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-rw-r--r--fs/ext4/super.c1075
1 files changed, 464 insertions, 611 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 933900909ed0..ceebaf853beb 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -62,6 +62,7 @@ static struct ext4_features *ext4_feat;
62 62
63static int ext4_load_journal(struct super_block *, struct ext4_super_block *, 63static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
64 unsigned long journal_devnum); 64 unsigned long journal_devnum);
65static int ext4_show_options(struct seq_file *seq, struct dentry *root);
65static int ext4_commit_super(struct super_block *sb, int sync); 66static int ext4_commit_super(struct super_block *sb, int sync);
66static void ext4_mark_recovery_complete(struct super_block *sb, 67static void ext4_mark_recovery_complete(struct super_block *sb,
67 struct ext4_super_block *es); 68 struct ext4_super_block *es);
@@ -375,7 +376,7 @@ void ext4_journal_abort_handle(const char *caller, unsigned int line,
375 if (is_handle_aborted(handle)) 376 if (is_handle_aborted(handle))
376 return; 377 return;
377 378
378 printk(KERN_ERR "%s:%d: aborting transaction: %s in %s\n", 379 printk(KERN_ERR "EXT4-fs: %s:%d: aborting transaction: %s in %s\n",
379 caller, line, errstr, err_fn); 380 caller, line, errstr, err_fn);
380 381
381 jbd2_journal_abort_handle(handle); 382 jbd2_journal_abort_handle(handle);
@@ -431,6 +432,22 @@ static int block_device_ejected(struct super_block *sb)
431 return bdi->dev == NULL; 432 return bdi->dev == NULL;
432} 433}
433 434
435static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
436{
437 struct super_block *sb = journal->j_private;
438 struct ext4_sb_info *sbi = EXT4_SB(sb);
439 int error = is_journal_aborted(journal);
440 struct ext4_journal_cb_entry *jce, *tmp;
441
442 spin_lock(&sbi->s_md_lock);
443 list_for_each_entry_safe(jce, tmp, &txn->t_private_list, jce_list) {
444 list_del_init(&jce->jce_list);
445 spin_unlock(&sbi->s_md_lock);
446 jce->jce_func(sb, jce, error);
447 spin_lock(&sbi->s_md_lock);
448 }
449 spin_unlock(&sbi->s_md_lock);
450}
434 451
435/* Deal with the reporting of failure conditions on a filesystem such as 452/* Deal with the reporting of failure conditions on a filesystem such as
436 * inconsistencies detected or read IO failures. 453 * inconsistencies detected or read IO failures.
@@ -498,11 +515,16 @@ void ext4_error_inode(struct inode *inode, const char *function,
498 va_start(args, fmt); 515 va_start(args, fmt);
499 vaf.fmt = fmt; 516 vaf.fmt = fmt;
500 vaf.va = &args; 517 vaf.va = &args;
501 printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: inode #%lu: ",
502 inode->i_sb->s_id, function, line, inode->i_ino);
503 if (block) 518 if (block)
504 printk(KERN_CONT "block %llu: ", block); 519 printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: "
505 printk(KERN_CONT "comm %s: %pV\n", current->comm, &vaf); 520 "inode #%lu: block %llu: comm %s: %pV\n",
521 inode->i_sb->s_id, function, line, inode->i_ino,
522 block, current->comm, &vaf);
523 else
524 printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: "
525 "inode #%lu: comm %s: %pV\n",
526 inode->i_sb->s_id, function, line, inode->i_ino,
527 current->comm, &vaf);
506 va_end(args); 528 va_end(args);
507 529
508 ext4_handle_error(inode->i_sb); 530 ext4_handle_error(inode->i_sb);
@@ -524,15 +546,21 @@ void ext4_error_file(struct file *file, const char *function,
524 path = d_path(&(file->f_path), pathname, sizeof(pathname)); 546 path = d_path(&(file->f_path), pathname, sizeof(pathname));
525 if (IS_ERR(path)) 547 if (IS_ERR(path))
526 path = "(unknown)"; 548 path = "(unknown)";
527 printk(KERN_CRIT
528 "EXT4-fs error (device %s): %s:%d: inode #%lu: ",
529 inode->i_sb->s_id, function, line, inode->i_ino);
530 if (block)
531 printk(KERN_CONT "block %llu: ", block);
532 va_start(args, fmt); 549 va_start(args, fmt);
533 vaf.fmt = fmt; 550 vaf.fmt = fmt;
534 vaf.va = &args; 551 vaf.va = &args;
535 printk(KERN_CONT "comm %s: path %s: %pV\n", current->comm, path, &vaf); 552 if (block)
553 printk(KERN_CRIT
554 "EXT4-fs error (device %s): %s:%d: inode #%lu: "
555 "block %llu: comm %s: path %s: %pV\n",
556 inode->i_sb->s_id, function, line, inode->i_ino,
557 block, current->comm, path, &vaf);
558 else
559 printk(KERN_CRIT
560 "EXT4-fs error (device %s): %s:%d: inode #%lu: "
561 "comm %s: path %s: %pV\n",
562 inode->i_sb->s_id, function, line, inode->i_ino,
563 current->comm, path, &vaf);
536 va_end(args); 564 va_end(args);
537 565
538 ext4_handle_error(inode->i_sb); 566 ext4_handle_error(inode->i_sb);
@@ -808,9 +836,6 @@ static void ext4_put_super(struct super_block *sb)
808 destroy_workqueue(sbi->dio_unwritten_wq); 836 destroy_workqueue(sbi->dio_unwritten_wq);
809 837
810 lock_super(sb); 838 lock_super(sb);
811 if (sb->s_dirt)
812 ext4_commit_super(sb, 1);
813
814 if (sbi->s_journal) { 839 if (sbi->s_journal) {
815 err = jbd2_journal_destroy(sbi->s_journal); 840 err = jbd2_journal_destroy(sbi->s_journal);
816 sbi->s_journal = NULL; 841 sbi->s_journal = NULL;
@@ -827,9 +852,12 @@ static void ext4_put_super(struct super_block *sb)
827 if (!(sb->s_flags & MS_RDONLY)) { 852 if (!(sb->s_flags & MS_RDONLY)) {
828 EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); 853 EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
829 es->s_state = cpu_to_le16(sbi->s_mount_state); 854 es->s_state = cpu_to_le16(sbi->s_mount_state);
830 ext4_commit_super(sb, 1);
831 } 855 }
856 if (sb->s_dirt || !(sb->s_flags & MS_RDONLY))
857 ext4_commit_super(sb, 1);
858
832 if (sbi->s_proc) { 859 if (sbi->s_proc) {
860 remove_proc_entry("options", sbi->s_proc);
833 remove_proc_entry(sb->s_id, ext4_proc_root); 861 remove_proc_entry(sb->s_id, ext4_proc_root);
834 } 862 }
835 kobject_del(&sbi->s_kobj); 863 kobject_del(&sbi->s_kobj);
@@ -990,180 +1018,6 @@ void ext4_clear_inode(struct inode *inode)
990 } 1018 }
991} 1019}
992 1020
993static inline void ext4_show_quota_options(struct seq_file *seq,
994 struct super_block *sb)
995{
996#if defined(CONFIG_QUOTA)
997 struct ext4_sb_info *sbi = EXT4_SB(sb);
