linux-kernel - [PATCH 09/38] netns 1/2: don't get/put old netns on CLONE

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Date:	Fri, 22 May 2009 08:55:03 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	torvalds@...ux-foundation.org, xemul@...allels.com,
	orenl@...columbia.edu, serue@...ibm.com, dave@...ux.vnet.ibm.com,
	mingo@...e.hu, Alexey Dobriyan <adobriyan@...il.com>
Subject: [PATCH 09/38] netns 1/2: don't get/put old netns on CLONE_NEWNET

copy_net_ns() doesn't copy anything, it creates fresh netns, so get/put of old
netns isn't needed.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
Acked-by: Serge Hallyn <serue@...ibm.com>
---
 net/core/net_namespace.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index e3bebd3..4488010 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -120,10 +120,8 @@ struct net *copy_net_ns(unsigned long flags, struct net *old_net)
 	struct net *new_net = NULL;
 	int err;
 
-	get_net(old_net);
-
 	if (!(flags & CLONE_NEWNET))
-		return old_net;
+		return get_net(old_net);
 
 	err = -ENOMEM;
 	new_net = net_alloc();
@@ -142,7 +140,6 @@ struct net *copy_net_ns(unsigned long flags, struct net *old_net)
 	if (err)
 		goto out_free;
 out:
-	put_net(old_net);
 	return new_net;
 
 out_free:
-- 
1.5.6.5

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