mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Filipe Manana
22fc64ea50
Regression test for a btrfs clone ioctl issue where races between
a clone operation and concurrent target file reads would result in
leaving stale data in the page cache. After the clone operation
finished, reading from the clone target file would return the old
and no longer valid data. This affected only buffered reads (i.e.
didn't affect direct IO reads).
This issue was fixed by the following linux kernel patch:
Btrfs: ensure readers see new data after a clone operation
(commit c125b8bff1d9f6c8c91ce4eb8bd5616058c7d510)
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
211 lines
10 KiB
Plaintext
211 lines
10 KiB
Plaintext
QA output created by 081
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wrote 8192/8192 bytes at offset 753664
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Creating target file...
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wrote 819200/819200 bytes at offset 0
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Verifying file digests after cloning
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14968c092c68e32fa35e776392d14523 SCRATCH_MNT/foo
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14968c092c68e32fa35e776392d14523 SCRATCH_MNT/bar
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Verifying target file digest after umount + mount
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14968c092c68e32fa35e776392d14523 SCRATCH_MNT/bar
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