998
999 if (sbi->s_jquota_fmt) {
1000 char *fmtname = "";
1001
1002 switch (sbi->s_jquota_fmt) {
1003 case QFMT_VFS_OLD:
1004 fmtname = "vfsold";
1005 break;
1006 case QFMT_VFS_V0:
1007 fmtname = "vfsv0";
1008 break;
1009 case QFMT_VFS_V1:
1010 fmtname = "vfsv1";
1011 break;
1012 }
1013 seq_printf(seq, ",jqfmt=%s", fmtname);
1014 }
1015
1016 if (sbi->s_qf_names[USRQUOTA])
1017 seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
1018
1019 if (sbi->s_qf_names[GRPQUOTA])
1020 seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
1021
1022 if (test_opt(sb, USRQUOTA))
1023 seq_puts(seq, ",usrquota");
1024
1025 if (test_opt(sb, GRPQUOTA))
1026 seq_puts(seq, ",grpquota");
1027#endif
1028}
1029
1030/*
1031 * Show an option if
1032 * - it's set to a non-default value OR
1033 * - if the per-sb default is different from the global default
1034 */
1035static int ext4_show_options(struct seq_file *seq, struct dentry *root)
1036{
1037 int def_errors;
1038 unsigned long def_mount_opts;
1039 struct super_block *sb = root->d_sb;
1040 struct ext4_sb_info *sbi = EXT4_SB(sb);
1041 struct ext4_super_block *es = sbi->s_es;
1042
1043 def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
1044 def_errors = le16_to_cpu(es->s_errors);
1045
1046 if (sbi->s_sb_block != 1)
1047 seq_printf(seq, ",sb=%llu", sbi->s_sb_block);
1048 if (test_opt(sb, MINIX_DF))
1049 seq_puts(seq, ",minixdf");
1050 if (test_opt(sb, GRPID) && !(def_mount_opts & EXT4_DEFM_BSDGROUPS))
1051 seq_puts(seq, ",grpid");
1052 if (!test_opt(sb, GRPID) && (def_mount_opts & EXT4_DEFM_BSDGROUPS))
1053 seq_puts(seq, ",nogrpid");
1054 if (sbi->s_resuid != EXT4_DEF_RESUID ||
1055 le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID) {
1056 seq_printf(seq, ",resuid=%u", sbi->s_resuid);
1057 }
1058 if (sbi->s_resgid != EXT4_DEF_RESGID ||
1059 le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) {
1060 seq_printf(seq, ",resgid=%u", sbi->s_resgid);
1061 }
1062 if (test_opt(sb, ERRORS_RO)) {
1063 if (def_errors == EXT4_ERRORS_PANIC ||
1064 def_errors == EXT4_ERRORS_CONTINUE) {
1065 seq_puts(seq, ",errors=remount-ro");
1066 }
1067 }
1068 if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE)
1069 seq_puts(seq, ",errors=continue");
1070 if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC)
1071 seq_puts(seq, ",errors=panic");
1072 if (test_opt(sb, NO_UID32) && !(def_mount_opts & EXT4_DEFM_UID16))
1073 seq_puts(seq, ",nouid32");
1074 if (test_opt(sb, DEBUG) && !(def_mount_opts & EXT4_DEFM_DEBUG))
1075 seq_puts(seq, ",debug");
1076#ifdef CONFIG_EXT4_FS_XATTR
1077 if (test_opt(sb, XATTR_USER))
1078 seq_puts(seq, ",user_xattr");
1079 if (!test_opt(sb, XATTR_USER))
1080 seq_puts(seq, ",nouser_xattr");
1081#endif
1082#ifdef CONFIG_EXT4_FS_POSIX_ACL
1083 if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL))
1084 seq_puts(seq, ",acl");
1085 if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL))
1086 seq_puts(seq, ",noacl");
1087#endif
1088 if (sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) {
1089 seq_printf(seq, ",commit=%u",
1090 (unsigned) (sbi->s_commit_interval / HZ));
1091 }
1092 if (sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME) {
1093 seq_printf(seq, ",min_batch_time=%u",
1094 (unsigned) sbi->s_min_batch_time);
1095 }
1096 if (sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) {
1097 seq_printf(seq, ",max_batch_time=%u",
1098 (unsigned) sbi->s_max_batch_time);
1099 }
1100
1101 /*
1102 * We're changing the default of barrier mount option, so
1103 * let's always display its mount state so it's clear what its
1104 * status is.
1105 */
1106 seq_puts(seq, ",barrier=");
1107 seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
1108 if (test_opt(sb, JOURNAL_ASYNC_COMMIT))
1109 seq_puts(seq, ",journal_async_commit");
1110 else if (test_opt(sb, JOURNAL_CHECKSUM))
1111 seq_puts(seq, ",journal_checksum");
1112 if (test_opt(sb, I_VERSION))
1113 seq_puts(seq, ",i_version");
1114 if (!test_opt(sb, DELALLOC) &&
1115 !(def_mount_opts & EXT4_DEFM_NODELALLOC))
1116 seq_puts(seq, ",nodelalloc");
1117
1118 if (!test_opt(sb, MBLK_IO_SUBMIT))
1119 seq_puts(seq, ",nomblk_io_submit");
1120 if (sbi->s_stripe)
1121 seq_printf(seq, ",stripe=%lu", sbi->s_stripe);
1122 /*
1123 * journal mode get enabled in different ways
1124 * So just print the value even if we didn't specify it
1125 */
1126 if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
1127 seq_puts(seq, ",data=journal");
1128 else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
1129 seq_puts(seq, ",data=ordered");
1130 else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
1131 seq_puts(seq, ",data=writeback");
1132
1133 if (sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS)
1134 seq_printf(seq, ",inode_readahead_blks=%u",
1135 sbi->s_inode_readahead_blks);
1136
1137 if (test_opt(sb, DATA_ERR_ABORT))
1138 seq_puts(seq, ",data_err=abort");
1139
1140 if (test_opt(sb, NO_AUTO_DA_ALLOC))
1141 seq_puts(seq, ",noauto_da_alloc");
1142
1143 if (test_opt(sb, DISCARD) && !(def_mount_opts & EXT4_DEFM_DISCARD))
1144 seq_puts(seq, ",discard");
1145
1146 if (test_opt(sb, NOLOAD))
1147 seq_puts(seq, ",norecovery");
1148
1149 if (test_opt(sb, DIOREAD_NOLOCK))
1150 seq_puts(seq, ",dioread_nolock");
1151
1152 if (test_opt(sb, BLOCK_VALIDITY) &&
1153 !(def_mount_opts & EXT4_DEFM_BLOCK_VALIDITY))
1154 seq_puts(seq, ",block_validity");
1155
1156 if (!test_opt(sb, INIT_INODE_TABLE))
1157 seq_puts(seq, ",noinit_itable");
1158 else if (sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT)
1159 seq_printf(seq, ",init_itable=%u",
1160 (unsigned) sbi->s_li_wait_mult);
1161
1162 ext4_show_quota_options(seq, sb);
1163
1164 return 0;
1165}
1166
1167static struct inode *ext4_nfs_get_inode(struct super_block *sb, 1021static struct inode *ext4_nfs_get_inode(struct super_block *sb,
1168 u64 ino, u32 generation) 1022 u64 ino, u32 generation)
1169{ 1023{
@@ -1316,18 +1170,17 @@ static const struct export_operations ext4_export_ops = {
1316enum { 1170enum {
1317 Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid, 1171 Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid,
