netdev - [PATCH net-next 5/7] net/smc: check connections in smc_lgr_free

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Message-Id: <20190212152956.71041-6-ubraun@linux.ibm.com>
Date:   Tue, 12 Feb 2019 16:29:54 +0100
From:   Ursula Braun <ubraun@...ux.ibm.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, linux-s390@...r.kernel.org,
        schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
        raspl@...ux.ibm.com, ubraun@...ux.ibm.com
Subject: [PATCH net-next 5/7] net/smc: check connections in smc_lgr_free_work

From: Karsten Graul <kgraul@...ux.ibm.com>

Remove the shortcut that smc_lgr_free() would skip the check for
existing connections when the link group is not in the link group list.

Signed-off-by: Karsten Graul <kgraul@...ux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@...ux.ibm.com>
---
 net/smc/smc_core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 349d789a9728..53a17cfa61af 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -160,8 +160,6 @@ static void smc_lgr_free_work(struct work_struct *work)
 	bool conns;
 
 	spin_lock_bh(&smc_lgr_list.lock);
-	if (list_empty(&lgr->list))
-		goto free;
 	read_lock_bh(&lgr->conns_lock);
 	conns = RB_EMPTY_ROOT(&lgr->conns_all);
 	read_unlock_bh(&lgr->conns_lock);
@@ -169,8 +167,8 @@ static void smc_lgr_free_work(struct work_struct *work)
 		spin_unlock_bh(&smc_lgr_list.lock);
 		return;
 	}
-	list_del_init(&lgr->list); /* remove from smc_lgr_list */
-free:
+	if (!list_empty(&lgr->list))
+		list_del_init(&lgr->list); /* remove from smc_lgr_list */
 	spin_unlock_bh(&smc_lgr_list.lock);
 
 	if (!lgr->is_smcd && !lgr->terminating)	{
-- 
2.16.4