56 	struct erofs_super_block *dsb;  in erofs_superblock_csum_verify()  local
59 	dsb = kmemdup(sbdata + EROFS_SUPER_OFFSET,  in erofs_superblock_csum_verify()
61 	if (!dsb)  in erofs_superblock_csum_verify()
64 	expected_crc = le32_to_cpu(dsb->checksum);  in erofs_superblock_csum_verify()
65 	dsb->checksum = 0;  in erofs_superblock_csum_verify()
67 	crc = crc32c(~0, dsb, EROFS_BLKSIZ - EROFS_SUPER_OFFSET);  in erofs_superblock_csum_verify()
68 	kfree(dsb);  in erofs_superblock_csum_verify()
111 				       struct erofs_super_block *dsb)  in check_layout_compatibility()  argument
113 	const unsigned int feature = le32_to_cpu(dsb->feature_incompat);  in check_layout_compatibility()
164 				 struct erofs_super_block *dsb)  in erofs_load_compr_cfgs()  argument
172 	sbi->available_compr_algs = le16_to_cpu(dsb->u1.available_compr_algs);  in erofs_load_compr_cfgs()
195 			ret = z_erofs_load_lz4_config(sb, dsb, data, size);  in erofs_load_compr_cfgs()
198 			ret = z_erofs_load_lzma_config(sb, dsb, data, size);  in erofs_load_compr_cfgs()
213 				 struct erofs_super_block *dsb)  in erofs_load_compr_cfgs()  argument
215 	if (dsb->u1.available_compr_algs) {  in erofs_load_compr_cfgs()
270 			      struct erofs_super_block *dsb)  in erofs_scan_devices()  argument
283 		ondisk_extradevs = le16_to_cpu(dsb->extra_devices);  in erofs_scan_devices()
295 	pos = le16_to_cpu(dsb->devt_slotoff) * EROFS_DEVT_SLOT_SIZE;  in erofs_scan_devices()
332 	struct erofs_super_block *dsb;  in erofs_read_superblock()  local
344 	dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET);  in erofs_read_superblock()
347 	if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {  in erofs_read_superblock()
352 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
360 	blkszbits = dsb->blkszbits;  in erofs_read_superblock()
368 	if (!check_layout_compatibility(sb, dsb))  in erofs_read_superblock()
371 	sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE;  in erofs_read_superblock()
377 	sbi->primarydevice_blocks = le32_to_cpu(dsb->blocks);  in erofs_read_superblock()
378 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
380 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
383 	sbi->root_nid = le16_to_cpu(dsb->root_nid);  in erofs_read_superblock()
386 	if (erofs_sb_has_fragments(sbi) && dsb->packed_nid) {  in erofs_read_superblock()
388 			erofs_iget(sb, le64_to_cpu(dsb->packed_nid));  in erofs_read_superblock()
395 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
397 	sbi->build_time = le64_to_cpu(dsb->build_time);  in erofs_read_superblock()
398 	sbi->build_time_nsec = le32_to_cpu(dsb->build_time_nsec);  in erofs_read_superblock()
400 	memcpy(&sb->s_uuid, dsb->uuid, sizeof(dsb->uuid));  in erofs_read_superblock()
402 	ret = strscpy(sbi->volume_name, dsb->volume_name,  in erofs_read_superblock()
403 		      sizeof(dsb->volume_name));  in erofs_read_superblock()
412 		ret = erofs_load_compr_cfgs(sb, dsb);  in erofs_read_superblock()
414 		ret = z_erofs_load_lz4_config(sb, dsb, NULL, 0);  in erofs_read_superblock()
419 	ret = erofs_scan_devices(sb, dsb);  in erofs_read_superblock()