[PATCH 3/3] lumpy: move to using pfn_valid_within()

[Andy Whitcroft]

Switch to using pfn_valid_within() in lumpy reclaim.

Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
---
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c3dc544..cf55c57 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -722,11 +722,10 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
 			/* The target page is in the block, ignore it. */
 			if (unlikely(pfn == page_pfn))
 				continue;
-#ifdef CONFIG_HOLES_IN_ZONE
+
 			/* Avoid holes within the zone. */
-			if (unlikely(!pfn_valid(pfn)))
+			if (unlikely(!pfn_valid_within(pfn)))
 				break;
-#endif
 
 			cursor_page = pfn_to_page(pfn);
 			/* Check that we have not crossed a zone boundary. */
-
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