On Sun, Nov 24, 2024 at 09:12:26PM -0800, Christoph Hellwig wrote: > This feels like it's heading in the wrong direction, as it just adds > more hacks. > > IMHO the right thing is to: > > a) document current assumptions and tell users very clearly to use > dm-thin to get the expected semantics > b) if we have a use for it, provide an option to use write zeroes > instead that can be used on any device > > I'm happy to do that work, but until then I'd suggest to skip this and > the next two patches. Works for me. :) Also feel free to grab/modify patch 4 if you like. --D