[PATCH for-next v6 1/5] io_uring: add io_uring_cmd_import_fixed

[kernel test robot]

Hi Kanchan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on linus/master v6.0-rc4 next-20220908]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Kanchan-Joshi/io_uring-add-io_uring_cmd_import_fixed/20220909-033508
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20220909/202209091034.1uWUabFo-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/0b61830b28b6a720a99d34aba08d3d466fe516ec
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kanchan-Joshi/io_uring-add-io_uring_cmd_import_fixed/20220909-033508
        git checkout 0b61830b28b6a720a99d34aba08d3d466fe516ec
        # 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=i386 SHELL=/bin/bash net/unix/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

   In file included from net/unix/scm.c:11:
>> include/linux/io_uring.h:65:5: warning: no previous prototype for function 'io_uring_cmd_import_fixed' [-Wmissing-prototypes]
   int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
       ^
   include/linux/io_uring.h:65:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
   ^
   static 
   1 warning generated.


vim +/io_uring_cmd_import_fixed +65 include/linux/io_uring.h

    46	
    47	static inline void io_uring_files_cancel(void)
    48	{
    49		if (current->io_uring) {
    50			io_uring_unreg_ringfd();
    51			__io_uring_cancel(false);
    52		}
    53	}
    54	static inline void io_uring_task_cancel(void)
    55	{
    56		if (current->io_uring)
    57			__io_uring_cancel(true);
    58	}
    59	static inline void io_uring_free(struct task_struct *tsk)
    60	{
    61		if (tsk->io_uring)
    62			__io_uring_free(tsk);
    63	}
    64	#else
  > 65	int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
    66				      struct iov_iter *iter, void *ioucmd)
    67	{
    68		return -EOPNOTSUPP;
    69	}
    70	static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret,
    71			ssize_t ret2)
    72	{
    73	}
    74	static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd,
    75				void (*task_work_cb)(struct io_uring_cmd *))
    76	{
    77	}
    78	static inline struct sock *io_uring_get_socket(struct file *file)
    79	{
    80		return NULL;
    81	}
    82	static inline void io_uring_task_cancel(void)
    83	{
    84	}
    85	static inline void io_uring_files_cancel(void)
    86	{
    87	}
    88	static inline void io_uring_free(struct task_struct *tsk)
    89	{
    90	}
    91	static inline const char *io_uring_get_opcode(u8 opcode)
    92	{
    93		return "";
    94	}
    95	#endif
    96	

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