diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index ebbc02b..648dfeb 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -63,5 +63,18 @@
 extern struct list_head *seq_list_next(void *v, struct list_head *head,
 		loff_t *ppos);
 
+struct net;
+struct seq_net_private {
+	struct net *net;
+};
+
+int seq_open_net(struct inode *, struct file *,
+		 const struct seq_operations *, int);
+int seq_release_net(struct inode *, struct file *);
+static inline struct net *seq_file_net(struct seq_file *seq)
+{
+	return ((struct seq_net_private *)seq->private)->net;
+}
+
 #endif
 #endif