[linux-next:master 3610/5236] io_uring/io_uring.h:229:27: error: implicit declaration of function 'io_cache_alloc'; did you mean 'kmem_cache_alloc'?

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   8155b4ef3466f0e289e8fcc9e6e62f3f4dceeac2
commit: 694022b01368387cc1ed8485e279dfe27939ee43 [3610/5236] io_uring: Add generic helper to allocate async data
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20241226/202412262106.bjOOaZcE-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241226/202412262106.bjOOaZcE-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/202412262106.bjOOaZcE-lkp@intel.com/

Note: the linux-next/master HEAD 8155b4ef3466f0e289e8fcc9e6e62f3f4dceeac2 builds fine.
      It may have been fixed somewhere.

All errors (new ones prefixed by >>):

   In file included from io_uring/io_uring.c:82:
   io_uring/io_uring.h: In function 'io_uring_alloc_async_data':
>> io_uring/io_uring.h:229:27: error: implicit declaration of function 'io_cache_alloc'; did you mean 'kmem_cache_alloc'? [-Werror=implicit-function-declaration]
     229 |         req->async_data = io_cache_alloc(cache, GFP_KERNEL, init_once);
         |                           ^~~~~~~~~~~~~~
         |                           kmem_cache_alloc
   io_uring/io_uring.h:229:25: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     229 |         req->async_data = io_cache_alloc(cache, GFP_KERNEL, init_once);
         |                         ^
   In file included from io_uring/io_uring.c:104:
   io_uring/alloc_cache.h: At top level:
>> io_uring/alloc_cache.h:33:21: error: conflicting types for 'io_cache_alloc'; have 'void *(struct io_alloc_cache *, gfp_t,  void (*)(void *))' {aka 'void *(struct io_alloc_cache *, unsigned int,  void (*)(void *))'}
      33 | static inline void *io_cache_alloc(struct io_alloc_cache *cache, gfp_t gfp,
         |                     ^~~~~~~~~~~~~~
   io_uring/io_uring.h:229:27: note: previous implicit declaration of 'io_cache_alloc' with type 'int()'
     229 |         req->async_data = io_cache_alloc(cache, GFP_KERNEL, init_once);
         |                           ^~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   In file included from io_uring/opdef.c:11:
   io_uring/io_uring.h: In function 'io_uring_alloc_async_data':
>> io_uring/io_uring.h:229:27: error: implicit declaration of function 'io_cache_alloc'; did you mean 'kmem_cache_alloc'? [-Werror=implicit-function-declaration]
     229 |         req->async_data = io_cache_alloc(cache, GFP_KERNEL, init_once);
         |                           ^~~~~~~~~~~~~~
         |                           kmem_cache_alloc
   io_uring/io_uring.h:229:25: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     229 |         req->async_data = io_cache_alloc(cache, GFP_KERNEL, init_once);
         |                         ^
   cc1: some warnings being treated as errors


vim +229 io_uring/io_uring.h

   224	
   225	static inline void *io_uring_alloc_async_data(struct io_alloc_cache *cache,
   226						      struct io_kiocb *req,
   227						      void (*init_once)(void *obj))
   228	{
 > 229		req->async_data = io_cache_alloc(cache, GFP_KERNEL, init_once);
   230		if (req->async_data)
   231			req->flags |= REQ_F_ASYNC_DATA;
   232		return req->async_data;
   233	}
   234	

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