[NET]: Make core networking code use seq_open_private
This concerns the ipv4 and ipv6 code mostly, but also the netlink
and unix sockets.
The netlink code is an example of how to use the __seq_open_private()
call - it saves the net namespace on this private.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index d824819..36d6798 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1378,24 +1378,8 @@
static int arp_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct neigh_seq_state *s = kzalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &arp_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_private(file, &arp_seq_ops,
+ sizeof(struct neigh_seq_state));
}
static const struct file_operations arp_seq_fops = {