Lines Matching refs: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()
61 le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) { in ext4_resize_begin()
62 ext4_warning(sb, "won't resize using backup superblock at %llu", in ext4_resize_begin()
63 (unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr); in ext4_resize_begin()
71 if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) { in ext4_resize_begin()
72 ext4_warning(sb, "There are errors in the filesystem, " in ext4_resize_begin()
78 &EXT4_SB(sb)->s_ext4_flags)) in ext4_resize_begin()
84 void ext4_resize_end(struct super_block *sb) in ext4_resize_end() argument
86 clear_bit_unlock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags); in ext4_resize_end()
90 static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, in ext4_meta_bg_first_group() argument
92 return (group >> EXT4_DESC_PER_BLOCK_BITS(sb)) << in ext4_meta_bg_first_group()
93 EXT4_DESC_PER_BLOCK_BITS(sb); in ext4_meta_bg_first_group()
96 static ext4_fsblk_t ext4_meta_bg_first_block_no(struct super_block *sb, in ext4_meta_bg_first_block_no() argument
98 group = ext4_meta_bg_first_group(sb, group); in ext4_meta_bg_first_block_no()
99 return ext4_group_first_block_no(sb, group); in ext4_meta_bg_first_block_no()
102 static ext4_grpblk_t ext4_group_overhead_blocks(struct super_block *sb, in ext4_group_overhead_blocks() argument
105 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
106 if (ext4_bg_has_super(sb, group)) in ext4_group_overhead_blocks()
108 le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in ext4_group_overhead_blocks()
115 static int verify_group_input(struct super_block *sb, in verify_group_input() argument
118 struct ext4_sb_info *sbi = EXT4_SB(sb); in verify_group_input()
131 ext4_warning(sb, "Cannot add at group %u (only %u groups)", in verify_group_input()
136 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
141 if (test_opt(sb, DEBUG)) in verify_group_input()
144 ext4_bg_has_super(sb, input->group) ? "normal" : in verify_group_input()
148 ext4_get_group_no_and_offset(sb, start, NULL, &offset); in verify_group_input()
150 ext4_warning(sb, "Last group not full"); in verify_group_input()
152 ext4_warning(sb, "Reserved blocks too high (%u)", in verify_group_input()
155 ext4_warning(sb, "Bad blocks count %u", in verify_group_input()
157 else if (IS_ERR(bh = ext4_sb_bread(sb, end - 1, 0))) { in verify_group_input()
160 ext4_warning(sb, "Cannot read last block (%llu)", in verify_group_input()
163 ext4_warning(sb, "Block bitmap not in group (block %llu)", in verify_group_input()
166 ext4_warning(sb, "Inode bitmap not in group (block %llu)", in verify_group_input()
170 ext4_warning(sb, "Inode table not in group (blocks %llu-%llu)", in verify_group_input()
173 ext4_warning(sb, "Block bitmap same as inode bitmap (%llu)", in verify_group_input()
176 ext4_warning(sb, "Block bitmap (%llu) in inode table " in verify_group_input()
181 ext4_warning(sb, "Inode bitmap (%llu) in inode table " in verify_group_input()
186 ext4_warning(sb, "Block bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
190 ext4_warning(sb, "Inode bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
195 ext4_warning(sb, "Inode table (%llu-%llu) overlaps GDT table " in verify_group_input()
276 static int ext4_alloc_group_tables(struct super_block *sb, in ext4_alloc_group_tables() argument
303 start_blk = ext4_group_first_block_no(sb, src_group); in ext4_alloc_group_tables()
306 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
313 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
325 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
336 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
344 unsigned int itb = EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
350 group = ext4_get_group_number(sb, start_blk); in ext4_alloc_group_tables()
351 next_group_start = ext4_group_first_block_no(sb, group + 1); in ext4_alloc_group_tables()
363 start_blk += EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
