Today I decided to implement VM_HUGEPAGE support for XFS. It turned out to be a rather simpler implementation than I was expecting because I could reuse the readahead implementation.
Feel free to try it for yourself: http://git.infradead.org/users/willy/pagecache.git The patches up to "fs: Do not update nr_thps for mappings which support... " are in linux-next for 5.10. I hope to get the rest into 5.11.
