Jens Axboe [off-list ref] writes:

Rusty, do you want to ack this (and I'll slurp it up for 3.17) or take 
this yourself? Or something else?

I'm happy with the idea, and importantly, the new feature bit.  So once
the implementation is tweaked, please add:

        Acked-by: Rusty Russell [off-list ref]

The new feature bit takes us outside the current standard (which is
hopefully now frozen), but I'll just add it to the pile of things to
revisit for 1.1.

Thanks,
Rusty,