From 4d89dc6ab2711258bfd12c72d753f3ad56b244e2 Mon Sep 17 00:00:00 2001
From: Nadia Derbey <Nadia.Derbey@bull.net>
Date: Tue, 29 Apr 2008 01:00:40 -0700
Subject: ipc: scale msgmni to the number of ipc namespaces

Since all the namespaces see the same amount of memory (the total one) this
patch introduces a new variable that counts the ipc namespaces and divides
msg_ctlmni by this counter.

Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: Mingming Cao <cmm@us.ibm.com>
Cc: Pierre Peiffer <pierre.peiffer@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/ipc_namespace.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux/ipc_namespace.h')

diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index e4451d1da753..878d7ac286fa 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -33,6 +33,7 @@ struct ipc_namespace {
 };
 
 extern struct ipc_namespace init_ipc_ns;
+extern atomic_t nr_ipc_ns;
 
 #ifdef CONFIG_SYSVIPC
 #define INIT_IPC_NS(ns)		.ns		= &init_ipc_ns,
-- 
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