[NETNS]: Compile NET /proc support only if CONFIG_NET is set.

This fix broken compilation for 'allnoconfig'. This was introduced by
Introduced by commit 1218854afa6f659be90b748cf1bc7badee954a35 ("[NET]
NETNS: Omit seq_net_private->net without CONFIG_NET_NS.")

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index d870a8253769..5da70c3f4417 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -63,6 +63,7 @@ extern struct list_head *seq_list_start_head(struct list_head *head,
 extern struct list_head *seq_list_next(void *v, struct list_head *head,
                 loff_t *ppos);
 
+#ifdef CONFIG_NET
 struct net;
 struct seq_net_private {
 #ifdef CONFIG_NET_NS
@@ -81,6 +82,7 @@ static inline struct net *seq_file_net(struct seq_file *seq)
         return &init_net;
 #endif
 }
+#endif  /* CONFIG_NET */
 
 #endif
 #endif