144 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_prepare_for_write()  local
146 	disk_super->blocknr = cpu_to_le64(dm_block_location(b));  in sb_prepare_for_write()
147 	disk_super->csum = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_prepare_for_write()
152 static int check_metadata_version(struct cache_disk_superblock *disk_super)  in check_metadata_version()  argument
154 	uint32_t metadata_version = le32_to_cpu(disk_super->version);  in check_metadata_version()
168 	struct cache_disk_superblock *disk_super = dm_block_data(b);  in sb_check()  local
171 	if (dm_block_location(b) != le64_to_cpu(disk_super->blocknr)) {  in sb_check()
173 		      le64_to_cpu(disk_super->blocknr),  in sb_check()
178 	if (le64_to_cpu(disk_super->magic) != CACHE_SUPERBLOCK_MAGIC) {  in sb_check()
180 		      le64_to_cpu(disk_super->magic),  in sb_check()
185 	csum_le = cpu_to_le32(dm_bm_checksum(&disk_super->flags,  in sb_check()
188 	if (csum_le != disk_super->csum) {  in sb_check()
190 		      le32_to_cpu(csum_le), le32_to_cpu(disk_super->csum));  in sb_check()
194 	return check_metadata_version(disk_super);  in sb_check()
286 			   struct cache_disk_superblock *disk_super)  in __copy_sm_root()  argument
288 	memcpy(&disk_super->metadata_space_map_root,  in __copy_sm_root()
297 	struct cache_disk_superblock *disk_super;  in __write_initial_superblock()  local
320 	disk_super = dm_block_data(sblock);  in __write_initial_superblock()
321 	disk_super->flags = 0;  in __write_initial_superblock()
322 	memset(disk_super->uuid, 0, sizeof(disk_super->uuid));  in __write_initial_superblock()
323 	disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC);  in __write_initial_superblock()
324 	disk_super->version = cpu_to_le32(MAX_CACHE_VERSION);  in __write_initial_superblock()
325 	memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));  in __write_initial_superblock()
326 	memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version));  in __write_initial_superblock()
327 	disk_super->policy_hint_size = 0;  in __write_initial_superblock()
329 	__copy_sm_root(cmd, disk_super);  in __write_initial_superblock()
331 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __write_initial_superblock()
332 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __write_initial_superblock()
333 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __write_initial_superblock()
334 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __write_initial_superblock()
335 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __write_initial_superblock()
336 	disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE);  in __write_initial_superblock()
337 	disk_super->data_block_size = cpu_to_le32(cmd->data_block_size);  in __write_initial_superblock()
338 	disk_super->cache_blocks = cpu_to_le32(0);  in __write_initial_superblock()
340 	disk_super->read_hits = cpu_to_le32(0);  in __write_initial_superblock()
341 	disk_super->read_misses = cpu_to_le32(0);  in __write_initial_superblock()
342 	disk_super->write_hits = cpu_to_le32(0);  in __write_initial_superblock()
343 	disk_super->write_misses = cpu_to_le32(0);  in __write_initial_superblock()
388 static int __check_incompat_features(struct cache_disk_superblock *disk_super,  in __check_incompat_features()  argument
393 	features = le32_to_cpu(disk_super->incompat_flags) & ~DM_CACHE_FEATURE_INCOMPAT_SUPP;  in __check_incompat_features()
406 	features = le32_to_cpu(disk_super->compat_ro_flags) & ~DM_CACHE_FEATURE_COMPAT_RO_SUPP;  in __check_incompat_features()
420 	struct cache_disk_superblock *disk_super;  in __open_metadata()  local
429 	disk_super = dm_block_data(sblock);  in __open_metadata()
432 	if (le32_to_cpu(disk_super->data_block_size) != cmd->data_block_size) {  in __open_metadata()
434 		      le32_to_cpu(disk_super->data_block_size),  in __open_metadata()
440 	r = __check_incompat_features(disk_super, cmd);  in __open_metadata()
445 			       disk_super->metadata_space_map_root,  in __open_metadata()
446 			       sizeof(disk_super->metadata_space_map_root),  in __open_metadata()
