extern int jbd2_journal_test_revoke(journal_t *, unsigned long long, tid_t);
extern void jbd2_journal_clear_revoke(journal_t *);
extern void jbd2_journal_switch_revoke_table(journal_t *journal);
+extern void jbd2_clear_buffer_revoked_flags(journal_t *journal);
/*
* The log thread user interface: