Function shm_dotruncate_cookie

freebsd/kern/uipc_shm.c:823–834

}

static int
shm_dotruncate_cookie(struct shmfd *shmfd, off_t length, void *rl_cookie)
{
	int error;

	VM_OBJECT_WLOCK(shmfd->shm_object);
	error = shm_largepage(shmfd) ? shm_dotruncate_largepage(shmfd,
	    length, rl_cookie) : shm_dotruncate_locked(shmfd, length,
	    rl_cookie);
	VM_OBJECT_WUNLOCK(shmfd->shm_object);
	return (error);
}

int
shm_dotruncate(struct shmfd *shmfd, off_t length)