366 if (test_opt(sb, DEBUG)) { in ext4_alloc_group_tables()
377 ext4_bg_has_super(sb, group + i) ? "normal" : in ext4_alloc_group_tables()
386 static struct buffer_head *bclean(handle_t *handle, struct super_block *sb, in bclean() argument
392 bh = sb_getblk(sb, blk); in bclean()
400 memset(bh->b_data, 0, sb->s_blocksize); in bclean()
440 static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle, in set_flexbg_block_bitmap() argument
453 group = ext4_get_group_number(sb, block); in set_flexbg_block_bitmap()
454 start = ext4_group_first_block_no(sb, group); in set_flexbg_block_bitmap()
457 count2 = EXT4_BLOCKS_PER_GROUP(sb) - (block - start); in set_flexbg_block_bitmap()
470 bh = sb_getblk(sb, flex_gd->groups[group].block_bitmap); in set_flexbg_block_bitmap()
507 static int setup_new_flex_group_blocks(struct super_block *sb, in setup_new_flex_group_blocks() argument
510 int group_table_count[] = {1, 1, EXT4_SB(sb)->s_itb_per_group}; in setup_new_flex_group_blocks()
513 struct ext4_sb_info *sbi = EXT4_SB(sb); in setup_new_flex_group_blocks()
527 meta_bg = ext4_has_feature_meta_bg(sb); in setup_new_flex_group_blocks()
530 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in setup_new_flex_group_blocks()
539 gdblocks = ext4_bg_num_gdb(sb, group); in setup_new_flex_group_blocks()
540 start = ext4_group_first_block_no(sb, group); in setup_new_flex_group_blocks()
542 if (meta_bg == 0 && !ext4_bg_has_super(sb, group)) in setup_new_flex_group_blocks()
547 first_group = ext4_meta_bg_first_group(sb, group); in setup_new_flex_group_blocks()
549 first_group != group + EXT4_DESC_PER_BLOCK(sb) - 1) in setup_new_flex_group_blocks()
553 block = start + ext4_bg_has_super(sb, group); in setup_new_flex_group_blocks()
563 gdb = sb_getblk(sb, block); in setup_new_flex_group_blocks()
590 if (ext4_bg_has_super(sb, group)) { in setup_new_flex_group_blocks()
591 err = sb_issue_zeroout(sb, gdblocks + start + 1, in setup_new_flex_group_blocks()
606 err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, in setup_new_flex_group_blocks()
621 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
626 overhead = ext4_group_overhead_blocks(sb, group); in setup_new_flex_group_blocks()
633 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
649 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
655 ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), in setup_new_flex_group_blocks()
656 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
674 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
684 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
706 static unsigned ext4_list_backups(struct super_block *sb, unsigned *three, in ext4_list_backups() argument
713 if (!ext4_has_feature_sparse_super(sb)) { in ext4_list_backups()
739 static int verify_reserved_gdb(struct super_block *sb, in verify_reserved_gdb() argument
751 while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) { in verify_reserved_gdb()
753 grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ in verify_reserved_gdb()
754 ext4_warning(sb, "reserved GDT %llu" in verify_reserved_gdb()
758 (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) + in verify_reserved_gdb()
762 if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb)) in verify_reserved_gdb()
785 struct super_block *sb = inode->i_sb; in add_new_gdb() local
786 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in add_new_gdb()
787 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb()
788 ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num; in add_new_gdb()
797 if (test_opt(sb, DEBUG)) in add_new_gdb()
802 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb()
806 gdbackups = verify_reserved_gdb(sb, group, gdb_bh); in add_new_gdb()
813 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in add_new_gdb()
821 if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) { in add_new_gdb()
822 ext4_warning(sb, "new group %u GDT block %llu not reserved", in add_new_gdb()
828 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in add_new_gdb()
