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| author | Jean-Louis Dupond <jean-louis@dupond.be> | 2023-10-03 14:52:37 +0200 |
|---|---|---|
| committer | Hanna Czenczek <hreitz@redhat.com> | 2023-11-06 16:15:07 +0100 |
| commit | b2b109041ecd1095384f5be5bb9badd13c1cf286 (patch) | |
| tree | 3c6cc355936a8c74e356a86bc3b3526d0def0bc4 /qapi/misc.json | |
| parent | 3e01f1147a16ca566694b97eafc941d62fa1e8d8 (diff) | |
qcow2: keep reference on zeroize with discard-no-unref enabled
When the discard-no-unref flag is enabled, we keep the reference for
normal discard requests.
But when a discard is executed on a snapshot/qcow2 image with backing,
the discards are saved as zero clusters in the snapshot image.
When committing the snapshot to the backing file, not
discard_in_l2_slice is called but zero_in_l2_slice. Which did not had
any logic to keep the reference when discard-no-unref is enabled.
Therefor we add logic in the zero_in_l2_slice call to keep the reference
on commit.
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1621
Signed-off-by: Jean-Louis Dupond <jean-louis@dupond.be>
Message-Id: <20231003125236.216473-2-jean-louis@dupond.be>
[hreitz: Made the documentation change more verbose, as discussed
on-list]
Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Diffstat (limited to 'qapi/misc.json')
0 files changed, 0 insertions, 0 deletions