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    Subject[PATCH 4/6] mm/page_alloc.c: use helper function zone_spans_pfn()
    Date
    Use helper function zone_spans_pfn() to check whether pfn is within a
    zone to simplify the code slightly.

    Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
    ---
    mm/page_alloc.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/mm/page_alloc.c b/mm/page_alloc.c
    index b5edcfe112aa..7bb79e959ab4 100644
    --- a/mm/page_alloc.c
    +++ b/mm/page_alloc.c
    @@ -1576,7 +1576,7 @@ static void __meminit init_reserved_page(unsigned long pfn)
    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);
    --
    2.23.0
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