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Date:	Thu, 24 Jul 2014 10:27:44 +0200
From:	Florian Westphal <>
To:	Eric Dumazet <>
Cc:	Pablo Neira Ayuso <>,
	Patrick McHardy <>,, netdev <>,
	Florian Westphal <>
Subject: Re: [PATCH nf-next] netfilter: xt_hashlimit: perform garbage
 collection from process context

Eric Dumazet <> wrote:
> From: Eric Dumazet <>
> xt_hashlimit cannot be used with large hash tables, because garbage
> collector is run from a timer. If table is really big, its possible
> to hold cpu for more than 500 msec, which is unacceptable.
> Switch to a work queue, and use proper scheduling points to remove
> latencies spikes.
> Later, we also could switch to a smoother garbage collection done
> at lookup time, one bucket at a time...
> Signed-off-by: Eric Dumazet <>

Reviewed-by: Florian Westphal <>

Thanks Eric!
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