Lines Matching defs:lock
12 * Two-state lock - can be taken for add or block - both states are shared,
20 static inline void two_state_lock_init(two_state_lock_t *lock)
22 atomic_long_set(&lock->v, 0);
23 init_waitqueue_head(&lock->wait);
26 static inline void bch2_two_state_unlock(two_state_lock_t *lock, int s)
30 EBUG_ON(atomic_long_read(&lock->v) == 0);
32 if (atomic_long_sub_return_release(i, &lock->v) == 0)
33 wake_up_all(&lock->wait);
36 static inline bool bch2_two_state_trylock(two_state_lock_t *lock, int s)
39 long v = atomic_long_read(&lock->v), old;
46 } while ((v = atomic_long_cmpxchg_acquire(&lock->v,
53 static inline void bch2_two_state_lock(two_state_lock_t *lock, int s)
55 if (!bch2_two_state_trylock(lock, s))
56 __bch2_two_state_lock(lock, s);