linux-kernel - [PATCH] mm: use helper function range_in

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Date:   Sat, 19 Feb 2022 10:14:41 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] mm: use helper function range_in_vma()

Use helper function range_in_vma to check if address, address + size are
within the vma range. Minor readability improvement.

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

diff --git a/mm/memory.c b/mm/memory.c
index 13a2fe911bf8..02ddd6660549 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1700,7 +1700,7 @@ static void zap_page_range_single(struct vm_area_struct *vma, unsigned long addr
 void zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
 		unsigned long size)
 {
-	if (address < vma->vm_start || address + size > vma->vm_end ||
+	if (!range_in_vma(vma, address, address + size) ||
 	    		!(vma->vm_flags & VM_PFNMAP))
 		return;
 
-- 
2.23.0