()
1482 	struct cache_disk_superblock *disk_super;  in dm_cache_metadata_set_needs_check()  local
1493 	disk_super = dm_block_data(sblock);  in dm_cache_metadata_set_needs_check()
1494 	disk_super->flags = cpu_to_le32(cmd->flags);  in dm_cache_metadata_set_needs_check()