Lines Matching refs:sb
48 int ext4_resize_begin(struct super_block *sb) in ext4_resize_begin() argument
50 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_begin()
60 if (EXT4_SB(sb)->s_es->s_reserved_gdt_blocks && in ext4_resize_begin()
61 !ext4_has_feature_resize_inode(sb)) { in ext4_resize_begin()
62 ext4_error(sb, "resize_inode disabled but reserved GDT blocks non-zero"); in ext4_resize_begin()
72 le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) { in ext4_resize_begin()
73 ext4_warning(sb, "won't resize using backup superblock at %llu", in ext4_resize_begin()
74 (unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr); in ext4_resize_begin()
82 if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) { in ext4_resize_begin()
83 ext4_warning(sb, "There are errors in the filesystem, " in ext4_resize_begin()
88 if (ext4_has_feature_sparse_super2(sb)) { in ext4_resize_begin()
89 ext4_msg(sb, KERN_ERR, "Online resizing not supported with sparse_super2"); in ext4_resize_begin()
94 &EXT4_SB(sb)->s_ext4_flags)) in ext4_resize_begin()
100 int ext4_resize_end(struct super_block *sb, bool update_backups) in ext4_resize_end() argument
102 clear_bit_unlock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags); in ext4_resize_end()
105 return ext4_update_overhead(sb, true); in ext4_resize_end()
109 static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, in ext4_meta_bg_first_group() argument
111 return (group >> EXT4_DESC_PER_BLOCK_BITS(sb)) << in ext4_meta_bg_first_group()
112 EXT4_DESC_PER_BLOCK_BITS(sb); in ext4_meta_bg_first_group()
115 static ext4_fsblk_t ext4_meta_bg_first_block_no(struct super_block *sb, in ext4_meta_bg_first_block_no() argument
117 group = ext4_meta_bg_first_group(sb, group); in ext4_meta_bg_first_block_no()
118 return ext4_group_first_block_no(sb, group); in ext4_meta_bg_first_block_no()
121 static ext4_grpblk_t ext4_group_overhead_blocks(struct super_block *sb, in ext4_group_overhead_blocks() argument
124 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
125 if (ext4_bg_has_super(sb, group)) in ext4_group_overhead_blocks()
127 le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in ext4_group_overhead_blocks()
134 static int verify_group_input(struct super_block *sb, in verify_group_input() argument
137 struct ext4_sb_info *sbi = EXT4_SB(sb); in verify_group_input()
150 ext4_warning(sb, "Cannot add at group %u (only %u groups)", in verify_group_input()
155 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
160 if (test_opt(sb, DEBUG)) in verify_group_input()
163 ext4_bg_has_super(sb, input->group) ? "normal" : in verify_group_input()
167 ext4_get_group_no_and_offset(sb, start, NULL, &offset); in verify_group_input()
169 ext4_warning(sb, "Last group not full"); in verify_group_input()
171 ext4_warning(sb, "Reserved blocks too high (%u)", in verify_group_input()
174 ext4_warning(sb, "Bad blocks count %u", in verify_group_input()
176 else if (IS_ERR(bh = ext4_sb_bread(sb, end - 1, 0))) { in verify_group_input()
179 ext4_warning(sb, "Cannot read last block (%llu)", in verify_group_input()
182 ext4_warning(sb, "Block bitmap not in group (block %llu)", in verify_group_input()
185 ext4_warning(sb, "Inode bitmap not in group (block %llu)", in verify_group_input()
189 ext4_warning(sb, "Inode table not in group (blocks %llu-%llu)", in verify_group_input()
192 ext4_warning(sb, "Block bitmap same as inode bitmap (%llu)", in verify_group_input()
195 ext4_warning(sb, "Block bitmap (%llu) in inode table " in verify_group_input()
200 ext4_warning(sb, "Inode bitmap (%llu) in inode table " in verify_group_input()
205 ext4_warning(sb, "Block bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
209 ext4_warning(sb, "Inode bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
214 ext4_warning(sb, "Inode table (%llu-%llu) overlaps GDT table " in verify_group_input()
