Re: [PATCH V10 11/12] io_uring/uring_cmd: support leasing device kernel buffer to io_uring

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

Hi Ming,

kernel test robot noticed the following build errors:

[auto build test ERROR on axboe-block/for-next]
[also build test ERROR on next-20241107]
[cannot apply to linus/master v6.12-rc6]
[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/Ming-Lei/io_uring-rsrc-pass-struct-io_ring_ctx-reference-to-rsrc-helpers/20241107-190456
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20241107110149.890530-12-ming.lei%40redhat.com
patch subject: [PATCH V10 11/12] io_uring/uring_cmd: support leasing device kernel buffer to io_uring
config: arc-randconfig-001-20241108 (https://download.01.org/0day-ci/archive/20241108/202411080218.NHuzJ77W-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241108/202411080218.NHuzJ77W-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/202411080218.NHuzJ77W-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from block/fops.c:20:
>> include/linux/io_uring/cmd.h:89:1: error: expected identifier or '(' before '{' token
      89 | {
         | ^
>> include/linux/io_uring/cmd.h:87:19: warning: 'io_uring_cmd_lease_kbuf' declared 'static' but never defined [-Wunused-function]
      87 | static inline int io_uring_cmd_lease_kbuf(struct io_uring_cmd *ioucmd,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~


vim +89 include/linux/io_uring/cmd.h

    62	
    63	int io_uring_cmd_lease_kbuf(struct io_uring_cmd *ioucmd,
    64				    struct io_rsrc_node *node);
    65	#else
    66	static inline int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
    67				      struct iov_iter *iter, void *ioucmd)
    68	{
    69		return -EOPNOTSUPP;
    70	}
    71	static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret,
    72			ssize_t ret2, unsigned issue_flags)
    73	{
    74	}
    75	static inline void __io_uring_cmd_do_in_task(struct io_uring_cmd *ioucmd,
    76				    void (*task_work_cb)(struct io_uring_cmd *, unsigned),
    77				    unsigned flags)
    78	{
    79	}
    80	static inline void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd,
    81			unsigned int issue_flags)
    82	{
    83	}
    84	static inline void io_uring_cmd_issue_blocking(struct io_uring_cmd *ioucmd)
    85	{
    86	}
  > 87	static inline int io_uring_cmd_lease_kbuf(struct io_uring_cmd *ioucmd,
    88						  struct io_rsrc_node *node);
  > 89	{
    90		return -EOPNOTSUPP;
    91	}
    92	#endif
    93	

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