From: Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: fs/proc/task_mmu.c: remove redundant page validation of pte_page

pte_page() always returns a valid page, so remove the redundant page
validation, as we did in many other places.

Link: https://lkml.kernel.org/r/20220316025947.328276-1-xianting.tian@linux.alibaba.com
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/task_mmu.c |    2 --
 1 file changed, 2 deletions(-)

--- a/fs/proc/task_mmu.c~mm-proc-remove-redundant-page-validation-of-pte_page
+++ a/fs/proc/task_mmu.c
@@ -1878,8 +1878,6 @@ static int gather_hugetlb_stats(pte_t *p
 		return 0;
 
 	page = pte_page(huge_pte);
-	if (!page)
-		return 0;
 
 	md = walk->private;
 	gather_stats(page, md, pte_dirty(huge_pte), 1);
_