> > Hell, if you twist my arm I'll even write the patches for this. > > I'm also happy to help with that despite very limited time, but I'd > rather avoid doing the misguided mount ID thing. As I've said earlier, independent of the new handle type returning the new mount id is useful and needed because it allows the caller to reliably generate a mount fd for use with open_by_handle_at() via statmount(). That won't be solved by a new handle type and is racy with the old mount id. So I intend to accept a version of this patch.