Lines Matching refs:sb
19 int ext4_resize_begin(struct super_block *sb) in ext4_resize_begin() argument
31 if (EXT4_SB(sb)->s_sbh->b_blocknr != in ext4_resize_begin()
32 le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) { in ext4_resize_begin()
33 ext4_warning(sb, "won't resize using backup superblock at %llu", in ext4_resize_begin()
34 (unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr); in ext4_resize_begin()
42 if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) { in ext4_resize_begin()
43 ext4_warning(sb, "There are errors in the filesystem, " in ext4_resize_begin()
48 if (test_and_set_bit_lock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags)) in ext4_resize_begin()
54 void ext4_resize_end(struct super_block *sb) in ext4_resize_end() argument
56 clear_bit_unlock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags); in ext4_resize_end()
60 static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, in ext4_meta_bg_first_group() argument
62 return (group >> EXT4_DESC_PER_BLOCK_BITS(sb)) << in ext4_meta_bg_first_group()
63 EXT4_DESC_PER_BLOCK_BITS(sb); in ext4_meta_bg_first_group()
66 static ext4_fsblk_t ext4_meta_bg_first_block_no(struct super_block *sb, in ext4_meta_bg_first_block_no() argument
68 group = ext4_meta_bg_first_group(sb, group); in ext4_meta_bg_first_block_no()
69 return ext4_group_first_block_no(sb, group); in ext4_meta_bg_first_block_no()
72 static ext4_grpblk_t ext4_group_overhead_blocks(struct super_block *sb, in ext4_group_overhead_blocks() argument
75 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
76 if (ext4_bg_has_super(sb, group)) in ext4_group_overhead_blocks()
78 le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in ext4_group_overhead_blocks()
85 static int verify_group_input(struct super_block *sb, in verify_group_input() argument
88 struct ext4_sb_info *sbi = EXT4_SB(sb); in verify_group_input()
101 ext4_warning(sb, "Cannot add at group %u (only %u groups)", in verify_group_input()
106 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
111 if (test_opt(sb, DEBUG)) in verify_group_input()
114 ext4_bg_has_super(sb, input->group) ? "normal" : in verify_group_input()
118 ext4_get_group_no_and_offset(sb, start, NULL, &offset); in verify_group_input()
120 ext4_warning(sb, "Last group not full"); in verify_group_input()
122 ext4_warning(sb, "Reserved blocks too high (%u)", in verify_group_input()
125 ext4_warning(sb, "Bad blocks count %u", in verify_group_input()
127 else if (!(bh = sb_bread(sb, end - 1))) in verify_group_input()
128 ext4_warning(sb, "Cannot read last block (%llu)", in verify_group_input()
131 ext4_warning(sb, "Block bitmap not in group (block %llu)", in verify_group_input()
134 ext4_warning(sb, "Inode bitmap not in group (block %llu)", in verify_group_input()
138 ext4_warning(sb, "Inode table not in group (blocks %llu-%llu)", in verify_group_input()
141 ext4_warning(sb, "Block bitmap same as inode bitmap (%llu)", in verify_group_input()
144 ext4_warning(sb, "Block bitmap (%llu) in inode table " in verify_group_input()
149 ext4_warning(sb, "Inode bitmap (%llu) in inode table " in verify_group_input()
154 ext4_warning(sb, "Block bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
158 ext4_warning(sb, "Inode bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
163 ext4_warning(sb, "Inode table (%llu-%llu) overlaps GDT table " in verify_group_input()
244 static int ext4_alloc_group_tables(struct super_block *sb, in ext4_alloc_group_tables() argument
271 start_blk = ext4_group_first_block_no(sb, src_group); in ext4_alloc_group_tables()
274 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
281 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
293 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
304 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
312 unsigned int itb = EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
318 group = ext4_get_group_number(sb, start_blk); in ext4_alloc_group_tables()