1318 Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro, 1172 Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
1319 Opt_nouid32, Opt_debug, Opt_oldalloc, Opt_orlov, 1173 Opt_nouid32, Opt_debug, Opt_removed,
1320 Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl, 1174 Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
1321 Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload, Opt_nobh, Opt_bh, 1175 Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload,
1322 Opt_commit, Opt_min_batch_time, Opt_max_batch_time, 1176 Opt_commit, Opt_min_batch_time, Opt_max_batch_time,
1323 Opt_journal_update, Opt_journal_dev, 1177 Opt_journal_dev, Opt_journal_checksum, Opt_journal_async_commit,
1324 Opt_journal_checksum, Opt_journal_async_commit,
1325 Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback, 1178 Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
1326 Opt_data_err_abort, Opt_data_err_ignore, 1179 Opt_data_err_abort, Opt_data_err_ignore,
1327 Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, 1180 Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
1328 Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota, 1181 Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
1329 Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, 1182 Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
1330 Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version, 1183 Opt_usrquota, Opt_grpquota, Opt_i_version,
1331 Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit, 1184 Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
1332 Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity, 1185 Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
1333 Opt_inode_readahead_blks, Opt_journal_ioprio, 1186 Opt_inode_readahead_blks, Opt_journal_ioprio,
@@ -1350,20 +1203,19 @@ static const match_table_t tokens = {
1350 {Opt_err_ro, "errors=remount-ro"}, 1203 {Opt_err_ro, "errors=remount-ro"},
1351 {Opt_nouid32, "nouid32"}, 1204 {Opt_nouid32, "nouid32"},
1352 {Opt_debug, "debug"}, 1205 {Opt_debug, "debug"},
1353 {Opt_oldalloc, "oldalloc"}, 1206 {Opt_removed, "oldalloc"},
1354 {Opt_orlov, "orlov"}, 1207 {Opt_removed, "orlov"},
1355 {Opt_user_xattr, "user_xattr"}, 1208 {Opt_user_xattr, "user_xattr"},
1356 {Opt_nouser_xattr, "nouser_xattr"}, 1209 {Opt_nouser_xattr, "nouser_xattr"},
1357 {Opt_acl, "acl"}, 1210 {Opt_acl, "acl"},
1358 {Opt_noacl, "noacl"}, 1211 {Opt_noacl, "noacl"},
1359 {Opt_noload, "noload"},
1360 {Opt_noload, "norecovery"}, 1212 {Opt_noload, "norecovery"},
1361 {Opt_nobh, "nobh"}, 1213 {Opt_noload, "noload"},
1362 {Opt_bh, "bh"}, 1214 {Opt_removed, "nobh"},
1215 {Opt_removed, "bh"},
1363 {Opt_commit, "commit=%u"}, 1216 {Opt_commit, "commit=%u"},
1364 {Opt_min_batch_time, "min_batch_time=%u"}, 1217 {Opt_min_batch_time, "min_batch_time=%u"},
1365 {Opt_max_batch_time, "max_batch_time=%u"}, 1218 {Opt_max_batch_time, "max_batch_time=%u"},
1366 {Opt_journal_update, "journal=update"},
1367 {Opt_journal_dev, "journal_dev=%u"}, 1219 {Opt_journal_dev, "journal_dev=%u"},
1368 {Opt_journal_checksum, "journal_checksum"}, 1220 {Opt_journal_checksum, "journal_checksum"},
1369 {Opt_journal_async_commit, "journal_async_commit"}, 1221 {Opt_journal_async_commit, "journal_async_commit"},
@@ -1389,7 +1241,6 @@ static const match_table_t tokens = {
1389 {Opt_nobarrier, "nobarrier"}, 1241 {Opt_nobarrier, "nobarrier"},
1390 {Opt_i_version, "i_version"}, 1242 {Opt_i_version, "i_version"},
1391 {Opt_stripe, "stripe=%u"}, 1243 {Opt_stripe, "stripe=%u"},
1392 {Opt_resize, "resize"},
1393 {Opt_delalloc, "delalloc"}, 1244 {Opt_delalloc, "delalloc"},
1394 {Opt_nodelalloc, "nodelalloc"}, 1245 {Opt_nodelalloc, "nodelalloc"},
1395 {Opt_mblk_io_submit, "mblk_io_submit"}, 1246 {Opt_mblk_io_submit, "mblk_io_submit"},
@@ -1408,6 +1259,11 @@ static const match_table_t tokens = {
1408 {Opt_init_itable, "init_itable=%u"}, 1259 {Opt_init_itable, "init_itable=%u"},
1409 {Opt_init_itable, "init_itable"}, 1260 {Opt_init_itable, "init_itable"},
1410 {Opt_noinit_itable, "noinit_itable"}, 1261 {Opt_noinit_itable, "noinit_itable"},
1262 {Opt_removed, "check=none"}, /* mount option from ext2/3 */
1263 {Opt_removed, "nocheck"}, /* mount option from ext2/3 */
1264 {Opt_removed, "reservation"}, /* mount option from ext2/3 */
1265 {Opt_removed, "noreservation"}, /* mount option from ext2/3 */
1266 {Opt_removed, "journal=%u"}, /* mount option from ext2/3 */
1411 {Opt_err, NULL}, 1267 {Opt_err, NULL},
1412}; 1268};
1413 1269
@@ -1496,420 +1352,273 @@ static int clear_qf_name(struct super_block *sb, int qtype)
1496} 1352}
1497#endif 1353#endif
1498 1354
1499static int parse_options(char *options, struct super_block *sb, 1355#define MOPT_SET 0x0001
1500 unsigned long *journal_devnum, 1356#define MOPT_CLEAR 0x0002
1501 unsigned int *journal_ioprio, 1357#define MOPT_NOSUPPORT 0x0004
1502 ext4_fsblk_t *n_blocks_count, int is_remount) 1358#define MOPT_EXPLICIT 0x0008
1503{ 1359#define MOPT_CLEAR_ERR 0x0010
1504 struct ext4_sb_info *sbi = EXT4_SB(sb); 1360#define MOPT_GTE0 0x0020
1505 char *p;
1506 substring_t args[MAX_OPT_ARGS];
1507 int data_opt = 0;
1508 int option;
1509#ifdef CONFIG_QUOTA 1361#ifdef CONFIG_QUOTA
1510 int qfmt; 1362#define MOPT_Q 0
1363#define MOPT_QFMT 0x0040
1364#else
1365#define MOPT_Q MOPT_NOSUPPORT
1366#define MOPT_QFMT MOPT_NOSUPPORT
1511#endif 1367#endif
1512 1368#define MOPT_DATAJ 0x0080
1513 if (!options) 1369
1514 return 1; 1370static const struct mount_opts {
1515 1371 int token;
1516 while ((p = strsep(&options, ",")) != NULL) { 1372 int mount_opt;
1517 int token; 1373 int flags;
1518 if (!*p) 1374} ext4_mount_opts[] = {
1519 continue; 1375 {Opt_minix_df, EXT4_MOUNT_MINIX_DF, MOPT_SET},
1520 1376 {Opt_bsd_df, EXT4_MOUNT_MINIX_DF, MOPT_CLEAR},
1521 /* 1377 {Opt_grpid, EXT4_MOUNT_GRPID, MOPT_SET},
1522 * Initialize args struct so we know whether arg was 1378 {Opt_nogrpid, EXT4_MOUNT_GRPID, MOPT_CLEAR},
1523 * found; some options take optional arguments. 1379 {Opt_mblk_io_submit, EXT4_MOUNT_MBLK_IO_SUBMIT, MOPT_SET},
