774 struct journal_s  struct
780 	unsigned long		j_flags;
808 	journal_superblock_t	*j_superblock;  argument
813 	int			j_format_version;
818 	rwlock_t		j_state_lock;
826 	int			j_barrier_count;
831 	struct mutex		j_barrier;
840 	transaction_t		*j_running_transaction;
848 	transaction_t		*j_committing_transaction;
856 	transaction_t		*j_checkpoint_transactions;
864 	wait_queue_head_t	j_wait_transaction_locked;
869 	wait_queue_head_t	j_wait_done_commit;
874 	wait_queue_head_t	j_wait_commit;
879 	wait_queue_head_t	j_wait_updates;
886 	wait_queue_head_t	j_wait_reserved;
893 	wait_queue_head_t	j_fc_wait;
900 	struct mutex		j_checkpoint_mutex;
910 	struct buffer_head	*j_chkpt_bhs[JBD2_NR_BATCH];
918 	struct shrinker		j_shrinker;
925 	struct percpu_counter	j_checkpoint_jh_count;
933 	transaction_t		*j_shrink_transaction;
941 	unsigned long		j_head;
949 	unsigned long		j_tail;
957 	unsigned long		j_free;
965 	unsigned long		j_first;
973 	unsigned long		j_last;
981 	unsigned long		j_fc_first;
990 	unsigned long		j_fc_off;
998 	unsigned long		j_fc_last;
1003 	struct block_device	*j_dev;
1008 	int			j_blocksize;
1015 	unsigned long long	j_blk_offset;
1020 	char			j_devname[BDEVNAME_SIZE+24];
1028 	struct block_device	*j_fs_dev;
1033 	unsigned int		j_total_len;
1040 	atomic_t		j_reserved_credits;
1045 	spinlock_t		j_list_lock;
1053 	struct inode		*j_inode;
1060 	tid_t			j_tail_sequence;
1067 	tid_t			j_transaction_sequence;
1075 	tid_t			j_commit_sequence;
1083 	tid_t			j_commit_request;
1093 	__u8			j_uuid[16];
1098 	struct task_struct	*j_task;
1106 	int			j_max_transaction_buffers;
1113 	int			j_revoke_records_per_block;
1120 	unsigned long		j_commit_interval;
1125 	struct timer_list	j_commit_timer;
1130 	spinlock_t		j_revoke_lock;
1138 	struct jbd2_revoke_table_s *j_revoke;
1143 	struct jbd2_revoke_table_s *j_revoke_table[2];
1148 	struct buffer_head	**j_wbuf;
1155 	struct buffer_head	**j_fc_wbuf;
1162 	int			j_wbufsize;
1169 	int			j_fc_wbufsize;
1177 	pid_t			j_last_sync_writer;
1185 	u64			j_average_commit_time;
1193 	u32			j_min_batch_time;
1201 	u32			j_max_batch_time;
1208 	void			(*j_commit_callback)(journal_t *,
1218 	int			(*j_submit_inode_data_buffers)
1229 	int			(*j_finish_inode_data_buffers)
1239 	spinlock_t		j_history_lock;
1244 	struct proc_dir_entry	*j_proc_entry;
1249 	struct transaction_stats_s j_stats;
1254 	unsigned int		j_failed_commit;
1262 	void *j_private;
1269 	struct crypto_shash *j_chksum_driver;
1298 	void (*j_fc_cleanup_callback)(struct journal_s *journal, int);  argument
1311 	int (*j_fc_replay_callback)(struct journal_s *journal,  argument