linux-kernel - [PATCH] mm: fix build warning about kernel_physical_mapping

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Message-ID: <1366182958-21892-1-git-send-email-wangyijing@huawei.com>
Date:	Wed, 17 Apr 2013 15:15:58 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	Hanjun Guo <guohanjun@...wei.com>, <jiang.liu@...wei.com>,
	Yijing Wang <wangyijing@...wei.com>,
	Tang Chen <tangchen@...fujitsu.com>,
	Wen Congyang <wency@...fujitsu.com>
Subject: [PATCH] mm: fix build warning about kernel_physical_mapping_remove()

If CONFIG_MEMORY_HOTREMOVE is not set, a build warning about
"warning: ‘kernel_physical_mapping_remove’ defined but not used"
report.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
Cc: Tang Chen <tangchen@...fujitsu.com>
Cc: Wen Congyang <wency@...fujitsu.com>
---
 arch/x86/mm/init_64.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 474e28f..dafdeb2 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1019,6 +1019,7 @@ void __ref vmemmap_free(struct page *memmap, unsigned long nr_pages)
 	remove_pagetable(start, end, false);
 }
 
+#ifdef CONFIG_MEMORY_HOTREMOVE
 static void __meminit
 kernel_physical_mapping_remove(unsigned long start, unsigned long end)
 {
@@ -1028,7 +1029,6 @@ kernel_physical_mapping_remove(unsigned long start, unsigned long end)
 	remove_pagetable(start, end, true);
 }
 
-#ifdef CONFIG_MEMORY_HOTREMOVE
 int __ref arch_remove_memory(u64 start, u64 size)
 {
 	unsigned long start_pfn = start >> PAGE_SHIFT;
-- 
1.7.1


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