39 static int nilfs_valid_sb(struct nilfs_super_block *sbp);
113 	struct nilfs_super_block **sbp = nilfs->ns_sbp;  in nilfs_load_super_root()  local
124 	dat_entry_size = le16_to_cpu(sbp[0]->s_dat_entry_size);  in nilfs_load_super_root()
125 	checkpoint_size = le16_to_cpu(sbp[0]->s_checkpoint_size);  in nilfs_load_super_root()
126 	segment_usage_size = le16_to_cpu(sbp[0]->s_segment_usage_size);  in nilfs_load_super_root()
184 				  struct nilfs_super_block *sbp)  in nilfs_store_log_cursor()  argument
188 	nilfs->ns_last_pseg = le64_to_cpu(sbp->s_last_pseg);  in nilfs_store_log_cursor()
189 	nilfs->ns_last_cno = le64_to_cpu(sbp->s_last_cno);  in nilfs_store_log_cursor()
190 	nilfs->ns_last_seq = le64_to_cpu(sbp->s_last_seq);  in nilfs_store_log_cursor()
235 		struct nilfs_super_block **sbp = nilfs->ns_sbp;  in load_nilfs()  local
241 		if (!nilfs_valid_sb(sbp[1])) {  in load_nilfs()
254 		memcpy(sbp[0], sbp[1], nilfs->ns_sbsize);  in load_nilfs()
255 		nilfs->ns_crc_seed = le32_to_cpu(sbp[0]->s_crc_seed);  in load_nilfs()
256 		nilfs->ns_sbwtime = le64_to_cpu(sbp[0]->s_wtime);  in load_nilfs()
259 		blocksize = BLOCK_SIZE << le32_to_cpu(sbp[0]->s_log_block_size);  in load_nilfs()
268 		err = nilfs_store_log_cursor(nilfs, sbp[0]);  in load_nilfs()
388 				   struct nilfs_super_block *sbp)  in nilfs_store_disk_layout()  argument
390 	if (le32_to_cpu(sbp->s_rev_level) < NILFS_MIN_SUPP_REV) {  in nilfs_store_disk_layout()
394 		       le32_to_cpu(sbp->s_rev_level),  in nilfs_store_disk_layout()
395 		       le16_to_cpu(sbp->s_minor_rev_level),  in nilfs_store_disk_layout()
399 	nilfs->ns_sbsize = le16_to_cpu(sbp->s_bytes);  in nilfs_store_disk_layout()
403 	nilfs->ns_inode_size = le16_to_cpu(sbp->s_inode_size);  in nilfs_store_disk_layout()
414 	nilfs->ns_first_ino = le32_to_cpu(sbp->s_first_ino);  in nilfs_store_disk_layout()
416 	nilfs->ns_blocks_per_segment = le32_to_cpu(sbp->s_blocks_per_segment);  in nilfs_store_disk_layout()
422 	nilfs->ns_first_data_block = le64_to_cpu(sbp->s_first_data_block);  in nilfs_store_disk_layout()
424 		le32_to_cpu(sbp->s_r_segments_percentage);  in nilfs_store_disk_layout()
431 	nilfs_set_nsegments(nilfs, le64_to_cpu(sbp->s_nsegments));  in nilfs_store_disk_layout()
432 	nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed);  in nilfs_store_disk_layout()
436 static int nilfs_valid_sb(struct nilfs_super_block *sbp)  in nilfs_valid_sb()  argument
443 	if (!sbp || le16_to_cpu(sbp->s_magic) != NILFS_SUPER_MAGIC)  in nilfs_valid_sb()
445 	bytes = le16_to_cpu(sbp->s_bytes);  in nilfs_valid_sb()
448 	crc = crc32_le(le32_to_cpu(sbp->s_crc_seed), (unsigned char *)sbp,  in nilfs_valid_sb()
451 	crc = crc32_le(crc, (unsigned char *)sbp + sumoff + 4,  in nilfs_valid_sb()
453 	return crc == le32_to_cpu(sbp->s_sum);  in nilfs_valid_sb()
456 static int nilfs_sb2_bad_offset(struct nilfs_super_block *sbp, u64 offset)  in nilfs_sb2_bad_offset()  argument
458 	return offset < ((le64_to_cpu(sbp->s_nsegments) *  in nilfs_sb2_bad_offset()
459 			  le32_to_cpu(sbp->s_blocks_per_segment)) <<  in nilfs_sb2_bad_offset()
460 			 (le32_to_cpu(sbp->s_log_block_size) + 10));  in nilfs_sb2_bad_offset()
500 	struct nilfs_super_block **sbp = nilfs->ns_sbp;  in nilfs_load_super_block()  local
505 	sbp[0] = nilfs_read_super_block(sb, NILFS_SB_OFFSET_BYTES, blocksize,  in nilfs_load_super_block()
507 	sbp[1] = nilfs_read_super_block(sb, sb2off, blocksize, &sbh[1]);  in nilfs_load_super_block()
509 	if (!sbp[0]) {  in nilfs_load_super_block()
510 		if (!sbp[1]) {  in nilfs_load_super_block()
517 	} else if (!sbp[1]) {  in nilfs_load_super_block()
527 	valid[0] = nilfs_valid_sb(sbp[0]);  in nilfs_load_super_block()
528 	valid[1] = nilfs_valid_sb(sbp[1]);  in nilfs_load_super_block()
530 			   le64_to_cpu(sbp[1]->s_last_cno) >  in nilfs_load_super_block()
531 			   le64_to_cpu(sbp[0]->s_last_cno));  in nilfs_load_super_block()
533 	if (valid[swp] && nilfs_sb2_bad_offset(sbp[swp], sb2off)) {  in nilfs_load_super_block()
536 		sbp[1] = NULL;  in nilfs_load_super_block()
554 	nilfs->ns_sbwtime = le64_to_cpu(sbp[0]->s_wtime);  in nilfs_load_super_block()
555 	nilfs->ns_prot_seq = le64_to_cpu(sbp[valid[1] & !swp]->s_last_seq);  in nilfs_load_super_block()
556 	*sbpp = sbp[0];  in nilfs_load_super_block()
575 	struct nilfs_super_block *sbp;  in init_nilfs()  local
587 	err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);  in init_nilfs()
591 	err = nilfs_store_magic_and_option(sb, sbp, data);  in init_nilfs()
595 	err = nilfs_check_feature_compatibility(sb, sbp);  in init_nilfs()
599 	blocksize = BLOCK_SIZE << le32_to_cpu(sbp->s_log_block_size);  in init_nilfs()
621 		err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);  in init_nilfs()
633 	err = nilfs_store_disk_layout(nilfs, sbp);  in init_nilfs()
639 	nilfs->ns_mount_state = le16_to_cpu(sbp->s_state);  in init_nilfs()
641 	err = nilfs_store_log_cursor(nilfs, sbp);  in init_nilfs()