netdev - Re: [Patch nf 2/3] xt_hashlimit: reduce hashlimit_mutex scope for htable

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Message-ID: <20200131220917.GL795@breakpoint.cc>
Date:   Fri, 31 Jan 2020 23:09:17 +0100
From:   Florian Westphal <fw@...len.de>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        syzbot+adf6c6c2be1c3a718121@...kaller.appspotmail.com,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>
Subject: Re: [Patch nf 2/3] xt_hashlimit: reduce hashlimit_mutex scope for
 htable_put()

Cong Wang <xiyou.wangcong@...il.com> wrote:
> It is unnecessary to hold hashlimit_mutex for htable_destroy()
> as it is already removed from the global hashtable and its
> refcount is already zero.
> 
> Also, switch hinfo->use to refcount_t so that we don't have
> to hold the mutex until it reaches zero in htable_put().

LGTM, thanks!

Acked-by: Florian Westphal <fw@...len.de>