include/linux/jbd_common.h

   1 #ifndef _LINUX_JBD_STATE_H
   2 #define _LINUX_JBD_STATE_H
   3
   4 static inline struct buffer_head *jh2bh(struct journal_head *jh)
   5 {
   6         return jh->b_bh;
   7 }
   8
   9 static inline struct journal_head *bh2jh(struct buffer_head *bh)
  10 {
  11         return bh->b_private;
  12 }
  13
  14 static inline void jbd_lock_bh_state(struct buffer_head *bh)
  15 {
  16         bit_spin_lock(BH_State, &bh->b_state);
  17 }
  18
  19 static inline int jbd_trylock_bh_state(struct buffer_head *bh)
  20 {
  21         return bit_spin_trylock(BH_State, &bh->b_state);
  22 }
  23
  24 static inline int jbd_is_locked_bh_state(struct buffer_head *bh)
  25 {
  26         return bit_spin_is_locked(BH_State, &bh->b_state);
  27 }
  28
  29 static inline void jbd_unlock_bh_state(struct buffer_head *bh)
  30 {
  31         bit_spin_unlock(BH_State, &bh->b_state);
  32 }
  33
  34 static inline void jbd_lock_bh_journal_head(struct buffer_head *bh)
  35 {
  36         bit_spin_lock(BH_JournalHead, &bh->b_state);
  37 }
  38
  39 static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh)
  40 {
  41         bit_spin_unlock(BH_JournalHead, &bh->b_state);
  42 }
  43
  44 #endif