305 static int ext4_alloc_group_tables(struct super_block *sb, in ext4_alloc_group_tables() argument
333 start_blk = ext4_group_first_block_no(sb, src_group); in ext4_alloc_group_tables()
336 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
343 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
355 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
366 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
374 unsigned int itb = EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
380 group = ext4_get_group_number(sb, start_blk); in ext4_alloc_group_tables()
381 next_group_start = ext4_group_first_block_no(sb, group + 1); in ext4_alloc_group_tables()
393 start_blk += EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
399 EXT4_NUM_B2C(EXT4_SB(sb), in ext4_alloc_group_tables()
403 if (test_opt(sb, DEBUG)) { in ext4_alloc_group_tables()
414 ext4_bg_has_super(sb, group + i) ? "normal" : in ext4_alloc_group_tables()
424 static struct buffer_head *bclean(handle_t *handle, struct super_block *sb, in bclean() argument
430 bh = sb_getblk(sb, blk); in bclean()
434 err = ext4_journal_get_write_access(handle, sb, bh, EXT4_JTR_NONE); in bclean()
439 memset(bh->b_data, 0, sb->s_blocksize); in bclean()
461 static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle, in set_flexbg_block_bitmap() argument
465 struct ext4_sb_info *sbi = EXT4_SB(sb); in set_flexbg_block_bitmap()
478 group = ext4_get_group_number(sb, EXT4_C2B(sbi, first_cluster)); in set_flexbg_block_bitmap()
479 start = EXT4_B2C(sbi, ext4_group_first_block_no(sb, group)); in set_flexbg_block_bitmap()
482 count2 = EXT4_CLUSTERS_PER_GROUP(sb) - (first_cluster - start); in set_flexbg_block_bitmap()
495 bh = sb_getblk(sb, flex_gd->groups[group].block_bitmap); in set_flexbg_block_bitmap()
500 err = ext4_journal_get_write_access(handle, sb, bh, in set_flexbg_block_bitmap()
533 static int setup_new_flex_group_blocks(struct super_block *sb, in setup_new_flex_group_blocks() argument
536 int group_table_count[] = {1, 1, EXT4_SB(sb)->s_itb_per_group}; in setup_new_flex_group_blocks()
539 struct ext4_sb_info *sbi = EXT4_SB(sb); in setup_new_flex_group_blocks()
553 meta_bg = ext4_has_feature_meta_bg(sb); in setup_new_flex_group_blocks()
556 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in setup_new_flex_group_blocks()
565 gdblocks = ext4_bg_num_gdb(sb, group); in setup_new_flex_group_blocks()
566 start = ext4_group_first_block_no(sb, group); in setup_new_flex_group_blocks()
568 if (meta_bg == 0 && !ext4_bg_has_super(sb, group)) in setup_new_flex_group_blocks()
574 block = start + ext4_bg_has_super(sb, group); in setup_new_flex_group_blocks()
584 gdb = sb_getblk(sb, block); in setup_new_flex_group_blocks()
591 err = ext4_journal_get_write_access(handle, sb, gdb, in setup_new_flex_group_blocks()
612 if (ext4_bg_has_super(sb, group)) { in setup_new_flex_group_blocks()
613 err = sb_issue_zeroout(sb, gdblocks + start + 1, in setup_new_flex_group_blocks()
628 err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, in setup_new_flex_group_blocks()
643 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
648 overhead = ext4_group_overhead_blocks(sb, group); in setup_new_flex_group_blocks()
656 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
672 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
678 ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), in setup_new_flex_group_blocks()
679 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
697 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
711 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
737 unsigned int ext4_list_backups(struct super_block *sb, unsigned int *three, in ext4_list_backups() argument
740 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_list_backups()
745 if (ext4_has_feature_sparse_super2(sb)) { in ext4_list_backups()
755 if (!ext4_has_feature_sparse_super(sb)) { in ext4_list_backups()
