[ammarfaizi2-block:dhowells/linux-fs/netfs-linked-list 29/57] include/linux/page-flags.h:788:20: error: passing 'const struct page *' to parameter of type 'struct page *' discards qualifiers

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-linked-list
head:   c19d336b7f0c53bd31e73f6d7d6c1524f0df55b8
commit: f951c9604853872cf088bb3dbf7d49e3f96b090d [29/57] mm: Make some folio function arguments const
config: mips-randconfig-r033-20220610 (https://download.01.org/0day-ci/archive/20220611/202206111140.r2gAQWTY-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ff4abe755279a3a47cc416ef80dbc900d9a98a19)
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 mips cross compiling tool for clang build
        # apt-get install binutils-mipsel-linux-gnu
        # https://github.com/ammarfaizi2/linux-block/commit/f951c9604853872cf088bb3dbf7d49e3f96b090d
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-linked-list
        git checkout f951c9604853872cf088bb3dbf7d49e3f96b090d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips prepare

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from arch/mips/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:13:
   In file included from include/linux/list_lru.h:14:
   In file included from include/linux/xarray.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:22:
>> include/linux/page-flags.h:788:20: error: passing 'const struct page *' to parameter of type 'struct page *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           PF_POISONED_CHECK(page);
                             ^~~~
   include/linux/page-flags.h:370:41: note: expanded from macro 'PF_POISONED_CHECK'
                   VM_BUG_ON_PGFLAGS(PagePoisoned(page), page);            \
                                                         ^~~~
   include/linux/mmdebug.h:94:60: note: expanded from macro 'VM_BUG_ON_PGFLAGS'
   #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
                                                              ^~~~
   include/linux/mmdebug.h:21:14: note: expanded from macro 'VM_BUG_ON_PAGE'
                           dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
                                     ^~~~
   include/linux/mmdebug.h:12:29: note: passing argument to parameter 'page' here
   void dump_page(struct page *page, const char *reason);
                               ^
   arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for function 'output_ptreg_defines' [-Wmissing-prototypes]
   void output_ptreg_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_ptreg_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for function 'output_task_defines' [-Wmissing-prototypes]
   void output_task_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_task_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for function 'output_thread_info_defines' [-Wmissing-prototypes]
   void output_thread_info_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:92:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_info_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for function 'output_thread_defines' [-Wmissing-prototypes]
   void output_thread_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:108:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for function 'output_mm_defines' [-Wmissing-prototypes]
   void output_mm_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_mm_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:218:6: warning: no previous prototype for function 'output_sc_defines' [-Wmissing-prototypes]
   void output_sc_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:218:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_sc_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:253:6: warning: no previous prototype for function 'output_signal_defined' [-Wmissing-prototypes]
   void output_signal_defined(void)
        ^
   arch/mips/kernel/asm-offsets.c:253:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_signal_defined(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:332:6: warning: no previous prototype for function 'output_pm_defines' [-Wmissing-prototypes]
   void output_pm_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:332:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_pm_defines(void)
   ^
   static 
   8 warnings and 1 error generated.
   make[2]: *** [scripts/Makefile.build:117: arch/mips/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1196: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +788 include/linux/page-flags.h

e7d324850bfcb3 Muchun Song   2022-03-22  785  
f951c960485387 David Howells 2022-06-08  786  static __always_inline int PageHead(const struct page *page)
e7d324850bfcb3 Muchun Song   2022-03-22  787  {
e7d324850bfcb3 Muchun Song   2022-03-22 @788  	PF_POISONED_CHECK(page);
e7d324850bfcb3 Muchun Song   2022-03-22  789  	return test_bit(PG_head, &page->flags) && !page_is_fake_head(page);
e7d324850bfcb3 Muchun Song   2022-03-22  790  }
e7d324850bfcb3 Muchun Song   2022-03-22  791  

:::::: The code at line 788 was first introduced by commit
:::::: e7d324850bfcb30df563d144c0363cc44595277d mm: hugetlb: free the 2nd vmemmap page associated with each HugeTLB page

:::::: TO: Muchun Song <songmuchun@bytedance.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

-- 
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