1524 */ 1380 {Opt_nomblk_io_submit, EXT4_MOUNT_MBLK_IO_SUBMIT, MOPT_CLEAR},
1525 args[0].to = args[0].from = NULL; 1381 {Opt_block_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_SET},
1526 token = match_token(p, tokens, args); 1382 {Opt_noblock_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_CLEAR},
1527 switch (token) { 1383 {Opt_dioread_nolock, EXT4_MOUNT_DIOREAD_NOLOCK, MOPT_SET},
1528 case Opt_bsd_df: 1384 {Opt_dioread_lock, EXT4_MOUNT_DIOREAD_NOLOCK, MOPT_CLEAR},
1529 ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); 1385 {Opt_discard, EXT4_MOUNT_DISCARD, MOPT_SET},
1530 clear_opt(sb, MINIX_DF); 1386 {Opt_nodiscard, EXT4_MOUNT_DISCARD, MOPT_CLEAR},
1531 break; 1387 {Opt_delalloc, EXT4_MOUNT_DELALLOC, MOPT_SET | MOPT_EXPLICIT},
1532 case Opt_minix_df: 1388 {Opt_nodelalloc, EXT4_MOUNT_DELALLOC, MOPT_CLEAR | MOPT_EXPLICIT},
1533 ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); 1389 {Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM, MOPT_SET},
1534 set_opt(sb, MINIX_DF); 1390 {Opt_journal_async_commit, (EXT4_MOUNT_JOURNAL_ASYNC_COMMIT |
1535 1391 EXT4_MOUNT_JOURNAL_CHECKSUM), MOPT_SET},
1536 break; 1392 {Opt_noload, EXT4_MOUNT_NOLOAD, MOPT_SET},
1537 case Opt_grpid: 1393 {Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_SET | MOPT_CLEAR_ERR},
1538 ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); 1394 {Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_SET | MOPT_CLEAR_ERR},
1539 set_opt(sb, GRPID); 1395 {Opt_err_cont, EXT4_MOUNT_ERRORS_CONT, MOPT_SET | MOPT_CLEAR_ERR},
1540 1396 {Opt_data_err_abort, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_SET},
1541 break; 1397 {Opt_data_err_ignore, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_CLEAR},
1542 case Opt_nogrpid: 1398 {Opt_barrier, EXT4_MOUNT_BARRIER, MOPT_SET},
1543 ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); 1399 {Opt_nobarrier, EXT4_MOUNT_BARRIER, MOPT_CLEAR},
1544 clear_opt(sb, GRPID); 1400 {Opt_noauto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_SET},
1545 1401 {Opt_auto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_CLEAR},
1546 break; 1402 {Opt_noinit_itable, EXT4_MOUNT_INIT_INODE_TABLE, MOPT_CLEAR},
1547 case Opt_resuid: 1403 {Opt_commit, 0, MOPT_GTE0},
1548 if (match_int(&args[0], &option)) 1404 {Opt_max_batch_time, 0, MOPT_GTE0},
1549 return 0; 1405 {Opt_min_batch_time, 0, MOPT_GTE0},
1550 sbi->s_resuid = option; 1406 {Opt_inode_readahead_blks, 0, MOPT_GTE0},
1551 break; 1407 {Opt_init_itable, 0, MOPT_GTE0},
1552 case Opt_resgid: 1408 {Opt_stripe, 0, MOPT_GTE0},
1553 if (match_int(&args[0], &option)) 1409 {Opt_data_journal, EXT4_MOUNT_JOURNAL_DATA, MOPT_DATAJ},
1554 return 0; 1410 {Opt_data_ordered, EXT4_MOUNT_ORDERED_DATA, MOPT_DATAJ},
1555 sbi->s_resgid = option; 1411 {Opt_data_writeback, EXT4_MOUNT_WRITEBACK_DATA, MOPT_DATAJ},
1556 break;
1557 case Opt_sb:
1558 /* handled by get_sb_block() instead of here */
1559 /* *sb_block = match_int(&args[0]); */
1560 break;
1561 case Opt_err_panic:
1562 clear_opt(sb, ERRORS_CONT);
1563 clear_opt(sb, ERRORS_RO);
1564 set_opt(sb, ERRORS_PANIC);
1565 break;
1566 case Opt_err_ro:
1567 clear_opt(sb, ERRORS_CONT);
1568 clear_opt(sb, ERRORS_PANIC);
1569 set_opt(sb, ERRORS_RO);
1570 break;
1571 case Opt_err_cont:
1572 clear_opt(sb, ERRORS_RO);
1573 clear_opt(sb, ERRORS_PANIC);
1574 set_opt(sb, ERRORS_CONT);
1575 break;
1576 case Opt_nouid32:
1577 set_opt(sb, NO_UID32);
1578 break;
1579 case Opt_debug:
1580 set_opt(sb, DEBUG);
1581 break;
1582 case Opt_oldalloc:
1583 ext4_msg(sb, KERN_WARNING,
1584 "Ignoring deprecated oldalloc option");
1585 break;
1586 case Opt_orlov:
1587 ext4_msg(sb, KERN_WARNING,
1588 "Ignoring deprecated orlov option");
1589 break;
1590#ifdef CONFIG_EXT4_FS_XATTR 1412#ifdef CONFIG_EXT4_FS_XATTR
1591 case Opt_user_xattr: 1413 {Opt_user_xattr, EXT4_MOUNT_XATTR_USER, MOPT_SET},
1592 set_opt(sb, XATTR_USER); 1414 {Opt_nouser_xattr, EXT4_MOUNT_XATTR_USER, MOPT_CLEAR},
1593 break;
1594 case Opt_nouser_xattr:
1595 clear_opt(sb, XATTR_USER);
1596 break;
1597#else 1415#else
1598 case Opt_user_xattr: 1416 {Opt_user_xattr, 0, MOPT_NOSUPPORT},
1599 case Opt_nouser_xattr: 1417 {Opt_nouser_xattr, 0, MOPT_NOSUPPORT},
1600 ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported");
1601 break;
1602#endif 1418#endif
1603#ifdef CONFIG_EXT4_FS_POSIX_ACL 1419#ifdef CONFIG_EXT4_FS_POSIX_ACL
1604 case Opt_acl: 1420 {Opt_acl, EXT4_MOUNT_POSIX_ACL, MOPT_SET},
1605 set_opt(sb, POSIX_ACL); 1421 {Opt_noacl, EXT4_MOUNT_POSIX_ACL, MOPT_CLEAR},
1606 break;
1607 case Opt_noacl:
1608 clear_opt(sb, POSIX_ACL);
1609 break;
1610#else 1422#else
1611 case Opt_acl: 1423 {Opt_acl, 0, MOPT_NOSUPPORT},
1612 case Opt_noacl: 1424 {Opt_noacl, 0, MOPT_NOSUPPORT},
1613 ext4_msg(sb, KERN_ERR, "(no)acl options not supported");
1614 break;
1615#endif 1425#endif
1616 case Opt_journal_update: 1426 {Opt_nouid32, EXT4_MOUNT_NO_UID32, MOPT_SET},
1617 /* @@@ FIXME */ 1427 {Opt_debug, EXT4_MOUNT_DEBUG, MOPT_SET},
1618 /* Eventually we will want to be able to create 1428 {Opt_quota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q},
1619 a journal file here. For now, only allow the 1429 {Opt_usrquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA,
1620 user to specify an existing inode to be the 1430 MOPT_SET | MOPT_Q},
1621 journal file. */ 1431 {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA,
1622 if (is_remount) { 1432 MOPT_SET | MOPT_Q},
1623 ext4_msg(sb, KERN_ERR, 1433 {Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA |
1624 "Cannot specify journal on remount"); 1434 EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q},
1625 return 0; 1435 {Opt_usrjquota, 0, MOPT_Q},
1626 } 1436 {Opt_grpjquota, 0, MOPT_Q},
1627 set_opt(sb, UPDATE_JOURNAL); 1437 {Opt_offusrjquota, 0, MOPT_Q},
1628 break; 1438 {Opt_offgrpjquota, 0, MOPT_Q},
1629 case Opt_journal_dev: 1439 {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT},
1630 if (is_remount) { 1440 {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT},
1441 {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT},
1442 {Opt_err, 0, 0}
1443};
1444