781 static int verify_reserved_gdb(struct super_block *sb, in verify_reserved_gdb() argument
793 while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) { in verify_reserved_gdb()
795 grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ in verify_reserved_gdb()
796 ext4_warning(sb, "reserved GDT %llu" in verify_reserved_gdb()
800 (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) + in verify_reserved_gdb()
804 if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb)) in verify_reserved_gdb()
827 struct super_block *sb = inode->i_sb; in add_new_gdb() local
828 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in add_new_gdb()
829 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb()
830 ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num; in add_new_gdb()
839 if (test_opt(sb, DEBUG)) in add_new_gdb()
844 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb()
848 gdbackups = verify_reserved_gdb(sb, group, gdb_bh); in add_new_gdb()
855 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in add_new_gdb()
863 if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) { in add_new_gdb()
864 ext4_warning(sb, "new group %u GDT block %llu not reserved", in add_new_gdb()
870 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in add_new_gdb()
871 err = ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh, in add_new_gdb()
877 err = ext4_journal_get_write_access(handle, sb, gdb_bh, EXT4_JTR_NONE); in add_new_gdb()
882 err = ext4_journal_get_write_access(handle, sb, dind, EXT4_JTR_NONE); in add_new_gdb()
884 ext4_std_error(sb, err); in add_new_gdb()
897 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb()
911 data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0; in add_new_gdb()
914 ext4_std_error(sb, err); in add_new_gdb()
917 inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> in add_new_gdb()
918 (9 - EXT4_SB(sb)->s_cluster_bits); in add_new_gdb()
920 memset(gdb_bh->b_data, 0, sb->s_blocksize); in add_new_gdb()
923 ext4_std_error(sb, err); in add_new_gdb()
930 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb()
932 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb()
935 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb()
936 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb()
939 lock_buffer(EXT4_SB(sb)->s_sbh); in add_new_gdb()
941 ext4_superblock_csum_set(sb); in add_new_gdb()
942 unlock_buffer(EXT4_SB(sb)->s_sbh); in add_new_gdb()
943 err = ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh); in add_new_gdb()
945 ext4_std_error(sb, err); in add_new_gdb()
960 static int add_new_gdb_meta_bg(struct super_block *sb, in add_new_gdb_meta_bg() argument
965 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb_meta_bg()
968 gdblock = ext4_meta_bg_first_block_no(sb, group) + in add_new_gdb_meta_bg()
969 ext4_bg_has_super(sb, group); in add_new_gdb_meta_bg()
970 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb_meta_bg()
978 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb_meta_bg()
984 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb_meta_bg()
986 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb_meta_bg()
991 err = ext4_journal_get_write_access(handle, sb, gdb_bh, EXT4_JTR_NONE); in add_new_gdb_meta_bg()
998 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb_meta_bg()
999 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb_meta_bg()
1020 struct super_block *sb = inode->i_sb; in reserve_backup_gdb() local
1021 int reserved_gdb =le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in reserve_backup_gdb()
1022 int cluster_bits = EXT4_SB(sb)->s_cluster_bits; in reserve_backup_gdb()
1037 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in reserve_backup_gdb()
1044 blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count; in reserve_backup_gdb()
1045 data = (__le32 *)dind->b_data + (EXT4_SB(sb)->s_gdb_count % in reserve_backup_gdb()
1046 EXT4_ADDR_PER_BLOCK(sb)); in reserve_backup_gdb()
