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-rw-r--r--mm/page_alloc.c34
1 files changed, 0 insertions, 34 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index c91598b1b4c0..7bb35ac0964a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6098,37 +6098,3 @@ void dump_page(struct page *page)
6098 dump_page_flags(page->flags); 6098 dump_page_flags(page->flags);
6099 mem_cgroup_print_bad_page(page); 6099 mem_cgroup_print_bad_page(page);
6100} 6100}
6101
6102/* reset zone->present_pages */
6103void reset_zone_present_pages(void)
6104{
6105 struct zone *z;
6106 int i, nid;
6107
6108 for_each_node_state(nid, N_HIGH_MEMORY) {
6109 for (i = 0; i < MAX_NR_ZONES; i++) {
6110 z = NODE_DATA(nid)->node_zones + i;
6111 z->present_pages = 0;
6112 }
6113 }
6114}
6115
6116/* calculate zone's present pages in buddy system */
6117void fixup_zone_present_pages(int nid, unsigned long start_pfn,
6118 unsigned long end_pfn)
6119{
6120 struct zone *z;
6121 unsigned long zone_start_pfn, zone_end_pfn;
6122 int i;
6123
6124 for (i = 0; i < MAX_NR_ZONES; i++) {
6125 z = NODE_DATA(nid)->node_zones + i;
6126 zone_start_pfn = z->zone_start_pfn;
6127 zone_end_pfn = zone_start_pfn + z->spanned_pages;
6128
6129 /* if the two regions intersect */
6130 if (!(zone_start_pfn >= end_pfn || zone_end_pfn <= start_pfn))
6131 z->present_pages += min(end_pfn, zone_end_pfn) -
6132 max(start_pfn, zone_start_pfn);
6133 }
6134}