website-struct

Struct: journal_s

Status

Regular

• In 4.4: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 4.8: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 4.10: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 4.13: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 4.15: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 4.18: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 5.0: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 5.3: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 5.4: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 5.8: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In 5.11: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
  };
  

• In 5.13: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
  };
  

• In 5.15: ✅

  struct journal_s {
      long unsigned int j_flags;
      long unsigned int j_atomic_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      struct shrinker j_shrinker;
      struct percpu_counter j_checkpoint_jh_count;
      transaction_t *j_shrink_transaction;
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int, tid_t);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
  };
  

• In 5.19: ✅

  struct journal_s {
      long unsigned int j_flags;
      long unsigned int j_atomic_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      struct shrinker j_shrinker;
      struct percpu_counter j_checkpoint_jh_count;
      transaction_t *j_shrink_transaction;
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int, tid_t);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
  };
  

• In 6.2: ✅

  struct journal_s {
      long unsigned int j_flags;
      long unsigned int j_atomic_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      struct shrinker j_shrinker;
      struct percpu_counter j_checkpoint_jh_count;
      transaction_t *j_shrink_transaction;
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int, tid_t);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
  };
  

• In 6.5: ✅

  struct journal_s {
      long unsigned int j_flags;
      long unsigned int j_atomic_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      struct shrinker j_shrinker;
      struct percpu_counter j_checkpoint_jh_count;
      transaction_t *j_shrink_transaction;
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int, tid_t);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
      int (*j_bmap)(struct journal_s *, sector_t *);
  };
  

• In 6.8: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct mutex j_abort_mutex;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      wait_queue_head_t j_fc_wait;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      struct shrinker *j_shrinker;
      struct percpu_counter j_checkpoint_jh_count;
      transaction_t *j_shrink_transaction;
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      long unsigned int j_fc_first;
      long unsigned int j_fc_off;
      long unsigned int j_fc_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      errseq_t j_fs_dev_wb_err;
      unsigned int j_total_len;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      int j_revoke_records_per_block;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      struct buffer_head **j_fc_wbuf;
      int j_wbufsize;
      int j_fc_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      int (*j_submit_inode_data_buffers)(struct jbd2_inode *);
      int (*j_finish_inode_data_buffers)(struct jbd2_inode *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
      void (*j_fc_cleanup_callback)(struct journal_s *, int, tid_t);
      int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t);
      int (*j_bmap)(struct journal_s *, sector_t *);
  };
  

Arch

• In arm64: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In armhf: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In ppc64el: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In riscv64: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

Flavor

• In aws: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In azure: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In gcp: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

• In lowlatency: ✅

  struct journal_s {
      long unsigned int j_flags;
      int j_errno;
      struct buffer_head *j_sb_buffer;
      journal_superblock_t *j_superblock;
      int j_format_version;
      rwlock_t j_state_lock;
      int j_barrier_count;
      struct mutex j_barrier;
      transaction_t *j_running_transaction;
      transaction_t *j_committing_transaction;
      transaction_t *j_checkpoint_transactions;
      wait_queue_head_t j_wait_transaction_locked;
      wait_queue_head_t j_wait_done_commit;
      wait_queue_head_t j_wait_commit;
      wait_queue_head_t j_wait_updates;
      wait_queue_head_t j_wait_reserved;
      struct mutex j_checkpoint_mutex;
      struct buffer_head * j_chkpt_bhs[64];
      long unsigned int j_head;
      long unsigned int j_tail;
      long unsigned int j_free;
      long unsigned int j_first;
      long unsigned int j_last;
      struct block_device *j_dev;
      int j_blocksize;
      long long unsigned int j_blk_offset;
      char j_devname[56];
      struct block_device *j_fs_dev;
      unsigned int j_maxlen;
      atomic_t j_reserved_credits;
      spinlock_t j_list_lock;
      struct inode *j_inode;
      tid_t j_tail_sequence;
      tid_t j_transaction_sequence;
      tid_t j_commit_sequence;
      tid_t j_commit_request;
      __u8 j_uuid[16];
      struct task_struct *j_task;
      int j_max_transaction_buffers;
      long unsigned int j_commit_interval;
      struct timer_list j_commit_timer;
      spinlock_t j_revoke_lock;
      struct jbd2_revoke_table_s *j_revoke;
      struct jbd2_revoke_table_s * j_revoke_table[2];
      struct buffer_head **j_wbuf;
      int j_wbufsize;
      pid_t j_last_sync_writer;
      u64 j_average_commit_time;
      u32 j_min_batch_time;
      u32 j_max_batch_time;
      void (*j_commit_callback)(journal_t *, transaction_t *);
      spinlock_t j_history_lock;
      struct proc_dir_entry *j_proc_entry;
      struct transaction_stats_s j_stats;
      unsigned int j_failed_commit;
      void *j_private;
      struct crypto_shash *j_chksum_driver;
      __u32 j_csum_seed;
  };
  