1047 end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb); in reserve_backup_gdb()
1052 ext4_warning(sb, "reserved block %llu" in reserve_backup_gdb()
1059 primary[res] = ext4_sb_bread(sb, blk, 0); in reserve_backup_gdb()
1065 gdbackups = verify_reserved_gdb(sb, group, primary[res]); in reserve_backup_gdb()
1077 if ((err = ext4_journal_get_write_access(handle, sb, primary[i], in reserve_backup_gdb()
1089 blk = group * EXT4_BLOCKS_PER_GROUP(sb); in reserve_backup_gdb()
1102 inode->i_blocks += reserved_gdb * sb->s_blocksize >> (9 - cluster_bits); in reserve_backup_gdb()
1116 static inline void ext4_set_block_group_nr(struct super_block *sb, char *data, in ext4_set_block_group_nr() argument
1122 if (ext4_has_metadata_csum(sb)) in ext4_set_block_group_nr()
1123 es->s_checksum = ext4_superblock_csum(sb, es); in ext4_set_block_group_nr()
1142 static void update_backups(struct super_block *sb, sector_t blk_off, char *data, in update_backups() argument
1145 struct ext4_sb_info *sbi = EXT4_SB(sb); in update_backups()
1147 const int bpg = EXT4_BLOCKS_PER_GROUP(sb); in update_backups()
1152 int rest = sb->s_blocksize - size; in update_backups()
1156 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in update_backups()
1164 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1167 group = ext4_get_group_number(sb, blk_off) + 1; in update_backups()
1168 last = (ext4_group_t)(group + EXT4_DESC_PER_BLOCK(sb) - 2); in update_backups()
1174 int has_super = ext4_bg_has_super(sb, group); in update_backups()
1175 ext4_fsblk_t first_block = ext4_group_first_block_no(sb, group); in update_backups()
1187 bh = sb_getblk(sb, backup_block); in update_backups()
1194 ext4_group_first_block_no(sb, group)); in update_backups()
1196 if ((err = ext4_journal_get_write_access(handle, sb, bh, in update_backups()
1206 ext4_set_block_group_nr(sb, bh->b_data, group); in update_backups()
1211 ext4_std_error(sb, err); in update_backups()
1215 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1236 ext4_warning(sb, "can't update backup for group %u (err %d), " in update_backups()
1254 static int ext4_add_new_descs(handle_t *handle, struct super_block *sb, in ext4_add_new_descs() argument
1258 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_add_new_descs()
1264 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_add_new_descs()
1266 int reserved_gdb = ext4_bg_has_super(sb, group) ? in ext4_add_new_descs()
1269 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1270 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1282 err = ext4_journal_get_write_access(handle, sb, gdb_bh, in ext4_add_new_descs()
1285 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) in ext4_add_new_descs()
1288 err = add_new_gdb_meta_bg(sb, handle, group); in ext4_add_new_descs()
1298 static struct buffer_head *ext4_get_bitmap(struct super_block *sb, __u64 block) in ext4_get_bitmap() argument
1300 struct buffer_head *bh = sb_getblk(sb, block); in ext4_get_bitmap()
1313 static int ext4_set_bitmap_checksums(struct super_block *sb, in ext4_set_bitmap_checksums() argument
1319 if (!ext4_has_metadata_csum(sb)) in ext4_set_bitmap_checksums()
1322 bh = ext4_get_bitmap(sb, group_data->inode_bitmap); in ext4_set_bitmap_checksums()
1325 ext4_inode_bitmap_csum_set(sb, gdp, bh, in ext4_set_bitmap_checksums()
1326 EXT4_INODES_PER_GROUP(sb) / 8); in ext4_set_bitmap_checksums()
1329 bh = ext4_get_bitmap(sb, group_data->block_bitmap); in ext4_set_bitmap_checksums()
1332 ext4_block_bitmap_csum_set(sb, gdp, bh); in ext4_set_bitmap_checksums()
1341 static int ext4_setup_new_descs(handle_t *handle, struct super_block *sb, in ext4_setup_new_descs() argument
1346 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_new_descs()
1356 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1357 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1365 gdb_off * EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1367 memset(gdp, 0, EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1368 ext4_block_bitmap_set(sb, gdp, group_data->block_bitmap); in ext4_setup_new_descs()
