From: Florian Westphal <fw@strlen.de>
To: Weidong Wang <wangweidong1@huawei.com>
Cc: pablo@netfilter.org, kaber@trash.net, kadlec@blackhole.kfki.hu,
David Miller <davem@davemloft.net>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] netfilter: nf_conntrack: remove the unneed check for *bucket
Date: Sat, 30 Jan 2016 22:30:03 +0100 [thread overview]
Message-ID: <20160130213003.GA13560@breakpoint.cc> (raw)
In-Reply-To: <56ACABBC.9050303@huawei.com>
Weidong Wang <wangweidong1@huawei.com> wrote:
> In the 'for(...) {}', the *bucket alwasy < net->ct.htable_size,
> so remove the check
> @@ -1383,14 +1383,12 @@ get_next_corpse(struct net *net, int (*iter)(struct nf_conn *i, void *data),
> lockp = &nf_conntrack_locks[*bucket % CONNTRACK_LOCKS];
> local_bh_disable();
> spin_lock(lockp);
> - if (*bucket < net->ct.htable_size) {
AFAIU net->ct.htable_size can shrink between for-test and aquiring
the bucket lockp, so this additional if-test is needed.
next prev parent reply other threads:[~2016-01-30 21:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-30 12:25 [PATCH net-next] netfilter: nf_conntrack: remove the unneed check for *bucket Weidong Wang
2016-01-30 21:30 ` Florian Westphal [this message]
2016-01-31 3:37 ` Weidong Wang
2016-02-01 16:39 ` David Laight
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