October 2015:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=eb9fae328faff9807a4ab5c1834b19f34dd155d4

Sounds like the speed up is pretty subtle, so I'm not surprised I didn't
notice...
On Mon, 18 Jul 2016 at 05:05 Dave Taht <dave.taht@gmail.com> wrote:

> https://www.ietf.org/proceedings/96/slides/slides-96-tcpm-3.pdf
>
> --
> Dave Täht
> Let's go make home routers and wifi faster! With better software!
> http://blog.cerowrt.org
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