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Date: Sun, 6 Feb 2022 23:44:29 +0800
From: kernel test robot <lkp@...el.com>
To: "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [willy-pagecache:for-next 48/75] mm/folio-compat.c:181:2: error:
implicit declaration of function 'folio_mlock'
tree: git://git.infradead.org/users/willy/pagecache for-next
head: b1ccdc7664f5af97629b33fedf382af350edecf4
commit: 8ab767fb367dd2051c64e2b673644af3459223cd [48/75] mm/rmap: Turn page_mlock() into folio_mlock()
config: riscv-allnoconfig (https://download.01.org/0day-ci/archive/20220206/202202062325.WTNXVipS-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6daaf5a44925592c764c59219b0024ee06317028)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
git remote add willy-pagecache git://git.infradead.org/users/willy/pagecache
git fetch --no-tags willy-pagecache for-next
git checkout 8ab767fb367dd2051c64e2b673644af3459223cd
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
In file included from mm/folio-compat.c:7:
In file included from include/linux/migrate.h:6:
In file included from include/linux/mempolicy.h:15:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from mm/folio-compat.c:7:
In file included from include/linux/migrate.h:6:
In file included from include/linux/mempolicy.h:15:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from mm/folio-compat.c:7:
In file included from include/linux/migrate.h:6:
In file included from include/linux/mempolicy.h:15:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
mm/folio-compat.c:169:6: warning: no previous prototype for function 'clear_page_mlock' [-Wmissing-prototypes]
void clear_page_mlock(struct page *page)
^
mm/folio-compat.c:169:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void clear_page_mlock(struct page *page)
^
static
mm/folio-compat.c:174:6: error: redefinition of 'mlock_vma_page'
void mlock_vma_page(struct page *page)
^
mm/internal.h:499:20: note: previous definition is here
static inline void mlock_vma_page(struct page *page) { }
^
mm/folio-compat.c:176:2: error: implicit declaration of function 'mlock_vma_folio' [-Werror,-Wimplicit-function-declaration]
mlock_vma_folio(page_folio(page));
^
mm/folio-compat.c:176:2: note: did you mean 'mlock_vma_page'?
mm/folio-compat.c:174:6: note: 'mlock_vma_page' declared here
void mlock_vma_page(struct page *page)
^
>> mm/folio-compat.c:181:2: error: implicit declaration of function 'folio_mlock' [-Werror,-Wimplicit-function-declaration]
folio_mlock(page_folio(page));
^
mm/folio-compat.c:181:2: note: did you mean 'folio_lock'?
include/linux/pagemap.h:776:20: note: 'folio_lock' declared here
static inline void folio_lock(struct folio *folio)
^
>> mm/folio-compat.c:179:6: warning: no previous prototype for function 'page_mlock' [-Wmissing-prototypes]
void page_mlock(struct page *page)
^
mm/folio-compat.c:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void page_mlock(struct page *page)
^
static
9 warnings and 3 errors generated.
vim +/folio_mlock +181 mm/folio-compat.c
173
174 void mlock_vma_page(struct page *page)
175 {
> 176 mlock_vma_folio(page_folio(page));
177 }
178
> 179 void page_mlock(struct page *page)
180 {
> 181 folio_mlock(page_folio(page));
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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