[patch 106/262] mm/page_alloc.c: use helper function zone_spans_pfn()

Andrew Morton
2021-11-05T20:40:15Z

From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/page_alloc.c: use helper function zone_spans_pfn()

Use helper function zone_spans_pfn() to check whether pfn is within a zone
to simplify the code slightly.

Link: https://lkml.kernel.org/r/20210902121242.41607-5-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/page_alloc.c~mm-page_allocc-use-helper-function-zone_spans_pfn
+++ a/mm/page_alloc.c
@@ -1583,7 +1583,7 @@ static void __meminit init_reserved_page
for (zid = 0; zid < MAX_NR_ZONES; zid++) {
struct zone *zone = &pgdat->node_zones[zid];

- if (pfn >= zone->zone_start_pfn && pfn < zone_end_pfn(zone))
+ if (zone_spans_pfn(zone, pfn))
break;
}
__init_single_page(pfn_to_page(pfn), pfn, zid, nid);
_