1445static int handle_mount_opt(struct super_block *sb, char *opt, int token,
1446 substring_t *args, unsigned long *journal_devnum,
1447 unsigned int *journal_ioprio, int is_remount)
1448{
1449 struct ext4_sb_info *sbi = EXT4_SB(sb);
1450 const struct mount_opts *m;
1451 int arg = 0;
1452
1453 if (args->from && match_int(args, &arg))
1454 return -1;
1455 switch (token) {
1456 case Opt_noacl:
1457 case Opt_nouser_xattr:
1458 ext4_msg(sb, KERN_WARNING, deprecated_msg, opt, "3.5");
1459 break;
1460 case Opt_sb:
1461 return 1; /* handled by get_sb_block() */
1462 case Opt_removed:
1463 ext4_msg(sb, KERN_WARNING,
1464 "Ignoring removed %s option", opt);
1465 return 1;
1466 case Opt_resuid:
1467 sbi->s_resuid = arg;
1468 return 1;
1469 case Opt_resgid:
1470 sbi->s_resgid = arg;
1471 return 1;
1472 case Opt_abort:
1473 sbi->s_mount_flags |= EXT4_MF_FS_ABORTED;
1474 return 1;
1475 case Opt_i_version:
1476 sb->s_flags |= MS_I_VERSION;
1477 return 1;
1478 case Opt_journal_dev:
1479 if (is_remount) {
1480 ext4_msg(sb, KERN_ERR,
1481 "Cannot specify journal on remount");
1482 return -1;
1483 }
1484 *journal_devnum = arg;
1485 return 1;
1486 case Opt_journal_ioprio:
1487 if (arg < 0 || arg > 7)
1488 return -1;
1489 *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, arg);
1490 return 1;
1491 }
1492
1493 for (m = ext4_mount_opts; m->token != Opt_err; m++) {
1494 if (token != m->token)
1495 continue;
1496 if (args->from && (m->flags & MOPT_GTE0) && (arg < 0))
1497 return -1;
1498 if (m->flags & MOPT_EXPLICIT)
1499 set_opt2(sb, EXPLICIT_DELALLOC);
1500 if (m->flags & MOPT_CLEAR_ERR)
1501 clear_opt(sb, ERRORS_MASK);
1502 if (token == Opt_noquota && sb_any_quota_loaded(sb)) {
1503 ext4_msg(sb, KERN_ERR, "Cannot change quota "
1504 "options when quota turned on");
1505 return -1;
1506 }
1507
1508 if (m->flags & MOPT_NOSUPPORT) {
1509 ext4_msg(sb, KERN_ERR, "%s option not supported", opt);
1510 } else if (token == Opt_commit) {
1511 if (arg == 0)
1512 arg = JBD2_DEFAULT_MAX_COMMIT_AGE;
1513 sbi->s_commit_interval = HZ * arg;
1514 } else if (token == Opt_max_batch_time) {
1515 if (arg == 0)
1516 arg = EXT4_DEF_MAX_BATCH_TIME;
1517 sbi->s_max_batch_time = arg;
1518 } else if (token == Opt_min_batch_time) {
1519 sbi->s_min_batch_time = arg;
1520 } else if (token == Opt_inode_readahead_blks) {
1521 if (arg > (1 << 30))
1522 return -1;
1523 if (arg && !is_power_of_2(arg)) {
1631 ext4_msg(sb, KERN_ERR, 1524 ext4_msg(sb, KERN_ERR,
1632 "Cannot specify journal on remount"); 1525 "EXT4-fs: inode_readahead_blks"
1633 return 0; 1526 " must be a power of 2");
1527 return -1;
1634 } 1528 }
1635 if (match_int(&args[0], &option)) 1529 sbi->s_inode_readahead_blks = arg;
1636 return 0; 1530 } else if (token == Opt_init_itable) {
1637 *journal_devnum = option; 1531 set_opt(sb, INIT_INODE_TABLE);
1638 break; 1532 if (!args->from)
1639 case Opt_journal_checksum: 1533 arg = EXT4_DEF_LI_WAIT_MULT;
1640 set_opt(sb, JOURNAL_CHECKSUM); 1534 sbi->s_li_wait_mult = arg;
1641 break; 1535 } else if (token == Opt_stripe) {
1642 case Opt_journal_async_commit: 1536 sbi->s_stripe = arg;
1643 set_opt(sb, JOURNAL_ASYNC_COMMIT); 1537 } else if (m->flags & MOPT_DATAJ) {
1644 set_opt(sb, JOURNAL_CHECKSUM);
1645 break;
1646 case Opt_noload:
1647 set_opt(sb, NOLOAD);
1648 break;
1649 case Opt_commit:
1650 if (match_int(&args[0], &option))
1651 return 0;
1652 if (option < 0)
1653 return 0;
1654 if (option == 0)
1655 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
1656 sbi->s_commit_interval = HZ * option;
1657 break;
1658 case Opt_max_batch_time:
1659 if (match_int(&args[0], &option))
1660 return 0;
1661 if (option < 0)
1662 return 0;
1663 if (option == 0)
1664 option = EXT4_DEF_MAX_BATCH_TIME;
1665 sbi->s_max_batch_time = option;
1666 break;
1667 case Opt_min_batch_time:
1668 if (match_int(&args[0], &option))
1669 return 0;
1670 if (option < 0)
1671 return 0;
1672 sbi->s_min_batch_time = option;
1673 break;
1674 case Opt_data_journal:
1675 data_opt = EXT4_MOUNT_JOURNAL_DATA;
1676 goto datacheck;
1677 case Opt_data_ordered:
1678 data_opt = EXT4_MOUNT_ORDERED_DATA;
1679 goto datacheck;
1680 case Opt_data_writeback:
1681 data_opt = EXT4_MOUNT_WRITEBACK_DATA;
1682 datacheck:
1683 if (is_remount) { 1538 if (is_remount) {
1684 if (!sbi->s_journal) 1539 if (!sbi->s_journal)
1685 ext4_msg(sb, KERN_WARNING, "Remounting file system with no journal so ignoring journalled data option"); 1540 ext4_msg(sb, KERN_WARNING, "Remounting file system with no journal so ignoring journalled data option");
1686 else if (test_opt(sb, DATA_FLAGS) != data_opt) { 1541 else if (test_opt(sb, DATA_FLAGS) !=
1542 m->mount_opt) {
1687 ext4_msg(sb, KERN_ERR, 1543 ext4_msg(sb, KERN_ERR,
1688 "Cannot change data mode on remount"); 1544 "Cannot change data mode on remount");
1689 return 0; 1545 return -1;
1690 } 1546 }
1691 } else { 1547 } else {
1692 clear_opt(sb, DATA_FLAGS); 1548 clear_opt(sb, DATA_FLAGS);
1693 sbi->s_mount_opt |= data_opt; 1549 sbi->s_mount_opt |= m->mount_opt;
1694 } 1550 }
1695 break;
1696 case Opt_data_err_abort:
1697 set_opt(sb, DATA_ERR_ABORT);
1698 break;
1699 case Opt_data_err_ignore:
1700 clear_opt(sb, DATA_ERR_ABORT);
1701 break;
1702#ifdef CONFIG_QUOTA 1551#ifdef CONFIG_QUOTA
1703 case Opt_usrjquota: 1552 } else if (token == Opt_usrjquota) {
1704 if (!set_qf_name(sb, USRQUOTA, &args[0])) 1553 if (!set_qf_name(sb, USRQUOTA, &args[0]))
1705 return 0; 1554 return -1;
1706 break; 1555 } else if (token == Opt_grpjquota) {
1707 case Opt_grpjquota:
1708 if (!set_qf_name(sb, GRPQUOTA, &args[0])) 1556 if (!set_qf_name(sb, GRPQUOTA, &args[0]))
1709 return 0; 1557 return -1;
1710 break; 1558 } else if (token == Opt_offusrjquota) {
1711 case Opt_offusrjquota:
1712 if (!clear_qf_name(sb, USRQUOTA)) 1559 if (!clear_qf_name(sb, USRQUOTA))
1713 return 0; 1560 return -1;
1714 break; 1561 } else if (token == Opt_offgrpjquota) {
1715 case Opt_offgrpjquota:
1716 if (!clear_qf_name(sb, GRPQUOTA)) 1562 if (!clear_qf_name(sb, GRPQUOTA))
1717 return 0; 1563 return -1;
1718 break; 1564 } else if (m->flags & MOPT_QFMT) {
1719
1720 case Opt_jqfmt_vfsold:
1721 qfmt = QFMT_VFS_OLD;
1722 goto set_qf_format;
1723 case Opt_jqfmt_vfsv0:
1724 qfmt = QFMT_VFS_V0;
1725 goto set_qf_format;
1726 case Opt_jqfmt_vfsv1:
1727 qfmt = QFMT_VFS_V1;
1728set_qf_format:
1729 if (sb_any_quota_loaded(sb) && 1565 if (sb_any_quota_loaded(sb) &&
1730 sbi->s_jquota_fmt != qfmt) { 1566 sbi->s_jquota_fmt != m->mount_opt) {
1731 ext4_msg(sb, KERN_ERR, "Cannot change " 1567 ext4_msg(sb, KERN_ERR, "Cannot "
1732 "journaled quota options when " 1568 "change journaled quota options "
1733 "quota turned on"); 1569 "when quota turned on");
1734 return 0; 1570 return -1;
1735 }
1736 sbi->s_jquota_fmt = qfmt;
1737 break;
1738 case Opt_quota:
1739 case Opt_usrquota:
1740 set_opt(sb, QUOTA);
1741 set_opt(sb, USRQUOTA);
1742 break;
1743 case Opt_grpquota:
1744 set_opt(sb, QUOTA);
1745 set_opt(sb, GRPQUOTA);
1746 break;
1747 case Opt_noquota:
1748 if (sb_any_quota_loaded(sb)) {
1749 ext4_msg(sb, KERN_ERR, "Cannot change quota "
1750 "options when quota turned on");
1751 return 0;
1752 } 1571 }
1753 clear_opt(sb, QUOTA); 1572 sbi->s_jquota_fmt = m->mount_opt;
1754 clear_opt(sb, USRQUOTA);
1755 clear_opt(sb, GRPQUOTA);
1756 break;
1757#else
1758 case Opt_quota:
1759 case Opt_usrquota:
1760 case Opt_grpquota:
1761 ext4_msg(sb, KERN_ERR,
1762 "quota options not supported");
1763 break;
1764 case Opt_usrjquota:
1765 case Opt_grpjquota:
1766 case Opt_offusrjquota:
1767 case Opt_offgrpjquota:
1768 case Opt_jqfmt_vfsold:
1769 case Opt_jqfmt_vfsv0:
1770 case Opt_jqfmt_vfsv1:
1771 ext4_msg(sb, KERN_ERR,
1772 "journaled quota options not supported");
1773 break;
1774 case Opt_noquota:
1775 break;
1776#endif 1573#endif
1777 case Opt_abort: 1574 } else {
1778 sbi->s_mount_flags |= EXT4_MF_FS_ABORTED; 1575 if (!args->from)
1779 break; 1576 arg = 1;
1780 case Opt_nobarrier: 1577 if (m->flags & MOPT_CLEAR)
1781 clear_opt(sb, BARRIER); 1578 arg = !arg;
1782 break; 1579 else if (unlikely(!(m->flags & MOPT_SET))) {
1783 case Opt_barrier: 1580 ext4_msg(sb, KERN_WARNING,
1784 if (args[0].from) { 1581 "buggy handling of option %s", opt);
1785 if (match_int(&args[0], &option)) 1582 WARN_ON(1);
1786 return 0; 1583 return -1;
1787 } else
1788 option = 1; /* No argument, default to 1 */
1789 if (option)
1790 set_opt(sb, BARRIER);
1791 else
1792 clear_opt(sb, BARRIER);
1793 break;
1794 case Opt_ignore:
1795 break;
1796 case Opt_resize:
1797 if (!is_remount) {
1798 ext4_msg(sb, KERN_ERR,
1799 "resize option only available "
1800 "for remount");
1801 return 0;
1802 }
1803 if (match_int(&args[0], &option) != 0)
1804 return 0;
1805 *n_blocks_count = option;
1806 break;
1807 case Opt_nobh:
1808 ext4_msg(sb, KERN_WARNING,
1809 "Ignoring deprecated nobh option");
1810 break;
1811 case Opt_bh:
1812 ext4_msg(sb, KERN_WARNING,
1813 "Ignoring deprecated bh option");
1814 break;
1815 case Opt_i_version:
1816 set_opt(sb, I_VERSION);
1817 sb->s_flags |= MS_I_VERSION;
1818 break;
1819 case Opt_nodelalloc:
1820 clear_opt(sb, DELALLOC);
1821 clear_opt2(sb, EXPLICIT_DELALLOC);
1822 break;
1823 case Opt_mblk_io_submit:
1824 set_opt(sb, MBLK_IO_SUBMIT);
1825 break;
1826 case Opt_nomblk_io_submit:
1827 clear_opt(sb, MBLK_IO_SUBMIT);
1828 break;
1829 case Opt_stripe:
1830 if (match_int(&args[0], &option))
1831 return 0;
1832 if (option < 0)
1833 return 0;
1834 sbi->s_stripe = option;
1835 break;
1836 case Opt_delalloc:
1837 set_opt(sb, DELALLOC);
1838 set_opt2(sb, EXPLICIT_DELALLOC);
1839 break;
1840 case Opt_block_validity:
1841 set_opt(sb, BLOCK_VALIDITY);
1842 break;
1843 case Opt_noblock_validity:
1844 clear_opt(sb, BLOCK_VALIDITY);
1845 break;
1846 case Opt_inode_readahead_blks:
1847 if (match_int(&args[0], &option))
1848 return 0;
1849 if (option < 0 || option > (1 << 30))
1850 return 0;
1851 if (option && !is_power_of_2(option)) {
1852 ext4_msg(sb, KERN_ERR,
1853 "EXT4-fs: inode_readahead_blks"
1854 " must be a power of 2");
1855 return 0;
1856 } 1584 }
1857 sbi->s_inode_readahead_blks = option; 1585 if (arg != 0)
1858 break; 1586 sbi->s_mount_opt |= m->mount_opt;
1859 case Opt_journal_ioprio:
1860 if (match_int(&args[0], &option))
1861 return 0;
1862 if (option < 0 || option > 7)
1863 break;
1864 *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE,
1865 option);
1866 break;
1867 case Opt_noauto_da_alloc:
1868 set_opt(sb, NO_AUTO_DA_ALLOC);
1869 break;
1870 case Opt_auto_da_alloc:
1871 if (args[0].from) {
1872 if (match_int(&args[0], &option))
1873 return 0;
1874 } else
1875 option = 1; /* No argument, default to 1 */
1876 if (option)
1877 clear_opt(sb, NO_AUTO_DA_ALLOC);
1878 else 1587 else
1879 set_opt(sb,NO_AUTO_DA_ALLOC); 1588 sbi->s_mount_opt &= ~m->mount_opt;
1880 break;
1881 case Opt_discard:
1882 set_opt(sb, DISCARD);
1883 break;
1884 case Opt_nodiscard:
1885 clear_opt(sb, DISCARD);
1886 break;
1887 case Opt_dioread_nolock:
1888 set_opt(sb, DIOREAD_NOLOCK);
1889 break;
1890 case Opt_dioread_lock:
1891 clear_opt(sb, DIOREAD_NOLOCK);
1892 break;
1893 case Opt_init_itable:
1894 set_opt(sb, INIT_INODE_TABLE);
1895 if (args[0].from) {
1896 if (match_int(&args[0], &option))
1897 return 0;
1898 } else
1899 option = EXT4_DEF_LI_WAIT_MULT;
1900 if (option < 0)
1901 return 0;
1902 sbi->s_li_wait_mult = option;
1903 break;
1904 case Opt_noinit_itable:
1905 clear_opt(sb, INIT_INODE_TABLE);
1906 break;
1907 default:
1908 ext4_msg(sb, KERN_ERR,
1909 "Unrecognized mount option \"%s\" "
1910 "or missing value", p);
1911 return 0;
1912 } 1589 }
1590 return 1;
1591 }
1592 ext4_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" "
1593 "or missing value", opt);
1594 return -1;
1595}
1596
1597static int parse_options(char *options, struct super_block *sb,
1598 unsigned long *journal_devnum,
1599 unsigned int *journal_ioprio,
1600 int is_remount)
1601{
1602 struct ext4_sb_info *sbi = EXT4_SB(sb);
1603 char *p;
1604 substring_t args[MAX_OPT_ARGS];
1605 int token;
1606
1607 if (!options)
1608 return 1;
1609
1610 while ((p = strsep(&options, ",")) != NULL) {
1611 if (!*p)
1612 continue;
1613 /*
1614 * Initialize args struct so we know whether arg was
1615 * found; some options take optional arguments.