319 next_group_start = ext4_group_first_block_no(sb, group + 1); in ext4_alloc_group_tables()
331 start_blk += EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
334 if (test_opt(sb, DEBUG)) { in ext4_alloc_group_tables()
345 ext4_bg_has_super(sb, group + i) ? "normal" : in ext4_alloc_group_tables()
354 static struct buffer_head *bclean(handle_t *handle, struct super_block *sb, in bclean() argument
360 bh = sb_getblk(sb, blk); in bclean()
368 memset(bh->b_data, 0, sb->s_blocksize); in bclean()
408 static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle, in set_flexbg_block_bitmap() argument
421 group = ext4_get_group_number(sb, block); in set_flexbg_block_bitmap()
422 start = ext4_group_first_block_no(sb, group); in set_flexbg_block_bitmap()
425 count2 = EXT4_BLOCKS_PER_GROUP(sb) - (block - start); in set_flexbg_block_bitmap()
438 bh = sb_getblk(sb, flex_gd->groups[group].block_bitmap); in set_flexbg_block_bitmap()
473 static int setup_new_flex_group_blocks(struct super_block *sb, in setup_new_flex_group_blocks() argument
476 int group_table_count[] = {1, 1, EXT4_SB(sb)->s_itb_per_group}; in setup_new_flex_group_blocks()
479 struct ext4_sb_info *sbi = EXT4_SB(sb); in setup_new_flex_group_blocks()
493 meta_bg = ext4_has_feature_meta_bg(sb); in setup_new_flex_group_blocks()
496 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in setup_new_flex_group_blocks()
505 gdblocks = ext4_bg_num_gdb(sb, group); in setup_new_flex_group_blocks()
506 start = ext4_group_first_block_no(sb, group); in setup_new_flex_group_blocks()
508 if (meta_bg == 0 && !ext4_bg_has_super(sb, group)) in setup_new_flex_group_blocks()
513 first_group = ext4_meta_bg_first_group(sb, group); in setup_new_flex_group_blocks()
515 first_group != group + EXT4_DESC_PER_BLOCK(sb) - 1) in setup_new_flex_group_blocks()
519 block = start + ext4_bg_has_super(sb, group); in setup_new_flex_group_blocks()
529 gdb = sb_getblk(sb, block); in setup_new_flex_group_blocks()
556 if (ext4_bg_has_super(sb, group)) { in setup_new_flex_group_blocks()
557 err = sb_issue_zeroout(sb, gdblocks + start + 1, in setup_new_flex_group_blocks()
572 err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, in setup_new_flex_group_blocks()
587 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
593 overhead = ext4_group_overhead_blocks(sb, group); in setup_new_flex_group_blocks()
600 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
616 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
623 ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), in setup_new_flex_group_blocks()
624 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
643 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
653 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
676 static unsigned ext4_list_backups(struct super_block *sb, unsigned *three, in ext4_list_backups() argument
683 if (!ext4_has_feature_sparse_super(sb)) { in ext4_list_backups()
709 static int verify_reserved_gdb(struct super_block *sb, in verify_reserved_gdb() argument
721 while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) { in verify_reserved_gdb()
723 grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ in verify_reserved_gdb()
724 ext4_warning(sb, "reserved GDT %llu" in verify_reserved_gdb()
728 (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) + in verify_reserved_gdb()
732 if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb)) in verify_reserved_gdb()
755 struct super_block *sb = inode->i_sb; in add_new_gdb() local
756 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in add_new_gdb()
757 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb()
758 ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num; in add_new_gdb()
767 if (test_opt(sb, DEBUG)) in add_new_gdb()
772 gdb_bh = sb_bread(sb, gdblock); in add_new_gdb()
776 gdbackups = verify_reserved_gdb(sb, group, gdb_bh); in add_new_gdb()
783 dind = sb_bread(sb, le32_to_cpu(*data)); in add_new_gdb()
790 if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) { in add_new_gdb()
