__down_read_trylock 64 include/linux/rwsem-spinlock.h extern int __down_read_trylock(struct rw_semaphore *sem); __down_read_trylock 24 kernel/rwsem.c LOCK_CONTENDED(sem, __down_read_trylock, __down_read); __down_read_trylock 34 kernel/rwsem.c int ret = __down_read_trylock(sem); __down_read_trylock 115 kernel/rwsem.c LOCK_CONTENDED(sem, __down_read_trylock, __down_read);