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hugetlb: remove meaningless BUG_ON(huge_pte_none())

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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: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-09-01 20:00:29 +08:00 • committed by Andrew Morton
parent a9e1eab241
commit 5e6b1bf1b5
1 changed files with 0 additions and 1 deletions
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1
mm/hugetlb.c
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@ -5345,7 +5345,6 @@ retry_avoidcopy:
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