[mcgrof:blk-iobuf-pool-v5 8/9] drivers/nvme/host/ioctl.c:668:8: error: call to undeclared function 'blk_uring_cmd_alloc_iobuf'; ISO C99 and later do not support implicit function declarations

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git blk-iobuf-pool-v5
head:   de80bacbf04a137715357b6a2948d9f29a18d990
commit: 7b61092440add7fbe6d72ae7ede11080113e193e [8/9] nvme: allocate pool-backed fixed buffers through namespace char devices
config: hexagon-randconfig-001-20260728 (https://download.01.org/0day-ci/archive/20260728/[email protected]/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 890b11e09e45e9d8b29f2f94f22052be3934e757)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260728/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

>> drivers/nvme/host/ioctl.c:668:8: error: call to undeclared function 'blk_uring_cmd_alloc_iobuf'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     668 |         ret = blk_uring_cmd_alloc_iobuf(ioucmd, pool, buf_index, len,
         |               ^
   1 error generated.


vim +/blk_uring_cmd_alloc_iobuf +668 drivers/nvme/host/ioctl.c

   649	
   650	static int nvme_ns_alloc_iobuf(struct nvme_ns *ns, struct io_uring_cmd *ioucmd,
   651				       unsigned int issue_flags)
   652	{
   653		const struct io_uring_sqe *sqe = ioucmd->sqe;
   654		struct blk_iobuf_pool *pool;
   655		u64 buf_index, len;
   656		int ret;
   657	
   658		if (READ_ONCE(sqe->ioprio) || READ_ONCE(sqe->__pad1) ||
   659		    READ_ONCE(sqe->len) || READ_ONCE(sqe->rw_flags) ||
   660		    READ_ONCE(sqe->file_index))
   661			return -EINVAL;
   662		buf_index = READ_ONCE(sqe->addr);
   663		len = READ_ONCE(sqe->addr3);
   664	
   665		pool = blk_queue_get_iobuf_pool(ns->queue);
   666		if (!pool)
   667			return -EOPNOTSUPP;
 > 668		ret = blk_uring_cmd_alloc_iobuf(ioucmd, pool, buf_index, len,
   669					       issue_flags);
   670		blk_iobuf_pool_put(pool);
   671		return ret;
   672	}
   673	

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