Lines Matching full:sb
47 int ext4_resize_begin(struct super_block *sb) in ext4_resize_begin() argument
49 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_begin()
59 if (EXT4_SB(sb)->s_es->s_reserved_gdt_blocks && in ext4_resize_begin()
60 !ext4_has_feature_resize_inode(sb)) { in ext4_resize_begin()
61 ext4_error(sb, "resize_inode disabled but reserved GDT blocks non-zero"); in ext4_resize_begin()
71 le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) { in ext4_resize_begin()
72 ext4_warning(sb, "won't resize using backup superblock at %llu", in ext4_resize_begin()
73 (unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr); in ext4_resize_begin()
81 if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) { in ext4_resize_begin()
82 ext4_warning(sb, "There are errors in the filesystem, " in ext4_resize_begin()
87 if (ext4_has_feature_sparse_super2(sb)) { in ext4_resize_begin()
88 ext4_msg(sb, KERN_ERR, "Online resizing not supported with sparse_super2"); in ext4_resize_begin()
93 &EXT4_SB(sb)->s_ext4_flags)) in ext4_resize_begin()
99 void ext4_resize_end(struct super_block *sb) in ext4_resize_end() argument
101 clear_bit_unlock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags); in ext4_resize_end()
105 static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, in ext4_meta_bg_first_group() argument
107 return (group >> EXT4_DESC_PER_BLOCK_BITS(sb)) << in ext4_meta_bg_first_group()
108 EXT4_DESC_PER_BLOCK_BITS(sb); in ext4_meta_bg_first_group()
111 static ext4_fsblk_t ext4_meta_bg_first_block_no(struct super_block *sb, in ext4_meta_bg_first_block_no() argument
113 group = ext4_meta_bg_first_group(sb, group); in ext4_meta_bg_first_block_no()
114 return ext4_group_first_block_no(sb, group); in ext4_meta_bg_first_block_no()
117 static ext4_grpblk_t ext4_group_overhead_blocks(struct super_block *sb, in ext4_group_overhead_blocks() argument
120 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
121 if (ext4_bg_has_super(sb, group)) in ext4_group_overhead_blocks()
123 le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in ext4_group_overhead_blocks()
130 static int verify_group_input(struct super_block *sb, in verify_group_input() argument
133 struct ext4_sb_info *sbi = EXT4_SB(sb); in verify_group_input()
146 ext4_warning(sb, "Cannot add at group %u (only %u groups)", in verify_group_input()
151 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
156 if (test_opt(sb, DEBUG)) in verify_group_input()
159 ext4_bg_has_super(sb, input->group) ? "normal" : in verify_group_input()
163 ext4_get_group_no_and_offset(sb, start, NULL, &offset); in verify_group_input()
165 ext4_warning(sb, "Last group not full"); in verify_group_input()
167 ext4_warning(sb, "Reserved blocks too high (%u)", in verify_group_input()
170 ext4_warning(sb, "Bad blocks count %u", in verify_group_input()
172 else if (IS_ERR(bh = ext4_sb_bread(sb, end - 1, 0))) { in verify_group_input()
175 ext4_warning(sb, "Cannot read last block (%llu)", in verify_group_input()
178 ext4_warning(sb, "Block bitmap not in group (block %llu)", in verify_group_input()
181 ext4_warning(sb, "Inode bitmap not in group (block %llu)", in verify_group_input()
185 ext4_warning(sb, "Inode table not in group (blocks %llu-%llu)", in verify_group_input()
188 ext4_warning(sb, "Block bitmap same as inode bitmap (%llu)", in verify_group_input()
191 ext4_warning(sb, "Block bitmap (%llu) in inode table " in verify_group_input()
196 ext4_warning(sb, "Inode bitmap (%llu) in inode table " in verify_group_input()
201 ext4_warning(sb, "Block bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
205 ext4_warning(sb, "Inode bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
210 ext4_warning(sb, "Inode table (%llu-%llu) overlaps GDT table " in verify_group_input()
299 * @sb: super block of fs to which the groups belongs
304 static int ext4_alloc_group_tables(struct super_block *sb, in ext4_alloc_group_tables() argument
332 start_blk = ext4_group_first_block_no(sb, src_group); in ext4_alloc_group_tables()
335 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
342 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
354 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
365 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
