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ext4: test for DAX + journaling corruption

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Add a regression test for the following kernel commit:

  ext4: prevent data corruption with journaling + DAX

The test passes if either we successfully compare the data between
the mmap with journaling turned on and the one with journaling
turned off, or if we fail the chattr command to turn on or off
journaling.  The latter is how we prevent this issue in the kernel.

[eguan: add 'dax' group]

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Ross Zwisler
2018-01-04 01:11:20 -07:00
committed by Eryu Guan
parent 4515048910
commit 750a24e99e
6 changed files with 182 additions and 1 deletions
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@@ -115,6 +115,7 @@
/src/t_dir_offset2
/src/t_dir_type
/src/t_encrypted_d_revalidate
/src/t_ext4_dax_journal_corruption
/src/t_futimens
/src/t_getcwd
/src/t_holes