linux-kernel - [PATCH] mm/hugetlb: use helper huge_page_size() to simplify the hugetlb_vm_op

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Message-ID: <20210205092209.16024-1-linmiaohe@huawei.com>
Date:   Fri, 5 Feb 2021 04:22:09 -0500
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <mike.kravetz@...cle.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] mm/hugetlb: use helper huge_page_size() to simplify the hugetlb_vm_op_pagesize()

We can use helper huge_page_size() to get the size of the pages allocated
when backing a VMA directly to make the code more simplified.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/hugetlb.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 18628f8dbfb0..3eea2a34d9f5 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3647,9 +3647,7 @@ static int hugetlb_vm_op_split(struct vm_area_struct *vma, unsigned long addr)
 
 static unsigned long hugetlb_vm_op_pagesize(struct vm_area_struct *vma)
 {
-	struct hstate *hstate = hstate_vma(vma);
-
-	return 1UL << huge_page_shift(hstate);
+	return huge_page_size(hstate_vma(vma));
 }
 
 /*
-- 
2.19.1