On Thu, Aug 30, 2018 at 01:11:18PM -0600, Jens Axboe wrote: > I think this belongs in the caller - both the validity check, and > passing in NOMERGE for this type of request. I don't want to impose > this overhead on everything, for a pretty niche case. It is just a single branch, which will be predicted as not taken for non-P2P users. The benefit is that we get proper error checking by doing it in the block code.