fs/nilfs2/the_nilfs.c

51  * @sb: super block instance
56 struct the_nilfs *alloc_nilfs(struct super_block *sb)
64 	nilfs->ns_sb = sb;
65 	nilfs->ns_bdev = sb->s_bdev;
97 				 struct super_block *sb, sector_t sr_block)
120 	err = nilfs_dat_read(sb, dat_entry_size, rawi, &nilfs->ns_dat);
125 	err = nilfs_cpfile_read(sb, checkpoint_size, rawi, &nilfs->ns_cpfile);
130 	err = nilfs_sufile_read(sb, segment_usage_size, rawi,
197  * @sb: super block instance
208 static int nilfs_get_blocksize(struct super_block *sb,
215 		nilfs_err(sb, "too large filesystem blocksize: 2 ^ %u KiB",
226  * @sb: super block instance used to recover past segment
232 int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
235 	unsigned int s_flags = sb->s_flags;
241 		nilfs_warn(sb, "mounting unchecked fs");
243 			nilfs_info(sb,
245 			nilfs_info(sb,
261 			nilfs_warn(sb,
265 		nilfs_info(sb, "trying rollback from an earlier position");
276 		err = nilfs_get_blocksize(sb, sbp[0], &blocksize);
281 			nilfs_warn(sb,
301 	err = nilfs_load_super_root(nilfs, sb, ri.ri_super_root);
303 		nilfs_err(sb, "error %d while loading super root", err);
307 	err = nilfs_sysfs_create_device_group(sb);
318 			nilfs_info(sb,
325 			nilfs_err(sb,
332 			nilfs_err(sb,
337 		sb->s_flags &= ~SB_RDONLY;
339 		nilfs_err(sb,
345 	err = nilfs_salvage_orphan_logs(nilfs, sb, &ri);
351 	err = nilfs_cleanup_super(sb);
355 		nilfs_err(sb,
360 	nilfs_info(sb, "recovery complete");
364 	sb->s_flags = s_flags;
368 	nilfs_err(sb, "error %d while searching super root", err);
381 	sb->s_flags = s_flags;
589 				  struct super_block *sb, int blocksize,
598 		nilfs_err(sb, "device size too small");
603 	sbp[0] = nilfs_read_super_block(sb, NILFS_SB_OFFSET_BYTES, blocksize,
605 	sbp[1] = nilfs_read_super_block(sb, sb2off, blocksize, &sbh[1]);
609 			nilfs_err(sb, "unable to read superblock");
612 		nilfs_warn(sb,
616 		nilfs_warn(sb,
640 		nilfs_err(sb, "couldn't find nilfs on the device");
645 		nilfs_warn(sb,
661  * @sb: super block
671 int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data)
679 	blocksize = sb_min_blocksize(sb, NILFS_MIN_BLOCK_SIZE);
681 		nilfs_err(sb, "unable to set blocksize");
685 	err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);
689 	err = nilfs_store_magic_and_option(sb, sbp, data);
693 	err = nilfs_check_feature_compatibility(sb, sbp);
697 	err = nilfs_get_blocksize(sb, sbp, &blocksize);
702 		nilfs_err(sb,
708 	if (sb->s_blocksize != blocksize) {
709 		int hw_blocksize = bdev_logical_block_size(sb->s_bdev);
712 			nilfs_err(sb,
719 		if (!sb_set_blocksize(sb, blocksize)) {
720 			nilfs_err(sb, "bad blocksize %d", blocksize);
725 		err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);
733 	nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
743 	sb->s_maxbytes = nilfs_max_size(sb->s_blocksize_bits);