From 108bcc96ef7047c02cad4d229f04da38186a3f3f Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Fri, 22 Feb 2013 16:35:23 -0800 Subject: mm: add & use zone_end_pfn() and zone_spans_pfn() Add 2 helpers (zone_end_pfn() and zone_spans_pfn()) to reduce code duplication. This also switches to using them in compaction (where an additional variable needed to be renamed), page_alloc, vmstat, memory_hotplug, and kmemleak. Note that in compaction.c I avoid calling zone_end_pfn() repeatedly because I expect at some point the sycronization issues with start_pfn & spanned_pages will need fixing, either by actually using the seqlock or clever memory barrier usage. Signed-off-by: Cody P Schafer Cc: David Hansen Cc: Catalin Marinas Cc: Johannes Weiner Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/kmemleak.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'mm/kmemleak.c') diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 752a705c77c2..83dd5fbf5e60 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -1300,9 +1300,8 @@ static void kmemleak_scan(void) */ lock_memory_hotplug(); for_each_online_node(i) { - pg_data_t *pgdat = NODE_DATA(i); - unsigned long start_pfn = pgdat->node_start_pfn; - unsigned long end_pfn = start_pfn + pgdat->node_spanned_pages; + unsigned long start_pfn = node_start_pfn(i); + unsigned long end_pfn = node_end_pfn(i); unsigned long pfn; for (pfn = start_pfn; pfn < end_pfn; pfn++) { -- cgit v1.2.3-55-g7522