netdev - Re: [PATCH v4 12/18] nfnetlink_gueue: exit

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Message-ID: <de9bd0eb-a0f5-1329-4825-e17048528191@virtuozzo.com>
Date:   Sun, 12 Nov 2017 12:02:23 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     Florian Westphal <fw@...len.de>
Cc:     netdev@...r.kernel.org, Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org
Subject: Re: [PATCH v4 12/18] nfnetlink_gueue: exit_net cleanup check added

On 2017-11-12 11:52, Florian Westphal wrote:
> Vasily Averin <vvs@...tuozzo.com> wrote:
>> Be sure that instance_table array initialized in net_init hook
>> was return to initial state.
> 
>> +	for (i = 0; i < INSTANCE_BUCKETS; i++)
>> +		if (WARN_ON_ONCE(!hlist_empty(&q->instance_table[i])))
>> +			break;
> 
> This looks strange, why if/break?

I did not want to generate huge number of messages on each non-empty hash bucket.

> Plain WARN_ON_ONCE should be enough, but thats a nit so:

Oh, you're right.
In first patch version WARN_ON  was used here.
I've missed that only first message will be printed with _ONCE check.

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