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    SubjectRe: [PATCH v11 7/8] xfs: Implement ->notify_failure() for XFS
    Hi Shiyang,

    Thank you for the patch! Yet something to improve:

    [auto build test ERROR on xfs-linux/for-next]
    [also build test ERROR on linux/master]
    [cannot apply to hnaz-mm/master linus/master v5.17-rc5 next-20220225]
    [If your patch is applied to the wrong git tree, kindly drop us a note.
    And when submitting patch, we suggest to use '--base' as documented in
    https://git-scm.com/docs/git-format-patch]

    url: https://github.com/0day-ci/linux/commits/Shiyang-Ruan/fsdax-introduce-fs-query-to-support-reflink/20220227-200849
    base: https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git for-next
    config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20220227/202202272203.U7VlQY3B-lkp@intel.com/config)
    compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
    reproduce (this is a W=1 build):
    # https://github.com/0day-ci/linux/commit/9f4bfbd2bae60e9f172e0b7332b2af32aa5baa87
    git remote add linux-review https://github.com/0day-ci/linux
    git fetch --no-tags linux-review Shiyang-Ruan/fsdax-introduce-fs-query-to-support-reflink/20220227-200849
    git checkout 9f4bfbd2bae60e9f172e0b7332b2af32aa5baa87
    # save the config file to linux build tree
    mkdir build_dir
    make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

    All errors (new ones prefixed by >>):

    ld: fs/xfs/xfs_buf.o: in function `xfs_free_buftarg':
    >> fs/xfs/xfs_buf.c:1897: undefined reference to `dax_unregister_holder'
    ld: fs/xfs/xfs_notify_failure.o: in function `xfs_dax_notify_failure':
    >> fs/xfs/xfs_notify_failure.c:187: undefined reference to `dax_holder'


    vim +1897 fs/xfs/xfs_buf.c

    1885
    1886 void
    1887 xfs_free_buftarg(
    1888 struct xfs_buftarg *btp)
    1889 {
    1890 unregister_shrinker(&btp->bt_shrinker);
    1891 ASSERT(percpu_counter_sum(&btp->bt_io_count) == 0);
    1892 percpu_counter_destroy(&btp->bt_io_count);
    1893 list_lru_destroy(&btp->bt_lru);
    1894
    1895 blkdev_issue_flush(btp->bt_bdev);
    1896 if (btp->bt_daxdev)
    > 1897 dax_unregister_holder(btp->bt_daxdev, btp->bt_mount);
    1898 fs_put_dax(btp->bt_daxdev);
    1899
    1900 kmem_free(btp);
    1901 }
    1902

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

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