jbd2_journal_check_available_features 4422 fs/ext4/super.c if (jbd2_journal_check_available_features jbd2_journal_check_available_features 4434 fs/ext4/super.c if (!jbd2_journal_check_available_features jbd2_journal_check_available_features 75 fs/jbd2/journal.c EXPORT_SYMBOL(jbd2_journal_check_available_features); jbd2_journal_check_available_features 1872 fs/jbd2/journal.c if (!jbd2_journal_check_available_features(journal, compat, ro, incompat)) jbd2_journal_check_available_features 1391 include/linux/jbd2.h extern int jbd2_journal_check_available_features