From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Horman Subject: [patch nf-next] IPVS: convert __ip_vs_securetcp_lock to a spinlock Date: Fri, 20 Aug 2010 23:52:08 +0900 Message-ID: <20100820145206.GA11781@verge.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Stephen Hemminger , Eric Dumazet , Changli Gao , yao zhao , Wensong Zhang , Julian Anastasov , Patrick McHardy To: lvs-devel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org Return-path: Received: from kirsty.vergenet.net ([202.4.237.240]:48265 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752540Ab0HTOwL (ORCPT ); Fri, 20 Aug 2010 10:52:11 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Also rename __ip_vs_securetcp_lock to ip_vs_securetcp_lock. Spinlock conversion was suggested by Eric Dumazet. Cc: Eric Dumazet Signed-off-by: Simon Horman --- Compile tested only Index: nf-next-2.6/net/netfilter/ipvs/ip_vs_ctl.c =================================================================== --- nf-next-2.6.orig/net/netfilter/ipvs/ip_vs_ctl.c 2010-08-20 22:41:52.000000000 +0900 +++ nf-next-2.6/net/netfilter/ipvs/ip_vs_ctl.c 2010-08-20 23:29:49.000000000 +0900 @@ -61,7 +61,7 @@ static DEFINE_RWLOCK(__ip_vs_svc_lock); static DEFINE_RWLOCK(__ip_vs_rs_lock); /* lock for state and timeout tables */ -static DEFINE_RWLOCK(__ip_vs_securetcp_lock); +static DEFINE_SPINLOCK(ip_vs_securetcp_lock); /* lock for drop entry handling */ static DEFINE_SPINLOCK(__ip_vs_dropentry_lock); @@ -204,7 +204,7 @@ static void update_defense_level(void) spin_unlock(&__ip_vs_droppacket_lock); /* secure_tcp */ - write_lock(&__ip_vs_securetcp_lock); + spin_lock(&ip_vs_securetcp_lock); switch (sysctl_ip_vs_secure_tcp) { case 0: if (old_secure_tcp >= 2) @@ -238,7 +238,7 @@ static void update_defense_level(void) old_secure_tcp = sysctl_ip_vs_secure_tcp; if (to_change >= 0) ip_vs_protocol_timeout_change(sysctl_ip_vs_secure_tcp>1); - write_unlock(&__ip_vs_securetcp_lock); + spin_unlock(&ip_vs_securetcp_lock); local_bh_enable(); }