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mm/memory_hotplug: use helper function zone_end_pfn() to get end_pfn 

Commit 108bcc96ef ("mm: add & use zone_end_pfn() and zone_spans_pfn()")
introduced the helper zone_end_pfn() to calculate the zone end pfn.  But
update_pgdat_span() forgot to use it.

Use this helper and rename local variable zone_end_pfn to end_pfn to avoid
a naming conflict with the existing zone_end_pfn().

Link: https://lkml.kernel.org/r/20210127093211.37714-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2021-02-25 17:17:21 -08:00 committed by Linus Torvalds
parent 26011267e1
commit 6c922cf751
1 changed files with 4 additions and 5 deletions
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9
mm/memory_hotplug.c
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@ -493,20 +493,19 @@ static void update_pgdat_span(struct pglist_data *pgdat)
for (zone = pgdat->node_zones;
zone < pgdat->node_zones + MAX_NR_ZONES; zone++) {
unsigned long zone_end_pfn = zone->zone_start_pfn +
zone->spanned_pages;
unsigned long end_pfn = zone_end_pfn(zone);
/* No need to lock the zones, they can't change. */
if (!zone->spanned_pages)
continue;
if (!node_end_pfn) {
node_start_pfn = zone->zone_start_pfn;
node_end_pfn = zone_end_pfn;
node_end_pfn = end_pfn;
continue;
}
if (zone_end_pfn > node_end_pfn)
node_end_pfn = zone_end_pfn;
if (end_pfn > node_end_pfn)
node_end_pfn = end_pfn;
if (zone->zone_start_pfn < node_start_pfn)
node_start_pfn = zone->zone_start_pfn;
}