On Thu, 2012-10-18 at 17:02 +0200, Ralf Baechle wrote:

  CC      mm/huge_memory.o
mm/huge_memory.c: In function ‘do_huge_pmd_prot_none’:
mm/huge_memory.c:789:3: error: incompatible type for argument 3 of ‘update_mmu_cache’

That appears to have become update_mmu_cache_pmd(), which makes sense
given that there's now architectures that care about it.