On Thu, Mar 21, 2019 at 04:10:22PM -0700, Christoph Hellwig wrote: > Hi all, > > with all the discussion on small I/O performance lately I thought > it was time off to dust my old idea to optimize this path a bit > by avoiding to build a scatterlist. I've only done very basic > testing because I've been a bit busy, but I thought it might be > worthwhile to get it out for feedback. Tests well here with a measurable IOPs improvement at lower queue depths. Series looks good to me, especially patch 5! :p Reviewed-by: Keith Busch <keith.busch@xxxxxxxxx>