linux-kernel - [PATCH 08/13] net: appletalk: use seq_hlist

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Message-ID: <4B7128CF.7040903@cn.fujitsu.com>
Date:	Tue, 09 Feb 2010 17:20:15 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	David Miller <davem@...emloft.net>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH 08/13] net: appletalk: use seq_hlist_foo() helpers

Simplify seq_file code.

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 net/appletalk/atalk_proc.c |   30 +++---------------------------
 1 files changed, 3 insertions(+), 27 deletions(-)

diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index 80caad1..6ef0e76 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -144,40 +144,16 @@ out:
 	return 0;
 }
 
-static __inline__ struct sock *atalk_get_socket_idx(loff_t pos)
-{
-	struct sock *s;
-	struct hlist_node *node;
-
-	sk_for_each(s, node, &atalk_sockets)
-		if (!pos--)
-			goto found;
-	s = NULL;
-found:
-	return s;
-}
-
 static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
 	__acquires(atalk_sockets_lock)
 {
-	loff_t l = *pos;
-
 	read_lock_bh(&atalk_sockets_lock);
-	return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN;
+	return seq_hlist_start_head(&atalk_sockets, *pos);
 }
 
 static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-	struct sock *i;
-
-	++*pos;
-	if (v == SEQ_START_TOKEN) {
-		i = sk_head(&atalk_sockets);
-		goto out;
-	}
-	i = sk_next(v);
-out:
-	return i;
+	return seq_hlist_next(v, &atalk_sockets, pos);
 }
 
 static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
@@ -197,7 +173,7 @@ static int atalk_seq_socket_show(struct seq_file *seq, void *v)
 		goto out;
 	}
 
-	s = v;
+	s = sk_entry(v);
 	at = at_sk(s);
 
 	seq_printf(seq, "%02X   %04X:%02X:%02X  %04X:%02X:%02X  %08X:%08X "
-- 
1.6.3

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