case LINUX_BLKSSZGET:

		error = fo_ioctl(fp, DIOCGSECTORSIZE,

		    (caddr_t)&sectorsize, td->td_ucred, td);

		fdrop(fp, td);

		if (error)

			return (error);

		return (copyout(&sectorsize, (void *)args->arg,

		    sizeof(sectorsize)));

		break;