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Qu Wenruo
f24afad0f8
[Problem]
Since commit fcebe4562dec83b3f8d308 ("Btrfs: rework qgroup accounting"),
quota data update is delayed after delayed_ref calculation, and lacks
correct protection to detect root reference which shouldn't be counted
in current sequence number but already written into extent backref.
This makes exclusive reference not decreased correctly and give incorrect
result.
[Test procedure]
1. Create a btrfs with 3 subvolumes, quota enabled and rescanned.
2. Create a file in 1st subvolume
3. Clone the file to 2nd and 3rd subvolume
4. Sync the fs to reflect the changes in qgroup.
5. Check the qgroup data
[Expected result]
None of the subvolume has exclusive reference to the file.
[Actual result]
The first subvolume still have exclusive reference to the file.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
8 lines
173 B
Plaintext
8 lines
173 B
Plaintext
QA output created by 091
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wrote 262144/262144 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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65536 65536
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327680 65536
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327680 65536
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327680 65536
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