diff options
Diffstat (limited to 'fs/jbd2/journal.c')
| -rw-r--r-- | fs/jbd2/journal.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 837a9a85e585..b5e57735ab3f 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1559,8 +1559,21 @@ static int journal_reset(journal_t *journal) journal->j_first = first; journal->j_last = last; - journal->j_head = journal->j_first; - journal->j_tail = journal->j_first; + if (journal->j_head != 0 && journal->j_flags & JBD2_CYCLE_RECORD) { + /* + * Disable the cycled recording mode if the journal head block + * number is not correct. + */ + if (journal->j_head < first || journal->j_head >= last) { + printk(KERN_WARNING "JBD2: Incorrect Journal head block %lu, " + "disable journal_cycle_record\n", + journal->j_head); + journal->j_head = journal->j_first; + } + } else { + journal->j_head = journal->j_first; + } + journal->j_tail = journal->j_head; journal->j_free = journal->j_last - journal->j_first; journal->j_tail_sequence = journal->j_transaction_sequence; @@ -1732,6 +1745,7 @@ static void jbd2_mark_journal_empty(journal_t *journal, blk_opf_t write_flags) sb->s_sequence = cpu_to_be32(journal->j_tail_sequence); sb->s_start = cpu_to_be32(0); + sb->s_head = cpu_to_be32(journal->j_head); if (jbd2_has_feature_fast_commit(journal)) { /* * When journal is clean, no need to commit fast commit flag and |