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

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Message-Id: <20230718145812.1991717-4-shikemeng@huaweicloud.com>
Date:   Tue, 18 Jul 2023 22:58:12 +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 3/3] mm/page_ext: use page_ext_data helper in page_owner

Use page_ext_data helper in page_owner to avoid access offset directly.

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

diff --git a/mm/page_owner.c b/mm/page_owner.c
index c93baef0148f..4e2723e1b300 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -104,7 +104,7 @@ struct page_ext_operations page_owner_ops = {
 
 static inline struct page_owner *get_page_owner(struct page_ext *page_ext)
 {
-	return (void *)page_ext + page_owner_ops.offset;
+	return page_ext_data(page_ext, &page_owner_ops);
 }
 
 static noinline depot_stack_handle_t save_stack(gfp_t flags)
-- 
2.30.0