Description of problem:

Adapt VDO to reflect backported kernel changes, such that it can be built against the latest kernel for the release.

Version-Release number of selected component (if applicable): kmod-kvdo-8.2.1.6-98.el9

How reproducible: 100%

Steps to Reproduce:
1. Install the latest rhel-9.4 kernel on a system (including kernel-devel package)
2. Obtain the latest kmod-kvdo source tarball from GitHub and scp it to the test host
3. Extract the kvdo tarball and cd into the directory
4. Run 'make -C /usr/src/kernels/$(uname -r) M=$(pwd)' to build against the kernel source

Expected results:
kmod-kvdo builds as intended.

Actual results:
kmod-kvdo fails to build.