linux-kernel - [PATCH 1/3] mm/page_ext: remove unused return value of offline_page

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Date:   Fri, 14 Jul 2023 19:47:47 +0800
From:   Kemeng Shi <shikemeng@...weicloud.com>
To:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     shikemeng@...weicloud.com
Subject: [PATCH 1/3] mm/page_ext: remove unused return value of offline_page_ext

offline_page_ext always returns 0 and no caller checks the return value.
Just remove unused return value of offline_page_ext.

Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>
---
 mm/page_ext.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/page_ext.c b/mm/page_ext.c
index dc1626be458b..096451df1c87 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -430,7 +430,7 @@ static int __meminit online_page_ext(unsigned long start_pfn,
 	return -ENOMEM;
 }
 
-static int __meminit offline_page_ext(unsigned long start_pfn,
+static void __meminit offline_page_ext(unsigned long start_pfn,
 				unsigned long nr_pages)
 {
 	unsigned long start, end, pfn;
@@ -454,8 +454,6 @@ static int __meminit offline_page_ext(unsigned long start_pfn,
 
 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)
 		__free_page_ext(pfn);
-	return 0;
-
 }
 
 static int __meminit page_ext_callback(struct notifier_block *self,
-- 
2.30.0