/* Scale msgmni with the available lowmem size: the memory dedicated to msg queues should occupy at most 1/MSG_MEM_SCALE of lowmem. Also take into account the number of nsproxies created so far. This should be done staying within the (MSGMNI , IPCMNI/nr_ipc_ns) range.  */
void recompute_msgmni(struct ipc_namespace *ns)
/* Scale msgmni with the available lowmem size: the memory dedicated to msg queues should occupy at most 1/MSG_MEM_SCALE of lowmem. Also take into account the number of nsproxies created so far. This should be done staying within the (MSGMNI , IPCMNI/nr_ipc_ns) range.  */
void recompute_msgmni(struct ipc_namespace *ns)
{
	struct sysinfo i;
	unsigned long allowed;
	int nb_ns;
	si_meminfo(&i);
	allowed = (((i.totalram - i.totalhigh) / MSG_MEM_SCALE) * i.mem_unit)
		/ MSGMNB;
	nb_ns = atomic_read(&nr_ipc_ns);
	allowed /= nb_ns;
	if (allowed < MSGMNI) {
		ns->msg_ctlmni = MSGMNI;
		return;
	}
	if (allowed > IPCMNI / nb_ns) {
		ns->msg_ctlmni = IPCMNI / nb_ns;
		return;
	}
	ns->msg_ctlmni = allowed;
}