On Mon, Apr 29, 2024 at 01:04:12PM +0100, Keith Busch wrote: > An earlier version added a field in the bip to point to the original > bvec from the user address. That extra field wouldn't be used in the far > majority of cases, so moving the user bvec to the end of the existing > bip_vec is a spatial optimization. The code may look a little more > confusing that way, but I think it's better than making the bip bigger. I think we need to do something like that - just hiding the bounce buffer is not really maintainable once we get multiple levels of stacking and other creative bio cloning.