455 	sb_flags = le32_to_cpu(disk_super->flags);  in __open_metadata()
508 static void update_flags(struct cache_disk_superblock *disk_super,  in update_flags()  argument
511 	uint32_t sb_flags = mutator(le32_to_cpu(disk_super->flags));  in update_flags()
512 	disk_super->flags = cpu_to_le32(sb_flags);  in update_flags()
528 				   struct cache_disk_superblock *disk_super)  in read_superblock_fields()  argument
530 	cmd->root = le64_to_cpu(disk_super->mapping_root);  in read_superblock_fields()
531 	cmd->hint_root = le64_to_cpu(disk_super->hint_root);  in read_superblock_fields()
532 	cmd->discard_root = le64_to_cpu(disk_super->discard_root);  in read_superblock_fields()
533 	cmd->discard_block_size = le64_to_cpu(disk_super->discard_block_size);  in read_superblock_fields()
534 	cmd->discard_nr_blocks = to_dblock(le64_to_cpu(disk_super->discard_nr_blocks));  in read_superblock_fields()
535 	cmd->data_block_size = le32_to_cpu(disk_super->data_block_size);  in read_superblock_fields()
536 	cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks));  in read_superblock_fields()
537 	strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name));  in read_superblock_fields()
538 	cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]);  in read_superblock_fields()
539 	cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]);  in read_superblock_fields()
540 	cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]);  in read_superblock_fields()
541 	cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size);  in read_superblock_fields()
543 	cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits);  in read_superblock_fields()
544 	cmd->stats.read_misses = le32_to_cpu(disk_super->read_misses);  in read_superblock_fields()
545 	cmd->stats.write_hits = le32_to_cpu(disk_super->write_hits);  in read_superblock_fields()
546 	cmd->stats.write_misses = le32_to_cpu(disk_super->write_misses);  in read_superblock_fields()
558 	struct cache_disk_superblock *disk_super;  in __begin_transaction_flags()  local
565 	disk_super = dm_block_data(sblock);  in __begin_transaction_flags()
566 	update_flags(disk_super, mutator);  in __begin_transaction_flags()
567 	read_superblock_fields(cmd, disk_super);  in __begin_transaction_flags()
576 	struct cache_disk_superblock *disk_super;  in __begin_transaction()  local
587 	disk_super = dm_block_data(sblock);  in __begin_transaction()
588 	read_superblock_fields(cmd, disk_super);  in __begin_transaction()
598 	struct cache_disk_superblock *disk_super;  in __commit_transaction()  local
623 	disk_super = dm_block_data(sblock);  in __commit_transaction()
626 		update_flags(disk_super, mutator);  in __commit_transaction()
628 	disk_super->mapping_root = cpu_to_le64(cmd->root);  in __commit_transaction()
629 	disk_super->hint_root = cpu_to_le64(cmd->hint_root);  in __commit_transaction()
630 	disk_super->discard_root = cpu_to_le64(cmd->discard_root);  in __commit_transaction()
631 	disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size);  in __commit_transaction()
632 	disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));  in __commit_transaction()
633 	disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks));  in __commit_transaction()
634 	strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name));  in __commit_transaction()
635 	disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]);  in __commit_transaction()
636 	disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]);  in __commit_transaction()
637 	disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]);  in __commit_transaction()
639 	disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits);  in __commit_transaction()
640 	disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses);  in __commit_transaction()
641 	disk_super->write_hits = cpu_to_le32(cmd->stats.write_hits);  in __commit_transaction()
642 	disk_super->write_misses = cpu_to_le32(cmd->stats.write_misses);  in __commit_transaction()
643 	__copy_sm_root(cmd, disk_super);  in __commit_transaction()