projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 44606672 TG |
1 | #ifndef _LINUX_JBD_STATE_H |
| 2 | #define _LINUX_JBD_STATE_H | |
| 3 | ||
| c9b3a8cc PG |
4 | #include <linux/bit_spinlock.h> |
| 5 | ||
| 44606672 TG |
6 | static inline struct buffer_head *jh2bh(struct journal_head *jh) |
| 7 | { | |
| 8 | return jh->b_bh; | |
| 9 | } | |
| 10 | ||
| 11 | static inline struct journal_head *bh2jh(struct buffer_head *bh) | |
| 12 | { | |
| 13 | return bh->b_private; | |
| 14 | } | |
| 15 | ||
| 16 | static inline void jbd_lock_bh_state(struct buffer_head *bh) | |
| 17 | { | |
| 18 | bit_spin_lock(BH_State, &bh->b_state); | |
| 19 | } | |
| 20 | ||
| 21 | static inline int jbd_trylock_bh_state(struct buffer_head *bh) | |
| 22 | { | |
| 23 | return bit_spin_trylock(BH_State, &bh->b_state); | |
| 24 | } | |
| 25 | ||
| 26 | static 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 | ||
| 31 | static inline void jbd_unlock_bh_state(struct buffer_head *bh) | |
| 32 | { | |
| 33 | bit_spin_unlock(BH_State, &bh->b_state); | |
| 34 | } | |
| 35 | ||
| 36 | static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) | |
| 37 | { | |
| 38 | bit_spin_lock(BH_JournalHead, &bh->b_state); | |
| 39 | } | |
| 40 | ||
| 41 | static 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 |