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Subject[PATCH] mm: remove unneeded PageAnon check in restore_exclusive_pte()
Date
When code reaches here, the page must be !PageAnon. There's no need to
check PageAnon again. Remove it.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memory.c b/mm/memory.c
index f671b2dce1fe..d98f89cee3e9 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -753,7 +753,7 @@ 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);

--
2.23.0
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