791 ext4_warning(sb, "new group %u GDT block %llu not reserved", in add_new_gdb()
797 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in add_new_gdb()
798 err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); in add_new_gdb()
810 ext4_std_error(sb, err); in add_new_gdb()
822 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb()
836 data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0; in add_new_gdb()
839 ext4_std_error(sb, err); in add_new_gdb()
842 inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> 9; in add_new_gdb()
844 memset(gdb_bh->b_data, 0, sb->s_blocksize); in add_new_gdb()
847 ext4_std_error(sb, err); in add_new_gdb()
852 o_group_desc = EXT4_SB(sb)->s_group_desc; in add_new_gdb()
854 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb()
856 EXT4_SB(sb)->s_group_desc = n_group_desc; in add_new_gdb()
857 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb()
861 err = ext4_handle_dirty_super(handle, sb); in add_new_gdb()
863 ext4_std_error(sb, err); in add_new_gdb()
882 static int add_new_gdb_meta_bg(struct super_block *sb, in add_new_gdb_meta_bg() argument
887 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb_meta_bg()
890 gdblock = ext4_meta_bg_first_block_no(sb, group) + in add_new_gdb_meta_bg()
891 ext4_bg_has_super(sb, group); in add_new_gdb_meta_bg()
892 gdb_bh = sb_bread(sb, gdblock); in add_new_gdb_meta_bg()
900 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb_meta_bg()
905 o_group_desc = EXT4_SB(sb)->s_group_desc; in add_new_gdb_meta_bg()
907 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb_meta_bg()
909 EXT4_SB(sb)->s_group_desc = n_group_desc; in add_new_gdb_meta_bg()
910 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb_meta_bg()
935 struct super_block *sb = inode->i_sb; in reserve_backup_gdb() local
936 int reserved_gdb =le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in reserve_backup_gdb()
951 dind = sb_bread(sb, le32_to_cpu(*data)); in reserve_backup_gdb()
957 blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count; in reserve_backup_gdb()
958 data = (__le32 *)dind->b_data + (EXT4_SB(sb)->s_gdb_count % in reserve_backup_gdb()
959 EXT4_ADDR_PER_BLOCK(sb)); in reserve_backup_gdb()
960 end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb); in reserve_backup_gdb()
965 ext4_warning(sb, "reserved block %llu" in reserve_backup_gdb()
972 primary[res] = sb_bread(sb, blk); in reserve_backup_gdb()
977 gdbackups = verify_reserved_gdb(sb, group, primary[res]); in reserve_backup_gdb()
1000 blk = group * EXT4_BLOCKS_PER_GROUP(sb); in reserve_backup_gdb()
1012 inode->i_blocks += reserved_gdb * sb->s_blocksize >> 9; in reserve_backup_gdb()
1042 static void update_backups(struct super_block *sb, sector_t blk_off, char *data, in update_backups() argument
1045 struct ext4_sb_info *sbi = EXT4_SB(sb); in update_backups()
1047 const int bpg = EXT4_BLOCKS_PER_GROUP(sb); in update_backups()
1052 int rest = sb->s_blocksize - size; in update_backups()
1056 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in update_backups()
1064 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1067 group = ext4_get_group_number(sb, blk_off) + 1; in update_backups()
1068 last = (ext4_group_t)(group + EXT4_DESC_PER_BLOCK(sb) - 2); in update_backups()
1085 backup_block = (ext4_group_first_block_no(sb, group) + in update_backups()
1086 ext4_bg_has_super(sb, group)); in update_backups()
1088 bh = sb_getblk(sb, backup_block); in update_backups()
1095 ext4_group_first_block_no(sb, group)); in update_backups()
1107 ext4_std_error(sb, err); in update_backups()
1111 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1132 ext4_warning(sb, "can't update backup for group %u (err %d), " in update_backups()
1150 static int ext4_add_new_descs(handle_t *handle, struct super_block *sb, in ext4_add_new_descs() argument
1154 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_add_new_descs()
1160 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_add_new_descs()
