linux-kernel - Re: [axboe-block:for-5.16/block 189/189] block/fops.c:530:23: error: implicit declaration of function 'bdev_nr

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Date:   Fri, 5 Nov 2021 08:33:08 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [axboe-block:for-5.16/block 189/189] block/fops.c:530:23: error:
 implicit declaration of function 'bdev_nr_bytes'

On 11/5/21 8:01 AM, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-5.16/block
> head:   d4e76b1ad0065477119b544fd93c2f03550ef548
> commit: d4e76b1ad0065477119b544fd93c2f03550ef548 [189/189] block: use new bdev_nr_bytes() helper for blkdev_{read,write}_iter()
> config: ia64-defconfig (attached as .config)
> compiler: ia64-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://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=d4e76b1ad0065477119b544fd93c2f03550ef548
>         git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
>         git fetch --no-tags axboe-block for-5.16/block
>         git checkout d4e76b1ad0065477119b544fd93c2f03550ef548
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
>    block/fops.c: In function 'blkdev_write_iter':
>>> block/fops.c:530:23: error: implicit declaration of function 'bdev_nr_bytes' [-Werror=implicit-function-declaration]
>      530 |         loff_t size = bdev_nr_bytes(bdev);
>          |                       ^~~~~~~~~~~~~
>    cc1: some warnings being treated as errors

Doh, applied it to the wrong branch. Moved it now, should be fine in the
current state.

-- 
Jens Axboe