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()
129 	struct erofs_super_block *dsb;  in erofs_read_superblock()  local
143 	dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET);  in erofs_read_superblock()
146 	if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {  in erofs_read_superblock()
151 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
159 	blkszbits = dsb->blkszbits;  in erofs_read_superblock()
167 	if (!check_layout_compatibility(sb, dsb))  in erofs_read_superblock()
170 	sbi->blocks = le32_to_cpu(dsb->blocks);  in erofs_read_superblock()
171 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
173 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
176 	sbi->root_nid = le16_to_cpu(dsb->root_nid);  in erofs_read_superblock()
177 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
179 	sbi->build_time = le64_to_cpu(dsb->build_time);  in erofs_read_superblock()
180 	sbi->build_time_nsec = le32_to_cpu(dsb->build_time_nsec);  in erofs_read_superblock()
182 	memcpy(&sb->s_uuid, dsb->uuid, sizeof(dsb->uuid));  in erofs_read_superblock()
184 	ret = strscpy(sbi->volume_name, dsb->volume_name,  in erofs_read_superblock()
185 		      sizeof(dsb->volume_name));  in erofs_read_superblock()