From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Emelyanov Subject: [PATCH][INET 1/2]: Drop the inet_inherit_port() call. Date: Thu, 17 Apr 2008 19:59:38 +0400 Message-ID: <480773EA.2000302@openvz.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Linux Netdev List , Arnaldo Carvalho de Melo To: David Miller Return-path: Received: from sacred.ru ([62.205.161.221]:43983 "EHLO sacred.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751910AbYDQQBo (ORCPT ); Thu, 17 Apr 2008 12:01:44 -0400 Sender: netdev-owner@vger.kernel.org List-ID: As I can see from the code, two places (tcp_v6_syn_recv_sock and dccp_v6_request_recv_sock) that call this one already run with BHs disabled, so it's safe to call __inet_inherit_port there. Besides (in case I missed smth with code review) the calltrace tcp_v6_syn_recv_sock `- tcp_v4_syn_recv_sock `- __inet_inherit_port and the similar for DCCP are valid, but assumes BHs to be disabled. Signed-off-by: Pavel Emelyanov --- include/net/inet_hashtables.h | 7 ------- net/dccp/ipv6.c | 2 +- net/ipv6/tcp_ipv6.c | 2 +- 3 files changed, 2 insertions(+), 9 deletions(-) diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h index 5525227..5ec91d8 100644 --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -235,13 +235,6 @@ static inline void __inet_inherit_port(struct sock *sk, struct sock *child) spin_unlock(&head->lock); } -static inline void inet_inherit_port(struct sock *sk, struct sock *child) -{ - local_bh_disable(); - __inet_inherit_port(sk, child); - local_bh_enable(); -} - extern void inet_put_port(struct sock *sk); extern void inet_listen_wlock(struct inet_hashinfo *hashinfo); diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index f8371c7..9b1129b 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -625,7 +625,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk, newinet->daddr = newinet->saddr = newinet->rcv_saddr = LOOPBACK4_IPV6; __inet6_hash(newsk); - inet_inherit_port(sk, newsk); + __inet_inherit_port(sk, newsk); return newsk; diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 231c4dd..715965f 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1534,7 +1534,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb, #endif __inet6_hash(newsk); - inet_inherit_port(sk, newsk); + __inet_inherit_port(sk, newsk); return newsk; -- 1.5.3.4