linux-kernel - [PATCH 03/30] ipcns: remove useless get/put while CLONE

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Message-ID: <20090410023335.GD27788@x200.localdomain>
Date:	Fri, 10 Apr 2009 06:33:35 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	akpm@...ux-foundation.org, containers@...ts.linux-foundation.org
Cc:	xemul@...allels.com, serue@...ibm.com, dave@...ux.vnet.ibm.com,
	mingo@...e.hu, orenl@...columbia.edu, hch@...radead.org,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH 03/30] ipcns: remove useless get/put while CLONE_NEWIPC

copy_ipcs() doesn't actually copy anything. If new ipcns is created,
it's created from scratch, in this case get/put on old ipcns isn't needed.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 ipc/namespace.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -50,15 +50,11 @@ struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns)
 {
 	struct ipc_namespace *new_ns;
 
-	BUG_ON(!ns);
-	get_ipc_ns(ns);
-
 	if (!(flags & CLONE_NEWIPC))
-		return ns;
+		return get_ipc_ns(ns);
 
 	new_ns = clone_ipc_ns(ns);
 
-	put_ipc_ns(ns);
 	return new_ns;
 }
 
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