Hi Dave,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on xfs-linux/for-next]
[also build test WARNING on v5.13-rc3 next-20210526]
[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/Dave-Chinner/xfs-bunmapi-needs-updating-for-deferred-freeing/20210527-125525
base:   https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git for-next
config: arc-allyesconfig (attached as .config)
compiler: arceb-elf-gcc (GCC) 9.3.0
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
        # https://github.com/0day-ci/linux/commit/79189c83717c1c3653f6870ab803b4f1eb5d6159
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Dave-Chinner/xfs-bunmapi-needs-updating-for-deferred-freeing/20210527-125525
        git checkout 79189c83717c1c3653f6870ab803b4f1eb5d6159
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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

All warnings (new ones prefixed by >>):

>> fs/xfs/libxfs/xfs_trans_resv.c:91:1: warning: no previous prototype for 'xfs_allocfree_extent_res' [-Wmissing-prototypes]
      91 | xfs_allocfree_extent_res(
         | ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/xfs_allocfree_extent_res +91 fs/xfs/libxfs/xfs_trans_resv.c

    81	
    82	/*
    83	 * Log reservation required to add or remove a single extent to the free space
    84	 * btrees.  This requires modifying:
    85	 *
    86	 * the agf header: 1 sector
    87	 * the agfl header: 1 sector
    88	 * the allocation btrees: 2 trees * (max depth - 1) * block size
    89	 */
    90	uint
  > 91	xfs_allocfree_extent_res(
    92		struct xfs_mount *mp)
    93	{
    94		return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
    95		       xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
    96					XFS_FSB_TO_B(mp, 1));
    97	}
    98	

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