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()
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()
77 if (ext4_has_feature_sparse_super2(sb)) { in ext4_resize_begin()
78 ext4_msg(sb, KERN_ERR, "Online resizing not supported with sparse_super2"); in ext4_resize_begin()
83 &EXT4_SB(sb)->s_ext4_flags)) in ext4_resize_begin()
89 void ext4_resize_end(struct super_block *sb) in ext4_resize_end() argument
91 clear_bit_unlock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags); in ext4_resize_end()
95 static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, in ext4_meta_bg_first_group() argument
97 return (group >> EXT4_DESC_PER_BLOCK_BITS(sb)) << in ext4_meta_bg_first_group()
98 EXT4_DESC_PER_BLOCK_BITS(sb); in ext4_meta_bg_first_group()
101 static ext4_fsblk_t ext4_meta_bg_first_block_no(struct super_block *sb, in ext4_meta_bg_first_block_no() argument
103 group = ext4_meta_bg_first_group(sb, group); in ext4_meta_bg_first_block_no()
104 return ext4_group_first_block_no(sb, group); in ext4_meta_bg_first_block_no()
107 static ext4_grpblk_t ext4_group_overhead_blocks(struct super_block *sb, in ext4_group_overhead_blocks() argument
110 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
111 if (ext4_bg_has_super(sb, group)) in ext4_group_overhead_blocks()
113 le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in ext4_group_overhead_blocks()
120 static int verify_group_input(struct super_block *sb, in verify_group_input() argument
123 struct ext4_sb_info *sbi = EXT4_SB(sb); in verify_group_input()
136 ext4_warning(sb, "Cannot add at group %u (only %u groups)", in verify_group_input()
141 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
146 if (test_opt(sb, DEBUG)) in verify_group_input()
149 ext4_bg_has_super(sb, input->group) ? "normal" : in verify_group_input()
153 ext4_get_group_no_and_offset(sb, start, NULL, &offset); in verify_group_input()
155 ext4_warning(sb, "Last group not full"); in verify_group_input()
157 ext4_warning(sb, "Reserved blocks too high (%u)", in verify_group_input()
160 ext4_warning(sb, "Bad blocks count %u", in verify_group_input()
162 else if (IS_ERR(bh = ext4_sb_bread(sb, end - 1, 0))) { in verify_group_input()
165 ext4_warning(sb, "Cannot read last block (%llu)", in verify_group_input()
168 ext4_warning(sb, "Block bitmap not in group (block %llu)", in verify_group_input()
171 ext4_warning(sb, "Inode bitmap not in group (block %llu)", in verify_group_input()
175 ext4_warning(sb, "Inode table not in group (blocks %llu-%llu)", in verify_group_input()
178 ext4_warning(sb, "Block bitmap same as inode bitmap (%llu)", in verify_group_input()
181 ext4_warning(sb, "Block bitmap (%llu) in inode table " in verify_group_input()
186 ext4_warning(sb, "Inode bitmap (%llu) in inode table " in verify_group_input()
191 ext4_warning(sb, "Block bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
195 ext4_warning(sb, "Inode bitmap (%llu) in GDT table (%llu-%llu)", in verify_group_input()
200 ext4_warning(sb, "Inode table (%llu-%llu) overlaps GDT table " in verify_group_input()
278 * @sb: super block of fs to which the groups belongs
283 static int ext4_alloc_group_tables(struct super_block *sb, in ext4_alloc_group_tables() argument
311 start_blk = ext4_group_first_block_no(sb, src_group); in ext4_alloc_group_tables()
314 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
321 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
333 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
344 group = ext4_get_group_number(sb, start_blk - 1); in ext4_alloc_group_tables()
352 unsigned int itb = EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
358 group = ext4_get_group_number(sb, start_blk); in ext4_alloc_group_tables()
