[PATCH 0/3] Overlayfs orphan index cleanup tests

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Eryu,

Vivek found a bug with the index nlink accounting of the index feature
that was introduced in kernel v4.13.

The bug was there from the first implementation of index and the
tests I wrote to verify nlink accounting (overlay/033,034) did not
cover the bug use case.

The first regression test (overlay/047) demonstrates the effects
of the bug on end user.

The second regression test (overlay/048) adds the missing test coverage
of the existing nlink accounting tests.

The kernel bug was hiding a bug in test overlay/042, so Vivek's
kernel fix broke the test. The last patch fixes the wrong/broken test.

Amir.

Amir Goldstein (3):
  overlay: regression test for hardlink breakage after unlink and mount
  overlay: regression test for orphan index cleanup on mount
  overlay/042: remove wrong check for empty index

 tests/overlay/042     |   4 --
 tests/overlay/047     | 107 ++++++++++++++++++++++++++++++++++++++
 tests/overlay/047.out |  16 ++++++
 tests/overlay/048     | 141 ++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/overlay/048.out |  18 +++++++
 tests/overlay/group   |   2 +
 6 files changed, 284 insertions(+), 4 deletions(-)
 create mode 100755 tests/overlay/047
 create mode 100644 tests/overlay/047.out
 create mode 100755 tests/overlay/048
 create mode 100644 tests/overlay/048.out

-- 
2.7.4

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