Hi "Matthew,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.12-rc2]
[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/Matthew-Wilcox-Oracle/fb_defio-Use-__set_page_dirty_no_writeback/20210307-110930
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
a38fd8748464831584a19438cbb3082b5a2dab15
config: mips-randconfig-r002-20210307 (attached as .config)
compiler: mipsel-linux-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/5e5071e6e61cd1796322f6e365460451457d4d51
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Matthew-Wilcox-Oracle/fb_defio-Use-__set_page_dirty_no_writeback/20210307-110930
        git checkout 5e5071e6e61cd1796322f6e365460451457d4d51
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 
ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__set_page_dirty_no_writeback" 
>> [drivers/video/fbdev/core/fb.ko] undefined!

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

Attachment: .config.gz
Description: application/gzip

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