196 	struct superblock_disk *disk = dm_block_data(b);  in sb_prepare_for_write()  local
198 	disk->blocknr = cpu_to_le64(dm_block_location(b));  in sb_prepare_for_write()
199 	disk->csum = cpu_to_le32(dm_bm_checksum(&disk->flags,  in sb_prepare_for_write()
204 static int check_metadata_version(struct superblock_disk *disk)  in check_metadata_version()  argument
206 	uint32_t metadata_version = le32_to_cpu(disk->version);  in check_metadata_version()
220 	struct superblock_disk *disk = dm_block_data(b);  in sb_check()  local
223 	if (dm_block_location(b) != le64_to_cpu(disk->blocknr)) {  in sb_check()
225 		      le64_to_cpu(disk->blocknr),  in sb_check()
230 	if (le64_to_cpu(disk->magic) != SUPERBLOCK_MAGIC) {  in sb_check()
232 		      le64_to_cpu(disk->magic),  in sb_check()
237 	csum_le = cpu_to_le32(dm_bm_checksum(&disk->flags,  in sb_check()
240 	if (csum_le != disk->csum) {  in sb_check()
242 		      le32_to_cpu(csum_le), le32_to_cpu(disk->csum));  in sb_check()
246 	return check_metadata_version(disk);  in sb_check()
354 static void ws_pack(const struct writeset_metadata *core, struct writeset_disk *disk)  in ws_pack()  argument
356 	disk->nr_bits = cpu_to_le32(core->nr_bits);  in ws_pack()
357 	disk->root = cpu_to_le64(core->root);  in ws_pack()
360 static void ws_unpack(const struct writeset_disk *disk, struct writeset_metadata *core)  in ws_unpack()  argument
362 	core->nr_bits = le32_to_cpu(disk->nr_bits);  in ws_unpack()
363 	core->root = le64_to_cpu(disk->root);  in ws_unpack()
478 static void copy_sm_root(struct era_metadata *md, struct superblock_disk *disk)  in copy_sm_root()  argument
480 	memcpy(&disk->metadata_space_map_root,  in copy_sm_root()
490 static void prepare_superblock(struct era_metadata *md, struct superblock_disk *disk)  in prepare_superblock()  argument
492 	disk->magic = cpu_to_le64(SUPERBLOCK_MAGIC);  in prepare_superblock()
493 	disk->flags = cpu_to_le32(0ul);  in prepare_superblock()
496 	memset(disk->uuid, 0, sizeof(disk->uuid));  in prepare_superblock()
497 	disk->version = cpu_to_le32(MAX_ERA_VERSION);  in prepare_superblock()
499 	copy_sm_root(md, disk);  in prepare_superblock()
501 	disk->data_block_size = cpu_to_le32(md->block_size);  in prepare_superblock()
502 	disk->metadata_block_size = cpu_to_le32(DM_ERA_METADATA_BLOCK_SIZE >> SECTOR_SHIFT);  in prepare_superblock()
503 	disk->nr_blocks = cpu_to_le32(md->nr_blocks);  in prepare_superblock()
504 	disk->current_era = cpu_to_le32(md->current_era);  in prepare_superblock()
506 	ws_pack(&md->current_writeset->md, &disk->current_writeset);  in prepare_superblock()
507 	disk->writeset_tree_root = cpu_to_le64(md->writeset_tree_root);  in prepare_superblock()
508 	disk->era_array_root = cpu_to_le64(md->era_array_root);  in prepare_superblock()
509 	disk->metadata_snap = cpu_to_le64(md->metadata_snap);  in prepare_superblock()
516 	struct superblock_disk *disk;  in write_superblock()  local
528 	disk = dm_block_data(sblock);  in write_superblock()
529 	prepare_superblock(md, disk);  in write_superblock()
559 	struct superblock_disk *disk;  in open_metadata()  local
567 	disk = dm_block_data(sblock);  in open_metadata()
570 	if (le32_to_cpu(disk->data_block_size) != md->block_size) {  in open_metadata()
572 		      le32_to_cpu(disk->data_block_size), md->block_size);  in open_metadata()
578 			       disk->metadata_space_map_root,  in open_metadata()
579 			       sizeof(disk->metadata_space_map_root),  in open_metadata()
588 	md->nr_blocks = le32_to_cpu(disk->nr_blocks);  in open_metadata()
589 	md->current_era = le32_to_cpu(disk->current_era);  in open_metadata()
591 	ws_unpack(&disk->current_writeset, &md->current_writeset->md);  in open_metadata()
592 	md->writeset_tree_root = le64_to_cpu(disk->writeset_tree_root);  in open_metadata()
593 	md->era_array_root = le64_to_cpu(disk->era_array_root);  in open_metadata()
594 	md->metadata_snap = le64_to_cpu(disk->metadata_snap);  in open_metadata()
735 	struct writeset_disk disk;  in metadata_digest_lookup_writeset()  local
745 			    md->writeset_tree_root, &key, &disk);  in metadata_digest_lookup_writeset()
756 	ws_unpack(&disk, &d->writeset);  in metadata_digest_lookup_writeset()
1077 	struct superblock_disk *disk;  in metadata_drop_snap()  local
1096 	disk = dm_block_data(clone);  in metadata_drop_snap()
1098 			 le64_to_cpu(disk->writeset_tree_root));  in metadata_drop_snap()
1105 	r = dm_array_del(&md->era_array_info, le64_to_cpu(disk->era_array_root));  in metadata_drop_snap()