750 struct journal_s  struct
756 	unsigned long		j_flags;
784 	journal_superblock_t	*j_superblock;  argument
789 	rwlock_t		j_state_lock;
797 	int			j_barrier_count;
802 	struct mutex		j_barrier;
811 	transaction_t		*j_running_transaction;
819 	transaction_t		*j_committing_transaction;
827 	transaction_t		*j_checkpoint_transactions;
835 	wait_queue_head_t	j_wait_transaction_locked;
840 	wait_queue_head_t	j_wait_done_commit;
845 	wait_queue_head_t	j_wait_commit;
850 	wait_queue_head_t	j_wait_updates;
857 	wait_queue_head_t	j_wait_reserved;
864 	wait_queue_head_t	j_fc_wait;
871 	struct mutex		j_checkpoint_mutex;
881 	struct buffer_head	*j_chkpt_bhs[JBD2_NR_BATCH];
889 	struct shrinker		j_shrinker;
896 	struct percpu_counter	j_checkpoint_jh_count;
904 	transaction_t		*j_shrink_transaction;
912 	unsigned long		j_head;
920 	unsigned long		j_tail;
928 	unsigned long		j_free;
936 	unsigned long		j_first;
944 	unsigned long		j_last;
952 	unsigned long		j_fc_first;
961 	unsigned long		j_fc_off;
969 	unsigned long		j_fc_last;
974 	struct block_device	*j_dev;
979 	int			j_blocksize;
986 	unsigned long long	j_blk_offset;
991 	char			j_devname[BDEVNAME_SIZE+24];
999 	struct block_device	*j_fs_dev;
1004 	unsigned int		j_total_len;
1011 	atomic_t		j_reserved_credits;
1016 	spinlock_t		j_list_lock;
1024 	struct inode		*j_inode;
1031 	tid_t			j_tail_sequence;
1038 	tid_t			j_transaction_sequence;
1046 	tid_t			j_commit_sequence;
1054 	tid_t			j_commit_request;
1064 	__u8			j_uuid[16];
1069 	struct task_struct	*j_task;
1077 	int			j_max_transaction_buffers;
1084 	int			j_revoke_records_per_block;
1091 	unsigned long		j_commit_interval;
1096 	struct timer_list	j_commit_timer;
1101 	spinlock_t		j_revoke_lock;
1109 	struct jbd2_revoke_table_s *j_revoke;
1114 	struct jbd2_revoke_table_s *j_revoke_table[2];
1119 	struct buffer_head	**j_wbuf;
1126 	struct buffer_head	**j_fc_wbuf;
1133 	int			j_wbufsize;
1140 	int			j_fc_wbufsize;
1148 	pid_t			j_last_sync_writer;
1156 	u64			j_average_commit_time;
1164 	u32			j_min_batch_time;
1172 	u32			j_max_batch_time;
1179 	void			(*j_commit_callback)(journal_t *,
1189 	int			(*j_submit_inode_data_buffers)
1200 	int			(*j_finish_inode_data_buffers)
1210 	spinlock_t		j_history_lock;
1215 	struct proc_dir_entry	*j_proc_entry;
1220 	struct transaction_stats_s j_stats;
1225 	unsigned int		j_failed_commit;
1233 	void *j_private;
1240 	struct crypto_shash *j_chksum_driver;
1269 	void (*j_fc_cleanup_callback)(struct journal_s *journal, int full, tid_t tid);  argument
1282 	int (*j_fc_replay_callback)(struct journal_s *journal,  argument
1293 	int (*j_bmap)(struct journal_s *journal, sector_t *block);  argument