Differences

Regular

• No changes between 4.4 and 4.8 ✅
• No changes between 4.8 and 4.10 ✅
• No changes between 4.10 and 4.13 ✅
• No changes between 4.13 and 4.15 ✅
• No changes between 4.15 and 4.18 ✅
• No changes between 4.18 and 5.0 ✅
• No changes between 5.0 and 5.3 ✅
• No changes between 5.3 and 5.4 ✅
• Changed between 5.4 and 5.8 ⚠️

  • Field added. struct mutex j_abort_mutex
  • Field added. int j_revoke_records_per_block
• Changed between 5.8 and 5.11 ⚠️

  • Field added. wait_queue_head_t j_fc_wait
  • Field added. long unsigned int j_fc_first
  • Field added. long unsigned int j_fc_off
  • Field added. long unsigned int j_fc_last
  • Field added. unsigned int j_total_len
  • Field added. struct buffer_head **j_fc_wbuf
  • Field added. int j_fc_wbufsize
  • Field added. int (*j_submit_inode_data_buffers)(struct jbd2_inode *)
  • Field added. int (*j_finish_inode_data_buffers)(struct jbd2_inode *)
  • Field added. void (*j_fc_cleanup_callback)(struct journal_s *, int)
  • Field added. int (*j_fc_replay_callback)(struct journal_s *, struct buffer_head *, enum passtype, int, tid_t)
  • Field removed. unsigned int j_maxlen
• No changes between 5.11 and 5.13 ✅
• Changed between 5.13 and 5.15 ⚠️

  • Field added. long unsigned int j_atomic_flags
  • Field added. struct shrinker j_shrinker
  • Field added. struct percpu_counter j_checkpoint_jh_count
  • Field added. transaction_t *j_shrink_transaction
  • Field type changed. void (*j_fc_cleanup_callback)(struct journal_s *, int) ➡️ void (*j_fc_cleanup_callback)(struct journal_s *, int, tid_t)
• No changes between 5.15 and 5.19 ✅
• No changes between 5.19 and 6.2 ✅
• Changed between 6.2 and 6.5 ⚠️

  • Field added. int (*j_bmap)(struct journal_s *, sector_t *)
  • Field removed. int j_format_version
• Changed between 6.5 and 6.8 ⚠️

  • Field added. errseq_t j_fs_dev_wb_err
  • Field removed. long unsigned int j_atomic_flags
  • Field type changed. struct shrinker j_shrinker ➡️ struct shrinker *j_shrinker

Arch

• No changes between amd64 and arm64 ✅
• No changes between amd64 and armhf ✅
• No changes between amd64 and ppc64el ✅
• No changes between amd64 and riscv64 ✅

Flavor

• No changes between generic and aws ✅
• No changes between generic and azure ✅
• No changes between generic and gcp ✅
• No changes between generic and lowlatency ✅