After this discussion (and some other customers/users requests on the same bug), knowing that the 1.6.5 backport was not eligible for a SRU (just like Steve pointed out) I started to cherry-pick code from openafs 1.6.5 to openafs 1.6.1, so the openafs dkms module was able to compile on HWE kernels.
With that I could see that this approach would also not result in a eligible RSU. There are too many changes from kernel 3.2 to kernel 3.11 and openafs has a huge amount of pre-defined code based on these changes (Rightly pointed out by Anders). After fixing some wrongly auto-generated includes, I could see that there were 2 approaches for bringing 1.6.5 behavior to 1.6.1: 1) Remove "STRUCT_TASK_STRUCT_HAS_CRED" define. Autotools is correctly checking for the existence of a "credentials" structure inside task_struct (kernel). Since newer kernels (3.x) have this structure, the code defines STRUCT_TASK_STRUCT_HAS_CRED variable and starts accessing all credential variables directly from kernel defined structures (includes). Removing this would make openafs behave like it used to in the past (older kernels from 2.6.x) and would imply fixing all "current_task"->cred structure (changing upstream code on that specific version). Of course, after this, even more changes would be expected. -> not a good approach 2) Cherry-pick code from 1.6.5 to 1.6.1. There are 398 commits between this two versions and, taking in consideration only dkms module, this could be a reasonable direction. The problem is that since there are a huge amount of changes in the kernel structures for process, sched, security (between v3.2 and v3.11) the changes wouldn't be acceptable on SRU. Some of needed changes would be: dentry_open new prototype, kmap_atomic new prototype, vmtruncated deprecated, task_struct cred session_keyring location, new proc_create function on module, and so on... -> not a good approach also * see next comment -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1206387 Title: openafs-modules-dkms 1.6.1-1+ubuntu0.2: module FTBFS on 3.8.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openafs/+bug/1206387/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
