Signed-off-by: Radosław Smogura <mail@xxxxxxxxxx>
---
mm/vmscan.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c52b235..7299b71 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -636,7 +636,7 @@ void putback_lru_page(struct page *page)
int was_unevictable = PageUnevictable(page);
VM_BUG_ON(PageLRU(page));
-
+ VM_BUG_ON(PageTail(page));
redo:
ClearPageUnevictable(page);
@@ -1177,6 +1177,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
prefetchw_prev_lru_page(page, src, flags);
VM_BUG_ON(!PageLRU(page));
+ VM_BUG_ON(PageTail(page));
switch (__isolate_lru_page(page, mode, file)) {
case 0:
@@ -1239,6 +1240,8 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
if (__isolate_lru_page(cursor_page, mode, file) == 0) {
unsigned int isolated_pages;
+ VM_BUG_ON(PageTail(cursor_page));
+
mem_cgroup_lru_del(cursor_page);
list_move(&cursor_page->lru, dst);
isolated_pages = hpage_nr_pages(cursor_page);
--
1.7.3.4
--
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