From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:60796 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727629AbfKPQrq (ORCPT ); Sat, 16 Nov 2019 11:47:46 -0500 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xAGGl676113438 for ; Sat, 16 Nov 2019 11:47:44 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0b-001b2d01.pphosted.com with ESMTP id 2wae609fv2-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sat, 16 Nov 2019 11:47:44 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 16 Nov 2019 16:47:43 -0000 From: Karsten Graul Subject: [PATCH net-next 3/4] net/smc: use rcu_barrier() on module unload Date: Sat, 16 Nov 2019 17:47:31 +0100 In-Reply-To: <20191116164732.47059-1-kgraul@linux.ibm.com> References: <20191116164732.47059-1-kgraul@linux.ibm.com> Message-Id: <20191116164732.47059-4-kgraul@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, heiko.carstens@de.ibm.com, raspl@linux.ibm.com, ubraun@linux.ibm.com From: Ursula Braun Add rcu_barrier() to make sure no RCU readers or callbacks are pending when the module is unloaded. Signed-off-by: Ursula Braun Signed-off-by: Karsten Graul --- net/smc/af_smc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 42b7fb8ab22b..cde4dc0ed173 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -2111,6 +2112,7 @@ static void __exit smc_exit(void) proto_unregister(&smc_proto); smc_pnet_exit(); unregister_pernet_subsys(&smc_net_ops); + rcu_barrier(); } module_init(smc_init); -- 2.17.1