1162 int reserved_gdb = ext4_bg_has_super(sb, group) ? in ext4_add_new_descs()
1165 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1166 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1179 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) in ext4_add_new_descs()
1182 err = add_new_gdb_meta_bg(sb, handle, group); in ext4_add_new_descs()
1192 static struct buffer_head *ext4_get_bitmap(struct super_block *sb, __u64 block) in ext4_get_bitmap() argument
1194 struct buffer_head *bh = sb_getblk(sb, block); in ext4_get_bitmap()
1207 static int ext4_set_bitmap_checksums(struct super_block *sb, in ext4_set_bitmap_checksums() argument
1214 if (!ext4_has_metadata_csum(sb)) in ext4_set_bitmap_checksums()
1217 bh = ext4_get_bitmap(sb, group_data->inode_bitmap); in ext4_set_bitmap_checksums()
1220 ext4_inode_bitmap_csum_set(sb, group, gdp, bh, in ext4_set_bitmap_checksums()
1221 EXT4_INODES_PER_GROUP(sb) / 8); in ext4_set_bitmap_checksums()
1224 bh = ext4_get_bitmap(sb, group_data->block_bitmap); in ext4_set_bitmap_checksums()
1227 ext4_block_bitmap_csum_set(sb, group, gdp, bh); in ext4_set_bitmap_checksums()
1236 static int ext4_setup_new_descs(handle_t *handle, struct super_block *sb, in ext4_setup_new_descs() argument
1241 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_new_descs()
1251 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1252 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1260 gdb_off * EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1262 memset(gdp, 0, EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1263 ext4_block_bitmap_set(sb, gdp, group_data->block_bitmap); in ext4_setup_new_descs()
1264 ext4_inode_bitmap_set(sb, gdp, group_data->inode_bitmap); in ext4_setup_new_descs()
1265 err = ext4_set_bitmap_checksums(sb, group, gdp, group_data); in ext4_setup_new_descs()
1267 ext4_std_error(sb, err); in ext4_setup_new_descs()
1271 ext4_inode_table_set(sb, gdp, group_data->inode_table); in ext4_setup_new_descs()
1272 ext4_free_group_clusters_set(sb, gdp, in ext4_setup_new_descs()
1274 ext4_free_inodes_set(sb, gdp, EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1275 if (ext4_has_group_desc_csum(sb)) in ext4_setup_new_descs()
1276 ext4_itable_unused_set(sb, gdp, in ext4_setup_new_descs()
1277 EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1279 ext4_group_desc_csum_set(sb, group, gdp); in ext4_setup_new_descs()
1283 ext4_std_error(sb, err); in ext4_setup_new_descs()
1291 err = ext4_mb_add_groupinfo(sb, group, gdp); in ext4_setup_new_descs()
1305 static void ext4_update_super(struct super_block *sb, in ext4_update_super() argument
1312 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_update_super()
1339 le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1341 le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1368 (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); in ext4_update_super()
1379 EXT4_INODES_PER_GROUP(sb) * flex_gd->count); in ext4_update_super()
1383 if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) { in ext4_update_super()
1388 atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count, in ext4_update_super()
1395 ext4_calculate_overhead(sb); in ext4_update_super()
1397 if (test_opt(sb, DEBUG)) in ext4_update_super()
1407 static int ext4_flex_group_add(struct super_block *sb, in ext4_flex_group_add() argument
1411 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_flex_group_add()
1424 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_flex_group_add()
1427 err = setup_new_flex_group_blocks(sb, flex_gd); in ext4_flex_group_add()
1439 credit += 1 + DIV_ROUND_UP(flex_gd->count, EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1441 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credit); in ext4_flex_group_add()
1453 BUG_ON(group != EXT4_SB(sb)->s_groups_count); in ext4_flex_group_add()
1454 err = ext4_add_new_descs(handle, sb, group, in ext4_flex_group_add()
1459 err = ext4_setup_new_descs(handle, sb, flex_gd); in ext4_flex_group_add()