1369 ext4_inode_bitmap_set(sb, gdp, group_data->inode_bitmap); in ext4_setup_new_descs()
1370 err = ext4_set_bitmap_checksums(sb, gdp, group_data); in ext4_setup_new_descs()
1372 ext4_std_error(sb, err); in ext4_setup_new_descs()
1376 ext4_inode_table_set(sb, gdp, group_data->inode_table); in ext4_setup_new_descs()
1377 ext4_free_group_clusters_set(sb, gdp, in ext4_setup_new_descs()
1379 ext4_free_inodes_set(sb, gdp, EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1380 if (ext4_has_group_desc_csum(sb)) in ext4_setup_new_descs()
1381 ext4_itable_unused_set(sb, gdp, in ext4_setup_new_descs()
1382 EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1384 ext4_group_desc_csum_set(sb, group, gdp); in ext4_setup_new_descs()
1388 ext4_std_error(sb, err); in ext4_setup_new_descs()
1396 err = ext4_mb_add_groupinfo(sb, group, gdp); in ext4_setup_new_descs()
1403 static void ext4_add_overhead(struct super_block *sb, in ext4_add_overhead() argument
1406 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_add_overhead()
1421 static void ext4_update_super(struct super_block *sb, in ext4_update_super() argument
1428 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_update_super()
1456 le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1458 le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1485 (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); in ext4_update_super()
1496 EXT4_INODES_PER_GROUP(sb) * flex_gd->count); in ext4_update_super()
1500 if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) { in ext4_update_super()
1508 atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count, in ext4_update_super()
1519 if (ext4_has_feature_bigalloc(sb) && (sbi->s_overhead != 0)) in ext4_update_super()
1520 ext4_add_overhead(sb, in ext4_update_super()
1523 ext4_calculate_overhead(sb); in ext4_update_super()
1526 ext4_superblock_csum_set(sb); in ext4_update_super()
1528 if (test_opt(sb, DEBUG)) in ext4_update_super()
1538 static int ext4_flex_group_add(struct super_block *sb, in ext4_flex_group_add() argument
1542 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_flex_group_add()
1555 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_flex_group_add()
1558 err = setup_new_flex_group_blocks(sb, flex_gd); in ext4_flex_group_add()
1570 credit += 1 + DIV_ROUND_UP(flex_gd->count, EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1572 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credit); in ext4_flex_group_add()
1579 err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh, in ext4_flex_group_add()
1586 err = ext4_add_new_descs(handle, sb, group, in ext4_flex_group_add()
1591 err = ext4_setup_new_descs(handle, sb, flex_gd); in ext4_flex_group_add()
1595 ext4_update_super(sb, flex_gd); in ext4_flex_group_add()
1605 int gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_flex_group_add()
1607 EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1608 int meta_bg = ext4_has_feature_meta_bg(sb); in ext4_flex_group_add()
1610 ext4_group_first_block_no(sb, 0); in ext4_flex_group_add()
1613 update_backups(sb, ext4_group_first_block_no(sb, 0), in ext4_flex_group_add()
1622 update_backups(sb, gdb_bh->b_blocknr - padding_blocks, in ext4_flex_group_add()
1631 static int ext4_setup_next_flex_gd(struct super_block *sb, in ext4_setup_next_flex_gd() argument
1635 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_next_flex_gd()
1646 clusters_per_group = EXT4_CLUSTERS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1653 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_setup_next_flex_gd()
1655 ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &last); in ext4_setup_next_flex_gd()