373 unsigned int itb = EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
379 group = ext4_get_group_number(sb, start_blk); in ext4_alloc_group_tables()
380 next_group_start = ext4_group_first_block_no(sb, group + 1); in ext4_alloc_group_tables()
392 start_blk += EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
398 EXT4_NUM_B2C(EXT4_SB(sb), in ext4_alloc_group_tables()
402 if (test_opt(sb, DEBUG)) { in ext4_alloc_group_tables()
413 ext4_bg_has_super(sb, group + i) ? "normal" : in ext4_alloc_group_tables()
423 static struct buffer_head *bclean(handle_t *handle, struct super_block *sb, in bclean() argument
429 bh = sb_getblk(sb, blk); in bclean()
437 memset(bh->b_data, 0, sb->s_blocksize); in bclean()
455 * @sb: super block
459 static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle, in set_flexbg_block_bitmap() argument
463 struct ext4_sb_info *sbi = EXT4_SB(sb); in set_flexbg_block_bitmap()
476 group = ext4_get_group_number(sb, EXT4_C2B(sbi, first_cluster)); in set_flexbg_block_bitmap()
477 start = EXT4_B2C(sbi, ext4_group_first_block_no(sb, group)); in set_flexbg_block_bitmap()
480 count2 = EXT4_CLUSTERS_PER_GROUP(sb) - (first_cluster - start); in set_flexbg_block_bitmap()
493 bh = sb_getblk(sb, flex_gd->groups[group].block_bitmap); in set_flexbg_block_bitmap()
530 static int setup_new_flex_group_blocks(struct super_block *sb, in setup_new_flex_group_blocks() argument
533 int group_table_count[] = {1, 1, EXT4_SB(sb)->s_itb_per_group}; in setup_new_flex_group_blocks()
536 struct ext4_sb_info *sbi = EXT4_SB(sb); in setup_new_flex_group_blocks()
550 meta_bg = ext4_has_feature_meta_bg(sb); in setup_new_flex_group_blocks()
553 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in setup_new_flex_group_blocks()
562 gdblocks = ext4_bg_num_gdb(sb, group); in setup_new_flex_group_blocks()
563 start = ext4_group_first_block_no(sb, group); in setup_new_flex_group_blocks()
565 if (meta_bg == 0 && !ext4_bg_has_super(sb, group)) in setup_new_flex_group_blocks()
571 block = start + ext4_bg_has_super(sb, group); in setup_new_flex_group_blocks()
581 gdb = sb_getblk(sb, block); in setup_new_flex_group_blocks()
608 if (ext4_bg_has_super(sb, group)) { in setup_new_flex_group_blocks()
609 err = sb_issue_zeroout(sb, gdblocks + start + 1, in setup_new_flex_group_blocks()
624 err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, in setup_new_flex_group_blocks()
639 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
644 overhead = ext4_group_overhead_blocks(sb, group); in setup_new_flex_group_blocks()
652 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
668 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
674 ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), in setup_new_flex_group_blocks()
675 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
693 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
707 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
733 static unsigned ext4_list_backups(struct super_block *sb, unsigned *three, in ext4_list_backups() argument
740 if (!ext4_has_feature_sparse_super(sb)) { in ext4_list_backups()
766 static int verify_reserved_gdb(struct super_block *sb, in verify_reserved_gdb() argument
778 while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) { in verify_reserved_gdb()
780 grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ in verify_reserved_gdb()
781 ext4_warning(sb, "reserved GDT %llu" in verify_reserved_gdb()
785 (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) + in verify_reserved_gdb()
789 if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb)) in verify_reserved_gdb()
812 struct super_block *sb = inode->i_sb; in add_new_gdb() local
813 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in add_new_gdb()
814 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb()
815 ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num; in add_new_gdb()
824 if (test_opt(sb, DEBUG)) in add_new_gdb()
829 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb()
833 gdbackups = verify_reserved_gdb(sb, group, gdb_bh); in add_new_gdb()
840 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in add_new_gdb()
848 if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) { in add_new_gdb()
849 ext4_warning(sb, "new group %u GDT block %llu not reserved", in add_new_gdb()
