[kbuild-all] [hch-misc:dax-block-cleanup 18/29] fs/ext4/inode.c:3784:24: error: implicit declaration of function 'dax_zero_range'; did you mean 'iomap_zero_range'?

tree: git://git.infradead.org/users/hch/misc.git dax-block-cleanup head: 66907b1fedc7f04eadf903bb484c55901b96298c commit: c33e2c44d0f96e5849d131ad472e7ed58bd6f23b [18/29] fsdax: decouple zeroing from the iomap buffered I/O code config: ia64-buildonly-randconfig-r002-20211123 (https://download.01.org/0day-ci/archive/20211124/202111240110.kx7cgC4E-lk...) compiler: ia64-linux-gcc (GCC) 11.2.0 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 c33e2c44d0f96e5849d131ad472e7ed58bd6f23b # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/ia64/include/asm/pgtable.h:153, from include/linux/pgtable.h:6, from arch/ia64/include/asm/uaccess.h:40, from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from fs/ext4/inode.c:22: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 127 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ fs/ext4/inode.c: In function 'ext4_block_zero_page_range': 3784 | return dax_zero_range(inode, from, length, NULL, | ^~~~~~~~~~~~~~ | iomap_zero_range cc1: some warnings being treated as errors -- In file included from arch/ia64/include/asm/pgtable.h:153, from include/linux/pgtable.h:6, from include/linux/mm.h:33, from fs/xfs/kmem.h:11, from fs/xfs/xfs_linux.h:24, from fs/xfs/xfs.h:22, from fs/xfs/xfs_iomap.c:7: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 127 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ fs/xfs/xfs_iomap.c: In function 'xfs_zero_range': 1325 | return dax_zero_range(inode, pos, len, did_zero, | ^~~~~~~~~~~~~~ | xfs_zero_range fs/xfs/xfs_iomap.c: In function 'xfs_truncate_page': 1340 | return dax_truncate_page(inode, pos, did_zero, | ^~~~~~~~~~~~~~~~~ | xfs_truncate_page cc1: some warnings being treated as errors vim +3784 fs/ext4/inode.c 3760 3761 /* 3762 * ext4_block_zero_page_range() zeros out a mapping of length 'length' 3763 * starting from file offset 'from'. The range to be zero'd must 3764 * be contained with in one block. If the specified range exceeds 3765 * the end of the block it will be shortened to end of the block 3766 * that corresponds to 'from' 3767 */ 3768 static int ext4_block_zero_page_range(handle_t *handle, 3769 struct address_space *mapping, loff_t from, loff_t length) 3770 { 3771 struct inode *inode = mapping->host; 3772 unsigned offset = from & (PAGE_SIZE-1); 3773 unsigned blocksize = inode->i_sb->s_blocksize; 3774 unsigned max = blocksize - (offset & (blocksize - 1)); 3775 3776 /* 3777 * correct length if it does not fall between 3778 * 'from' and the end of the block 3779 */ 3780 if (length > max || length < 0) 3781 length = max; 3782 3783 if (IS_DAX(inode)) { 3785 &ext4_iomap_ops); 3786 } 3787 return __ext4_block_zero_page_range(handle, mapping, from, length); 3788 } 3789 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org