In isolate_lru_pages(), *scanned reports one more scan because the scan
counter is increased one more time on exit of the while-loop.
Change the while-loop to for-loop to fix it.
Signed-off-by: Nick Piggin <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
---
--- linux-2.6.16-rc5-mm2.orig/mm/vmscan.c
+++ linux-2.6.16-rc5-mm2/mm/vmscan.c
@@ -1074,9 +1074,9 @@ static unsigned long isolate_lru_pages(u
{
unsigned long nr_taken = 0;
struct page *page;
- unsigned long scan = 0;
+ unsigned long scan;
- while (scan++ < nr_to_scan && !list_empty(src)) {
+ for (scan = 0; scan < nr_to_scan && !list_empty(src); scan++) {
struct list_head *target;
page = lru_to_page(src);
prefetchw_prev_lru_page(page, src, flags);