[PATCH -mm] split_lru: fix pagevec_move_tail() doesn't treat unevictable page

[KOSAKI Motohiro]

even under writebacking, page can move to unevictable list.
so shouldn't pagevec_move_tail() check unevictable?


Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>

---
 mm/swap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/mm/swap.c
===================================================================
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -116,7 +116,7 @@ static void pagevec_move_tail(struct pag
 			zone = pagezone;
 			spin_lock(&zone->lru_lock);
 		}
-		if (PageLRU(page) && !PageActive(page)) {
+		if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
 			int lru = page_is_file_cache(page);
 			list_move_tail(&page->lru, &zone->lru[lru].list);
 			pgmoved++;


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