Comment 3 for bug 2032959

JFYI.

All that you need to properly backport this series is:

1. port https://github.com/torvalds/linux/commit/ce0d5bd3a6c176f9a3bf867624a07119dd4d0878
(as this patch changes cephfs network protocol and have to be applied before cephfs idmapped mounts as in this feature we are extending cephfs network protocol too)

2. apply patches from https://lore<email address hidden>/
(alternatively you can take patches from https://github.com/ceph/ceph-client/commits/testing
starting from commit https://github.com/ceph/ceph-client/commit/6efd3e9974a02bda26e039ce81a3824db3cee74f
until https://github.com/ceph/ceph-client/commit/5a077938dadefa2b159267718d7998ca880aeb9c )

As I can see here https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/mantic/commit/fs/ceph?h=master-next&id=e5e9604b7311bda41ffe266dbd60cf1eb637611b you have also backported fscrypt series. It's not a strict requirement or dependency.