359 next_group_start = ext4_group_first_block_no(sb, group + 1); in ext4_alloc_group_tables()
371 start_blk += EXT4_SB(sb)->s_itb_per_group; in ext4_alloc_group_tables()
377 EXT4_NUM_B2C(EXT4_SB(sb), in ext4_alloc_group_tables()
381 if (test_opt(sb, DEBUG)) { in ext4_alloc_group_tables()
392 ext4_bg_has_super(sb, group + i) ? "normal" : in ext4_alloc_group_tables()
402 static struct buffer_head *bclean(handle_t *handle, struct super_block *sb, in bclean() argument
408 bh = sb_getblk(sb, blk); in bclean()
412 err = ext4_journal_get_write_access(handle, sb, bh, EXT4_JTR_NONE); in bclean()
417 memset(bh->b_data, 0, sb->s_blocksize); in bclean()
435 * @sb: super block
439 static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle, in set_flexbg_block_bitmap() argument
443 struct ext4_sb_info *sbi = EXT4_SB(sb); in set_flexbg_block_bitmap()
456 group = ext4_get_group_number(sb, EXT4_C2B(sbi, first_cluster)); in set_flexbg_block_bitmap()
457 start = EXT4_B2C(sbi, ext4_group_first_block_no(sb, group)); in set_flexbg_block_bitmap()
460 count2 = EXT4_CLUSTERS_PER_GROUP(sb) - (first_cluster - start); in set_flexbg_block_bitmap()
473 bh = sb_getblk(sb, flex_gd->groups[group].block_bitmap); in set_flexbg_block_bitmap()
478 err = ext4_journal_get_write_access(handle, sb, bh, in set_flexbg_block_bitmap()
511 static int setup_new_flex_group_blocks(struct super_block *sb, in setup_new_flex_group_blocks() argument
514 int group_table_count[] = {1, 1, EXT4_SB(sb)->s_itb_per_group}; in setup_new_flex_group_blocks()
517 struct ext4_sb_info *sbi = EXT4_SB(sb); in setup_new_flex_group_blocks()
531 meta_bg = ext4_has_feature_meta_bg(sb); in setup_new_flex_group_blocks()
534 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in setup_new_flex_group_blocks()
543 gdblocks = ext4_bg_num_gdb(sb, group); in setup_new_flex_group_blocks()
544 start = ext4_group_first_block_no(sb, group); in setup_new_flex_group_blocks()
546 if (meta_bg == 0 && !ext4_bg_has_super(sb, group)) in setup_new_flex_group_blocks()
551 first_group = ext4_meta_bg_first_group(sb, group); in setup_new_flex_group_blocks()
553 first_group != group + EXT4_DESC_PER_BLOCK(sb) - 1) in setup_new_flex_group_blocks()
557 block = start + ext4_bg_has_super(sb, group); in setup_new_flex_group_blocks()
567 gdb = sb_getblk(sb, block); in setup_new_flex_group_blocks()
574 err = ext4_journal_get_write_access(handle, sb, gdb, in setup_new_flex_group_blocks()
595 if (ext4_bg_has_super(sb, group)) { in setup_new_flex_group_blocks()
596 err = sb_issue_zeroout(sb, gdblocks + start + 1, in setup_new_flex_group_blocks()
611 err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, in setup_new_flex_group_blocks()
626 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
631 overhead = ext4_group_overhead_blocks(sb, group); in setup_new_flex_group_blocks()
639 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
655 bh = bclean(handle, sb, block); in setup_new_flex_group_blocks()
661 ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), in setup_new_flex_group_blocks()
662 sb->s_blocksize * 8, bh->b_data); in setup_new_flex_group_blocks()
680 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
694 err = set_flexbg_block_bitmap(sb, handle, in setup_new_flex_group_blocks()
720 static unsigned ext4_list_backups(struct super_block *sb, unsigned *three, in ext4_list_backups() argument
727 if (!ext4_has_feature_sparse_super(sb)) { in ext4_list_backups()
753 static int verify_reserved_gdb(struct super_block *sb, in verify_reserved_gdb() argument
765 while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) { in verify_reserved_gdb()
767 grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){ in verify_reserved_gdb()
768 ext4_warning(sb, "reserved GDT %llu" in verify_reserved_gdb()
