linux-kernel - [PATCH 3/7] mm: khugepaged: remove the redundant anon vma check

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Message-Id: <20220520211605.51473-4-shy828301@gmail.com>
Date:   Fri, 20 May 2022 14:16:01 -0700
From:   Yang Shi <shy828301@...il.com>
To:     vbabka@...e.cz, kirill.shutemov@...ux.intel.com,
        akpm@...ux-foundation.org
Cc:     shy828301@...il.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] mm: khugepaged: remove the redundant anon vma check

The hugepage_vma_check() already checked it, so remove the redundant
check.

Signed-off-by: Yang Shi <shy828301@...il.com>
---
 mm/khugepaged.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 5bdb30a76f05..4fe1dd3d8ef4 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -966,9 +966,6 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address,
 		return SCAN_ADDRESS_RANGE;
 	if (!hugepage_vma_check(vma, vma->vm_flags))
 		return SCAN_VMA_CHECK;
-	/* Anon VMA expected */
-	if (!vma->anon_vma || !vma_is_anonymous(vma))
-		return SCAN_VMA_CHECK;
 	return 0;
 }
 
-- 
2.26.3