829 err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); in add_new_gdb()
841 ext4_std_error(sb, err); in add_new_gdb()
853 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb()
867 data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0; in add_new_gdb()
870 ext4_std_error(sb, err); in add_new_gdb()
873 inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> 9; in add_new_gdb()
875 memset(gdb_bh->b_data, 0, sb->s_blocksize); in add_new_gdb()
878 ext4_std_error(sb, err); in add_new_gdb()
885 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb()
887 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb()
890 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb()
891 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb()
895 err = ext4_handle_dirty_super(handle, sb); in add_new_gdb()
897 ext4_std_error(sb, err); in add_new_gdb()
912 static int add_new_gdb_meta_bg(struct super_block *sb, in add_new_gdb_meta_bg() argument
917 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb_meta_bg()
920 gdblock = ext4_meta_bg_first_block_no(sb, group) + in add_new_gdb_meta_bg()
921 ext4_bg_has_super(sb, group); in add_new_gdb_meta_bg()
922 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb_meta_bg()
931 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb_meta_bg()
937 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb_meta_bg()
939 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb_meta_bg()
951 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb_meta_bg()
952 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb_meta_bg()
973 struct super_block *sb = inode->i_sb; in reserve_backup_gdb() local
974 int reserved_gdb =le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in reserve_backup_gdb()
989 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in reserve_backup_gdb()
996 blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count; in reserve_backup_gdb()
997 data = (__le32 *)dind->b_data + (EXT4_SB(sb)->s_gdb_count % in reserve_backup_gdb()
998 EXT4_ADDR_PER_BLOCK(sb)); in reserve_backup_gdb()
999 end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb); in reserve_backup_gdb()
1004 ext4_warning(sb, "reserved block %llu" in reserve_backup_gdb()
1011 primary[res] = ext4_sb_bread(sb, blk, 0); in reserve_backup_gdb()
1017 gdbackups = verify_reserved_gdb(sb, group, primary[res]); in reserve_backup_gdb()
1040 blk = group * EXT4_BLOCKS_PER_GROUP(sb); in reserve_backup_gdb()
1052 inode->i_blocks += reserved_gdb * sb->s_blocksize >> 9; in reserve_backup_gdb()
1082 static void update_backups(struct super_block *sb, sector_t blk_off, char *data, in update_backups() argument
1085 struct ext4_sb_info *sbi = EXT4_SB(sb); in update_backups()
1087 const int bpg = EXT4_BLOCKS_PER_GROUP(sb); in update_backups()
1092 int rest = sb->s_blocksize - size; in update_backups()
1096 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in update_backups()
1104 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1107 group = ext4_get_group_number(sb, blk_off) + 1; in update_backups()
1108 last = (ext4_group_t)(group + EXT4_DESC_PER_BLOCK(sb) - 2); in update_backups()
1125 backup_block = (ext4_group_first_block_no(sb, group) + in update_backups()
1126 ext4_bg_has_super(sb, group)); in update_backups()
1128 bh = sb_getblk(sb, backup_block); in update_backups()
1135 ext4_group_first_block_no(sb, group)); in update_backups()
1149 ext4_std_error(sb, err); in update_backups()
1153 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1174 ext4_warning(sb, "can't update backup for group %u (err %d), " in update_backups()
1192 static int ext4_add_new_descs(handle_t *handle, struct super_block *sb, in ext4_add_new_descs() argument
1196 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_add_new_descs()
1202 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_add_new_descs()
1204 int reserved_gdb = ext4_bg_has_super(sb, group) ? in ext4_add_new_descs()
