TUN_FASYNC 1113 drivers/net/tun.c if (tfile->flags & TUN_FASYNC) TUN_FASYNC 1276 drivers/net/tun.c if (tfile->flags & TUN_FASYNC) TUN_FASYNC 3410 drivers/net/tun.c tfile->flags |= TUN_FASYNC; TUN_FASYNC 3412 drivers/net/tun.c tfile->flags &= ~TUN_FASYNC;