Merge tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 208e4c7e771b33a1e1d3707be121e878535db209..17a3c66639a9cd6625f333b4f64ab012e2cb56c4 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5266,6 +5266,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat)
 
 static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
 {
+       unsigned long __maybe_unused start = 0;
        unsigned long __maybe_unused offset = 0;
 
        /* Skip empty nodes */
@@ -5273,9 +5274,11 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
                return;
 
 #ifdef CONFIG_FLAT_NODE_MEM_MAP
+       start = pgdat->node_start_pfn & ~(MAX_ORDER_NR_PAGES - 1);
+       offset = pgdat->node_start_pfn - start;
        /* ia64 gets its own node_mem_map, before this, without bootmem */
        if (!pgdat->node_mem_map) {
-               unsigned long size, start, end;
+               unsigned long size, end;
                struct page *map;
 
                /*
@@ -5283,8 +5286,6 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
                 * aligned but the node_mem_map endpoints must be in order
                 * for the buddy allocator to function correctly.
                 */
-               start = pgdat->node_start_pfn & ~(MAX_ORDER_NR_PAGES - 1);
-               offset = pgdat->node_start_pfn - start;
                end = pgdat_end_pfn(pgdat);
                end = ALIGN(end, MAX_ORDER_NR_PAGES);
                size =  (end - start) * sizeof(struct page);