linux-kernel - [PATCH 2/3] mm/page_ext: use page_ext_data helper in page_table

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Date:   Tue, 18 Jul 2023 22:58:11 +0800
From:   Kemeng Shi <shikemeng@...weicloud.com>
To:     akpm@...ux-foundation.org, pasha.tatashin@...een.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     shikemeng@...weicloud.com
Subject: [PATCH 2/3] mm/page_ext: use page_ext_data helper in page_table_check

use page_ext_data helper in page_table_check to avoid access offset
directly.

Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>
---
 mm/page_table_check.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_table_check.c b/mm/page_table_check.c
index 84c8163984e5..46e77c12c81e 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c
@@ -51,7 +51,7 @@ struct page_ext_operations page_table_check_ops = {
 static struct page_table_check *get_page_table_check(struct page_ext *page_ext)
 {
 	BUG_ON(!page_ext);
-	return (void *)(page_ext) + page_table_check_ops.offset;
+	return page_ext_data(page_ext, &page_table_check_ops);
 }
 
 /*
-- 
2.30.0