772 (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) + in verify_reserved_gdb()
776 if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb)) in verify_reserved_gdb()
799 struct super_block *sb = inode->i_sb; in add_new_gdb() local
800 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in add_new_gdb()
801 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb()
802 ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num; in add_new_gdb()
811 if (test_opt(sb, DEBUG)) in add_new_gdb()
816 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb()
820 gdbackups = verify_reserved_gdb(sb, group, gdb_bh); in add_new_gdb()
827 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in add_new_gdb()
835 if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) { in add_new_gdb()
836 ext4_warning(sb, "new group %u GDT block %llu not reserved", in add_new_gdb()
842 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in add_new_gdb()
843 err = ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh, in add_new_gdb()
849 err = ext4_journal_get_write_access(handle, sb, gdb_bh, EXT4_JTR_NONE); in add_new_gdb()
854 err = ext4_journal_get_write_access(handle, sb, dind, EXT4_JTR_NONE); in add_new_gdb()
856 ext4_std_error(sb, err); in add_new_gdb()
869 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb()
883 data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0; in add_new_gdb()
886 ext4_std_error(sb, err); in add_new_gdb()
889 inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> in add_new_gdb()
890 (9 - EXT4_SB(sb)->s_cluster_bits); in add_new_gdb()
892 memset(gdb_bh->b_data, 0, sb->s_blocksize); in add_new_gdb()
895 ext4_std_error(sb, err); in add_new_gdb()
902 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb()
904 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb()
907 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb()
908 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb()
911 lock_buffer(EXT4_SB(sb)->s_sbh); in add_new_gdb()
913 ext4_superblock_csum_set(sb); in add_new_gdb()
914 unlock_buffer(EXT4_SB(sb)->s_sbh); in add_new_gdb()
915 err = ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh); in add_new_gdb()
917 ext4_std_error(sb, err); in add_new_gdb()
932 static int add_new_gdb_meta_bg(struct super_block *sb, in add_new_gdb_meta_bg() argument
937 unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in add_new_gdb_meta_bg()
940 gdblock = ext4_meta_bg_first_block_no(sb, group) + in add_new_gdb_meta_bg()
941 ext4_bg_has_super(sb, group); in add_new_gdb_meta_bg()
942 gdb_bh = ext4_sb_bread(sb, gdblock, 0); in add_new_gdb_meta_bg()
950 ext4_warning(sb, "not enough memory for %lu groups", in add_new_gdb_meta_bg()
956 o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc); in add_new_gdb_meta_bg()
958 EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); in add_new_gdb_meta_bg()
963 err = ext4_journal_get_write_access(handle, sb, gdb_bh, EXT4_JTR_NONE); in add_new_gdb_meta_bg()
970 rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc); in add_new_gdb_meta_bg()
971 EXT4_SB(sb)->s_gdb_count++; in add_new_gdb_meta_bg()
992 struct super_block *sb = inode->i_sb; in reserve_backup_gdb() local
993 int reserved_gdb =le16_to_cpu(EXT4_SB(sb)->s_es->s_reserved_gdt_blocks); in reserve_backup_gdb()
994 int cluster_bits = EXT4_SB(sb)->s_cluster_bits; in reserve_backup_gdb()
1009 dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0); in reserve_backup_gdb()
1016 blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count; in reserve_backup_gdb()
1017 data = (__le32 *)dind->b_data + (EXT4_SB(sb)->s_gdb_count % in reserve_backup_gdb()
1018 EXT4_ADDR_PER_BLOCK(sb)); in reserve_backup_gdb()
1019 end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb); in reserve_backup_gdb()
