On Tue, May 26, 2020 at 04:05:58PM -0600, William Kucharski wrote: > Thinking about this, if the intent is to make THP usable for any > greater than PAGESIZE page size, this routine should probably go back > to taking a size or perhaps order parameter so it could be called to > align addresses accordingly rather than hard code PMD_SIZE. Yes, that's a good point. For example, on ARM, we'd want to 64kB-align files which we could use 64kB pages, but there would be no point doing that on x86. I'll revert to the earlier version of this patch that you sent. Not sure how best to allow the architecture to tell us what page sizes are useful to align to, but that earlier patch is a better base to build on than this version.
