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netns: move {inc,dec}_net_namespaces into #ifdef

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With the newly enforced limit on the number of namespaces,
we get a build warning if CONFIG_NETNS is disabled:

net/core/net_namespace.c:273:13: error: 'dec_net_namespaces' defined but not used [-Werror=unused-function]
net/core/net_namespace.c:268:24: error: 'inc_net_namespaces' defined but not used [-Werror=unused-function]

This moves the two added functions inside the #ifdef that guards
their callers.

Fixes: 703286608a ("netns: Add a limit on the number of net namespaces")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Arnd Bergmann 2016-09-23 18:06:12 +02:00 committed by Eric W. Biederman
parent 213b067ce3
commit 2ed6afdee7
1 changed files with 10 additions and 10 deletions
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20
net/core/net_namespace.c
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@ -266,16 +266,6 @@ struct net *get_net_ns_by_id(struct net *net, int id)
return peer;
}
static struct ucounts *inc_net_namespaces(struct user_namespace *ns)
{
return inc_ucount(ns, current_euid(), UCOUNT_NET_NAMESPACES);
}
static void dec_net_namespaces(struct ucounts *ucounts)
{
dec_ucount(ucounts, UCOUNT_NET_NAMESPACES);
}
/*
* setup_net runs the initializers for the network namespace object.
*/
@ -320,6 +310,16 @@ static __net_init int setup_net(struct net *net, struct user_namespace *user_ns)
#ifdef CONFIG_NET_NS
static struct ucounts *inc_net_namespaces(struct user_namespace *ns)
{
return inc_ucount(ns, current_euid(), UCOUNT_NET_NAMESPACES);
}
static void dec_net_namespaces(struct ucounts *ucounts)
{
dec_ucount(ucounts, UCOUNT_NET_NAMESPACES);
}
static struct kmem_cache *net_cachep;
static struct workqueue_struct *netns_wq;