__jbd2_journal_file_buffer
__jbd2_journal_file_buffer(jh_in, transaction, BJ_Shadow);
__jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
__jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
__jbd2_journal_file_buffer(jh, transaction, BJ_Metadata);
__jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
__jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
__jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
__jbd2_journal_file_buffer(jh, transaction, jlist);
__jbd2_journal_file_buffer(jh, jh->b_transaction, jlist);
extern void __jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);