linux-kernel - Re: [PATCH v3 1/3] 9p: add support for root file systems

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Date:   Mon, 14 Jun 2021 09:09:29 +0800
From:   Changbin Du <changbin.du@...il.com>
To:     kernel test robot <lkp@...el.com>
Cc:     Changbin Du <changbin.du@...il.com>,
        Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        kbuild-all@...ts.01.org, Jonathan Corbet <corbet@....net>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        v9fs-developer@...ts.sourceforge.net,
        "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
Subject: Re: [PATCH v3 1/3] 9p: add support for root file systems

On Mon, Jun 07, 2021 at 09:06:54AM +0800, kernel test robot wrote:
> Hi Changbin,
> 
> I love your patch! Perhaps something to improve:
> 
> [auto build test WARNING on lwn/docs-next]
> [also build test WARNING on linus/master v5.13-rc5 next-20210604]
> [cannot apply to v9fs/for-next]
> [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/Changbin-Du/9p-add-support-for-root-file-systems/20210607-071229
> base:   git://git.lwn.net/linux-2.6 docs-next
> config: arm-allyesconfig (attached as .config)
> compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
> 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://github.com/0day-ci/linux/commit/96098f751038703cc0fda4f018236d240a86930d
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Changbin-Du/9p-add-support-for-root-file-systems/20210607-071229
>         git checkout 96098f751038703cc0fda4f018236d240a86930d
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 
> 
> 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 >>):
> 
> >> fs/9p/v9fsroot.c:53:12: warning: no previous prototype for 'v9fs_root_data' [-Wmissing-prototypes]
>       53 | int __init v9fs_root_data(char **dev, char **opts)
>          |            ^~~~~~~~~~~~~~
>
This just follows the existing rootfs support manner. This function doesn't have
a dedicated header file to place. So I think we can ignore this warning.

> 
> vim +/v9fs_root_data +53 fs/9p/v9fsroot.c
> 
>     52	
>   > 53	int __init v9fs_root_data(char **dev, char **opts)
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org



-- 
Cheers,
Changbin Du