jbd2_journal_get_log_tail  404 fs/jbd2/checkpoint.c 	if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr))
jbd2_journal_get_log_tail  756 fs/jbd2/commit.c 		jbd2_journal_get_log_tail(journal, &first_tid, &first_block);
jbd2_journal_get_log_tail 1279 include/linux/jbd2.h int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,