From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>,
linux-mm@kvack.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCH] mm: make sure isolate_lru_page() is never called for tail page
Date: Wed, 16 Dec 2015 16:29:30 +0200 [thread overview]
Message-ID: <1450276170-140679-1-git-send-email-kirill.shutemov@linux.intel.com> (raw)
The VM_BUG_ON_PAGE() would catch such cases if any still exists.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
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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next reply other threads:[~2015-12-16 14:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-16 14:29 Kirill A. Shutemov [this message]
2015-12-16 14:47 ` Michal Hocko
2015-12-22 15:57 ` Vlastimil Babka
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