855 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in add_new_gdb()
856 err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); in add_new_gdb()
868 ext4_std_error(sb, err); in add_new_gdb()
881 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb()
895 data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0; in add_new_gdb()
898 ext4_std_error(sb, err); in add_new_gdb()
901 inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> in add_new_gdb()
902 (9 - EXT4_SB(sb)->s_cluster_bits); in add_new_gdb()
904 memset(gdb_bh->b_data, 0, sb->s_blocksize); in add_new_gdb()
907 ext4_std_error(sb, err); in add_new_gdb()
914 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb()
916 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb()
919 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb()
920 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb()
923 lock_buffer(EXT4_SB(sb)->s_sbh); in add_new_gdb()
925 ext4_superblock_csum_set(sb); in add_new_gdb()
926 unlock_buffer(EXT4_SB(sb)->s_sbh); in add_new_gdb()
927 err = ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh); in add_new_gdb()
929 ext4_std_error(sb, err); in add_new_gdb()
944 static int add_new_gdb_meta_bg(struct super_block *sb, in add_new_gdb_meta_bg() argument
949 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb_meta_bg()
952 gdblock = ext4_meta_bg_first_block_no(sb, group) + in add_new_gdb_meta_bg()
953 ext4_bg_has_super(sb, group); in add_new_gdb_meta_bg()
954 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb_meta_bg()
962 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb_meta_bg()
968 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb_meta_bg()
970 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb_meta_bg()
982 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb_meta_bg()
983 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb_meta_bg()
1004 struct super_block *sb = inode->i_sb; in reserve_backup_gdb() local
1005 int reserved_gdb =le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in reserve_backup_gdb()
1006 int cluster_bits = EXT4_SB(sb)->s_cluster_bits; in reserve_backup_gdb()
1021 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in reserve_backup_gdb()
1028 blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count; in reserve_backup_gdb()
1029 data = (__le32 *)dind->b_data + (EXT4_SB(sb)->s_gdb_count % in reserve_backup_gdb()
1030 EXT4_ADDR_PER_BLOCK(sb)); in reserve_backup_gdb()
1031 end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb); in reserve_backup_gdb()
1036 ext4_warning(sb, "reserved block %llu" in reserve_backup_gdb()
1043 primary[res] = ext4_sb_bread(sb, blk, 0); in reserve_backup_gdb()
1049 gdbackups = verify_reserved_gdb(sb, group, primary[res]); in reserve_backup_gdb()
1072 blk = group * EXT4_BLOCKS_PER_GROUP(sb); in reserve_backup_gdb()
1085 inode->i_blocks += reserved_gdb * sb->s_blocksize >> (9 - cluster_bits); in reserve_backup_gdb()
1115 static void update_backups(struct super_block *sb, sector_t blk_off, char *data, in update_backups() argument
1118 struct ext4_sb_info *sbi = EXT4_SB(sb); in update_backups()
1120 const int bpg = EXT4_BLOCKS_PER_GROUP(sb); in update_backups()
1125 int rest = sb->s_blocksize - size; in update_backups()
1129 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in update_backups()
1137 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1140 group = ext4_get_group_number(sb, blk_off) + 1; in update_backups()
1141 last = (ext4_group_t)(group + EXT4_DESC_PER_BLOCK(sb) - 2); in update_backups()
1156 backup_block = (ext4_group_first_block_no(sb, group) + in update_backups()
1157 ext4_bg_has_super(sb, group)); in update_backups()
1159 bh = sb_getblk(sb, backup_block); in update_backups()
1166 ext4_group_first_block_no(sb, group)); in update_backups()
1180 ext4_std_error(sb, err); in update_backups()
1184 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1205 ext4_warning(sb, "can't update backup for group %u (err %d), " in update_backups()
1218 * @sb: super block
1223 static int ext4_add_new_descs(handle_t *handle, struct super_block *sb, in ext4_add_new_descs() argument
1227 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_add_new_descs()
1233 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_add_new_descs()
