linux-kernel - [PATCH 9/12] ipv4: assign PDE->data before gluing PDE into /proc tree

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Date:	Tue, 29 Apr 2008 15:13:19 +0400
From:	"Denis V. Lunev" <den@...nvz.org>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, "Denis V. Lunev" <den@...nvz.org>,
	Alexey Dobriyan <adobriyan@...nvz.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 9/12] ipv4: assign PDE->data before gluing PDE into /proc tree

The check for PDE->data != NULL becomes useless after the replacement
of proc_net_fops_create with proc_create_data.

Signed-off-by: Denis V. Lunev <den@...nvz.org>
Cc: Alexey Dobriyan <adobriyan@...nvz.org>
Cc: Eric W. Biederman <ebiederm@...ssion.com>
Cc: David S. Miller <davem@...emloft.net>
---
 net/ipv4/tcp_ipv4.c |   10 +++-------
 net/ipv4/udp.c      |    7 +++----
 2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 7766151..4d97b28 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2214,9 +2214,6 @@ static int tcp_seq_open(struct inode *inode, struct file *file)
 	struct tcp_iter_state *s;
 	int err;
 
-	if (unlikely(afinfo == NULL))
-		return -EINVAL;
-
 	err = seq_open_net(inode, file, &afinfo->seq_ops,
 			  sizeof(struct tcp_iter_state));
 	if (err < 0)
@@ -2241,10 +2238,9 @@ int tcp_proc_register(struct net *net, struct tcp_seq_afinfo *afinfo)
 	afinfo->seq_ops.next		= tcp_seq_next;
 	afinfo->seq_ops.stop		= tcp_seq_stop;
 
-	p = proc_net_fops_create(net, afinfo->name, S_IRUGO, &afinfo->seq_fops);
-	if (p)
-		p->data = afinfo;
-	else
+	p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
+			     &afinfo->seq_fops, afinfo);
+	if (!p)
 		rc = -ENOMEM;
 	return rc;
 }
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index b053ac7..c19c491 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1605,10 +1605,9 @@ int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo)
 	afinfo->seq_ops.next		= udp_seq_next;
 	afinfo->seq_ops.stop		= udp_seq_stop;
 
-	p = proc_net_fops_create(net, afinfo->name, S_IRUGO, &afinfo->seq_fops);
-	if (p)
-		p->data = afinfo;
-	else
+	p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
+			     &afinfo->seq_fops, afinfo);
+	if (!p)
 		rc = -ENOMEM;
 	return rc;
 }
-- 
1.5.3.rc5

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