VOP_FSYNC_FP
return (VOP_FSYNC_FP(ap->a_vp, ap->a_waitfor, ap->a_flags, ap->a_fp));
VOP_FSYNC_FP(vp, MNT_WAIT, VOP_FSYNC_SYSCALL, fp) :
VOP_FSYNC_FP(vp, waitfor, flags, NULL)