> My main concern was whether iomap overhead ends up slowing down writes > that don't need granular dirty tracking. I didn't see any noticeable > difference in performance though when I tested it out by writing out > all entire chunks. > Hi Joanne, Sorry I couldn't get to this any earlier. But FWIW, I tried this scenario as well (writes that don’t require fine-grained dirty tracking). Like you mentioned, I also didn’t observe any performance drop with the patchset applied.
