27 static int nilfs_valid_sb(struct nilfs_super_block *sbp);
101 	struct nilfs_super_block **sbp = nilfs->ns_sbp;  in nilfs_load_super_root()  local
112 	dat_entry_size = le16_to_cpu(sbp[0]->s_dat_entry_size);  in nilfs_load_super_root()
113 	checkpoint_size = le16_to_cpu(sbp[0]->s_checkpoint_size);  in nilfs_load_super_root()
114 	segment_usage_size = le16_to_cpu(sbp[0]->s_segment_usage_size);  in nilfs_load_super_root()
172 				  struct nilfs_super_block *sbp)  in nilfs_store_log_cursor()  argument
176 	nilfs->ns_last_pseg = le64_to_cpu(sbp->s_last_pseg);  in nilfs_store_log_cursor()
177 	nilfs->ns_last_cno = le64_to_cpu(sbp->s_last_cno);  in nilfs_store_log_cursor()
178 	nilfs->ns_last_seq = le64_to_cpu(sbp->s_last_seq);  in nilfs_store_log_cursor()
209 			       struct nilfs_super_block *sbp, int *blocksize)  in nilfs_get_blocksize()  argument
211 	unsigned int shift_bits = le32_to_cpu(sbp->s_log_block_size);  in nilfs_get_blocksize()
254 		struct nilfs_super_block **sbp = nilfs->ns_sbp;  in load_nilfs()  local
260 		if (!nilfs_valid_sb(sbp[1])) {  in load_nilfs()
271 		memcpy(sbp[0], sbp[1], nilfs->ns_sbsize);  in load_nilfs()
272 		nilfs->ns_crc_seed = le32_to_cpu(sbp[0]->s_crc_seed);  in load_nilfs()
273 		nilfs->ns_sbwtime = le64_to_cpu(sbp[0]->s_wtime);  in load_nilfs()
276 		err = nilfs_get_blocksize(sb, sbp[0], &blocksize);  in load_nilfs()
288 		err = nilfs_store_log_cursor(nilfs, sbp[0]);  in load_nilfs()
427 				   struct nilfs_super_block *sbp)  in nilfs_store_disk_layout()  argument
431 	if (le32_to_cpu(sbp->s_rev_level) < NILFS_MIN_SUPP_REV) {  in nilfs_store_disk_layout()
434 			  le32_to_cpu(sbp->s_rev_level),  in nilfs_store_disk_layout()
435 			  le16_to_cpu(sbp->s_minor_rev_level),  in nilfs_store_disk_layout()
439 	nilfs->ns_sbsize = le16_to_cpu(sbp->s_bytes);  in nilfs_store_disk_layout()
443 	nilfs->ns_inode_size = le16_to_cpu(sbp->s_inode_size);  in nilfs_store_disk_layout()
454 	nilfs->ns_first_ino = le32_to_cpu(sbp->s_first_ino);  in nilfs_store_disk_layout()
456 	nilfs->ns_blocks_per_segment = le32_to_cpu(sbp->s_blocks_per_segment);  in nilfs_store_disk_layout()
463 	nilfs->ns_first_data_block = le64_to_cpu(sbp->s_first_data_block);  in nilfs_store_disk_layout()
465 		le32_to_cpu(sbp->s_r_segments_percentage);  in nilfs_store_disk_layout()
474 	nsegments = le64_to_cpu(sbp->s_nsegments);  in nilfs_store_disk_layout()
503 	nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed);  in nilfs_store_disk_layout()
507 static int nilfs_valid_sb(struct nilfs_super_block *sbp)  in nilfs_valid_sb()  argument
514 	if (!sbp || le16_to_cpu(sbp->s_magic) != NILFS_SUPER_MAGIC)  in nilfs_valid_sb()
516 	bytes = le16_to_cpu(sbp->s_bytes);  in nilfs_valid_sb()
519 	crc = crc32_le(le32_to_cpu(sbp->s_crc_seed), (unsigned char *)sbp,  in nilfs_valid_sb()
522 	crc = crc32_le(crc, (unsigned char *)sbp + sumoff + 4,  in nilfs_valid_sb()
524 	return crc == le32_to_cpu(sbp->s_sum);  in nilfs_valid_sb()
540 static bool nilfs_sb2_bad_offset(struct nilfs_super_block *sbp, u64 offset)  in nilfs_sb2_bad_offset()  argument
542 	unsigned int shift_bits = le32_to_cpu(sbp->s_log_block_size);  in nilfs_sb2_bad_offset()
543 	u32 blocks_per_segment = le32_to_cpu(sbp->s_blocks_per_segment);  in nilfs_sb2_bad_offset()
544 	u64 nsegments = le64_to_cpu(sbp->s_nsegments);  in nilfs_sb2_bad_offset()
593 	struct nilfs_super_block **sbp = nilfs->ns_sbp;  in nilfs_load_super_block()  local
604 	sbp[0] = nilfs_read_super_block(sb, NILFS_SB_OFFSET_BYTES, blocksize,  in nilfs_load_super_block()
606 	sbp[1] = nilfs_read_super_block(sb, sb2off, blocksize, &sbh[1]);  in nilfs_load_super_block()
608 	if (!sbp[0]) {  in nilfs_load_super_block()
609 		if (!sbp[1]) {  in nilfs_load_super_block()
616 	} else if (!sbp[1]) {  in nilfs_load_super_block()
626 	valid[0] = nilfs_valid_sb(sbp[0]);  in nilfs_load_super_block()
627 	valid[1] = nilfs_valid_sb(sbp[1]);  in nilfs_load_super_block()
629 			   le64_to_cpu(sbp[1]->s_last_cno) >  in nilfs_load_super_block()
630 			   le64_to_cpu(sbp[0]->s_last_cno));  in nilfs_load_super_block()
632 	if (valid[swp] && nilfs_sb2_bad_offset(sbp[swp], sb2off)) {  in nilfs_load_super_block()
635 		sbp[1] = NULL;  in nilfs_load_super_block()
653 	nilfs->ns_sbwtime = le64_to_cpu(sbp[0]->s_wtime);  in nilfs_load_super_block()
654 	nilfs->ns_prot_seq = le64_to_cpu(sbp[valid[1] & !swp]->s_last_seq);  in nilfs_load_super_block()
655 	*sbpp = sbp[0];  in nilfs_load_super_block()
674 	struct nilfs_super_block *sbp;  in init_nilfs()  local
686 	err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);  in init_nilfs()
690 	err = nilfs_store_magic_and_option(sb, sbp, data);  in init_nilfs()
694 	err = nilfs_check_feature_compatibility(sb, sbp);  in init_nilfs()
698 	err = nilfs_get_blocksize(sb, sbp, &blocksize);  in init_nilfs()
726 		err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);  in init_nilfs()
740 	err = nilfs_store_disk_layout(nilfs, sbp);  in init_nilfs()
746 	nilfs->ns_mount_state = le16_to_cpu(sbp->s_state);  in init_nilfs()
748 	err = nilfs_store_log_cursor(nilfs, sbp);  in init_nilfs()