Symbol: M_SOLOCKED
sys/kern/uipc_sockbuf.c
376
if (tailm && !(tailm->m_flags & (M_EOR | M_SOLOCKED)) &&
sys/kern/uipc_socket.c
1747
n->m_flags |= M_SOLOCKED;
sys/kern/uipc_socket.c
1778
while (m && (m->m_flags & M_SOLOCKED) && resid > 0 && error == 0) {