diff mbox series

[v2,09/10] hugetlb: remove meaningless BUG_ON(huge_pte_none())

Message ID 20220901120030.63318-10-linmiaohe@huawei.com (mailing list archive)
State New
Headers show
Series A few cleanup patches for hugetlb | expand

Commit Message

Miaohe Lin Sept. 1, 2022, noon UTC 
When code reaches here, invalid page would have been accessed if huge pte
is none. So this BUG_ON(huge_pte_none()) is meaningless. Remove it.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
---
 mm/hugetlb.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 2ba45addcdeb..9178ab521c74 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5379,7 +5379,6 @@  static vm_fault_t hugetlb_wp(struct mm_struct *mm, struct vm_area_struct *vma,
 			u32 hash;
 
 			put_page(old_page);
-			BUG_ON(huge_pte_none(pte));
 			/*
 			 * Drop hugetlb_fault_mutex and vma_lock before
 			 * unmapping.  unmapping needs to hold vma_lock