AMF_NOTIMEOUT
mp->am_flags &= ~AMF_NOTIMEOUT;
if (!mp || (mp->am_flags & AMF_NOTIMEOUT))
mp->am_flags &= ~AMF_NOTIMEOUT;
mp->am_flags |= AMF_NOTIMEOUT;
mp->am_flags |= AMF_NOTIMEOUT;
mp->am_flags |= AMF_NOTIMEOUT;