54 	struct erofs_super_block *dsb;  in erofs_superblock_csum_verify()  local
57 	dsb = kmemdup(sbdata + EROFS_SUPER_OFFSET,  in erofs_superblock_csum_verify()
59 	if (!dsb)  in erofs_superblock_csum_verify()
62 	expected_crc = le32_to_cpu(dsb->checksum);  in erofs_superblock_csum_verify()
63 	dsb->checksum = 0;  in erofs_superblock_csum_verify()
65 	crc = crc32c(~0, dsb, EROFS_BLKSIZ - EROFS_SUPER_OFFSET);  in erofs_superblock_csum_verify()
66 	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()
190 				 struct erofs_super_block *dsb)  in erofs_load_compr_cfgs()  argument
199 	sbi->available_compr_algs = le16_to_cpu(dsb->u1.available_compr_algs);  in erofs_load_compr_cfgs()
226 			ret = z_erofs_load_lz4_config(sb, dsb, data, size);  in erofs_load_compr_cfgs()
245 				 struct erofs_super_block *dsb)  in erofs_load_compr_cfgs()  argument
247 	if (dsb->u1.available_compr_algs) {  in erofs_load_compr_cfgs()
259 	struct erofs_super_block *dsb;  in erofs_read_superblock()  local
273 	dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET);  in erofs_read_superblock()
276 	if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {  in erofs_read_superblock()
281 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
289 	blkszbits = dsb->blkszbits;  in erofs_read_superblock()
297 	if (!check_layout_compatibility(sb, dsb))  in erofs_read_superblock()
300 	sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE;  in erofs_read_superblock()
306 	sbi->blocks = le32_to_cpu(dsb->blocks);  in erofs_read_superblock()
307 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
309 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
312 	sbi->root_nid = le16_to_cpu(dsb->root_nid);  in erofs_read_superblock()
313 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
315 	sbi->build_time = le64_to_cpu(dsb->build_time);  in erofs_read_superblock()
316 	sbi->build_time_nsec = le32_to_cpu(dsb->build_time_nsec);  in erofs_read_superblock()
318 	memcpy(&sb->s_uuid, dsb->uuid, sizeof(dsb->uuid));  in erofs_read_superblock()
320 	ret = strscpy(sbi->volume_name, dsb->volume_name,  in erofs_read_superblock()
321 		      sizeof(dsb->volume_name));  in erofs_read_superblock()
330 		ret = erofs_load_compr_cfgs(sb, dsb);  in erofs_read_superblock()
332 		ret = z_erofs_load_lz4_config(sb, dsb, NULL, 0);  in erofs_read_superblock()