netdev - [PATCH net-next 2/4] ipv6: fib6: use exit_batch

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Message-ID: <20240208111646.535705-3-edumazet@google.com>
Date: Thu,  8 Feb 2024 11:16:44 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: David Ahern <dsahern@...nel.org>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 2/4] ipv6: fib6: use exit_batch_rtnl method

Using exit_batch_rtnl method instead of exit_batch avoids
one rtnl_lock()/rtnl_unlock() pair in netns dismantle.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv6/fib6_rules.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 7523c4baef35e23d39e9537943593107a79ff551..44194332ee09f673d993271f2e1f278bd6f2c5a2 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -493,21 +493,20 @@ static int __net_init fib6_rules_net_init(struct net *net)
 	goto out;
 }
 
-static void __net_exit fib6_rules_net_exit_batch(struct list_head *net_list)
+static void __net_exit fib6_rules_exit_batch_rtnl(struct list_head *net_list,
+						  struct list_head *dev_to_kill)
 {
 	struct net *net;
 
-	rtnl_lock();
 	list_for_each_entry(net, net_list, exit_list) {
 		fib_rules_unregister(net->ipv6.fib6_rules_ops);
 		cond_resched();
 	}
-	rtnl_unlock();
 }
 
 static struct pernet_operations fib6_rules_net_ops = {
 	.init = fib6_rules_net_init,
-	.exit_batch = fib6_rules_net_exit_batch,
+	.exit_batch_rtnl = fib6_rules_exit_batch_rtnl,
 };
 
 int __init fib6_rules_init(void)
-- 
2.43.0.594.gd9cf4e227d-goog