linux-kernel - Re: drivers/block/zram/zram_drv.c:1824:45: warning: unused variable 'zram_wb

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Message-ID: <1761b548-0d05-a5b6-f5c6-8529f8e531a2@kernel.dk>
Date:   Fri, 26 Nov 2021 10:00:27 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     kernel test robot <lkp@...el.com>, Christoph Hellwig <hch@....de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>,
        Johannes Thumshirn <johannes.thumshirn@....com>
Subject: Re: drivers/block/zram/zram_drv.c:1824:45: warning: unused variable
 'zram_wb_devops'

On 11/26/21 1:54 AM, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   a4849f6000e29235a2707f22e39da6b897bb9543
> commit: a8b456d01cd6b37191f14248f3e2bdbe5ce3a89e bdi: remove BDI_CAP_SYNCHRONOUS_IO
> date:   1 year, 2 months ago
> config: x86_64-buildonly-randconfig-r003-20211116 (https://download.01.org/0day-ci/archive/20211126/202111261614.gCJMqcyh-lkp@intel.com/config)
> compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a)
> 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/torvalds/linux.git/commit/?id=a8b456d01cd6b37191f14248f3e2bdbe5ce3a89e
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout a8b456d01cd6b37191f14248f3e2bdbe5ce3a89e
>         # save the config file to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
>>> drivers/block/zram/zram_drv.c:1824:45: warning: unused variable 'zram_wb_devops' [-Wunused-const-variable]
>    static const struct block_device_operations zram_wb_devops = {
>                                                ^
>    1 warning generated.

https://git.kernel.dk/cgit/linux-block/commit/?h=block-5.16&id=d422f40163087408b56290156ba233fc5ada53e4

-- 
Jens Axboe