1235 int reserved_gdb = ext4_bg_has_super(sb, group) ? in ext4_add_new_descs()
1238 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1239 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1253 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) in ext4_add_new_descs()
1256 err = add_new_gdb_meta_bg(sb, handle, group); in ext4_add_new_descs()
1266 static struct buffer_head *ext4_get_bitmap(struct super_block *sb, __u64 block) in ext4_get_bitmap() argument
1268 struct buffer_head *bh = sb_getblk(sb, block); in ext4_get_bitmap()
1281 static int ext4_set_bitmap_checksums(struct super_block *sb, in ext4_set_bitmap_checksums() argument
1288 if (!ext4_has_metadata_csum(sb)) in ext4_set_bitmap_checksums()
1291 bh = ext4_get_bitmap(sb, group_data->inode_bitmap); in ext4_set_bitmap_checksums()
1294 ext4_inode_bitmap_csum_set(sb, group, gdp, bh, in ext4_set_bitmap_checksums()
1295 EXT4_INODES_PER_GROUP(sb) / 8); in ext4_set_bitmap_checksums()
1298 bh = ext4_get_bitmap(sb, group_data->block_bitmap); in ext4_set_bitmap_checksums()
1301 ext4_block_bitmap_csum_set(sb, group, gdp, bh); in ext4_set_bitmap_checksums()
1310 static int ext4_setup_new_descs(handle_t *handle, struct super_block *sb, in ext4_setup_new_descs() argument
1315 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_new_descs()
1325 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1326 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1334 gdb_off * EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1336 memset(gdp, 0, EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1337 ext4_block_bitmap_set(sb, gdp, group_data->block_bitmap); in ext4_setup_new_descs()
1338 ext4_inode_bitmap_set(sb, gdp, group_data->inode_bitmap); in ext4_setup_new_descs()
1339 err = ext4_set_bitmap_checksums(sb, group, gdp, group_data); in ext4_setup_new_descs()
1341 ext4_std_error(sb, err); in ext4_setup_new_descs()
1345 ext4_inode_table_set(sb, gdp, group_data->inode_table); in ext4_setup_new_descs()
1346 ext4_free_group_clusters_set(sb, gdp, in ext4_setup_new_descs()
1348 ext4_free_inodes_set(sb, gdp, EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1349 if (ext4_has_group_desc_csum(sb)) in ext4_setup_new_descs()
1350 ext4_itable_unused_set(sb, gdp, in ext4_setup_new_descs()
1351 EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1353 ext4_group_desc_csum_set(sb, group, gdp); in ext4_setup_new_descs()
1357 ext4_std_error(sb, err); in ext4_setup_new_descs()
1365 err = ext4_mb_add_groupinfo(sb, group, gdp); in ext4_setup_new_descs()
1376 * @sb: super block
1379 static void ext4_update_super(struct super_block *sb, in ext4_update_super() argument
1386 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_update_super()
1414 le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1416 le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1443 (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); in ext4_update_super()
1449 ext4_superblock_csum_set(sb); in ext4_update_super()
1456 EXT4_INODES_PER_GROUP(sb) * flex_gd->count); in ext4_update_super()
1460 if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) { in ext4_update_super()
1468 atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count, in ext4_update_super()
1475 ext4_calculate_overhead(sb); in ext4_update_super()
1478 if (test_opt(sb, DEBUG)) in ext4_update_super()
1488 static int ext4_flex_group_add(struct super_block *sb, in ext4_flex_group_add() argument
1492 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_flex_group_add()
1505 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_flex_group_add()
1508 err = setup_new_flex_group_blocks(sb, flex_gd); in ext4_flex_group_add()
1518 credit = 3; /* sb, resize inode, resize inode dindirect */ in ext4_flex_group_add()
1520 credit += 1 + DIV_ROUND_UP(flex_gd->count, EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1522 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credit); in ext4_flex_group_add()
1535 err = ext4_add_new_descs(handle, sb, group, in ext4_flex_group_add()
1540 err = ext4_setup_new_descs(handle, sb, flex_gd); in ext4_flex_group_add()
1544 ext4_update_super(sb, flex_gd); in ext4_flex_group_add()
1554 int gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_flex_group_add()
