Re: [PATCH 4/5] io_uring: add a helper for poll clean

[kernel test robot <lkp@intel.com>]

Hi Hao,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on f2e030dd7aaea5a937a2547dc980fab418fbc5e7]

url:    https://github.com/intel-lab-lkp/linux/commits/Hao-Xu/fast-poll-multishot-mode/20220506-150750
base:   f2e030dd7aaea5a937a2547dc980fab418fbc5e7
config: m68k-randconfig-r025-20220506 (https://download.01.org/0day-ci/archive/20220506/202205061844.HxnOWhwG-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.3.0
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/intel-lab-lkp/linux/commit/acb232e81643bd097278ebdc17038e6f280e7212
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Hao-Xu/fast-poll-multishot-mode/20220506-150750
        git checkout acb232e81643bd097278ebdc17038e6f280e7212
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash

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 >>):

   fs/io_uring.c: In function '__io_submit_flush_completions':
   fs/io_uring.c:2785:40: warning: variable 'prev' set but not used [-Wunused-but-set-variable]
    2785 |         struct io_wq_work_node *node, *prev;
         |                                        ^~~~
   fs/io_uring.c: In function 'io_apoll_task_func':
>> fs/io_uring.c:6067:9: error: implicit declaration of function '__io_poll_clean'; did you mean '__io_fill_cqe'? [-Werror=implicit-function-declaration]
    6067 |         __io_poll_clean(req);
         |         ^~~~~~~~~~~~~~~
         |         __io_fill_cqe
   cc1: some warnings being treated as errors


vim +6067 fs/io_uring.c

  6058	
  6059	static void io_apoll_task_func(struct io_kiocb *req, bool *locked)
  6060	{
  6061		int ret;
  6062	
  6063		ret = io_poll_check_events(req, locked);
  6064		if (ret > 0)
  6065			return;
  6066	
> 6067		__io_poll_clean(req);
  6068	
  6069		if (!ret)
  6070			io_req_task_submit(req, locked);
  6071		else
  6072			io_req_complete_failed(req, ret);
  6073	}
  6074	

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