On 12/16/2015 03:47 PM, Michal Hocko wrote:
On Wed 16-12-15 16:29:30, Kirill A. Shutemov wrote:
The VM_BUG_ON_PAGE() would catch such cases if any still exists.
Thanks, this better than a silent breakage.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
---
mm/vmscan.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 964390906167..05dd182f04fd 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1436,6 +1436,7 @@ int isolate_lru_page(struct page *page)
int ret = -EBUSY;
VM_BUG_ON_PAGE(!page_count(page), page);
+ VM_BUG_ON_PAGE(PageTail(page), page);
if (PageLRU(page)) {
struct zone *zone = page_zone(page);
--
2.6.2
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