Hi Filipe,

[auto build test ERROR on v4.4-rc4]
[also build test ERROR on next-20151208]
[cannot apply to btrfs/next]

url:    
https://github.com/0day-ci/linux/commits/fdmanana-kernel-org/Btrfs-fix-leaking-of-ordered-extents-after-direct-IO-write-error/20151209-182927
config: x86_64-randconfig-x008-12090811 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   fs/btrfs/inode.c: In function 'btrfs_direct_IO':
>> fs/btrfs/inode.c:8528:5: error: implicit declaration of function 
>> 'btrfs_endio_direct_write_update_ordered' 
>> [-Werror=implicit-function-declaration]
        btrfs_endio_direct_write_update_ordered(inode,
        ^
   cc1: some warnings being treated as errors

vim +/btrfs_endio_direct_write_update_ordered +8528 fs/btrfs/inode.c

  8522                           * without submitting corresponding bios for 
them, so
  8523                           * cleanup them up to avoid other tasks getting 
them
  8524                           * and waiting for them to complete forever.
  8525                           */
  8526                          if (dio_data.unsubmitted_oe_range_start <
  8527                              dio_data.unsubmitted_oe_range_end)
> 8528                                  
> btrfs_endio_direct_write_update_ordered(inode,
  8529                                          
dio_data.unsubmitted_oe_range_start,
  8530                                          
dio_data.unsubmitted_oe_range_end -
  8531                                          
dio_data.unsubmitted_oe_range_start,

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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