1556 EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1557 int meta_bg = ext4_has_feature_meta_bg(sb) && in ext4_flex_group_add()
1560 ext4_group_first_block_no(sb, 0); in ext4_flex_group_add()
1563 update_backups(sb, ext4_group_first_block_no(sb, 0), in ext4_flex_group_add()
1572 update_backups(sb, gdb_bh->b_blocknr - padding_blocks, in ext4_flex_group_add()
1581 static int ext4_setup_next_flex_gd(struct super_block *sb, in ext4_setup_next_flex_gd() argument
1585 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_next_flex_gd()
1596 clusters_per_group = EXT4_CLUSTERS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1603 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_setup_next_flex_gd()
1605 ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &last); in ext4_setup_next_flex_gd()
1617 group_data[i].blocks_count = EXT4_BLOCKS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1618 overhead = ext4_group_overhead_blocks(sb, group + i); in ext4_setup_next_flex_gd()
1620 group_data[i].free_clusters_count = EXT4_CLUSTERS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1621 if (ext4_has_group_desc_csum(sb)) { in ext4_setup_next_flex_gd()
1624 if (!test_opt(sb, INIT_INODE_TABLE)) in ext4_setup_next_flex_gd()
1630 if (last_group == n_group && ext4_has_group_desc_csum(sb)) in ext4_setup_next_flex_gd()
1656 int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) in ext4_group_add() argument
1659 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_group_add()
1661 int reserved_gdb = ext4_bg_has_super(sb, input->group) ? in ext4_group_add()
1668 gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb); in ext4_group_add()
1670 if (gdb_off == 0 && !ext4_has_feature_sparse_super(sb)) { in ext4_group_add()
1671 ext4_warning(sb, "Can't resize non-sparse filesystem further"); in ext4_group_add()
1677 ext4_warning(sb, "blocks_count overflow"); in ext4_group_add()
1681 if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) < in ext4_group_add()
1683 ext4_warning(sb, "inodes_count overflow"); in ext4_group_add()
1688 if (!ext4_has_feature_resize_inode(sb) || in ext4_group_add()
1690 ext4_warning(sb, in ext4_group_add()
1694 inode = ext4_iget(sb, EXT4_RESIZE_INO, EXT4_IGET_SPECIAL); in ext4_group_add()
1696 ext4_warning(sb, "Error opening resize inode"); in ext4_group_add()
1702 err = verify_group_input(sb, input); in ext4_group_add()
1706 err = ext4_alloc_flex_bg_array(sb, input->group + 1); in ext4_group_add()
1710 err = ext4_mb_alloc_groupinfo(sb, input->group + 1); in ext4_group_add()
1717 err = ext4_flex_group_add(sb, inode, &flex_gd); in ext4_group_add()
1726 static int ext4_group_extend_no_check(struct super_block *sb, in ext4_group_extend_no_check() argument
1729 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_group_extend_no_check()
1736 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, 3); in ext4_group_extend_no_check()
1739 ext4_warning(sb, "error %d on journal start", err); in ext4_group_extend_no_check()
1743 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in ext4_group_extend_no_check()
1744 err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1746 ext4_warning(sb, "error %d on journal write access", err); in ext4_group_extend_no_check()
1750 lock_buffer(EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1753 ext4_superblock_csum_set(sb); in ext4_group_extend_no_check()
1754 unlock_buffer(EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1758 err = ext4_group_add_blocks(handle, sb, o_blocks_count, add); in ext4_group_extend_no_check()
1761 ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1770 if (test_opt(sb, DEBUG)) in ext4_group_extend_no_check()
1773 update_backups(sb, ext4_group_first_block_no(sb, 0), in ext4_group_extend_no_check()
1789 int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, in ext4_group_extend() argument
1801 if (test_opt(sb, DEBUG)) in ext4_group_extend()
1802 ext4_msg(sb, KERN_DEBUG, in ext4_group_extend()
1809 if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { in ext4_group_extend()
1810 ext4_msg(sb, KERN_ERR, in ext4_group_extend()
1817 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_group_extend()
1822 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_group_extend()
1825 ext4_warning(sb, "need to use ext2online to resize further"); in ext4_group_extend()
