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/[email protected] Signed-off-by: Miaohe Lin <[email protected]> Reviewed-by: Muchun Song <[email protected]> Cc: Mike Kravetz <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
fracktal · Sep 12, 2022 · 5e6b1bf · 5e6b1bf
1 parent a9e1eab
commit 5e6b1bf
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
@@ -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