| 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 | |
| Paul Gortmaker | c9b3a8c | 2013-06-12 23:02:35 -0400 | [diff] [blame] | 4 | #include <linux/bit_spinlock.h> |
| 5 | |
| Thomas Gleixner | 4460667 | 2011-10-27 04:38:18 -0400 | [diff] [blame] | 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 |