1463 ext4_update_super(sb, flex_gd); in ext4_flex_group_add()
1465 err = ext4_handle_dirty_super(handle, sb); in ext4_flex_group_add()
1473 int gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_flex_group_add()
1475 EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1476 int meta_bg = ext4_has_feature_meta_bg(sb); in ext4_flex_group_add()
1479 update_backups(sb, sbi->s_sbh->b_blocknr, (char *)es, in ext4_flex_group_add()
1487 update_backups(sb, gdb_bh->b_blocknr, gdb_bh->b_data, in ext4_flex_group_add()
1496 static int ext4_setup_next_flex_gd(struct super_block *sb, in ext4_setup_next_flex_gd() argument
1501 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_setup_next_flex_gd()
1511 blocks_per_group = EXT4_BLOCKS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1518 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_setup_next_flex_gd()
1520 ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &last); in ext4_setup_next_flex_gd()
1533 overhead = ext4_group_overhead_blocks(sb, group + i); in ext4_setup_next_flex_gd()
1535 if (ext4_has_group_desc_csum(sb)) { in ext4_setup_next_flex_gd()
1538 if (!test_opt(sb, INIT_INODE_TABLE)) in ext4_setup_next_flex_gd()
1544 if (last_group == n_group && ext4_has_group_desc_csum(sb)) in ext4_setup_next_flex_gd()
1570 int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) in ext4_group_add() argument
1573 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_group_add()
1575 int reserved_gdb = ext4_bg_has_super(sb, input->group) ? in ext4_group_add()
1582 gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb); in ext4_group_add()
1584 if (gdb_off == 0 && !ext4_has_feature_sparse_super(sb)) { in ext4_group_add()
1585 ext4_warning(sb, "Can't resize non-sparse filesystem further"); in ext4_group_add()
1591 ext4_warning(sb, "blocks_count overflow"); in ext4_group_add()
1595 if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) < in ext4_group_add()
1597 ext4_warning(sb, "inodes_count overflow"); in ext4_group_add()
1602 if (ext4_has_feature_resize_inode(sb) || in ext4_group_add()
1604 ext4_warning(sb, in ext4_group_add()
1608 inode = ext4_iget(sb, EXT4_RESIZE_INO); in ext4_group_add()
1610 ext4_warning(sb, "Error opening resize inode"); in ext4_group_add()
1616 err = verify_group_input(sb, input); in ext4_group_add()
1620 err = ext4_alloc_flex_bg_array(sb, input->group + 1); in ext4_group_add()
1624 err = ext4_mb_alloc_groupinfo(sb, input->group + 1); in ext4_group_add()
1631 err = ext4_flex_group_add(sb, inode, &flex_gd); in ext4_group_add()
1640 static int ext4_group_extend_no_check(struct super_block *sb, in ext4_group_extend_no_check() argument
1643 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_group_extend_no_check()
1650 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, 3); in ext4_group_extend_no_check()
1653 ext4_warning(sb, "error %d on journal start", err); in ext4_group_extend_no_check()
1657 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in ext4_group_extend_no_check()
1658 err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1660 ext4_warning(sb, "error %d on journal write access", err); in ext4_group_extend_no_check()
1669 err = ext4_group_add_blocks(handle, sb, o_blocks_count, add); in ext4_group_extend_no_check()
1672 ext4_handle_dirty_super(handle, sb); in ext4_group_extend_no_check()
1681 if (test_opt(sb, DEBUG)) in ext4_group_extend_no_check()
1684 update_backups(sb, EXT4_SB(sb)->s_sbh->b_blocknr, in ext4_group_extend_no_check()
1700 int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, in ext4_group_extend() argument
1712 if (test_opt(sb, DEBUG)) in ext4_group_extend()
1713 ext4_msg(sb, KERN_DEBUG, in ext4_group_extend()
1720 if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { in ext4_group_extend()
1721 ext4_msg(sb, KERN_ERR, in ext4_group_extend()
1725 ext4_warning(sb, "CONFIG_LBDAF not enabled"); in ext4_group_extend()
1730 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_group_extend()
