[PATCH v5 0/5] Fix some issues about ext4-test

[Ye Bin <yebin@huaweicloud.com>]

From: Ye Bin <yebin10@huawei.com>

This patch series is based on:
[1]: https://lore.kernel.org/linux-ext4/5bb9041471dab8ce870c191c19cbe4df57473be8.1772381213.git.ritesh.list@gmail.com/

Diff v5 vs v4:
1. Patch[3]
Move ext4_es_register_shrinker() before setting up the mock inode.

Diff v4 vs v3:
1. Re-order PATCH[1] and PATCH[2].
2. Remove unnecessary check when call ext4_es_unregister_shrinker().

Diff v3 vs v2:
1. Remove three patches from this patchset:
  ext4: fix mballoc-test.c is not compiled when EXT4_KUNIT_TESTS=M
  ext4: introduce EXPORT_SYMBOL_FOR_EXT4_TEST() helper
  ext4: fix extents-test.c is not compiled when EXT4_KUNIT_TESTS=M
2. Fix 'sbi' leak as no "sbi->s_sb->s_op->put_super()" registered.

Diff v2 vs v1:
1. Fix compile warning when disable EXT4_KUNIT_TESTS for patch[1][3];
2. Remove reviewed-by tag for patch[1];

Patch [1]-[2]:
Decoupled mballoc-test and extents-test from ext4. Patch [1] does not
have any changes compared to the previously released version, so the
reviewed-by is added.
Patch [3-7]:
Bugfix for extents-test.c.
Patch [8]:
Bugfix for mballoc-test.c.

Ye Bin (5):
  ext4: fix miss unlock 'sb->s_umount' in extents_kunit_init()
  ext4: call deactivate_super() in extents_kunit_exit()
  ext4: fix the error handling process in extents_kunit_init).
  ext4: fix possible null-ptr-deref in extents_kunit_exit()
  ext4: fix possible null-ptr-deref in mbt_kunit_exit()

 fs/ext4/extents-test.c | 60 ++++++++++++++++++++++++++++++------------
 fs/ext4/mballoc-test.c |  6 ++++-
 2 files changed, 48 insertions(+), 18 deletions(-)

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2.34.1