On Mon, Dec 17, 2018 at 06:42:47PM +0800, Ming Lei wrote: > When requst is added to rq list of sw queue(ctx), the rq may be from > different hctx, after multi queue mapping is introduced. > > So we have to put the request into one per-queue-type list inside > sw queue, otherwise the request may be dispatched to wrong hw queue. Hmm. For one I don't think splitting the lock makes sense even for split lists. Second, do we really need different lists, or just take the type into account when dispatching from rq_list? I'm not really sure about that one, but a rationale for splitting might be worth adding to the changelog if you want to stick to the split lists.
