From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [PATCH 1/2] lpm: fix tlb8 only not freed for depth=24
Date: Tue, 2 Aug 2016 16:49:29 +0100
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To: Wei Dai <wei.dai@intel.com>
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On Mon, Aug 01, 2016 at 03:03:20PM +0800, Wei Dai wrote:
> When all rules with depth > 24 are deleted in a same tlb8 group
> and only leave a rule with depth <= 24 in this group, the tlb8
> group should be recycled.
> 

The title needs a bit of rewording, I think e.g. 
lpm: fix freeing unused sub-table on rule delete

Otherwise:
Acked-by: Bruce Richardson <bruce.richardson@intel.com>