openafs-modules-dkms 1.6.9-1: openafs kernel module failed to build

[Dekker500]

The day after upgrading from 14.04 to 14.10, I did a Software Update (using Software Updater gui). I believe Ubuntu Core was being updated.

In case it affects things, this is an Ubuntu 64 guest within a VirtualBox (VBox 4.3.16 r95972 with same guest additions installed) running on Windows 7 x64.

In case it matters:
$ apt-cache policy dkms
dkms:
  Installed: 2.2.0.3-1.1ubuntu5
  Candidate: 2.2.0.3-1.1ubuntu5
  Version table:
 *** 2.2.0.3-1.1ubuntu5 0
        500 http://ca.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages
        100 /var/lib/dpkg/status

$ apt-cache policy dkms
dkms:
  Installed: 2.2.0.3-1.1ubuntu5
  Candidate: 2.2.0.3-1.1ubuntu5
  Version table:
 *** 2.2.0.3-1.1ubuntu5 0
        500 http://ca.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Package
DistroRelease: Ubuntu 14.10
Package: openafs-modules-dkms 1.6.9-1
ProcVersionSignature: Ubuntu 3.16.0-16.22-generic 3.16.2
Uname: Linux 3.16.0-16-generic x86_64
ApportVersion: 2.14.7-0ubuntu2
Architecture: amd64
DKMSKernelVersion: 3.16.0-16-generic
Date: Thu Sep 18 12:49:39 2014
DuplicateSignature: dkms:openafs-modules-dkms:1.6.9-1:/var/lib/dkms/openafs/1.6.9/build/src/libafs/MODLOAD-3.16.0-16-generic-SP/osi_vnodeops.c:815:19: error: ‘generic_file_splice_write’ undeclared here (not in a function)
InstallationDate: Installed on 2014-08-28 (21 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
PackageVersion: 1.6.9-1
SourcePackage: openafs
Title: openafs-modules-dkms 1.6.9-1: openafs kernel module failed to build
UpgradeStatus: Upgraded to utopic on 2014-09-18 (0 days ago)