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Subject[PATCH 08 of 66] fix bad_page to show the real reason the page is bad
From: Andrea Arcangeli <>

page_count shows the count of the head page, but the actual check is done on
the tail page, so show what is really being checked.

Signed-off-by: Andrea Arcangeli <>
Acked-by: Rik van Riel <>
Acked-by: Mel Gorman <>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5564,7 +5564,7 @@ void dump_page(struct page *page)
"page:%p count:%d mapcount:%d mapping:%p index:%#lx\n",
- page, page_count(page), page_mapcount(page),
+ page, atomic_read(&page->_count), page_mapcount(page),
page->mapping, page->index);

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