1024 ext4_warning(sb, "reserved block %llu" in reserve_backup_gdb()
1031 primary[res] = ext4_sb_bread(sb, blk, 0); in reserve_backup_gdb()
1037 gdbackups = verify_reserved_gdb(sb, group, primary[res]); in reserve_backup_gdb()
1049 if ((err = ext4_journal_get_write_access(handle, sb, primary[i], in reserve_backup_gdb()
1061 blk = group * EXT4_BLOCKS_PER_GROUP(sb); in reserve_backup_gdb()
1074 inode->i_blocks += reserved_gdb * sb->s_blocksize >> (9 - cluster_bits); in reserve_backup_gdb()
1104 static void update_backups(struct super_block *sb, sector_t blk_off, char *data, in update_backups() argument
1107 struct ext4_sb_info *sbi = EXT4_SB(sb); in update_backups()
1109 const int bpg = EXT4_BLOCKS_PER_GROUP(sb); in update_backups()
1114 int rest = sb->s_blocksize - size; in update_backups()
1118 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA); in update_backups()
1126 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1129 group = ext4_get_group_number(sb, blk_off) + 1; in update_backups()
1130 last = (ext4_group_t)(group + EXT4_DESC_PER_BLOCK(sb) - 2); in update_backups()
1145 backup_block = (ext4_group_first_block_no(sb, group) + in update_backups()
1146 ext4_bg_has_super(sb, group)); in update_backups()
1148 bh = sb_getblk(sb, backup_block); in update_backups()
1155 ext4_group_first_block_no(sb, group)); in update_backups()
1157 if ((err = ext4_journal_get_write_access(handle, sb, bh, in update_backups()
1168 ext4_std_error(sb, err); in update_backups()
1172 group = ext4_list_backups(sb, &three, &five, &seven); in update_backups()
1193 ext4_warning(sb, "can't update backup for group %u (err %d), " in update_backups()
1206 * @sb: super block
1211 static int ext4_add_new_descs(handle_t *handle, struct super_block *sb, in ext4_add_new_descs() argument
1215 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_add_new_descs()
1221 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_add_new_descs()
1223 int reserved_gdb = ext4_bg_has_super(sb, group) ? in ext4_add_new_descs()
1226 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1227 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_add_new_descs()
1239 err = ext4_journal_get_write_access(handle, sb, gdb_bh, in ext4_add_new_descs()
1242 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) in ext4_add_new_descs()
1245 err = add_new_gdb_meta_bg(sb, handle, group); in ext4_add_new_descs()
1255 static struct buffer_head *ext4_get_bitmap(struct super_block *sb, __u64 block) in ext4_get_bitmap() argument
1257 struct buffer_head *bh = sb_getblk(sb, block); in ext4_get_bitmap()
1270 static int ext4_set_bitmap_checksums(struct super_block *sb, in ext4_set_bitmap_checksums() argument
1277 if (!ext4_has_metadata_csum(sb)) in ext4_set_bitmap_checksums()
1280 bh = ext4_get_bitmap(sb, group_data->inode_bitmap); in ext4_set_bitmap_checksums()
1283 ext4_inode_bitmap_csum_set(sb, group, gdp, bh, in ext4_set_bitmap_checksums()
1284 EXT4_INODES_PER_GROUP(sb) / 8); in ext4_set_bitmap_checksums()
1287 bh = ext4_get_bitmap(sb, group_data->block_bitmap); in ext4_set_bitmap_checksums()
1290 ext4_block_bitmap_csum_set(sb, group, gdp, bh); in ext4_set_bitmap_checksums()
1299 static int ext4_setup_new_descs(handle_t *handle, struct super_block *sb, in ext4_setup_new_descs() argument
1304 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_new_descs()
1314 gdb_off = group % EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1315 gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_setup_new_descs()
1323 gdb_off * EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1325 memset(gdp, 0, EXT4_DESC_SIZE(sb)); in ext4_setup_new_descs()
1326 ext4_block_bitmap_set(sb, gdp, group_data->block_bitmap); in ext4_setup_new_descs()