1207 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1208 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1222 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) in ext4_add_new_descs()
1225 err = add_new_gdb_meta_bg(sb, handle, group); in ext4_add_new_descs()
1235 static struct buffer_head *ext4_get_bitmap(struct super_block *sb, __u64 block) in ext4_get_bitmap() argument
1237 struct buffer_head *bh = sb_getblk(sb, block); in ext4_get_bitmap()
1250 static int ext4_set_bitmap_checksums(struct super_block *sb, in ext4_set_bitmap_checksums() argument
1257 if (!ext4_has_metadata_csum(sb)) in ext4_set_bitmap_checksums()
1260 bh = ext4_get_bitmap(sb, group_data->inode_bitmap); in ext4_set_bitmap_checksums()
1263 ext4_inode_bitmap_csum_set(sb, group, gdp, bh, in ext4_set_bitmap_checksums()
1264 EXT4_INODES_PER_GROUP(sb) / 8); in ext4_set_bitmap_checksums()
1267 bh = ext4_get_bitmap(sb, group_data->block_bitmap); in ext4_set_bitmap_checksums()
1270 ext4_block_bitmap_csum_set(sb, group, gdp, bh); in ext4_set_bitmap_checksums()
1279 static int ext4_setup_new_descs(handle_t *handle, struct super_block *sb, in ext4_setup_new_descs() argument
1284 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_new_descs()
1294 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1295 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1303 gdb_off * EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1305 memset(gdp, 0, EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1306 ext4_block_bitmap_set(sb, gdp, group_data->block_bitmap); in ext4_setup_new_descs()
1307 ext4_inode_bitmap_set(sb, gdp, group_data->inode_bitmap); in ext4_setup_new_descs()
1308 err = ext4_set_bitmap_checksums(sb, group, gdp, group_data); in ext4_setup_new_descs()
1310 ext4_std_error(sb, err); in ext4_setup_new_descs()
1314 ext4_inode_table_set(sb, gdp, group_data->inode_table); in ext4_setup_new_descs()
1315 ext4_free_group_clusters_set(sb, gdp, in ext4_setup_new_descs()
1317 ext4_free_inodes_set(sb, gdp, EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1318 if (ext4_has_group_desc_csum(sb)) in ext4_setup_new_descs()
1319 ext4_itable_unused_set(sb, gdp, in ext4_setup_new_descs()
1320 EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1322 ext4_group_desc_csum_set(sb, group, gdp); in ext4_setup_new_descs()
1326 ext4_std_error(sb, err); in ext4_setup_new_descs()
1334 err = ext4_mb_add_groupinfo(sb, group, gdp); in ext4_setup_new_descs()
1348 static void ext4_update_super(struct super_block *sb, in ext4_update_super() argument
1355 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_update_super()
1382 le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1384 le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1411 (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); in ext4_update_super()
1422 EXT4_INODES_PER_GROUP(sb) * flex_gd->count); in ext4_update_super()
1426 if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) { in ext4_update_super()
1434 atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count, in ext4_update_super()
1441 ext4_calculate_overhead(sb); in ext4_update_super()
1443 if (test_opt(sb, DEBUG)) in ext4_update_super()
1453 static int ext4_flex_group_add(struct super_block *sb, in ext4_flex_group_add() argument
1457 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_flex_group_add()
1470 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_flex_group_add()
1473 err = setup_new_flex_group_blocks(sb, flex_gd); in ext4_flex_group_add()
1485 credit += 1 + DIV_ROUND_UP(flex_gd->count, EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1487 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credit); in ext4_flex_group_add()
1499 BUG_ON(group != EXT4_SB(sb)->s_groups_count); in ext4_flex_group_add()
1500 err = ext4_add_new_descs(handle, sb, group, in ext4_flex_group_add()
1505 err = ext4_setup_new_descs(handle, sb, flex_gd); in ext4_flex_group_add()
1509 ext4_update_super(sb, flex_gd); in ext4_flex_group_add()
1511 err = ext4_handle_dirty_super(handle, sb); in ext4_flex_group_add()
