diff --git a/mm/ksm.c b/mm/ksm.c
index 452ac8346e6e280bc6d782ef609d1f2e53be617b..9e99cb12d330088f2cf6a34ac5fcb930e3b0b9a2 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2754,18 +2754,16 @@ static void ksm_do_scan(unsigned int scan_npages)
 {
 	struct ksm_rmap_item *rmap_item;
 	struct page *page;
-	unsigned int npages = scan_npages;
 
-	while (npages-- && likely(!freezing(current))) {
+	while (scan_npages-- && likely(!freezing(current))) {
 		cond_resched();
 		rmap_item = scan_get_next_rmap_item(&page);
 		if (!rmap_item)
 			return;
 		cmp_and_merge_page(page, rmap_item);
 		put_page(page);
+		ksm_pages_scanned++;
 	}
-
-	ksm_pages_scanned += scan_npages - npages;
 }
 
 static int ksmd_should_run(void)