770 struct journal_s  struct
776 	unsigned long		j_flags;
804 	journal_superblock_t	*j_superblock;  argument
809 	int			j_format_version;
814 	rwlock_t		j_state_lock;
822 	int			j_barrier_count;
827 	struct mutex		j_barrier;
836 	transaction_t		*j_running_transaction;
844 	transaction_t		*j_committing_transaction;
852 	transaction_t		*j_checkpoint_transactions;
860 	wait_queue_head_t	j_wait_transaction_locked;
865 	wait_queue_head_t	j_wait_done_commit;
870 	wait_queue_head_t	j_wait_commit;
875 	wait_queue_head_t	j_wait_updates;
882 	wait_queue_head_t	j_wait_reserved;
889 	wait_queue_head_t	j_fc_wait;
896 	struct mutex		j_checkpoint_mutex;
906 	struct buffer_head	*j_chkpt_bhs[JBD2_NR_BATCH];
914 	struct shrinker		j_shrinker;
921 	struct percpu_counter	j_checkpoint_jh_count;
929 	transaction_t		*j_shrink_transaction;
937 	unsigned long		j_head;
945 	unsigned long		j_tail;
953 	unsigned long		j_free;
961 	unsigned long		j_first;
969 	unsigned long		j_last;
977 	unsigned long		j_fc_first;
986 	unsigned long		j_fc_off;
994 	unsigned long		j_fc_last;
999 	struct block_device	*j_dev;
1004 	int			j_blocksize;
1011 	unsigned long long	j_blk_offset;
1016 	char			j_devname[BDEVNAME_SIZE+24];
1024 	struct block_device	*j_fs_dev;
1029 	unsigned int		j_total_len;
1036 	atomic_t		j_reserved_credits;
1041 	spinlock_t		j_list_lock;
1049 	struct inode		*j_inode;
1056 	tid_t			j_tail_sequence;
1063 	tid_t			j_transaction_sequence;
1071 	tid_t			j_commit_sequence;
1079 	tid_t			j_commit_request;
1089 	__u8			j_uuid[16];
1094 	struct task_struct	*j_task;
1102 	int			j_max_transaction_buffers;
1109 	int			j_revoke_records_per_block;
1116 	unsigned long		j_commit_interval;
1121 	struct timer_list	j_commit_timer;
1126 	spinlock_t		j_revoke_lock;
1134 	struct jbd2_revoke_table_s *j_revoke;
1139 	struct jbd2_revoke_table_s *j_revoke_table[2];
1144 	struct buffer_head	**j_wbuf;
1151 	struct buffer_head	**j_fc_wbuf;
1158 	int			j_wbufsize;
1165 	int			j_fc_wbufsize;
1173 	pid_t			j_last_sync_writer;
1181 	u64			j_average_commit_time;
1189 	u32			j_min_batch_time;
1197 	u32			j_max_batch_time;
1204 	void			(*j_commit_callback)(journal_t *,
1214 	int			(*j_submit_inode_data_buffers)
1225 	int			(*j_finish_inode_data_buffers)
1235 	spinlock_t		j_history_lock;
1240 	struct proc_dir_entry	*j_proc_entry;
1245 	struct transaction_stats_s j_stats;
1250 	unsigned int		j_failed_commit;
1258 	void *j_private;
1265 	struct crypto_shash *j_chksum_driver;
1294 	void (*j_fc_cleanup_callback)(struct journal_s *journal, int full, tid_t tid);  argument
1307 	int (*j_fc_replay_callback)(struct journal_s *journal,  argument