diff options
Diffstat (limited to 'ipc/msg.c')
| -rw-r--r-- | ipc/msg.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 9e7211122e2..be8449d48a8 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -81,24 +81,28 @@ static int sysvipc_msg_proc_show(struct seq_file *s, void *it); /* * Scale msgmni with the available lowmem size: the memory dedicated to msg * queues should occupy at most 1/MSG_MEM_SCALE of lowmem. - * This should be done staying within the (MSGMNI , IPCMNI) range. + * Also take into account the number of nsproxies created so far. + * This should be done staying within the (MSGMNI , IPCMNI/nr_ipc_ns) range. */ static 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; goto out_callback; } - if (allowed > IPCMNI) { - ns->msg_ctlmni = IPCMNI; + if (allowed > IPCMNI / nb_ns) { + ns->msg_ctlmni = IPCMNI / nb_ns; goto out_callback; } |