1519 int gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_flex_group_add()
1521 EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1522 int meta_bg = ext4_has_feature_meta_bg(sb); in ext4_flex_group_add()
1525 update_backups(sb, sbi->s_sbh->b_blocknr, (char *)es, in ext4_flex_group_add()
1534 update_backups(sb, gdb_bh->b_blocknr, gdb_bh->b_data, in ext4_flex_group_add()
1543 static int ext4_setup_next_flex_gd(struct super_block *sb, in ext4_setup_next_flex_gd() argument
1548 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_setup_next_flex_gd()
1558 blocks_per_group = EXT4_BLOCKS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1565 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_setup_next_flex_gd()
1567 ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &last); in ext4_setup_next_flex_gd()
1580 overhead = ext4_group_overhead_blocks(sb, group + i); in ext4_setup_next_flex_gd()
1582 if (ext4_has_group_desc_csum(sb)) { in ext4_setup_next_flex_gd()
1585 if (!test_opt(sb, INIT_INODE_TABLE)) in ext4_setup_next_flex_gd()
1591 if (last_group == n_group && ext4_has_group_desc_csum(sb)) in ext4_setup_next_flex_gd()
1617 int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) in ext4_group_add() argument
1620 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_group_add()
1622 int reserved_gdb = ext4_bg_has_super(sb, input->group) ? in ext4_group_add()
1629 gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb); in ext4_group_add()
1631 if (gdb_off == 0 && !ext4_has_feature_sparse_super(sb)) { in ext4_group_add()
1632 ext4_warning(sb, "Can't resize non-sparse filesystem further"); in ext4_group_add()
1638 ext4_warning(sb, "blocks_count overflow"); in ext4_group_add()
1642 if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) < in ext4_group_add()
1644 ext4_warning(sb, "inodes_count overflow"); in ext4_group_add()
1649 if (!ext4_has_feature_resize_inode(sb) || in ext4_group_add()
1651 ext4_warning(sb, in ext4_group_add()
1655 inode = ext4_iget(sb, EXT4_RESIZE_INO); in ext4_group_add()
1657 ext4_warning(sb, "Error opening resize inode"); in ext4_group_add()
1663 err = verify_group_input(sb, input); in ext4_group_add()
1667 err = ext4_alloc_flex_bg_array(sb, input->group + 1); in ext4_group_add()
1671 err = ext4_mb_alloc_groupinfo(sb, input->group + 1); in ext4_group_add()
1678 err = ext4_flex_group_add(sb, inode, &flex_gd); in ext4_group_add()
1687 static int ext4_group_extend_no_check(struct super_block *sb, in ext4_group_extend_no_check() argument
1690 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_group_extend_no_check()
1697 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, 3); in ext4_group_extend_no_check()
1700 ext4_warning(sb, "error %d on journal start", err); in ext4_group_extend_no_check()
1704 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in ext4_group_extend_no_check()
1705 err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1707 ext4_warning(sb, "error %d on journal write access", err); in ext4_group_extend_no_check()
1716 err = ext4_group_add_blocks(handle, sb, o_blocks_count, add); in ext4_group_extend_no_check()
1719 ext4_handle_dirty_super(handle, sb); in ext4_group_extend_no_check()
1728 if (test_opt(sb, DEBUG)) in ext4_group_extend_no_check()
1731 update_backups(sb, EXT4_SB(sb)->s_sbh->b_blocknr, in ext4_group_extend_no_check()
1747 int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, in ext4_group_extend() argument
1759 if (test_opt(sb, DEBUG)) in ext4_group_extend()
1760 ext4_msg(sb, KERN_DEBUG, in ext4_group_extend()
1767 if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { in ext4_group_extend()
1768 ext4_msg(sb, KERN_ERR, in ext4_group_extend()
1772 ext4_warning(sb, "CONFIG_LBDAF not enabled"); in ext4_group_extend()
1777 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_group_extend()
1782 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_group_extend()
1785 ext4_warning(sb, "need to use ext2online to resize further"); in ext4_group_extend()
1789 add = EXT4_BLOCKS_PER_GROUP(sb) - last; in ext4_group_extend()
