From: SeongJae Park <sjpark@amazon.de>

Hello Robot,

On Mon, 9 Aug 2021 11:11:33 +0800 kernel test robot <lkp@intel.com> wrote:

> 
> [-- Attachment #1: Type: text/plain, Size: 14246 bytes --]
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   7999516e20bd9bb5d1f7351cbd05ca529a3a8d60
> commit: 73b831d4a3c725ed2b4ee15ef9f789b97f5679eb [5973/6030] mm/idle_page_tracking: Make PG_idle reusable
> config: nds32-randconfig-p001-20210809 (attached as .config)
> compiler: nds32le-linux-gcc (GCC) 10.3.0
> 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=73b831d4a3c725ed2b4ee15ef9f789b97f5679eb
>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>         git fetch --no-tags linux-next master
>         git checkout 73b831d4a3c725ed2b4ee15ef9f789b97f5679eb
>         # save the attached .config to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=nds32 SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All errors (new ones prefixed by >>):
> 
>    In file included from mm/migrate.c:47:
>    include/linux/page_idle.h: In function 'page_is_young':
> >> include/linux/page_idle.h:55:18: error: 'PAGE_EXT_YOUNG' undeclared (first use in this function)
>       55 |  return test_bit(PAGE_EXT_YOUNG, &page_ext->flags);
>          |                  ^~~~~~~~~~~~~~

Thank you for the report!

Similar issue was reported a few days ago and I made a fix:
https://lore.kernel.org/linux-fsdevel/20210806095153.6444-1-sj38.park@gmail.com/

With your reproducer, I also confirmed the patch fixes the issue.


Thanks,
SeongJae Park

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