linux-kernel - [PATCH] mm: No need to check pcp page when free it to buddy

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Message-ID: <1663152820-608-1-git-send-email-zhaoyang.huang@unisoc.com>
Date:   Wed, 14 Sep 2022 18:53:40 +0800
From:   "zhaoyang.huang" <zhaoyang.huang@...soc.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Zhaoyang Huang <huangzhaoyang@...il.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <ke.wang@...soc.com>
Subject: [PATCH] mm: No need to check pcp page when free it to buddy

From: Zhaoyang Huang <zhaoyang.huang@...soc.com>

The pages on pcp list have been checked the validity from each entrance. It is
no need to check it again when free them back to buddy.

Signed-off-by: Zhaoyang Huang <zhaoyang.huang@...soc.com>
---
 mm/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e008a3d..131536e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1445,7 +1445,7 @@ static bool free_pcp_prepare(struct page *page, unsigned int order)
 
 static bool bulkfree_pcp_prepare(struct page *page)
 {
-	return check_free_page(page);
+	return false;
 }
 #endif /* CONFIG_DEBUG_VM */
 
-- 
1.9.1