[kbuild-all] [hch-misc:dax-block-cleanup 3/3] include/linux/dax.h:133:67: warning: declaration of 'struct gendisk' will not be visible outside of this function

tree: git://git.infradead.org/users/hch/misc.git dax-block-cleanup head: f95e4c72e7784a68edcdb95f4211b9636880ff29 commit: f95e4c72e7784a68edcdb95f4211b9636880ff29 [3/3] dax: rework the dax_device <-> gendisk association config: hexagon-randconfig-r041-20211014 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project acb3b187c4c88650a6a717a1bcb234d27d0d7f54) 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 git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc dax-block-cleanup git checkout f95e4c72e7784a68edcdb95f4211b9636880ff29 # 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(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from fs/erofs/super.c:14: static inline int dax_add_host(struct dax_device *dax_dev, struct gendisk *disk) ^ include/linux/dax.h:137:29: warning: declaration of 'struct gendisk' will not be visible outside of this function [-Wvisibility] void dax_remove_host(struct gendisk *disk) ^ void dax_remove_host(struct gendisk *disk) ^ include/linux/dax.h:137:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dax_remove_host(struct gendisk *disk) ^ static 3 warnings generated. -- In file included from fs/erofs/data.c:9: void dax_remove_host(struct gendisk *disk) ^ include/linux/dax.h:137:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dax_remove_host(struct gendisk *disk) ^ static 1 warning generated. vim +133 include/linux/dax.h 123 124 struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev); 125 int dax_writeback_mapping_range(struct address_space *mapping, 126 struct dax_device *dax_dev, struct writeback_control *wbc); 127 128 struct page *dax_layout_busy_page(struct address_space *mapping); 129 struct page *dax_layout_busy_page_range(struct address_space *mapping, loff_t start, loff_t end); 130 dax_entry_t dax_lock_page(struct page *page); 131 void dax_unlock_page(struct page *page, dax_entry_t cookie); 132 #else 134 { 135 return 0; 136 } 138 { 139 } 140 #define generic_fsdax_supported NULL 141 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org