[dhowells-fs:fscache-netfs-lib 13/26] fs/cachefiles/rdwr2.c:424:5: warning: no previous prototype for 'cachefiles_begin_cache_operation'

[dhowells-fs:fscache-netfs-lib 13/26] fs/cachefiles/rdwr2.c:424:5: warning: no previous prototype for 'cachefiles_begin_cache_operation'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-netfs-lib
head:   72ff7b8b0c53f453dcc5ec36195fda98dfbf605c
commit: dcc00081cea56b447e3edf8fff764128fae7a687 [13/26] fscache, cachefiles: Add alternate API to use kiocb for read/write to cache
config: arc-allyesconfig (attached as .config)
compiler: arceb-elf-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://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?id=dcc00081cea56b447e3edf8fff764128fae7a687
        git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
        git fetch --no-tags dhowells-fs fscache-netfs-lib
        git checkout dcc00081cea56b447e3edf8fff764128fae7a687
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> fs/cachefiles/rdwr2.c:424:5: warning: no previous prototype for 'cachefiles_begin_cache_operation' [-Wmissing-prototypes]
     424 | int cachefiles_begin_cache_operation(struct netfs_read_request *rreq,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/cachefiles_begin_cache_operation +424 fs/cachefiles/rdwr2.c

   420	
   421	/*
   422	 * Open the cache file when beginning a cache operation.
   423	 */
 > 424	int cachefiles_begin_cache_operation(struct netfs_read_request *rreq,

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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