Get rid of group_info This is 8 bits which hold how many groups the key has, what to do the key group is out of bound and the group to redirect to if want to. This may save a few bytes, but is really annoying. So instead, just lay out the fields separately. We can optimize later in a sane way, with pahole, bitfields, etc. if we want. Signed-off-by: Ran Benita <ran234@gmail.com>