| Thomas Gleixner | 4460667 | 2011-10-27 04:38:18 -0400 | [diff] [blame] | 1 | #ifndef _LINUX_JBD_STATE_H |
| 2 | #define _LINUX_JBD_STATE_H |
| 3 | |
| Thomas Gleixner | 4460667 | 2011-10-27 04:38:18 -0400 | [diff] [blame] | 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 |