From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>
Subject: [PATCH net-next] fib: remove a useless synchronize_rcu() call
Date: Wed, 13 Oct 2010 16:43:04 +0200 [thread overview]
Message-ID: <1286980984.3876.679.camel@edumazet-laptop> (raw)
fib_nl_delrule() calls synchronize_rcu() for no apparent reason,
while rtnl is held.
I suspect it was done to avoid an atomic_inc_not_zero() in
fib_rules_lookup(), which commit 7fa7cb7109d07 added anyway.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
---
net/core/fib_rules.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 21698f8..1bc3f25 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -494,7 +494,6 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
}
}
- synchronize_rcu();
notify_rule_change(RTM_DELRULE, rule, ops, nlh,
NETLINK_CB(skb).pid);
fib_rule_put(rule);
next reply other threads:[~2010-10-13 14:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-13 14:43 Eric Dumazet [this message]
2010-10-16 18:55 ` [PATCH net-next] fib: remove a useless synchronize_rcu() call David Miller
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