linux-kernel - [PATCH v3 07/16] mm/huge_memory: use helper function vma_lookup in split_huge_pages

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Message-ID: <20220704132201.14611-8-linmiaohe@huawei.com>
Date:   Mon, 4 Jul 2022 21:21:52 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <shy828301@...il.com>, <willy@...radead.org>, <zokeefe@...gle.com>,
        <songmuchun@...edance.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH v3 07/16] mm/huge_memory: use helper function vma_lookup in split_huge_pages_pid

Use helper function vma_lookup to lookup the needed vma to simplify the
code. Minor readability improvement.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/huge_memory.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index f2856cfac900..5f5123130b28 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3045,10 +3045,10 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
 	 * table filled with PTE-mapped THPs, each of which is distinct.
 	 */
 	for (addr = vaddr_start; addr < vaddr_end; addr += PAGE_SIZE) {
-		struct vm_area_struct *vma = find_vma(mm, addr);
+		struct vm_area_struct *vma = vma_lookup(mm, addr);
 		struct page *page;
 
-		if (!vma || addr < vma->vm_start)
+		if (!vma)
 			break;
 
 		/* skip special VMA and hugetlb VMA */
-- 
2.23.0