[PATCH 2/6] mm, hwpoison: use __PageMovable() to detect non-lru movable pages

[Miaohe Lin]

It's more recommended to use __PageMovable() to detect non-lru movable
pages. We can avoid bumping page refcnt via isolate_movable_page() for
the isolated lru pages. Also if pages become PageLRU just after they're
checked but before trying to isolate them, isolate_lru_page() will be
called to do the right work.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
 mm/memory-failure.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index a923a6dde871..3966fa6abe03 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2404,7 +2404,7 @@ EXPORT_SYMBOL(unpoison_memory);
 static bool isolate_page(struct page *page, struct list_head *pagelist)
 {
 	bool isolated = false;
-	bool lru = PageLRU(page);
+	bool lru = !__PageMovable(page);
 
 	if (PageHuge(page)) {
 		isolated = !isolate_hugetlb(page, pagelist);
-- 
2.23.0