On Thu, Jun 15, 2023 at 03:08:36PM +1200, Michael Schmitz wrote: > +/* MSch 20230615: any field used by the Linux kernel must be > + * annotated __be32! If any fields require increase to 64 > + * bit size, rdb_ID _must_ be changed! > + */ This is a really weird comment. If you change on-disk format it is a different format and needs to be marked as such, sure. And as far as I can tell everything that is a __u32 here should be an __be32 because it is a big endian on-disk format. Why would you change only a single field?