54 	struct erofs_super_block *dsb;  in erofs_superblock_csum_verify()  local
60 	dsb = kmemdup(sbdata + EROFS_SUPER_OFFSET, len, GFP_KERNEL);  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, len);  in erofs_superblock_csum_verify()
68 	kfree(dsb);  in erofs_superblock_csum_verify()
109 				       struct erofs_super_block *dsb)  in check_layout_compatibility()  argument
111 	const unsigned int feature = le32_to_cpu(dsb->feature_incompat);  in check_layout_compatibility()
161 				 struct erofs_super_block *dsb)  in erofs_load_compr_cfgs()  argument
169 	sbi->available_compr_algs = le16_to_cpu(dsb->u1.available_compr_algs);  in erofs_load_compr_cfgs()
193 			ret = z_erofs_load_lz4_config(sb, dsb, data, size);  in erofs_load_compr_cfgs()
196 			ret = z_erofs_load_lzma_config(sb, dsb, data, size);  in erofs_load_compr_cfgs()
199 			ret = z_erofs_load_deflate_config(sb, dsb, data, size);  in erofs_load_compr_cfgs()
214 				 struct erofs_super_block *dsb)  in erofs_load_compr_cfgs()  argument
216 	if (dsb->u1.available_compr_algs) {  in erofs_load_compr_cfgs()
271 			      struct erofs_super_block *dsb)  in erofs_scan_devices()  argument
284 		ondisk_extradevs = le16_to_cpu(dsb->extra_devices);  in erofs_scan_devices()
299 	pos = le16_to_cpu(dsb->devt_slotoff) * EROFS_DEVT_SLOT_SIZE;  in erofs_scan_devices()
336 	struct erofs_super_block *dsb;  in erofs_read_superblock()  local
347 	dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET);  in erofs_read_superblock()
350 	if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {  in erofs_read_superblock()
355 	sbi->blkszbits  = dsb->blkszbits;  in erofs_read_superblock()
360 	if (dsb->dirblkbits) {  in erofs_read_superblock()
361 		erofs_err(sb, "dirblkbits %u isn't supported", dsb->dirblkbits);  in erofs_read_superblock()
365 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
373 	if (!check_layout_compatibility(sb, dsb))  in erofs_read_superblock()
376 	sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE;  in erofs_read_superblock()
382 	sbi->primarydevice_blocks = le32_to_cpu(dsb->blocks);  in erofs_read_superblock()
383 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
385 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
386 	sbi->xattr_prefix_start = le32_to_cpu(dsb->xattr_prefix_start);  in erofs_read_superblock()
387 	sbi->xattr_prefix_count = dsb->xattr_prefix_count;  in erofs_read_superblock()
388 	sbi->xattr_filter_reserved = dsb->xattr_filter_reserved;  in erofs_read_superblock()
391 	sbi->root_nid = le16_to_cpu(dsb->root_nid);  in erofs_read_superblock()
392 	sbi->packed_nid = le64_to_cpu(dsb->packed_nid);  in erofs_read_superblock()
393 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
395 	sbi->build_time = le64_to_cpu(dsb->build_time);  in erofs_read_superblock()
396 	sbi->build_time_nsec = le32_to_cpu(dsb->build_time_nsec);  in erofs_read_superblock()
398 	memcpy(&sb->s_uuid, dsb->uuid, sizeof(dsb->uuid));  in erofs_read_superblock()
400 	ret = strscpy(sbi->volume_name, dsb->volume_name,  in erofs_read_superblock()
401 		      sizeof(dsb->volume_name));  in erofs_read_superblock()
410 		ret = erofs_load_compr_cfgs(sb, dsb);  in erofs_read_superblock()
412 		ret = z_erofs_load_lz4_config(sb, dsb, NULL, 0);  in erofs_read_superblock()
417 	ret = erofs_scan_devices(sb, dsb);  in erofs_read_superblock()