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SubjectRe: [PATCH] netns: move {inc,dec}_net_namespaces into #ifdef
Arnd Bergmann <arnd@arndb.de> writes:

> 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: 703286608a22 ("netns: Add a limit on the number of net namespaces")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Applied to my namespace tree thanks.

This was a hold over from calling those functions in a different location.

Eric

> ---
> net/core/net_namespace.c | 20 ++++++++++----------
> 1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
> index d0eb13d3226b..989434f36f96 100644
> --- a/net/core/net_namespace.c
> +++ b/net/core/net_namespace.c
> @@ -265,16 +265,6 @@ 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.
> */
> @@ -319,6 +309,16 @@ 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;

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