Re: [PATCH 4/5] io_uring: support nonblock try for splicing from pipe to pipe

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Hi Hao,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on d8271bf021438f468dab3cd84fe5279b5bbcead8]

url:    https://github.com/intel-lab-lkp/linux/commits/Hao-Xu/support-nonblock-submission-for-splice-pipe-to-pipe/20220607-161605
base:   d8271bf021438f468dab3cd84fe5279b5bbcead8
config: mips-buildonly-randconfig-r001-20220607 (https://download.01.org/0day-ci/archive/20220608/202206080550.7nXmrsiv-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b92436efcb7813fc481b30f2593a4907568d917a)
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 mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/96683840c3f19b77a536a259094d24e0cd93ebc0
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Hao-Xu/support-nonblock-submission-for-splice-pipe-to-pipe/20220607-161605
        git checkout 96683840c3f19b77a536a259094d24e0cd93ebc0
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> io_uring/splice.c:91:6: warning: no previous prototype for function 'io_splice_support_nowait' [-Wmissing-prototypes]
   bool io_splice_support_nowait(struct file *in, struct file *out)
        ^
   io_uring/splice.c:91:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool io_splice_support_nowait(struct file *in, struct file *out)
   ^
   static 
   1 warning generated.


vim +/io_splice_support_nowait +91 io_uring/splice.c

    90	
  > 91	bool io_splice_support_nowait(struct file *in, struct file *out)
    92	{
    93		if (get_pipe_info(in, true) && get_pipe_info(out, true))
    94			return true;
    95	
    96		return false;
    97	}
    98	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



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