Comment 6 for bug 236830

 * Kernel change is isolated, that looks reasonably ok. I take it CONFIG_CIFS_EXPERIMENTAL does not change any behaviour, just enables CONFIG_CIFS_UPCALL config option? Does CONFIG_CIFS_UPCALL only enables the userspace callback for authorization (cifs.spnego) or any other behaviour?
 * I wouldn't like to promote keyutils to main in hardy (it sounds fine for MIR for intrepid, though). Since we have to touch the samba package anyway and backport cifs.spnego, can this be modified to point out "Please install the keyutils package" in the error message if it is missing?