On Fri, May 05, 2023 at 06:28:04AM +0100, Matthew Wilcox wrote: > But the radix tree API is simply a different (and worse) API to the > exact same data structure as the XArray. Using the XArray instead of > the radix tree is still an apples-to-apples comparison. And if he wants to do a 1:1 comparism, just convert null_blk to xarray, which would actually be more useful work than this whole thread..