[axboe-block:io_uring-msg-ring.1 7/9] io_uring/io_uring.c:585:6: warning: no previous prototype for function 'io_cq_unlock_post'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git io_uring-msg-ring.1
head:   9c799821c57ae3670fef01abd6746b33685c07d6
commit: 7de82d2e1d5af1210e8f631b7d994957c602a8d4 [7/9] hack
config: riscv-defconfig (https://download.01.org/0day-ci/archive/20240606/202406061201.htRM9t09-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project d7d2d4f53fc79b4b58e8d8d08151b577c3699d4a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240606/202406061201.htRM9t09-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406061201.htRM9t09-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from io_uring/io_uring.c:45:
   In file included from include/linux/syscalls.h:93:
   In file included from include/trace/syscall.h:7:
   In file included from include/linux/trace_events.h:6:
   In file included from include/linux/ring_buffer.h:5:
   In file included from include/linux/mm.h:2253:
   include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     514 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> io_uring/io_uring.c:585:6: warning: no previous prototype for function 'io_cq_unlock_post' [-Wmissing-prototypes]
     585 | void io_cq_unlock_post(struct io_ring_ctx *ctx)
         |      ^
   io_uring/io_uring.c:585:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     585 | void io_cq_unlock_post(struct io_ring_ctx *ctx)
         | ^
         | static 
   2 warnings generated.


vim +/io_cq_unlock_post +585 io_uring/io_uring.c

   584	
 > 585	void io_cq_unlock_post(struct io_ring_ctx *ctx)
   586		__releases(ctx->completion_lock)
   587	{
   588		io_commit_cqring(ctx);
   589		spin_unlock(&ctx->completion_lock);
   590		io_cqring_wake(ctx);
   591		io_commit_cqring_flush(ctx);
   592	}
   593	

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