Re: [PATCH 01/14] iomap: header diet

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

Hi Christoph,

kernel test robot noticed the following build errors:

[auto build test ERROR on brauner-vfs/vfs.all]
[also build test ERROR on xfs-linux/for-next gfs2/for-next linus/master v6.16-rc5 next-20250708]
[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/Christoph-Hellwig/iomap-pass-more-arguments-using-the-iomap-writeback-context/20250708-225155
base:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all
patch link:    https://lore.kernel.org/r/20250708135132.3347932-2-hch%40lst.de
patch subject: [PATCH 01/14] iomap: header diet
config: arc-randconfig-001-20250709 (https://download.01.org/0day-ci/archive/20250709/202507091656.dMTKUTBY-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250709/202507091656.dMTKUTBY-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/202507091656.dMTKUTBY-lkp@intel.com/

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

   fs/iomap/buffered-io.c: In function 'iomap_dirty_folio':
>> fs/iomap/buffered-io.c:642:9: error: implicit declaration of function 'filemap_dirty_folio'; did you mean 'iomap_dirty_folio'? [-Werror=implicit-function-declaration]
     return filemap_dirty_folio(mapping, folio);
            ^~~~~~~~~~~~~~~~~~~
            iomap_dirty_folio
   fs/iomap/buffered-io.c: In function 'iomap_write_iter':
>> fs/iomap/buffered-io.c:930:58: error: 'BDP_ASYNC' undeclared (first use in this function); did you mean 'I_SYNC'?
     unsigned int bdp_flags = (iter->flags & IOMAP_NOWAIT) ? BDP_ASYNC : 0;
                                                             ^~~~~~~~~
                                                             I_SYNC
   fs/iomap/buffered-io.c:930:58: note: each undeclared identifier is reported only once for each function it appears in
>> fs/iomap/buffered-io.c:945:12: error: implicit declaration of function 'balance_dirty_pages_ratelimited_flags' [-Werror=implicit-function-declaration]
      status = balance_dirty_pages_ratelimited_flags(mapping,
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   fs/iomap/buffered-io.c: In function 'iomap_unshare_iter':
>> fs/iomap/buffered-io.c:1309:3: error: implicit declaration of function 'balance_dirty_pages_ratelimited'; did you mean 'pr_alert_ratelimited'? [-Werror=implicit-function-declaration]
      balance_dirty_pages_ratelimited(iter->inode->i_mapping);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      pr_alert_ratelimited
   fs/iomap/buffered-io.c: In function 'iomap_zero_iter':
>> fs/iomap/buffered-io.c:1376:3: error: implicit declaration of function 'folio_mark_accessed'; did you mean 'folio_wait_locked'? [-Werror=implicit-function-declaration]
      folio_mark_accessed(folio);
      ^~~~~~~~~~~~~~~~~~~
      folio_wait_locked
   fs/iomap/buffered-io.c: In function 'iomap_alloc_ioend':
   fs/iomap/buffered-io.c:1624:26: error: implicit declaration of function 'wbc_to_write_flags'; did you mean 'do_pipe_flags'? [-Werror=implicit-function-declaration]
              REQ_OP_WRITE | wbc_to_write_flags(wbc),
                             ^~~~~~~~~~~~~~~~~~
                             do_pipe_flags
   fs/iomap/buffered-io.c:1629:2: error: implicit declaration of function 'wbc_init_bio'; did you mean 'arc_init_IRQ'? [-Werror=implicit-function-declaration]
     wbc_init_bio(wbc, bio);
     ^~~~~~~~~~~~
     arc_init_IRQ
   fs/iomap/buffered-io.c: In function 'iomap_add_to_ioend':
   fs/iomap/buffered-io.c:1748:2: error: implicit declaration of function 'wbc_account_cgroup_owner'; did you mean 'pr_cont_cgroup_name'? [-Werror=implicit-function-declaration]
     wbc_account_cgroup_owner(wbc, folio, len);
     ^~~~~~~~~~~~~~~~~~~~~~~~
     pr_cont_cgroup_name
   fs/iomap/buffered-io.c: In function 'iomap_writepages':
>> fs/iomap/buffered-io.c:1965:18: error: implicit declaration of function 'writeback_iter'; did you mean 'write_lock_irq'? [-Werror=implicit-function-declaration]
     while ((folio = writeback_iter(mapping, wbc, folio, &error)))
                     ^~~~~~~~~~~~~~
                     write_lock_irq
>> fs/iomap/buffered-io.c:1965:16: warning: assignment to 'struct folio *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     while ((folio = writeback_iter(mapping, wbc, folio, &error)))
                   ^
   cc1: some warnings being treated as errors


vim +642 fs/iomap/buffered-io.c

8306a5f5630552 Matthew Wilcox (Oracle  2021-04-28  634) 
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  635) bool iomap_dirty_folio(struct address_space *mapping, struct folio *folio)
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  636) {
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  637) 	struct inode *inode = mapping->host;
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  638) 	size_t len = folio_size(folio);
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  639) 
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  640) 	ifs_alloc(inode, folio, 0);
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  641) 	iomap_set_range_dirty(folio, 0, len);
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10 @642) 	return filemap_dirty_folio(mapping, folio);
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  643) }
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  644) EXPORT_SYMBOL_GPL(iomap_dirty_folio);
4ce02c67972211 Ritesh Harjani (IBM     2023-07-10  645) 

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