1327 ext4_inode_bitmap_set(sb, gdp, group_data->inode_bitmap); in ext4_setup_new_descs()
1328 err = ext4_set_bitmap_checksums(sb, group, gdp, group_data); in ext4_setup_new_descs()
1330 ext4_std_error(sb, err); in ext4_setup_new_descs()
1334 ext4_inode_table_set(sb, gdp, group_data->inode_table); in ext4_setup_new_descs()
1335 ext4_free_group_clusters_set(sb, gdp, in ext4_setup_new_descs()
1337 ext4_free_inodes_set(sb, gdp, EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1338 if (ext4_has_group_desc_csum(sb)) in ext4_setup_new_descs()
1339 ext4_itable_unused_set(sb, gdp, in ext4_setup_new_descs()
1340 EXT4_INODES_PER_GROUP(sb)); in ext4_setup_new_descs()
1342 ext4_group_desc_csum_set(sb, group, gdp); in ext4_setup_new_descs()
1346 ext4_std_error(sb, err); in ext4_setup_new_descs()
1354 err = ext4_mb_add_groupinfo(sb, group, gdp); in ext4_setup_new_descs()
1365 * @sb: super block
1368 static void ext4_update_super(struct super_block *sb, in ext4_update_super() argument
1375 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_update_super()
1403 le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1405 le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) * in ext4_update_super()
1432 (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); in ext4_update_super()
1438 ext4_superblock_csum_set(sb); in ext4_update_super()
1445 EXT4_INODES_PER_GROUP(sb) * flex_gd->count); in ext4_update_super()
1449 if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) { in ext4_update_super()
1457 atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count, in ext4_update_super()
1464 ext4_calculate_overhead(sb); in ext4_update_super()
1466 if (test_opt(sb, DEBUG)) in ext4_update_super()
1476 static int ext4_flex_group_add(struct super_block *sb, in ext4_flex_group_add() argument
1480 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_flex_group_add()
1493 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_flex_group_add()
1496 err = setup_new_flex_group_blocks(sb, flex_gd); in ext4_flex_group_add()
1506 credit = 3; /* sb, resize inode, resize inode dindirect */ in ext4_flex_group_add()
1508 credit += 1 + DIV_ROUND_UP(flex_gd->count, EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1510 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credit); in ext4_flex_group_add()
1517 err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh, in ext4_flex_group_add()
1524 err = ext4_add_new_descs(handle, sb, group, in ext4_flex_group_add()
1529 err = ext4_setup_new_descs(handle, sb, flex_gd); in ext4_flex_group_add()
1533 ext4_update_super(sb, flex_gd); in ext4_flex_group_add()
1543 int gdb_num = group / EXT4_DESC_PER_BLOCK(sb); in ext4_flex_group_add()
1545 EXT4_DESC_PER_BLOCK(sb)); in ext4_flex_group_add()
1546 int meta_bg = ext4_has_feature_meta_bg(sb); in ext4_flex_group_add()
1549 update_backups(sb, sbi->s_sbh->b_blocknr, (char *)es, in ext4_flex_group_add()
1558 update_backups(sb, gdb_bh->b_blocknr, gdb_bh->b_data, in ext4_flex_group_add()
1567 static int ext4_setup_next_flex_gd(struct super_block *sb, in ext4_setup_next_flex_gd() argument
1572 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_setup_next_flex_gd()
1583 clusters_per_group = EXT4_CLUSTERS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1590 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_setup_next_flex_gd()
1592 ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &last); in ext4_setup_next_flex_gd()
1604 group_data[i].blocks_count = EXT4_BLOCKS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1605 overhead = ext4_group_overhead_blocks(sb, group + i); in ext4_setup_next_flex_gd()
1607 group_data[i].free_clusters_count = EXT4_CLUSTERS_PER_GROUP(sb); in ext4_setup_next_flex_gd()
1608 if (ext4_has_group_desc_csum(sb)) { in ext4_setup_next_flex_gd()
