67 static inline int arch_read_trylock(arch_rwlock_t *rw)  in arch_read_trylock()  argument
73 	arch_spin_lock(&(rw->lock_mutex));  in arch_read_trylock()
79 	if (rw->counter > 0) {  in arch_read_trylock()
80 		rw->counter--;  in arch_read_trylock()
84 	arch_spin_unlock(&(rw->lock_mutex));  in arch_read_trylock()
91 static inline int arch_write_trylock(arch_rwlock_t *rw)  in arch_write_trylock()  argument
97 	arch_spin_lock(&(rw->lock_mutex));  in arch_write_trylock()
105 	if (rw->counter == __ARCH_RW_LOCK_UNLOCKED__) {  in arch_write_trylock()
106 		rw->counter = 0;  in arch_write_trylock()
109 	arch_spin_unlock(&(rw->lock_mutex));  in arch_write_trylock()
115 static inline void arch_read_lock(arch_rwlock_t *rw)  in arch_read_lock()  argument
117 	while (!arch_read_trylock(rw))  in arch_read_lock()
121 static inline void arch_write_lock(arch_rwlock_t *rw)  in arch_write_lock()  argument
123 	while (!arch_write_trylock(rw))  in arch_write_lock()
127 static inline void arch_read_unlock(arch_rwlock_t *rw)  in arch_read_unlock()  argument
132 	arch_spin_lock(&(rw->lock_mutex));  in arch_read_unlock()
133 	rw->counter++;  in arch_read_unlock()
134 	arch_spin_unlock(&(rw->lock_mutex));  in arch_read_unlock()
138 static inline void arch_write_unlock(arch_rwlock_t *rw)  in arch_write_unlock()  argument
143 	arch_spin_lock(&(rw->lock_mutex));  in arch_write_unlock()
144 	rw->counter = __ARCH_RW_LOCK_UNLOCKED__;  in arch_write_unlock()
145 	arch_spin_unlock(&(rw->lock_mutex));  in arch_write_unlock()