proc: consolidate per-net single_open callers

There are already 7 of them - time to kill some duplicate code.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 42 deletions

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index cbc7e514d3ec..29c5a79444c2 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -183,24 +183,7 @@ static int snmp6_seq_show(struct seq_file *seq, void *v)
 
 static int sockstat6_seq_open(struct inode *inode, struct file *file)
 {
-	int err;
-	struct net *net;
-
-	err = -ENXIO;
-	net = get_proc_net(inode);
-	if (net == NULL)
-		goto err_net;
-
-	err = single_open(file, sockstat6_seq_show, net);
-	if (err < 0)
-		goto err_open;
-
-	return 0;
-
-err_open:
-	put_net(net);
-err_net:
-	return err;
+	return single_open_net(inode, file, sockstat6_seq_show);
 }
 
 static int sockstat6_seq_release(struct inode *inode, struct file *file)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 5d6c166dfbb6..fb7ff8f0c6db 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2416,18 +2416,7 @@ static int ipv6_route_show(struct seq_file *m, void *v)
 
 static int ipv6_route_open(struct inode *inode, struct file *file)
 {
-	int err;
-	struct net *net = get_proc_net(inode);
-	if (!net)
-		return -ENXIO;
-
-	err = single_open(file, ipv6_route_show, net);
-	if (err < 0) {
-		put_net(net);
-		return err;
-	}
-
-	return 0;
+	return single_open_net(inode, file, ipv6_route_show);
 }
 
 static int ipv6_route_release(struct inode *inode, struct file *file)
@@ -2463,18 +2452,7 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v)
 
 static int rt6_stats_seq_open(struct inode *inode, struct file *file)
 {
-	int err;
-	struct net *net = get_proc_net(inode);
-	if (!net)
-		return -ENXIO;
-
-	err = single_open(file, rt6_stats_seq_show, net);
-	if (err < 0) {
-		put_net(net);
-		return err;
-	}
-
-	return 0;
+	return single_open_net(inode, file, rt6_stats_seq_show);
 }
 
 static int rt6_stats_seq_release(struct inode *inode, struct file *file)