1792 ext4_warning(sb, "blocks_count overflow"); in ext4_group_extend()
1800 ext4_warning(sb, "will only finish group (%llu blocks, %u new)", in ext4_group_extend()
1804 bh = sb_bread(sb, o_blocks_count + add - 1); in ext4_group_extend()
1806 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_group_extend()
1811 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_group_extend()
1816 static int num_desc_blocks(struct super_block *sb, ext4_group_t groups) in num_desc_blocks() argument
1818 return (groups + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); in num_desc_blocks()
1826 static int ext4_convert_meta_bg(struct super_block *sb, struct inode *inode) in ext4_convert_meta_bg() argument
1829 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_convert_meta_bg()
1836 ext4_msg(sb, KERN_INFO, "Converting file system to meta_bg"); in ext4_convert_meta_bg()
1839 ext4_error(sb, "Unexpected non-zero " in ext4_convert_meta_bg()
1860 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credits); in ext4_convert_meta_bg()
1869 ext4_clear_feature_resize_inode(sb); in ext4_convert_meta_bg()
1870 ext4_set_feature_meta_bg(sb); in ext4_convert_meta_bg()
1872 cpu_to_le32(num_desc_blocks(sb, sbi->s_groups_count)); in ext4_convert_meta_bg()
1874 err = ext4_handle_dirty_super(handle, sb); in ext4_convert_meta_bg()
1876 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1890 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1900 ext4_error(sb, "corrupted/inconsistent resize inode"); in ext4_convert_meta_bg()
1910 int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) in ext4_resize_fs() argument
1913 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_fs()
1929 bh = sb_bread(sb, n_blocks_count - 1); in ext4_resize_fs()
1931 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_resize_fs()
1939 ext4_msg(sb, KERN_INFO, "resizing filesystem from %llu " in ext4_resize_fs()
1944 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_resize_fs()
1952 n_group = ext4_get_group_number(sb, n_blocks_count - 1); in ext4_resize_fs()
1953 if (n_group >= (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { in ext4_resize_fs()
1954 ext4_warning(sb, "resize would cause inodes_count overflow"); in ext4_resize_fs()
1957 ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); in ext4_resize_fs()
1959 n_desc_blocks = num_desc_blocks(sb, n_group + 1); in ext4_resize_fs()
1960 o_desc_blocks = num_desc_blocks(sb, sbi->s_groups_count); in ext4_resize_fs()
1962 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_resize_fs()
1964 if (ext4_has_feature_resize_inode(sb)) { in ext4_resize_fs()
1966 ext4_error(sb, "resize_inode and meta_bg enabled " in ext4_resize_fs()
1975 n_group = n_desc_blocks * EXT4_DESC_PER_BLOCK(sb); in ext4_resize_fs()
1977 EXT4_BLOCKS_PER_GROUP(sb) + in ext4_resize_fs()
1983 resize_inode = ext4_iget(sb, EXT4_RESIZE_INO); in ext4_resize_fs()
1985 ext4_warning(sb, "Error opening resize inode"); in ext4_resize_fs()
1991 err = ext4_convert_meta_bg(sb, resize_inode); in ext4_resize_fs()
2012 if ((ext4_group_first_block_no(sb, n_group) + in ext4_resize_fs()
2013 ext4_group_overhead_blocks(sb, n_group) + 2 + in ext4_resize_fs()
2015 n_blocks_count = ext4_group_first_block_no(sb, n_group); in ext4_resize_fs()
2029 add = EXT4_BLOCKS_PER_GROUP(sb) - (offset + 1); in ext4_resize_fs()
2031 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_resize_fs()
2039 err = ext4_alloc_flex_bg_array(sb, n_group + 1); in ext4_resize_fs()
2043 err = ext4_mb_alloc_groupinfo(sb, n_group + 1); in ext4_resize_fs()
2056 while (ext4_setup_next_flex_gd(sb, flex_gd, n_blocks_count, in ext4_resize_fs()
2060 ext4_msg(sb, KERN_INFO, in ext4_resize_fs()
2065 if (ext4_alloc_group_tables(sb, flex_gd, flexbg_size) != 0) in ext4_resize_fs()
2067 err = ext4_flex_group_add(sb, resize_inode, flex_gd); in ext4_resize_fs()
2090 ext4_warning(sb, "error (%d) occurred during " in ext4_resize_fs()
2092 ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", in ext4_resize_fs()