This came indeed in via a cherry-pick made by Ubuntu [0], that was an early attempt to fix a bug that was actually present in the ceph layer, as confirmed by the original patch author[1], and fixed actually there now [2].
[0]: https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/mantic/commit/?h=master-prep&id=a53dba9297be9597eac7b17738723bd44bac97ea
[1]: https://<email address hidden>/
[2]: https://patchwork.kernel<email address hidden>/
This came indeed in via a cherry-pick made by Ubuntu [0], that was an early attempt to fix a bug that was actually present in the ceph layer, as confirmed by the original patch author[1], and fixed actually there now [2].
[0]: https:/ /git.launchpad. net/~ubuntu- kernel/ ubuntu/ +source/ linux/+ git/mantic/ commit/ ?h=master- prep&id= a53dba9297be959 7eac7b17738723b d44bac97ea
[1]: https://<email address hidden>/
[2]: https:/ /patchwork. kernel<email address hidden>/