| #ifndef _LINUX_JBD_STATE_H |
| #define _LINUX_JBD_STATE_H |
| |
| #include <linux/bit_spinlock.h> |
| |
| static inline struct buffer_head *jh2bh(struct journal_head *jh) |
| { |
| return jh->b_bh; |
| } |
| |
| static inline struct journal_head *bh2jh(struct buffer_head *bh) |
| { |
| return bh->b_private; |
| } |
| |
| static inline void jbd_lock_bh_state(struct buffer_head *bh) |
| { |
| bit_spin_lock(BH_State, &bh->b_state); |
| } |
| |
| static inline int jbd_trylock_bh_state(struct buffer_head *bh) |
| { |
| return bit_spin_trylock(BH_State, &bh->b_state); |
| } |
| |
| static inline int jbd_is_locked_bh_state(struct buffer_head *bh) |
| { |
| return bit_spin_is_locked(BH_State, &bh->b_state); |
| } |
| |
| static inline void jbd_unlock_bh_state(struct buffer_head *bh) |
| { |
| bit_spin_unlock(BH_State, &bh->b_state); |
| } |
| |
| static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) |
| { |
| bit_spin_lock(BH_JournalHead, &bh->b_state); |
| } |
| |
| static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh) |
| { |
| bit_spin_unlock(BH_JournalHead, &bh->b_state); |
| } |
| |
| #endif |
