rwsem_acquire_read   22 kernel/rwsem.c 	rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);
rwsem_acquire_read   37 kernel/rwsem.c 		rwsem_acquire_read(&sem->dep_map, 0, 1, _RET_IP_);
rwsem_acquire_read  113 kernel/rwsem.c 	rwsem_acquire_read(&sem->dep_map, subclass, 0, _RET_IP_);