Re: [PATCH V4 12/12] scsi: replace sdev->device_busy with sbitmap

[Ming Lei <ming.lei@redhat.com>]

Hello Kashyap & Sumanesh,

On Mon, Nov 16, 2020 at 07:49:31PM +0800, kernel test robot wrote:
> Hi Ming,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on block/for-next]
> [also build test ERROR on mkp-scsi/for-next scsi/for-next v5.10-rc4 next-20201116]
> [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/Ming-Lei/blk-mq-scsi-tracking-device-queue-depth-via-sbitmap/20201116-171449
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
> config: powerpc64-randconfig-r026-20201116 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c044709b8fbea2a9a375e4173a6bd735f6866c0c)
> 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
>         # install powerpc64 cross compiling tool for clang build
>         # apt-get install binutils-powerpc64-linux-gnu
>         # https://github.com/0day-ci/linux/commit/cc286ae987be50d7b8e152cc80a5ccaa8682e3ff
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Ming-Lei/blk-mq-scsi-tracking-device-queue-depth-via-sbitmap/20201116-171449
>         git checkout cc286ae987be50d7b8e152cc80a5ccaa8682e3ff
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 
> 
> 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/scsi/megaraid/megaraid_sas_fusion.c:365:41: error: no member named 'device_busy' in 'struct scsi_device'
>            sdev_busy = atomic_read(&scmd->device->device_busy);

This new reference to sdev->device_busy is added by recent shared host
tag patch, and according to the comment, you may have planed to convert into
one megaraid internal counter.

        /* TBD - if sml remove device_busy in future, driver
         * should track counter in internal structure.
         */

So can you post one patch? And I am happy to fold it into this series.

Thanks,
Ming