1667 group_data[i].blocks_count = EXT4_BLOCKS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1668 overhead = ext4_group_overhead_blocks(sb, group + i); in ext4_setup_next_flex_gd()
1670 group_data[i].free_clusters_count = EXT4_CLUSTERS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1671 if (ext4_has_group_desc_csum(sb)) { in ext4_setup_next_flex_gd()
1674 if (!test_opt(sb, INIT_INODE_TABLE)) in ext4_setup_next_flex_gd()
1680 if (last_group == n_group && ext4_has_group_desc_csum(sb)) in ext4_setup_next_flex_gd()
1706 int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) in ext4_group_add() argument
1709 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_group_add()
1711 int reserved_gdb = ext4_bg_has_super(sb, input->group) ? in ext4_group_add()
1718 gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb); in ext4_group_add()
1720 if (gdb_off == 0 && !ext4_has_feature_sparse_super(sb)) { in ext4_group_add()
1721 ext4_warning(sb, "Can't resize non-sparse filesystem further"); in ext4_group_add()
1727 ext4_warning(sb, "blocks_count overflow"); in ext4_group_add()
1731 if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) < in ext4_group_add()
1733 ext4_warning(sb, "inodes_count overflow"); in ext4_group_add()
1738 if (!ext4_has_feature_resize_inode(sb) || in ext4_group_add()
1740 ext4_warning(sb, in ext4_group_add()
1744 inode = ext4_iget(sb, EXT4_RESIZE_INO, EXT4_IGET_SPECIAL); in ext4_group_add()
1746 ext4_warning(sb, "Error opening resize inode"); in ext4_group_add()
1752 err = verify_group_input(sb, input); in ext4_group_add()
1756 err = ext4_alloc_flex_bg_array(sb, input->group + 1); in ext4_group_add()
1760 err = ext4_mb_alloc_groupinfo(sb, input->group + 1); in ext4_group_add()
1767 err = ext4_flex_group_add(sb, inode, &flex_gd); in ext4_group_add()
1776 static int ext4_group_extend_no_check(struct super_block *sb, in ext4_group_extend_no_check() argument
1779 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_group_extend_no_check()
1786 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, 3); in ext4_group_extend_no_check()
1789 ext4_warning(sb, "error %d on journal start", err); in ext4_group_extend_no_check()
1793 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in ext4_group_extend_no_check()
1794 err = ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh, in ext4_group_extend_no_check()
1797 ext4_warning(sb, "error %d on journal write access", err); in ext4_group_extend_no_check()
1801 lock_buffer(EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1804 ext4_superblock_csum_set(sb); in ext4_group_extend_no_check()
1805 unlock_buffer(EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1809 err = ext4_group_add_blocks(handle, sb, o_blocks_count, add); in ext4_group_extend_no_check()
1812 ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1821 if (test_opt(sb, DEBUG)) in ext4_group_extend_no_check()
1824 update_backups(sb, ext4_group_first_block_no(sb, 0), in ext4_group_extend_no_check()
1840 int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, in ext4_group_extend() argument
1851 if (test_opt(sb, DEBUG)) in ext4_group_extend()
1852 ext4_msg(sb, KERN_DEBUG, in ext4_group_extend()
1859 if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { in ext4_group_extend()
1860 ext4_msg(sb, KERN_ERR, in ext4_group_extend()
1867 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_group_extend()
1872 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_group_extend()
1875 ext4_warning(sb, "need to use ext2online to resize further"); in ext4_group_extend()
1879 add = EXT4_BLOCKS_PER_GROUP(sb) - last; in ext4_group_extend()
1882 ext4_warning(sb, "blocks_count overflow"); in ext4_group_extend()
1890 ext4_warning(sb, "will only finish group (%llu blocks, %u new)", in ext4_group_extend()
1894 bh = ext4_sb_bread(sb, o_blocks_count + add - 1, 0); in ext4_group_extend()
1896 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_group_extend()