1829 add = EXT4_BLOCKS_PER_GROUP(sb) - last; in ext4_group_extend()
1832 ext4_warning(sb, "blocks_count overflow"); in ext4_group_extend()
1840 ext4_warning(sb, "will only finish group (%llu blocks, %u new)", in ext4_group_extend()
1844 bh = ext4_sb_bread(sb, o_blocks_count + add - 1, 0); in ext4_group_extend()
1846 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_group_extend()
1851 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_group_extend()
1856 static int num_desc_blocks(struct super_block *sb, ext4_group_t groups) in num_desc_blocks() argument
1858 return (groups + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); in num_desc_blocks()
1866 static int ext4_convert_meta_bg(struct super_block *sb, struct inode *inode) in ext4_convert_meta_bg() argument
1869 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_convert_meta_bg()
1876 ext4_msg(sb, KERN_INFO, "Converting file system to meta_bg"); in ext4_convert_meta_bg()
1879 ext4_error(sb, "Unexpected non-zero " in ext4_convert_meta_bg()
1901 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credits); in ext4_convert_meta_bg()
1911 ext4_clear_feature_resize_inode(sb); in ext4_convert_meta_bg()
1912 ext4_set_feature_meta_bg(sb); in ext4_convert_meta_bg()
1914 cpu_to_le32(num_desc_blocks(sb, sbi->s_groups_count)); in ext4_convert_meta_bg()
1915 ext4_superblock_csum_set(sb); in ext4_convert_meta_bg()
1920 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1934 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1942 ext4_error(sb, "corrupted/inconsistent resize inode"); in ext4_convert_meta_bg()
1949 * @sb: super block of the fs to be resized
1952 int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) in ext4_resize_fs() argument
1955 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_fs()
1972 bh = ext4_sb_bread(sb, n_blocks_count - 1, 0); in ext4_resize_fs()
1974 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_resize_fs()
1986 if (ext4_has_feature_bigalloc(sb)) in ext4_resize_fs()
1987 n_blocks_count &= ~((1 << EXT4_CLUSTER_BITS(sb)) - 1); in ext4_resize_fs()
1992 ext4_msg(sb, KERN_INFO, "resizing filesystem from %llu " in ext4_resize_fs()
1997 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_resize_fs()
2005 n_group = ext4_get_group_number(sb, n_blocks_count - 1); in ext4_resize_fs()
2006 if (n_group >= (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { in ext4_resize_fs()
2007 ext4_warning(sb, "resize would cause inodes_count overflow"); in ext4_resize_fs()
2010 ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); in ext4_resize_fs()
2012 n_desc_blocks = num_desc_blocks(sb, n_group + 1); in ext4_resize_fs()
2013 o_desc_blocks = num_desc_blocks(sb, sbi->s_groups_count); in ext4_resize_fs()
2015 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_resize_fs()
2017 if (ext4_has_feature_resize_inode(sb)) { in ext4_resize_fs()
2019 ext4_error(sb, "resize_inode and meta_bg enabled " in ext4_resize_fs()
2028 n_group = n_desc_blocks * EXT4_DESC_PER_BLOCK(sb); in ext4_resize_fs()
2030 EXT4_BLOCKS_PER_GROUP(sb) + in ext4_resize_fs()
2036 resize_inode = ext4_iget(sb, EXT4_RESIZE_INO, in ext4_resize_fs()
2039 ext4_warning(sb, "Error opening resize inode"); in ext4_resize_fs()
2045 err = ext4_convert_meta_bg(sb, resize_inode); in ext4_resize_fs()
2066 if ((ext4_group_first_block_no(sb, n_group) + in ext4_resize_fs()
2067 ext4_group_overhead_blocks(sb, n_group) + 2 + in ext4_resize_fs()
2069 n_blocks_count = ext4_group_first_block_no(sb, n_group); in ext4_resize_fs()
2083 add = EXT4_C2B(sbi, EXT4_CLUSTERS_PER_GROUP(sb) - (offset + 1)); in ext4_resize_fs()
2085 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_resize_fs()
2093 err = ext4_alloc_flex_bg_array(sb, n_group + 1); in ext4_resize_fs()
2097 err = ext4_mb_alloc_groupinfo(sb, n_group + 1); in ext4_resize_fs()
2110 while (ext4_setup_next_flex_gd(sb, flex_gd, n_blocks_count)) { in ext4_resize_fs()
2113 ext4_msg(sb, KERN_INFO, in ext4_resize_fs()
2118 if (ext4_alloc_group_tables(sb, flex_gd, flexbg_size) != 0) in ext4_resize_fs()
2120 err = ext4_flex_group_add(sb, resize_inode, flex_gd); in ext4_resize_fs()
2143 ext4_warning(sb, "error (%d) occurred during " in ext4_resize_fs()
2145 ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", in ext4_resize_fs()