mm: fix s390 BUG by __set_page_dirty_no_writeback on swap

[pandora-kernel.git] / mm / swap.c

diff --git a/mm/swap.c b/mm/swap.c
index a91caf7..55b266d 100644 (file)
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -667,7 +667,7 @@ void lru_add_page_tail(struct zone* zone,
        VM_BUG_ON(!PageHead(page));
        VM_BUG_ON(PageCompound(page_tail));
        VM_BUG_ON(PageLRU(page_tail));
-       VM_BUG_ON(!spin_is_locked(&zone->lru_lock));
+       VM_BUG_ON(NR_CPUS != 1 && !spin_is_locked(&zone->lru_lock));
 
        SetPageLRU(page_tail);