xfs: annotate fix commits for upcoming 5.10.y backports

xfs: annotate fix commits for upcoming 5.10.y backports

In preparation for backporting xfs fixes to stable kernel 5.10.y,
annotate some of the tests that pass after applying the backports.

Most of the annotated tests have the fix commit documented either
in comment or in commit message already.

All tests have been verified to pass with fix commits apply, but
for a few tests, a failure was observed when running on kernel without
the documented fix commit. That is probably because failure happens
only on a specific setup.

Generic tests have also been annotated with xfs fix commits.
That may produce wrong hints if the test fails on another fs, but
that is what hints are for - to give tester a hint, so if tester is
not testing xfs, it's easy to figure out that the hint is irrelevant.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>