1#ifndef _LINUX_JBD_STATE_H
2#define _LINUX_JBD_STATE_H
3
4#include <linux/bit_spinlock.h>
5
6static inline struct buffer_head *jh2bh(struct journal_head *jh)
7{
8	return jh->b_bh;
9}
10
11static inline struct journal_head *bh2jh(struct buffer_head *bh)
12{
13	return bh->b_private;
14}
15
16static inline void jbd_lock_bh_state(struct buffer_head *bh)
17{
18	bit_spin_lock(BH_State, &bh->b_state);
19}
20
21static inline int jbd_trylock_bh_state(struct buffer_head *bh)
22{
23	return bit_spin_trylock(BH_State, &bh->b_state);
24}
25
26static inline int jbd_is_locked_bh_state(struct buffer_head *bh)
27{
28	return bit_spin_is_locked(BH_State, &bh->b_state);
29}
30
31static inline void jbd_unlock_bh_state(struct buffer_head *bh)
32{
33	bit_spin_unlock(BH_State, &bh->b_state);
34}
35
36static inline void jbd_lock_bh_journal_head(struct buffer_head *bh)
37{
38	bit_spin_lock(BH_JournalHead, &bh->b_state);
39}
40
41static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh)
42{
43	bit_spin_unlock(BH_JournalHead, &bh->b_state);
44}
45
46#endif
47