[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>

1 files changed, 1 insertions, 19 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 10e73122c34c..2b57eaf66abc 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2086,25 +2086,7 @@ static const struct seq_operations unix_seq_ops = {
 
 static int unix_seq_open(struct inode *inode, struct file *file)
 {
-        struct seq_file *seq;
-        int rc = -ENOMEM;
-        int *iter = kmalloc(sizeof(int), GFP_KERNEL);
-
-        if (!iter)
-                goto out;
-
-        rc = seq_open(file, &unix_seq_ops);
-        if (rc)
-                goto out_kfree;
-
-        seq          = file->private_data;
-        seq->private = iter;
-        *iter = 0;
-out:
-        return rc;
-out_kfree:
-        kfree(iter);
-        goto out;
+        return seq_open_private(file, &unix_seq_ops, sizeof(int));
 }
 
 static const struct file_operations unix_seq_fops = {