PMD_FRAG_SIZE     276 arch/powerpc/mm/book3s64/pgtable.c 		pmd_frag = ret + PMD_FRAG_SIZE;
PMD_FRAG_SIZE     322 arch/powerpc/mm/book3s64/pgtable.c 		mm->context.pmd_frag = ret + PMD_FRAG_SIZE;