ipc namespace: initialize init_ipc_ns.count to 1

Any objections to this patch?

From cfecafff4d4b1bb0f8fd49eb8e19384b34a7dc22 Mon Sep 17 00:00:00 2001
From: Serge E. Hallyn <serue-r/[email protected]>
Date: Mon, 2 Mar 2009 16:40:18 -0800
Subject: [PATCH 1/1] ipc namespace: initialize init_ipc_ns.count to 1

That's one count for the init task. Nothing else pins an ipc ns (i.e. not ipcns->mq_mnt). The only references to init_ipc_ns are the sysctl .data calculations, which should remain safe.

---
 ipc/msgutil.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

index e5d6da1..f095ee2 100644
@@ -26,8 +26,7 @@ DEFINE_SPINLOCK(mq_lock);
  * and not CONFIG_IPC_NS.
  */
 struct ipc_namespace init_ipc_ns = {
-	/* It's not for this patch to change, but should this be 1? */
-	.count		= ATOMIC_INIT(2),
+	.count		= ATOMIC_INIT(1),
 #ifdef CONFIG_POSIX_MQUEUE
 	.mq_queues_max   = DFLT_QUEUESMAX,
 	.mq_msg_max      = DFLT_MSGMAX,

1.5.4.3