1616 */
1617 args[0].to = args[0].from = 0;
1618 token = match_token(p, tokens, args);
1619 if (handle_mount_opt(sb, p, token, args, journal_devnum,
1620 journal_ioprio, is_remount) < 0)
1621 return 0;
1913 } 1622 }
1914#ifdef CONFIG_QUOTA 1623#ifdef CONFIG_QUOTA
1915 if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { 1624 if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
@@ -1942,6 +1651,160 @@ set_qf_format:
1942 return 1; 1651 return 1;
1943} 1652}
1944 1653
1654static inline void ext4_show_quota_options(struct seq_file *seq,
1655 struct super_block *sb)
1656{
1657#if defined(CONFIG_QUOTA)
1658 struct ext4_sb_info *sbi = EXT4_SB(sb);
1659
1660 if (sbi->s_jquota_fmt) {
1661 char *fmtname = "";
1662
1663 switch (sbi->s_jquota_fmt) {
1664 case QFMT_VFS_OLD:
1665 fmtname = "vfsold";
1666 break;
1667 case QFMT_VFS_V0:
1668 fmtname = "vfsv0";
1669 break;
1670 case QFMT_VFS_V1:
1671 fmtname = "vfsv1";
1672 break;
1673 }
1674 seq_printf(seq, ",jqfmt=%s", fmtname);
1675 }
1676
1677 if (sbi->s_qf_names[USRQUOTA])
1678 seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
1679
1680 if (sbi->s_qf_names[GRPQUOTA])
1681 seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
1682
1683 if (test_opt(sb, USRQUOTA))
1684 seq_puts(seq, ",usrquota");
1685
1686 if (test_opt(sb, GRPQUOTA))
1687 seq_puts(seq, ",grpquota");
1688#endif
1689}
1690
1691static const char *token2str(int token)
1692{
1693 static const struct match_token *t;
1694
1695 for (t = tokens; t->token != Opt_err; t++)
1696 if (t->token == token && !strchr(t->pattern, '='))
1697 break;
1698 return t->pattern;
1699}
1700
1701/*
1702 * Show an option if
1703 * - it's set to a non-default value OR
1704 * - if the per-sb default is different from the global default
1705 */
1706static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
1707 int nodefs)
1708{
1709 struct ext4_sb_info *sbi = EXT4_SB(sb);
1710 struct ext4_super_block *es = sbi->s_es;
1711 int def_errors, def_mount_opt = nodefs ? 0 : sbi->s_def_mount_opt;
1712 const struct mount_opts *m;
1713 char sep = nodefs ? '\n' : ',';
1714
1715#define SEQ_OPTS_PUTS(str) seq_printf(seq, "%c" str, sep)
1716#define SEQ_OPTS_PRINT(str, arg) seq_printf(seq, "%c" str, sep, arg)
1717
1718 if (sbi->s_sb_block != 1)
1719 SEQ_OPTS_PRINT("sb=%llu", sbi->s_sb_block);
1720
1721 for (m = ext4_mount_opts; m->token != Opt_err; m++) {
1722 int want_set = m->flags & MOPT_SET;
1723 if (((m->flags & (MOPT_SET|MOPT_CLEAR)) == 0) ||
1724 (m->flags & MOPT_CLEAR_ERR))
1725 continue;
1726 if (!(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt)))
1727 continue; /* skip if same as the default */
1728 if ((want_set &&
1729 (sbi->s_mount_opt & m->mount_opt) != m->mount_opt) ||
1730 (!want_set && (sbi->s_mount_opt & m->mount_opt)))
1731 continue; /* select Opt_noFoo vs Opt_Foo */
1732 SEQ_OPTS_PRINT("%s", token2str(m->token));
1733 }
1734
1735 if (nodefs || sbi->s_resuid != EXT4_DEF_RESUID ||
1736 le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID)
1737 SEQ_OPTS_PRINT("resuid=%u", sbi->s_resuid);
1738 if (nodefs || sbi->s_resgid != EXT4_DEF_RESGID ||
1739 le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID)
1740 SEQ_OPTS_PRINT("resgid=%u", sbi->s_resgid);
1741 def_errors = nodefs ? -1 : le16_to_cpu(es->s_errors);
1742 if (test_opt(sb, ERRORS_RO) && def_errors != EXT4_ERRORS_RO)
1743 SEQ_OPTS_PUTS("errors=remount-ro");
1744 if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE)
1745 SEQ_OPTS_PUTS("errors=continue");
1746 if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC)
1747 SEQ_OPTS_PUTS("errors=panic");
1748 if (nodefs || sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ)
1749 SEQ_OPTS_PRINT("commit=%lu", sbi->s_commit_interval / HZ);
1750 if (nodefs || sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME)
1751 SEQ_OPTS_PRINT("min_batch_time=%u", sbi->s_min_batch_time);
1752 if (nodefs || sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME)
1753 SEQ_OPTS_PRINT("max_batch_time=%u", sbi->s_max_batch_time);
1754 if (sb->s_flags & MS_I_VERSION)
1755 SEQ_OPTS_PUTS("i_version");
1756 if (nodefs || sbi->s_stripe)
1757 SEQ_OPTS_PRINT("stripe=%lu", sbi->s_stripe);
1758 if (EXT4_MOUNT_DATA_FLAGS & (sbi->s_mount_opt ^ def_mount_opt)) {
1759 if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
1760 SEQ_OPTS_PUTS("data=journal");
1761 else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
1762 SEQ_OPTS_PUTS("data=ordered");
1763 else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
1764 SEQ_OPTS_PUTS("data=writeback");
1765 }
1766 if (nodefs ||
1767 sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS)
1768 SEQ_OPTS_PRINT("inode_readahead_blks=%u",
1769 sbi->s_inode_readahead_blks);
1770
1771 if (nodefs || (test_opt(sb, INIT_INODE_TABLE) &&
1772 (sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT)))
1773 SEQ_OPTS_PRINT("init_itable=%u", sbi->s_li_wait_mult);
1774
1775 ext4_show_quota_options(seq, sb);
1776 return 0;
1777}
1778
1779static int ext4_show_options(struct seq_file *seq, struct dentry *root)
1780{
1781 return _ext4_show_options(seq, root->d_sb, 0);
1782}
1783
1784static int options_seq_show(struct seq_file *seq, void *offset)
1785{
1786 struct super_block *sb = seq->private;
1787 int rc;
1788
1789 seq_puts(seq, (sb->s_flags & MS_RDONLY) ? "ro" : "rw");
1790 rc = _ext4_show_options(seq, sb, 1);
1791 seq_puts(seq, "\n");
1792 return rc;
1793}
1794
1795static int options_open_fs(struct inode *inode, struct file *file)
1796{
1797 return single_open(file, options_seq_show, PDE(inode)->data);
1798}
1799
1800static const struct file_operations ext4_seq_options_fops = {
1801 .owner = THIS_MODULE,
1802 .open = options_open_fs,
1803 .read = seq_read,
1804 .llseek = seq_lseek,
1805 .release = single_release,
1806};
1807
1945static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es, 1808static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
1946 int read_only) 1809 int read_only)
1947{ 1810{
@@ -2945,7 +2808,7 @@ static int ext4_run_lazyinit_thread(void)
2945 ext4_clear_request_list(); 2808 ext4_clear_request_list();
2946 kfree(ext4_li_info); 2809 kfree(ext4_li_info);
2947 ext4_li_info = NULL; 2810 ext4_li_info = NULL;
2948 printk(KERN_CRIT "EXT4: error %d creating inode table " 2811 printk(KERN_CRIT "EXT4-fs: error %d creating inode table "
2949 "initialization thread\n", 2812 "initialization thread\n",
2950 err); 2813 err);
2951 return err; 2814 return err;
@@ -3183,11 +3046,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
3183 set_opt(sb, INIT_INODE_TABLE); 3046 set_opt(sb, INIT_INODE_TABLE);
