These build errors only occur if one fails to first run "make headers".
However, that is a non-obvious and instrusive requirement, and so there
was a discussion on how to get rid of it [1]. This uses that solution.
These two files were created by taking a snapshot of the generated
header files that are created via "make headers". These two files were
copied from ./usr/include/linux/ to ./tools/include/uapi/linux/ .
That fixes the selftests/mm build on today's Arch Linux (which required
the userfaultfd.h) and Ubuntu 23.04 (which additionally required
memfd.h).
[1] https://lore.kernel.org/all/783a4178-1dec-4e30-989a-5174b8176b09@xxxxxxxxxx/
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
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