these are needed for time64 compatibility, and are backported from the
y2038-endgame kernel branch and squashed with non-uapi changes
removed.
with just these patches applied the kernel will not build since
changes at the source level are also needed. but it is not practical
to backport source changes to an old kernel, and even if it were, it
would not make sense to include irrelevant changes that need rebasing
in a patchset intended only for the purpose of uapi header
installation.
Rich Felker