fs/btrfs/zoned.c:1697: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   42eb8fdac2fc5d62392dcfcf0253753e821a97b0
commit: afba2bc036b0ed983bef6bd7c00c827e97d1ba31 btrfs: zoned: implement active zone tracking
date:   3 weeks ago
config: m68k-randconfig-r004-20211109 (attached as .config)
compiler: m68k-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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=afba2bc036b0ed983bef6bd7c00c827e97d1ba31
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout afba2bc036b0ed983bef6bd7c00c827e97d1ba31
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=m68k 

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/btrfs/zoned.c:1697: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Activate block group and underlying device zones


vim +1697 fs/btrfs/zoned.c

  1695	
  1696	/**
> 1697	 * Activate block group and underlying device zones
  1698	 *
  1699	 * @block_group: the block group to activate
  1700	 *
  1701	 * Return: true on success, false otherwise
  1702	 */
  1703	bool btrfs_zone_activate(struct btrfs_block_group *block_group)
  1704	{
  1705		struct btrfs_fs_info *fs_info = block_group->fs_info;
  1706		struct map_lookup *map;
  1707		struct btrfs_device *device;
  1708		u64 physical;
  1709		bool ret;
  1710	
  1711		if (!btrfs_is_zoned(block_group->fs_info))
  1712			return true;
  1713	
  1714		map = block_group->physical_map;
  1715		/* Currently support SINGLE profile only */
  1716		ASSERT(map->num_stripes == 1);
  1717		device = map->stripes[0].dev;
  1718		physical = map->stripes[0].physical;
  1719	
  1720		if (device->zone_info->max_active_zones == 0)
  1721			return true;
  1722	
  1723		spin_lock(&block_group->lock);
  1724	
  1725		if (block_group->zone_is_active) {
  1726			ret = true;
  1727			goto out_unlock;
  1728		}
  1729	
  1730		/* No space left */
  1731		if (block_group->alloc_offset == block_group->zone_capacity) {
  1732			ret = false;
  1733			goto out_unlock;
  1734		}
  1735	
  1736		if (!btrfs_dev_set_active_zone(device, physical)) {
  1737			/* Cannot activate the zone */
  1738			ret = false;
  1739			goto out_unlock;
  1740		}
  1741	
  1742		/* Successfully activated all the zones */
  1743		block_group->zone_is_active = 1;
  1744	
  1745		spin_unlock(&block_group->lock);
  1746	
  1747		/* For the active block group list */
  1748		btrfs_get_block_group(block_group);
  1749	
  1750		spin_lock(&fs_info->zone_active_bgs_lock);
  1751		ASSERT(list_empty(&block_group->active_bg_list));
  1752		list_add_tail(&block_group->active_bg_list, &fs_info->zone_active_bgs);
  1753		spin_unlock(&fs_info->zone_active_bgs_lock);
  1754	
  1755		return true;
  1756	
  1757	out_unlock:
  1758		spin_unlock(&block_group->lock);
  1759		return ret;
  1760	}
  1761	

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

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