On Fri, Jan 23, 2015 at 04:19:40PM -0800, akpm@xxxxxxxxxxxxxxxxxxxx wrote: > The mm-of-the-moment snapshot 2015-01-23-16-19 has been uploaded to > > http://www.ozlabs.org/~akpm/mmotm/ > New build failure: mm/page_alloc.c: In function 'alloc_node_mem_map': mm/page_alloc.c:4973: error: 'ARCH_PFN_OFFSET' undeclared (first use in this function) mm/page_alloc.c:4973: error: (Each undeclared identifier is reported only once mm/page_alloc.c:4973: error: for each function it appears in.) make[1]: *** [mm/page_alloc.o] Error 1 Culprit is c2ae2ed329 ("mm/page_alloc.c: don't offset memmap for flatmem"). While the code in question was already there, it is now also built if CONFIG_FLATMEM is defined. Since the file defining ARCH_PFN_OFFSET is not directly included, the build now fails for some architectures. Affected: avr32:defconfig avr32:merisc_defconfig avr32:atngw100mkii_evklcd101_defconfig m68k:m5272c3_defconfig m68k:m5307c3_defconfig m68k:m5249evb_defconfig m68k:m5407c3_defconfig mn10300:asb2303_defconfig mn10300:asb2364_defconfig Guenter -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>