[NET]: Consolidate net namespace related proc files creation.

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

1 files changed, 4 insertions, 22 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 45e3cbcb2763..ace29f1c4c5b 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1871,7 +1871,7 @@ static inline struct sock *packet_seq_idx(struct net *net, loff_t off)
 
 static void *packet_seq_start(struct seq_file *seq, loff_t *pos)
 {
-        struct net *net = seq->private;
+        struct net *net = seq_file_net(seq);
         read_lock(&net->packet_sklist_lock);
         return *pos ? packet_seq_idx(net, *pos - 1) : SEQ_START_TOKEN;
 }
@@ -1924,26 +1924,8 @@ static const struct seq_operations packet_seq_ops = {
 
 static int packet_seq_open(struct inode *inode, struct file *file)
 {
-        struct seq_file *seq;
-        int res;
-        res = seq_open(file, &packet_seq_ops);
-        if (!res) {
-                seq = file->private_data;
-                seq->private = get_proc_net(inode);
-                if (!seq->private) {
-                        seq_release(inode, file);
-                        res = -ENXIO;
-                }
-        }
-        return res;
-}
-
-static int packet_seq_release(struct inode *inode, struct file *file)
-{
-        struct seq_file *seq=  file->private_data;
-        struct net *net = seq->private;
-        put_net(net);
-        return seq_release(inode, file);
+        return seq_open_net(inode, file, &packet_seq_ops,
+                            sizeof(struct seq_net_private));
 }
 
 static const struct file_operations packet_seq_fops = {
@@ -1951,7 +1933,7 @@ static const struct file_operations packet_seq_fops = {
         .open           = packet_seq_open,
         .read           = seq_read,
         .llseek         = seq_lseek,
-        .release        = packet_seq_release,
+        .release        = seq_release_net,
 };
 
 #endif