1611 if (!test_opt(sb, INIT_INODE_TABLE)) in ext4_setup_next_flex_gd()
1617 if (last_group == n_group && ext4_has_group_desc_csum(sb)) in ext4_setup_next_flex_gd()
1643 int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) in ext4_group_add() argument
1646 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_group_add()
1648 int reserved_gdb = ext4_bg_has_super(sb, input->group) ? in ext4_group_add()
1655 gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb); in ext4_group_add()
1657 if (gdb_off == 0 && !ext4_has_feature_sparse_super(sb)) { in ext4_group_add()
1658 ext4_warning(sb, "Can't resize non-sparse filesystem further"); in ext4_group_add()
1664 ext4_warning(sb, "blocks_count overflow"); in ext4_group_add()
1668 if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) < in ext4_group_add()
1670 ext4_warning(sb, "inodes_count overflow"); in ext4_group_add()
1675 if (!ext4_has_feature_resize_inode(sb) || in ext4_group_add()
1677 ext4_warning(sb, in ext4_group_add()
1681 inode = ext4_iget(sb, EXT4_RESIZE_INO, EXT4_IGET_SPECIAL); in ext4_group_add()
1683 ext4_warning(sb, "Error opening resize inode"); in ext4_group_add()
1689 err = verify_group_input(sb, input); in ext4_group_add()
1693 err = ext4_alloc_flex_bg_array(sb, input->group + 1); in ext4_group_add()
1697 err = ext4_mb_alloc_groupinfo(sb, input->group + 1); in ext4_group_add()
1704 err = ext4_flex_group_add(sb, inode, &flex_gd); in ext4_group_add()
1713 static int ext4_group_extend_no_check(struct super_block *sb, in ext4_group_extend_no_check() argument
1716 struct ext4_super_block *es = EXT4_SB(sb)->s_es; in ext4_group_extend_no_check()
1723 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, 3); in ext4_group_extend_no_check()
1726 ext4_warning(sb, "error %d on journal start", err); in ext4_group_extend_no_check()
1730 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access"); in ext4_group_extend_no_check()
1731 err = ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh, in ext4_group_extend_no_check()
1734 ext4_warning(sb, "error %d on journal write access", err); in ext4_group_extend_no_check()
1738 lock_buffer(EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1741 ext4_superblock_csum_set(sb); in ext4_group_extend_no_check()
1742 unlock_buffer(EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1746 err = ext4_group_add_blocks(handle, sb, o_blocks_count, add); in ext4_group_extend_no_check()
1749 ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh); in ext4_group_extend_no_check()
1758 if (test_opt(sb, DEBUG)) in ext4_group_extend_no_check()
1761 update_backups(sb, EXT4_SB(sb)->s_sbh->b_blocknr, in ext4_group_extend_no_check()
1777 int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, in ext4_group_extend() argument
1789 if (test_opt(sb, DEBUG)) in ext4_group_extend()
1790 ext4_msg(sb, KERN_DEBUG, in ext4_group_extend()
1797 if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { in ext4_group_extend()
1798 ext4_msg(sb, KERN_ERR, in ext4_group_extend()
1805 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_group_extend()
1810 ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last); in ext4_group_extend()
1813 ext4_warning(sb, "need to use ext2online to resize further"); in ext4_group_extend()
1817 add = EXT4_BLOCKS_PER_GROUP(sb) - last; in ext4_group_extend()
1820 ext4_warning(sb, "blocks_count overflow"); in ext4_group_extend()
1828 ext4_warning(sb, "will only finish group (%llu blocks, %u new)", in ext4_group_extend()
1832 bh = ext4_sb_bread(sb, o_blocks_count + add - 1, 0); in ext4_group_extend()
1834 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_group_extend()
1839 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_group_extend()