1901 return ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_group_extend()
1905 static int num_desc_blocks(struct super_block *sb, ext4_group_t groups) in num_desc_blocks() argument
1907 return (groups + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); in num_desc_blocks()
1915 static int ext4_convert_meta_bg(struct super_block *sb, struct inode *inode) in ext4_convert_meta_bg() argument
1918 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_convert_meta_bg()
1925 ext4_msg(sb, KERN_INFO, "Converting file system to meta_bg"); in ext4_convert_meta_bg()
1928 ext4_error(sb, "Unexpected non-zero " in ext4_convert_meta_bg()
1950 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credits); in ext4_convert_meta_bg()
1955 err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh, in ext4_convert_meta_bg()
1961 ext4_clear_feature_resize_inode(sb); in ext4_convert_meta_bg()
1962 ext4_set_feature_meta_bg(sb); in ext4_convert_meta_bg()
1964 cpu_to_le32(num_desc_blocks(sb, sbi->s_groups_count)); in ext4_convert_meta_bg()
1965 ext4_superblock_csum_set(sb); in ext4_convert_meta_bg()
1970 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1984 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1992 ext4_error(sb, "corrupted/inconsistent resize inode"); in ext4_convert_meta_bg()
2002 int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) in ext4_resize_fs() argument
2005 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_fs()
2022 bh = ext4_sb_bread(sb, n_blocks_count - 1, 0); in ext4_resize_fs()
2024 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_resize_fs()
2036 if (ext4_has_feature_bigalloc(sb)) in ext4_resize_fs()
2037 n_blocks_count &= ~((1 << EXT4_CLUSTER_BITS(sb)) - 1); in ext4_resize_fs()
2042 ext4_msg(sb, KERN_INFO, "resizing filesystem from %llu " in ext4_resize_fs()
2047 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_resize_fs()
2055 n_group = ext4_get_group_number(sb, n_blocks_count - 1); in ext4_resize_fs()
2056 if (n_group >= (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { in ext4_resize_fs()
2057 ext4_warning(sb, "resize would cause inodes_count overflow"); in ext4_resize_fs()
2060 ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); in ext4_resize_fs()
2062 n_desc_blocks = num_desc_blocks(sb, n_group + 1); in ext4_resize_fs()
2063 o_desc_blocks = num_desc_blocks(sb, sbi->s_groups_count); in ext4_resize_fs()
2065 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_resize_fs()
2067 if (ext4_has_feature_resize_inode(sb)) { in ext4_resize_fs()
2069 ext4_error(sb, "resize_inode and meta_bg enabled " in ext4_resize_fs()
2078 n_group = n_desc_blocks * EXT4_DESC_PER_BLOCK(sb); in ext4_resize_fs()
2080 EXT4_BLOCKS_PER_GROUP(sb) + in ext4_resize_fs()
2086 resize_inode = ext4_iget(sb, EXT4_RESIZE_INO, in ext4_resize_fs()
2089 ext4_warning(sb, "Error opening resize inode"); in ext4_resize_fs()
2095 err = ext4_convert_meta_bg(sb, resize_inode); in ext4_resize_fs()
2116 if ((ext4_group_first_block_no(sb, n_group) + in ext4_resize_fs()
2117 ext4_group_overhead_blocks(sb, n_group) + 2 + in ext4_resize_fs()
2119 n_blocks_count = ext4_group_first_block_no(sb, n_group); in ext4_resize_fs()
2133 add = EXT4_C2B(sbi, EXT4_CLUSTERS_PER_GROUP(sb) - (offset + 1)); in ext4_resize_fs()
2135 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_resize_fs()
2143 err = ext4_alloc_flex_bg_array(sb, n_group + 1); in ext4_resize_fs()
2147 err = ext4_mb_alloc_groupinfo(sb, n_group + 1); in ext4_resize_fs()
2160 while (ext4_setup_next_flex_gd(sb, flex_gd, n_blocks_count)) { in ext4_resize_fs()
2163 ext4_msg(sb, KERN_INFO, in ext4_resize_fs()
2168 if (ext4_alloc_group_tables(sb, flex_gd, flexbg_size) != 0) in ext4_resize_fs()
2170 err = ext4_flex_group_add(sb, resize_inode, flex_gd); in ext4_resize_fs()
2193 ext4_warning(sb, "error (%d) occurred during " in ext4_resize_fs()
2195 ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", in ext4_resize_fs()