I tried the patch from C.Y.M : http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=416055 and it works now perfect :-) I recommend to repack cdfs-src with the patch applied.
-- cdfs-scr kernel module fails to build https://launchpad.net/bugs/96105 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs