I'd like to deprecate and eventually remove the protofile functionality in mkfs.xfs, because it's not well tested code which is really a special snowflake in the codebase that adds complexity. And as far as I know, nobody uses it. If I'm wrong though, speak up now. Is anybody using protofiles? (If you don't know what a protofile is, then you're not using it. And let's not turn this into a "well I could think of a way to use it" discussion, because it's been there for a couple decades and if you're not using it /yet/ ... unless there really is some new usecase on the horizon which would clearly depend on it.) Thanks, -Eric