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mm: remove unneeded PageAnon check in restore_exclusive_pte()

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When code reaches here, the page must be !PageAnon.  There's no need to
check PageAnon again.  Remove it.

Link: https://lkml.kernel.org/r/20220716081816.10752-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-07-16 16:18:16 +08:00 committed by akpm
parent 9b7a4039d6
commit 4d8ff64097
1 changed files with 1 additions and 1 deletions
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2
mm/memory.c
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@ -744,7 +744,7 @@ static void restore_exclusive_pte(struct vm_area_struct *vma,
* Currently device exclusive access only supports anonymous
* memory so the entry shouldn't point to a filebacked page.
*/
WARN_ON_ONCE(!PageAnon(page));
WARN_ON_ONCE(1);
set_pte_at(vma->vm_mm, address, ptep, pte);