mm/init: fix zone boundary creation

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

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 2bcdfbf8c36d9a3c7fab44a553d62507c4d811cf..6a117213feb8727380610b71751b434956a6a9f2 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5696,15 +5696,18 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
                                sizeof(arch_zone_lowest_possible_pfn));
        memset(arch_zone_highest_possible_pfn, 0,
                                sizeof(arch_zone_highest_possible_pfn));
-       arch_zone_lowest_possible_pfn[0] = find_min_pfn_with_active_regions();
-       arch_zone_highest_possible_pfn[0] = max_zone_pfn[0];
-       for (i = 1; i < MAX_NR_ZONES; i++) {
+
+       start_pfn = find_min_pfn_with_active_regions();
+
+       for (i = 0; i < MAX_NR_ZONES; i++) {
                if (i == ZONE_MOVABLE)
                        continue;
-               arch_zone_lowest_possible_pfn[i] =
-                       arch_zone_highest_possible_pfn[i-1];
-               arch_zone_highest_possible_pfn[i] =
-                       max(max_zone_pfn[i], arch_zone_lowest_possible_pfn[i]);
+
+               end_pfn = max(max_zone_pfn[i], start_pfn);
+               arch_zone_lowest_possible_pfn[i] = start_pfn;
+               arch_zone_highest_possible_pfn[i] = end_pfn;
+
+               start_pfn = end_pfn;
        }
        arch_zone_lowest_possible_pfn[ZONE_MOVABLE] = 0;
        arch_zone_highest_possible_pfn[ZONE_MOVABLE] = 0;