It is better to keep page mapping info when free_huge_page() hit the VM_BUG_ON_PAGE,
so we can get more infomation from the coredump for further analysis.
Signed-off-by: Yongkai Wu <nic_w@xxxxxxx>
---
mm/hugetlb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c007fb5..ba693bb 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1248,10 +1248,11 @@ void free_huge_page(struct page *page)
(struct hugepage_subpool *)page_private(page);
bool restore_reserve;
+ VM_BUG_ON_PAGE(page_count(page), page);
+ VM_BUG_ON_PAGE(page_mapcount(page), page);
+
set_page_private(page, 0);
page->mapping = NULL;
- VM_BUG_ON_PAGE(page_count(page), page);
- VM_BUG_ON_PAGE(page_mapcount(page), page);
restore_reserve = PagePrivate(page);
ClearPagePrivate(page);
--
1.8.3.1