1844 static int num_desc_blocks(struct super_block *sb, ext4_group_t groups) in num_desc_blocks() argument
1846 return (groups + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); in num_desc_blocks()
1854 static int ext4_convert_meta_bg(struct super_block *sb, struct inode *inode) in ext4_convert_meta_bg() argument
1857 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_convert_meta_bg()
1864 ext4_msg(sb, KERN_INFO, "Converting file system to meta_bg"); in ext4_convert_meta_bg()
1867 ext4_error(sb, "Unexpected non-zero " in ext4_convert_meta_bg()
1889 handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credits); in ext4_convert_meta_bg()
1894 err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh, in ext4_convert_meta_bg()
1900 ext4_clear_feature_resize_inode(sb); in ext4_convert_meta_bg()
1901 ext4_set_feature_meta_bg(sb); in ext4_convert_meta_bg()
1903 cpu_to_le32(num_desc_blocks(sb, sbi->s_groups_count)); in ext4_convert_meta_bg()
1904 ext4_superblock_csum_set(sb); in ext4_convert_meta_bg()
1909 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1923 ext4_std_error(sb, err); in ext4_convert_meta_bg()
1933 ext4_error(sb, "corrupted/inconsistent resize inode"); in ext4_convert_meta_bg()
1940 * @sb: super block of the fs to be resized
1943 int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) in ext4_resize_fs() argument
1946 struct ext4_sb_info *sbi = EXT4_SB(sb); in ext4_resize_fs()
1962 bh = ext4_sb_bread(sb, n_blocks_count - 1, 0); in ext4_resize_fs()
1964 ext4_warning(sb, "can't read last block, resize aborted"); in ext4_resize_fs()
1972 ext4_msg(sb, KERN_INFO, "resizing filesystem from %llu " in ext4_resize_fs()
1977 ext4_warning(sb, "can't shrink FS - resize aborted"); in ext4_resize_fs()
1985 n_group = ext4_get_group_number(sb, n_blocks_count - 1); in ext4_resize_fs()
1986 if (n_group >= (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { in ext4_resize_fs()
1987 ext4_warning(sb, "resize would cause inodes_count overflow"); in ext4_resize_fs()
1990 ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); in ext4_resize_fs()
1992 n_desc_blocks = num_desc_blocks(sb, n_group + 1); in ext4_resize_fs()
1993 o_desc_blocks = num_desc_blocks(sb, sbi->s_groups_count); in ext4_resize_fs()
1995 meta_bg = ext4_has_feature_meta_bg(sb); in ext4_resize_fs()
1997 if (ext4_has_feature_resize_inode(sb)) { in ext4_resize_fs()
1999 ext4_error(sb, "resize_inode and meta_bg enabled " in ext4_resize_fs()
2008 n_group = n_desc_blocks * EXT4_DESC_PER_BLOCK(sb); in ext4_resize_fs()
2010 EXT4_BLOCKS_PER_GROUP(sb) + in ext4_resize_fs()
2016 resize_inode = ext4_iget(sb, EXT4_RESIZE_INO, in ext4_resize_fs()
2019 ext4_warning(sb, "Error opening resize inode"); in ext4_resize_fs()
2025 err = ext4_convert_meta_bg(sb, resize_inode); in ext4_resize_fs()
2046 if ((ext4_group_first_block_no(sb, n_group) + in ext4_resize_fs()
2047 ext4_group_overhead_blocks(sb, n_group) + 2 + in ext4_resize_fs()
2049 n_blocks_count = ext4_group_first_block_no(sb, n_group); in ext4_resize_fs()
2063 add = EXT4_C2B(sbi, EXT4_CLUSTERS_PER_GROUP(sb) - (offset + 1)); in ext4_resize_fs()
2065 err = ext4_group_extend_no_check(sb, o_blocks_count, add); in ext4_resize_fs()
2073 err = ext4_alloc_flex_bg_array(sb, n_group + 1); in ext4_resize_fs()
2077 err = ext4_mb_alloc_groupinfo(sb, n_group + 1); in ext4_resize_fs()
2090 while (ext4_setup_next_flex_gd(sb, flex_gd, n_blocks_count, in ext4_resize_fs()
2094 ext4_msg(sb, KERN_INFO, in ext4_resize_fs()
2099 if (ext4_alloc_group_tables(sb, flex_gd, flexbg_size) != 0) in ext4_resize_fs()
2101 err = ext4_flex_group_add(sb, resize_inode, flex_gd); in ext4_resize_fs()
2124 ext4_warning(sb, "error (%d) occurred during " in ext4_resize_fs()
2126 ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", in ext4_resize_fs()