[PATCH v2 5/5] mm: remove unneeded local variable in free_area_init_core

[Baoquan He]

Local variable 'zone_start_pfn' is not needed since there's only
one call site in free_area_init_core(). Let's remove it and pass
zone->zone_start_pfn directly to init_currently_empty_zone().

Signed-off-by: Baoquan He <b...@redhat.com>
---
 mm/page_alloc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7f0a917ab858..189a86253c93 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6986,7 +6986,6 @@ static void __init free_area_init_core(struct pglist_data 
*pgdat)
        for (j = 0; j < MAX_NR_ZONES; j++) {
                struct zone *zone = pgdat->node_zones + j;
                unsigned long size, freesize, memmap_pages;
-               unsigned long zone_start_pfn = zone->zone_start_pfn;
 
                size = zone->spanned_pages;
                freesize = zone->present_pages;
@@ -7035,7 +7034,7 @@ static void __init free_area_init_core(struct pglist_data 
*pgdat)
 
                set_pageblock_order();
                setup_usemap(zone);
-               init_currently_empty_zone(zone, zone_start_pfn, size);
+               init_currently_empty_zone(zone, zone->zone_start_pfn, size);
                memmap_init_zone(zone);
        }
 }
-- 
2.17.2