3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Theodore Ts'o <tytso@xxxxxxx> commit 85e0c4e89c1b864e763c4e3bb15d0b6d501ad5d9 upstream. This updates the jbd2 superblock unnecessarily, and on an abort we shouldn't truncate the log. Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/jbd2/journal.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -923,7 +923,7 @@ out: } /* - * This is a variaon of __jbd2_update_log_tail which checks for validity of + * This is a variation of __jbd2_update_log_tail which checks for validity of * provided log tail and locks j_checkpoint_mutex. So it is safe against races * with other threads updating log tail. */ @@ -1399,6 +1399,9 @@ int jbd2_journal_update_sb_log_tail(jour journal_superblock_t *sb = journal->j_superblock; int ret; + if (is_journal_aborted(journal)) + return -EIO; + BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex)); jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n", tail_block, tail_tid);