Re: [PATCH net-next] net: fix sysctl_fb_tunnels_only_for_init_net link error

[David Miller]

From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Tue, 13 Mar 2018 12:44:53 +0100

> The new variable is only available when CONFIG_SYSCTL is enabled,
> otherwise we get a link error:
> 
> net/ipv4/ip_tunnel.o: In function `ip_tunnel_init_net':
> ip_tunnel.c:(.text+0x278b): undefined reference to `sysctl_fb_tunnels_only_for_init_net'
> net/ipv6/sit.o: In function `sit_init_net':
> sit.c:(.init.text+0x4c): undefined reference to `sysctl_fb_tunnels_only_for_init_net'
> net/ipv6/ip6_tunnel.o: In function `ip6_tnl_init_net':
> ip6_tunnel.c:(.init.text+0x39): undefined reference to `sysctl_fb_tunnels_only_for_init_net'
> 
> This adds an extra condition, keeping the traditional behavior when
> CONFIG_SYSCTL is disabled.
> 
> Fixes: 79134e6ce2c9 ("net: do not create fallback tunnels for non-default namespaces")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Applied, thank you.