Hi, currently procfs doesn't allow one to alter the options at runtime using fsys_set_options. This is necessary to make mount -oremount work. I also noticed that fsys_get_options would only return the translators name, but not its options, so I've implemented this as well.
FWIW this is meant to be applied on top of procfs as found in the hurd packaging git with the patches in debian/patches applied. Please let me know if that is inappropriate. Comments are welcome :) Cheers, Justus