On Wed, 25 May 2016 14:00:07 -0700 Yang Shi yang.shi@linaro.org wrote:
register_page_bootmem_info_node() is invoked in mem_init(), so it will be called before page_alloc_init_late() if CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled. But, pfn_to_nid() depends on memmap which won't be fully setup until page_alloc_init_late() is done, so replace pfn_to_nid() by early_pfn_to_nid().
What are the runtime effects of this fix?