linux-kernel - [sbates130272-p2pmem:p2pdma_user_cmb_v4 18/24] block/bio.c:787:7: error: implicit declaration of function 'zone_device_pages_are

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Date:   Fri, 1 Oct 2021 13:38:24 +0800
From:   kernel test robot <lkp@...el.com>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [sbates130272-p2pmem:p2pdma_user_cmb_v4 18/24] block/bio.c:787:7:
 error: implicit declaration of function 'zone_device_pages_are_mergeable'

tree:   https://github.com/sbates130272/linux-p2pmem.git p2pdma_user_cmb_v4
head:   fafffd8dc69edfad4ffca8e67bd6520f3a1a004f
commit: 2f33a0989872f1edd3353c300c33f6671f6d0d3c [18/24] block: add check when merging zone device pages
config: hexagon-randconfig-r045-20211001 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 962e503cc8bc411f7523cc393acae8aae425b1c4)
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
        # https://github.com/sbates130272/linux-p2pmem/commit/2f33a0989872f1edd3353c300c33f6671f6d0d3c
        git remote add sbates130272-p2pmem https://github.com/sbates130272/linux-p2pmem.git
        git fetch --no-tags sbates130272-p2pmem p2pdma_user_cmb_v4
        git checkout 2f33a0989872f1edd3353c300c33f6671f6d0d3c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> block/bio.c:787:7: error: implicit declaration of function 'zone_device_pages_are_mergeable' [-Werror,-Wimplicit-function-declaration]
           if (!zone_device_pages_are_mergeable(bv->bv_page, page))
                ^
   block/bio.c:787:7: note: did you mean 'zone_device_pages_are_mergable'?
   include/linux/mm.h:1164:20: note: 'zone_device_pages_are_mergable' declared here
   static inline bool zone_device_pages_are_mergable(const struct page *a,
                      ^
   1 error generated.


vim +/zone_device_pages_are_mergeable +787 block/bio.c

   774	
   775	static inline bool page_is_mergeable(const struct bio_vec *bv,
   776			struct page *page, unsigned int len, unsigned int off,
   777			bool *same_page)
   778	{
   779		size_t bv_end = bv->bv_offset + bv->bv_len;
   780		phys_addr_t vec_end_addr = page_to_phys(bv->bv_page) + bv_end - 1;
   781		phys_addr_t page_addr = page_to_phys(page);
   782	
   783		if (vec_end_addr + 1 != page_addr + off)
   784			return false;
   785		if (xen_domain() && !xen_biovec_phys_mergeable(bv, page))
   786			return false;
 > 787		if (!zone_device_pages_are_mergeable(bv->bv_page, page))
   788			return false;
   789	
   790		*same_page = ((vec_end_addr & PAGE_MASK) == page_addr);
   791		if (*same_page)
   792			return true;
   793		return (bv->bv_page + bv_end / PAGE_SIZE) == (page + off / PAGE_SIZE);
   794	}
   795	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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