Re: [PATCH V3] raid1: ensure write behind bio has less than BIO_MAX_VECS sectors

[Guoqing Jiang <guoqing.jiang@linux.dev>]

Hi,

Thanks for the report!

On 8/23/21 8:19 PM, kernel test robot wrote:
> Hi Guoqing,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on song-md/md-next]
> [also build test ERROR on v5.14-rc7 next-20210820]
> [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/Guoqing-Jiang/raid1-ensure-write-behind-bio-has-less-than-BIO_MAX_VECS-sectors/20210823-154653
> base:   git://git.kernel.org/pub/scm/linux/kernel/git/song/md.git md-next
> config: sh-allmodconfig (attached as .config)
> compiler: sh4-linux-gcc (GCC) 11.2.0
> 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/302a06a55fac4a9fb10f57dc96f6a618f3e853b4
>          git remote add linux-review https://github.com/0day-ci/linux
>          git fetch --no-tags linux-review Guoqing-Jiang/raid1-ensure-write-behind-bio-has-less-than-BIO_MAX_VECS-sectors/20210823-154653
>          git checkout 302a06a55fac4a9fb10f57dc96f6a618f3e853b4
>          # save the attached .config to linux build tree
>          mkdir build_dir
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sh SHELL=/bin/bash drivers/md/
>
> 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 >>):
>
>     drivers/md/raid1.c: In function 'raid1_write_request':
>>> drivers/md/raid1.c:1393:44: error: 'mirror' undeclared (first use in this function); did you mean 'md_error'?
>      1393 |                 if (test_bit(WriteMostly, &mirror->rdev->flags))
>           |                                            ^~~~~~
>           |                                            md_error

Oops, will fix it.

> drivers/md/raid1.c:1477:52: error: 'PAGE_SECTORS' undeclared (first use in this function)
>      1477 |                                     BIO_MAX_VECS * PAGE_SECTORS);
>           |                                                    ^~~~~~~~~~~~

This patch is supposed to be merged by block tree due to dependency.

Thanks,
Guoqing