1735 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_group_extend()
1738 ext4_warning(sb, "need to use ext2online to resize further"); in ext4_group_extend()
1742 add = EXT4_BLOCKS_PER_GROUP(sb) - last; in ext4_group_extend()
1745 ext4_warning(sb, "blocks_count overflow"); in ext4_group_extend()
1753 ext4_warning(sb, "will only finish group (%llu blocks, %u new)", in ext4_group_extend()
1757 bh = sb_bread(sb, o_blocks_count + add - 1); in ext4_group_extend()
1759 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_group_extend()
1764 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_group_extend()
1769 static int num_desc_blocks(struct super_block *sb, ext4_group_t groups) in num_desc_blocks() argument
1771 return (groups + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); in num_desc_blocks()
1779 static int ext4_convert_meta_bg(struct super_block *sb, struct inode *inode) in ext4_convert_meta_bg() argument
1782 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_convert_meta_bg()
1789 ext4_msg(sb, KERN_INFO, "Converting file system to meta_bg"); in ext4_convert_meta_bg()
1792 ext4_error(sb, "Unexpected non-zero " in ext4_convert_meta_bg()
1813 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credits); in ext4_convert_meta_bg()
1822 ext4_clear_feature_resize_inode(sb); in ext4_convert_meta_bg()
1823 ext4_set_feature_meta_bg(sb); in ext4_convert_meta_bg()
1825 cpu_to_le32(num_desc_blocks(sb, sbi->s_groups_count)); in ext4_convert_meta_bg()
1827 err = ext4_handle_dirty_super(handle, sb); in ext4_convert_meta_bg()
1829 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1843 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1853 ext4_error(sb, "corrupted/inconsistent resize inode"); in ext4_convert_meta_bg()
1863 int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) in ext4_resize_fs() argument
1866 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_fs()
1882 bh = sb_bread(sb, n_blocks_count - 1); in ext4_resize_fs()
1884 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_resize_fs()
1892 ext4_msg(sb, KERN_INFO, "resizing filesystem from %llu " in ext4_resize_fs()
1897 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_resize_fs()
1905 n_group = ext4_get_group_number(sb, n_blocks_count - 1); in ext4_resize_fs()
1906 if (n_group > (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { in ext4_resize_fs()
1907 ext4_warning(sb, "resize would cause inodes_count overflow"); in ext4_resize_fs()
1910 ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); in ext4_resize_fs()
1912 n_desc_blocks = num_desc_blocks(sb, n_group + 1); in ext4_resize_fs()
1913 o_desc_blocks = num_desc_blocks(sb, sbi->s_groups_count); in ext4_resize_fs()
1915 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_resize_fs()
1917 if (ext4_has_feature_resize_inode(sb)) { in ext4_resize_fs()
1919 ext4_error(sb, "resize_inode and meta_bg enabled " in ext4_resize_fs()
1928 n_group = n_desc_blocks * EXT4_DESC_PER_BLOCK(sb); in ext4_resize_fs()
1929 n_blocks_count = n_group * EXT4_BLOCKS_PER_GROUP(sb); in ext4_resize_fs()
1934 resize_inode = ext4_iget(sb, EXT4_RESIZE_INO); in ext4_resize_fs()
1936 ext4_warning(sb, "Error opening resize inode"); in ext4_resize_fs()
1942 err = ext4_convert_meta_bg(sb, resize_inode); in ext4_resize_fs()
1960 add = EXT4_BLOCKS_PER_GROUP(sb) - (offset + 1); in ext4_resize_fs()
1962 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_resize_fs()
1970 err = ext4_alloc_flex_bg_array(sb, n_group + 1); in ext4_resize_fs()
1974 err = ext4_mb_alloc_groupinfo(sb, n_group + 1); in ext4_resize_fs()
1987 while (ext4_setup_next_flex_gd(sb, flex_gd, n_blocks_count, in ext4_resize_fs()
1991 ext4_msg(sb, KERN_INFO, in ext4_resize_fs()
1996 if (ext4_alloc_group_tables(sb, flex_gd, flexbg_size) != 0) in ext4_resize_fs()
1998 err = ext4_flex_group_add(sb, resize_inode, flex_gd); in ext4_resize_fs()
2016 ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", n_blocks_count); in ext4_resize_fs()