742 struct journal_s  struct
771 	journal_superblock_t	*j_superblock;  argument
776 	rwlock_t		j_state_lock;
784 	int			j_barrier_count;
789 	struct mutex		j_barrier;
798 	transaction_t		*j_running_transaction;
806 	transaction_t		*j_committing_transaction;
814 	transaction_t		*j_checkpoint_transactions;
822 	wait_queue_head_t	j_wait_transaction_locked;
827 	wait_queue_head_t	j_wait_done_commit;
832 	wait_queue_head_t	j_wait_commit;
837 	wait_queue_head_t	j_wait_updates;
844 	wait_queue_head_t	j_wait_reserved;
851 	wait_queue_head_t	j_fc_wait;
858 	struct mutex		j_checkpoint_mutex;
868 	struct buffer_head	*j_chkpt_bhs[JBD2_NR_BATCH];
876 	struct shrinker		*j_shrinker;
883 	struct percpu_counter	j_checkpoint_jh_count;
891 	transaction_t		*j_shrink_transaction;
899 	unsigned long		j_head;
907 	unsigned long		j_tail;
915 	unsigned long		j_free;
923 	unsigned long		j_first;
931 	unsigned long		j_last;
939 	unsigned long		j_fc_first;
948 	unsigned long		j_fc_off;
956 	unsigned long		j_fc_last;
961 	struct block_device	*j_dev;
966 	int			j_blocksize;
973 	unsigned long long	j_blk_offset;
978 	char			j_devname[BDEVNAME_SIZE+24];
986 	struct block_device	*j_fs_dev;
993 	errseq_t		j_fs_dev_wb_err;
998 	unsigned int		j_total_len;
1005 	atomic_t		j_reserved_credits;
1010 	spinlock_t		j_list_lock;
1018 	struct inode		*j_inode;
1025 	tid_t			j_tail_sequence;
1032 	tid_t			j_transaction_sequence;
1040 	tid_t			j_commit_sequence;
1048 	tid_t			j_commit_request;
1058 	__u8			j_uuid[16];
1063 	struct task_struct	*j_task;
1071 	int			j_max_transaction_buffers;
1078 	int			j_revoke_records_per_block;
1085 	int			j_transaction_overhead_buffers;
1092 	unsigned long		j_commit_interval;
1097 	struct timer_list	j_commit_timer;
1102 	spinlock_t		j_revoke_lock;
1110 	struct jbd2_revoke_table_s *j_revoke;
1115 	struct jbd2_revoke_table_s *j_revoke_table[2];
1120 	struct buffer_head	**j_wbuf;
1127 	struct buffer_head	**j_fc_wbuf;
1134 	int			j_wbufsize;
1141 	int			j_fc_wbufsize;
1149 	pid_t			j_last_sync_writer;
1157 	u64			j_average_commit_time;
1165 	u32			j_min_batch_time;
1173 	u32			j_max_batch_time;
1180 	void			(*j_commit_callback)(journal_t *,
1190 	int			(*j_submit_inode_data_buffers)
1201 	int			(*j_finish_inode_data_buffers)
1211 	spinlock_t		j_history_lock;
1216 	struct proc_dir_entry	*j_proc_entry;
1221 	struct transaction_stats_s j_stats;
1226 	unsigned int		j_failed_commit;
1234 	void *j_private;
1263 	void (*j_fc_cleanup_callback)(struct journal_s *journal, int full, tid_t tid);  argument
1276 	int (*j_fc_replay_callback)(struct journal_s *journal,  argument
1287 	int (*j_bmap)(struct journal_s *journal, sector_t *block);  argument