From: Paolo Abeni <[email protected]>
Date: Tue, 19 Sep 2017 12:11:43 +0200
> The commit 6b229cf77d68 ("udp: add batching to udp_rmem_release()")
> reduced greatly the cacheline contention between the BH and the US
> reader batching the rmem updates in most scenarios.
>
> Such optimization is explicitly avoided if the US reader is faster
> then BH processing.
>
> My fault, I initially suggested this kind of behavior due to concerns
> of possible regressions with small sk_rcvbuf values. Tests showed
> such concerns are misplaced, so this commit relaxes the condition
> for rmem bulk updates, obtaining small but measurable performance
> gain in the scenario described above.
>
> Signed-off-by: Paolo Abeni <[email protected]>
Applied, thanks Paolo.
