Re: [PATCH] f2fs: fix to convert log type to segment data type correctly

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

Hi Chao,

kernel test robot noticed the following build errors:

[auto build test ERROR on jaegeuk-f2fs/dev-test]
[also build test ERROR on jaegeuk-f2fs/dev linus/master v6.12-rc3 next-20241018]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Chao-Yu/f2fs-fix-to-convert-log-type-to-segment-data-type-correctly/20241018-172401
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git dev-test
patch link:    https://lore.kernel.org/r/20241018092200.2792472-1-chao%40kernel.org
patch subject: [PATCH] f2fs: fix to convert log type to segment data type correctly
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241019/202410192028.vIwx2fbN-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241019/202410192028.vIwx2fbN-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410192028.vIwx2fbN-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

>> fs/f2fs/segment.c:3818:38: warning: 'enum log_type' declared inside parameter list will not be visible outside of this definition or declaration
    3818 | static int log_type_to_seg_type(enum log_type type)
         |                                      ^~~~~~~~
>> fs/f2fs/segment.c:3818:47: error: parameter 1 ('type') has incomplete type
    3818 | static int log_type_to_seg_type(enum log_type type)
         |                                 ~~~~~~~~~~~~~~^~~~
>> fs/f2fs/segment.c:3818:12: error: function declaration isn't a prototype [-Werror=strict-prototypes]
    3818 | static int log_type_to_seg_type(enum log_type type)
         |            ^~~~~~~~~~~~~~~~~~~~
   fs/f2fs/segment.c: In function 'do_write_page':
>> fs/f2fs/segment.c:3843:14: error: variable 'type' has initializer but incomplete type
    3843 |         enum log_type type = __get_segment_type(fio);
         |              ^~~~~~~~
>> fs/f2fs/segment.c:3843:23: error: storage size of 'type' isn't known
    3843 |         enum log_type type = __get_segment_type(fio);
         |                       ^~~~
>> fs/f2fs/segment.c:3843:23: warning: unused variable 'type' [-Wunused-variable]
   cc1: some warnings being treated as errors


vim +3818 fs/f2fs/segment.c

  3817	
> 3818	static int log_type_to_seg_type(enum log_type type)
  3819	{
  3820		int seg_type = CURSEG_COLD_DATA;
  3821	
  3822		switch (type) {
  3823		case CURSEG_HOT_DATA:
  3824		case CURSEG_WARM_DATA:
  3825		case CURSEG_COLD_DATA:
  3826		case CURSEG_HOT_NODE:
  3827		case CURSEG_WARM_NODE:
  3828		case CURSEG_COLD_NODE:
  3829			seg_type = (int)type;
  3830			break;
  3831		case CURSEG_COLD_DATA_PINNED:
  3832		case CURSEG_ALL_DATA_ATGC:
  3833			seg_type = CURSEG_COLD_DATA;
  3834			break;
  3835		default:
  3836			break;
  3837		}
  3838		return seg_type;
  3839	}
  3840	
  3841	static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
  3842	{
> 3843		enum log_type type = __get_segment_type(fio);
  3844		int seg_type = log_type_to_seg_type(type);
  3845		bool keep_order = (f2fs_lfs_mode(fio->sbi) &&
  3846					seg_type == CURSEG_COLD_DATA);
  3847	
  3848		if (keep_order)
  3849			f2fs_down_read(&fio->sbi->io_order_lock);
  3850	
  3851		if (f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
  3852				&fio->new_blkaddr, sum, type, fio)) {
  3853			if (fscrypt_inode_uses_fs_layer_crypto(fio->page->mapping->host))
  3854				fscrypt_finalize_bounce_page(&fio->encrypted_page);
  3855			end_page_writeback(fio->page);
  3856			if (f2fs_in_warm_node_list(fio->sbi, fio->page))
  3857				f2fs_del_fsync_node_entry(fio->sbi, fio->page);
  3858			goto out;
  3859		}
  3860		if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO)
  3861			f2fs_invalidate_internal_cache(fio->sbi, fio->old_blkaddr);
  3862	
  3863		/* writeout dirty page into bdev */
  3864		f2fs_submit_page_write(fio);
  3865	
  3866		f2fs_update_device_state(fio->sbi, fio->ino, fio->new_blkaddr, 1);
  3867	out:
  3868		if (keep_order)
  3869			f2fs_up_read(&fio->sbi->io_order_lock);
  3870	}
  3871	

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