3184 if (def_mount_opts & EXT4_DEFM_DEBUG) 3047 if (def_mount_opts & EXT4_DEFM_DEBUG)
3185 set_opt(sb, DEBUG); 3048 set_opt(sb, DEBUG);
3186 if (def_mount_opts & EXT4_DEFM_BSDGROUPS) { 3049 if (def_mount_opts & EXT4_DEFM_BSDGROUPS)
3187 ext4_msg(sb, KERN_WARNING, deprecated_msg, "bsdgroups",
3188 "2.6.38");
3189 set_opt(sb, GRPID); 3050 set_opt(sb, GRPID);
3190 }
3191 if (def_mount_opts & EXT4_DEFM_UID16) 3051 if (def_mount_opts & EXT4_DEFM_UID16)
3192 set_opt(sb, NO_UID32); 3052 set_opt(sb, NO_UID32);
3193 /* xattr user namespace & acls are now defaulted on */ 3053 /* xattr user namespace & acls are now defaulted on */
@@ -3240,13 +3100,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
3240 sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT; 3100 sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
3241 3101
3242 if (!parse_options((char *) sbi->s_es->s_mount_opts, sb, 3102 if (!parse_options((char *) sbi->s_es->s_mount_opts, sb,
3243 &journal_devnum, &journal_ioprio, NULL, 0)) { 3103 &journal_devnum, &journal_ioprio, 0)) {
3244 ext4_msg(sb, KERN_WARNING, 3104 ext4_msg(sb, KERN_WARNING,
3245 "failed to parse options in superblock: %s", 3105 "failed to parse options in superblock: %s",
3246 sbi->s_es->s_mount_opts); 3106 sbi->s_es->s_mount_opts);
3247 } 3107 }
3108 sbi->s_def_mount_opt = sbi->s_mount_opt;
3248 if (!parse_options((char *) data, sb, &journal_devnum, 3109 if (!parse_options((char *) data, sb, &journal_devnum,
3249 &journal_ioprio, NULL, 0)) 3110 &journal_ioprio, 0))
3250 goto failed_mount; 3111 goto failed_mount;
3251 3112
3252 if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) { 3113 if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
@@ -3416,7 +3277,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
3416#else 3277#else
3417 es->s_flags |= cpu_to_le32(EXT2_FLAGS_SIGNED_HASH); 3278 es->s_flags |= cpu_to_le32(EXT2_FLAGS_SIGNED_HASH);
3418#endif 3279#endif
3419 sb->s_dirt = 1;
3420 } 3280 }
3421 3281
3422 /* Handle clustersize */ 3282 /* Handle clustersize */
@@ -3540,6 +3400,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
3540 if (ext4_proc_root) 3400 if (ext4_proc_root)
3541 sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root); 3401 sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
3542 3402
3403 if (sbi->s_proc)
3404 proc_create_data("options", S_IRUGO, sbi->s_proc,
3405 &ext4_seq_options_fops, sb);
3406
3543 bgl_lock_init(sbi->s_blockgroup_lock); 3407 bgl_lock_init(sbi->s_blockgroup_lock);
3544 3408
3545 for (i = 0; i < db_count; i++) { 3409 for (i = 0; i < db_count; i++) {
@@ -3694,6 +3558,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
3694 } 3558 }
3695 set_task_ioprio(sbi->s_journal->j_task, journal_ioprio); 3559 set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
3696 3560
3561 sbi->s_journal->j_commit_callback = ext4_journal_commit_callback;
3562
3697 /* 3563 /*
3698 * The journal may have updated the bg summary counts, so we 3564 * The journal may have updated the bg summary counts, so we
3699 * need to update the global counters. 3565 * need to update the global counters.
@@ -3861,6 +3727,7 @@ failed_mount2:
3861 ext4_kvfree(sbi->s_group_desc); 3727 ext4_kvfree(sbi->s_group_desc);
3862failed_mount: 3728failed_mount:
3863 if (sbi->s_proc) { 3729 if (sbi->s_proc) {
3730 remove_proc_entry("options", sbi->s_proc);
3864 remove_proc_entry(sb->s_id, ext4_proc_root); 3731 remove_proc_entry(sb->s_id, ext4_proc_root);
3865 } 3732 }
3866#ifdef CONFIG_QUOTA 3733#ifdef CONFIG_QUOTA
@@ -4090,15 +3957,6 @@ static int ext4_load_journal(struct super_block *sb,
4090 if (!(journal->j_flags & JBD2_BARRIER)) 3957 if (!(journal->j_flags & JBD2_BARRIER))
4091 ext4_msg(sb, KERN_INFO, "barriers disabled"); 3958 ext4_msg(sb, KERN_INFO, "barriers disabled");
4092 3959
4093 if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {
4094 err = jbd2_journal_update_format(journal);
4095 if (err) {
4096 ext4_msg(sb, KERN_ERR, "error updating journal");
4097 jbd2_journal_destroy(journal);
4098 return err;
4099 }
4100 }
4101
4102 if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) 3960 if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER))
4103 err = jbd2_journal_wipe(journal, !really_read_only); 3961 err = jbd2_journal_wipe(journal, !really_read_only);
4104 if (!err) { 3962 if (!err) {
@@ -4385,7 +4243,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
4385{ 4243{
4386 struct ext4_super_block *es; 4244 struct ext4_super_block *es;
4387 struct ext4_sb_info *sbi = EXT4_SB(sb); 4245 struct ext4_sb_info *sbi = EXT4_SB(sb);
4388 ext4_fsblk_t n_blocks_count = 0;
4389 unsigned long old_sb_flags; 4246 unsigned long old_sb_flags;
4390 struct ext4_mount_options old_opts; 4247 struct ext4_mount_options old_opts;
4391 int enable_quota = 0; 4248 int enable_quota = 0;
@@ -4418,8 +4275,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
4418 /* 4275 /*
4419 * Allow the "check" option to be passed as a remount option. 4276 * Allow the "check" option to be passed as a remount option.
4420 */ 4277 */
4421 if (!parse_options(data, sb, NULL, &journal_ioprio, 4278 if (!parse_options(data, sb, NULL, &journal_ioprio, 1)) {
4422 &n_blocks_count, 1)) {
4423 err = -EINVAL; 4279 err = -EINVAL;
4424 goto restore_opts; 4280 goto restore_opts;
4425 } 4281 }
@@ -4437,8 +4293,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
4437 set_task_ioprio(sbi->s_journal->j_task, journal_ioprio); 4293 set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
4438 } 4294 }
4439 4295
4440 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) || 4296 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
4441 n_blocks_count > ext4_blocks_count(es)) {
4442 if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) { 4297 if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
4443 err = -EROFS; 4298 err = -EROFS;
4444 goto restore_opts; 4299 goto restore_opts;
@@ -4513,8 +4368,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
4513 if (sbi->s_journal) 4368 if (sbi->s_journal)
4514 ext4_clear_journal_err(sb, es); 4369 ext4_clear_journal_err(sb, es);
4515 sbi->s_mount_state = le16_to_cpu(es->s_state); 4370 sbi->s_mount_state = le16_to_cpu(es->s_state);
4516 if ((err = ext4_group_extend(sb, es, n_blocks_count)))
4517 goto restore_opts;
4518 if (!ext4_setup_super(sb, es, 0)) 4371 if (!ext4_setup_super(sb, es, 0))
4519 sb->s_flags &= ~MS_RDONLY; 4372 sb->s_flags &= ~MS_RDONLY;
4520 if (EXT4_HAS_INCOMPAT_FEATURE(sb, 4373 if (EXT4_HAS_INCOMPAT_FEATURE(sb,
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-23 11:21:37 -0500