[PATCH 2/6] mm: compaction: change fast_isolate_freepages() to void type

[Baolin Wang <baolin.wang@linux.alibaba.com>]

No caller cares about the return value of fast_isolate_freepages(),
void it.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
 mm/compaction.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index 426bb6ce070b..3737c6591bfb 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1435,8 +1435,7 @@ static int next_search_order(struct compact_control *cc, int order)
 	return order;
 }
 
-static unsigned long
-fast_isolate_freepages(struct compact_control *cc)
+static void fast_isolate_freepages(struct compact_control *cc)
 {
 	unsigned int limit = max(1U, freelist_scan_limit(cc) >> 1);
 	unsigned int nr_scanned = 0;
@@ -1449,7 +1448,7 @@ fast_isolate_freepages(struct compact_control *cc)
 
 	/* Full compaction passes in a negative order */
 	if (cc->order <= 0)
-		return cc->free_pfn;
+		return;
 
 	/*
 	 * If starting the scan, use a deeper search and use the highest
@@ -1588,11 +1587,10 @@ fast_isolate_freepages(struct compact_control *cc)
 
 	cc->total_free_scanned += nr_scanned;
 	if (!page)
-		return cc->free_pfn;
+		return;
 
 	low_pfn = page_to_pfn(page);
 	fast_isolate_around(cc, low_pfn);
-	return low_pfn;
 }
 
 /*
-- 
2.27.0