Hi Andrew, After merging the akpm-current tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: In file included from mm/vmscan.c:50:0: include/linux/swapops.h: In function 'is_swap_pte': include/linux/swapops.h:57:2: error: implicit declaration of function 'pte_present_nonuma' [-Werror=implicit-function-declaration] return !pte_none(pte) && !pte_present_nonuma(pte) && !pte_file(pte); ^ Caused by commit 851fe3337768 ("x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels"). This build does not have CONFIG_NUMA_BALANCING set. I have reverted that commit for today. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au