Re: [PATCH net-next v6 2/3] udp: implement memory accounting helpers

On Fri, 2016-10-21 at 15:34 +0200, Paolo Abeni wrote:

Updating sk_rmem_alloc would still need an atomic operation,
because it is touched also by the error queue path: we will end up
adding an atomic operation (or two, when reclaiming the fwd allocated
memory) inside the critical section. The contention will likely
increase.

The above is going to be quite intrusive: we need to pass an
additional argument all the way up to __skb_try_recv_datagram() and
change the function behavior according to its value.

If you are otherwise satisfied with the series in the current shape,
can't we instead build incrementally on top of it ? it will simplify
both reviews and re-factor tasks.

I certainly can provide an incremental patch, it might be easier for
both of us ;)



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