On Tue, 2015-11-10 at 21:41 -0800, Tom Herbert wrote:

Tolga, are you still planning to respin this patch (when tree opens?)

I was planning to add an union on skc_tx_queue_mapping and
sk_max_ack_backlog, so that adding a check on sk_max_ack_backlog in
listener lookup would not add an additional cache line miss.

This would remove false sharing because sk_ack_backlog is often dirtied
when a socket is added into accept queue.