proc: introduce proc_create_net{,_data}

Variants of proc_create{,_data} that directly take a struct seq_operations
and deal with network namespaces in ->open and ->release.  All callers of
proc_create + seq_open_net converted over, and seq_{open,release}_net are
removed entirely.

Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 2 insertions, 15 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 645f259d0972..2c970626b398 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2350,27 +2350,14 @@ static const struct seq_operations tcp4_seq_ops = {
 	.stop		= tcp_seq_stop,
 };
 
-static int tcp_seq_open(struct inode *inode, struct file *file)
-{
-	return seq_open_net(inode, file, &tcp4_seq_ops,
-			  sizeof(struct tcp_iter_state));
-}
-
-static const struct file_operations tcp_afinfo_seq_fops = {
-	.open    = tcp_seq_open,
-	.read    = seq_read,
-	.llseek  = seq_lseek,
-	.release = seq_release_net
-};
-
 static struct tcp_seq_afinfo tcp4_seq_afinfo = {
 	.family		= AF_INET,
 };
 
 static int __net_init tcp4_proc_init_net(struct net *net)
 {
-	if (!proc_create_data("tcp", 0444, net->proc_net,
-			&tcp_afinfo_seq_fops, &tcp4_seq_afinfo))
+	if (!proc_create_net_data("tcp", 0444, net->proc_net, &tcp4_seq_ops,
+			sizeof(struct tcp_iter_state), &tcp4_seq_afinfo))
 		return -ENOMEM;
 	return 0;
 }