Commit 5e6b1bf1 authored by Miaohe Lin's avatar Miaohe Lin Committed by Andrew Morton
Browse files

hugetlb: remove meaningless BUG_ON(huge_pte_none()) 

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.

Link: https://lkml.kernel.org/r/20220901120030.63318-10-linmiaohe@huawei.com


Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarMuchun Song <songmuchun@bytedance.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent a9e1eab2

mm/hugetlb.c

+0 −1
Original line number Diff line number Diff line
@@ -5345,7 +5345,6 @@ 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 i_mmap_rwsem before

			 * unmapping.  unmapping needs to hold i_mmap_rwsem