Received-SPF: pass (google.com: domain of linux-kernel+bounces-131512-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: Huacai Chen <chenhuacai@loongson.cn>
To: Andrew Morton <akpm@linux-foundation.org>,
	Huacai Chen <chenhuacai@kernel.org>
Cc: loongarch@lists.linux.dev,
	linux-mm@kvack.org,
	Xuefeng Li <lixuefeng@loongson.cn>,
	Guo Ren <guoren@kernel.org>,
	Xuerui Wang <kernel@xen0n.name>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	linux-kernel@vger.kernel.org,
	loongson-kernel@lists.loongnix.cn,
	Huacai Chen <chenhuacai@loongson.cn>
Subject: [PATCH 1/3] mm: Move lowmem_page_address() a little later
Date: Thu,  4 Apr 2024 21:36:34 +0800
Message-ID: <20240404133642.971583-2-chenhuacai@loongson.cn>
In-Reply-To: <20240404133642.971583-1-chenhuacai@loongson.cn>
References: <20240404133642.971583-1-chenhuacai@loongson.cn>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

LoongArch will override page_to_virt() which use page_address() in the
KFENCE case (by defining WANT_PAGE_VIRTUAL/HASHED_PAGE_VIRTUAL). So move
lowmem_page_address() a little later to avoid such build errors:

error: implicit declaration of function 'page_address'.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---
 include/linux/mm.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0436b919f1c7..7b0ee64225de 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2207,11 +2207,6 @@ static inline int arch_make_folio_accessible(struct folio *folio)
  */
 #include <linux/vmstat.h>
 
-static __always_inline void *lowmem_page_address(const struct page *page)
-{
-	return page_to_virt(page);
-}
-
 #if defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL)
 #define HASHED_PAGE_VIRTUAL
 #endif
@@ -2234,6 +2229,11 @@ void set_page_address(struct page *page, void *virtual);
 void page_address_init(void);
 #endif
 
+static __always_inline void *lowmem_page_address(const struct page *page)
+{
+	return page_to_virt(page);
+}
+
 #if !defined(HASHED_PAGE_VIRTUAL) && !defined(WANT_PAGE_VIRTUAL)
 #define page_address(page) lowmem_page_address(page)
 #define set_page_address(page, address)  do { } while(0)
-- 
2.43.0