Re: [PATCH v3 2/3] block: io-uring: add READV_PI/WRITEV_PI operations

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

Hi Alexander,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on linus/master v6.0-rc4 next-20220908]
[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/Alexander-V-Buev/implement-direct-IO-with-integrity/20220909-143807
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220909/202209091641.ayJsNmnv-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/eda3c42ce63fd33731304cc2ec9a8e1704270690
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Alexander-V-Buev/implement-direct-IO-with-integrity/20220909-143807
        git checkout eda3c42ce63fd33731304cc2ec9a8e1704270690
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash

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

All warnings (new ones prefixed by >>):

   io_uring/rw_pi.c:181:5: warning: no previous prototype for 'kiocb_done' [-Wmissing-prototypes]
     181 | int kiocb_done(struct io_kiocb *req, ssize_t ret,
         |     ^~~~~~~~~~
   io_uring/rw_pi.c: In function 'io_import_iovecs_pi':
>> io_uring/rw_pi.c:266:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     266 |         uvec = (struct iovec *)rw->addr;
         |                ^


vim +266 io_uring/rw_pi.c

   255	
   256	
   257	static inline int
   258	io_import_iovecs_pi(int io_dir, struct io_kiocb *req, struct iovec **iovec,
   259				struct io_rw_state *s_data, struct __io_rw_pi_state *s_pi)
   260	{
   261		struct io_rw_pi *rw = io_kiocb_to_cmd(req, struct io_rw_pi);
   262		struct iovec __user *uvec;
   263		ssize_t ret;
   264	
   265		/* data */
 > 266		uvec = (struct iovec *)rw->addr;
   267		iovec[DATA] = s_data->fast_iov;
   268		ret = __import_iovec(io_dir, uvec, rw->nr_segs,
   269					UIO_FASTIOV, iovec + DATA,
   270					&s_data->iter, req->ctx->compat);
   271	
   272		if (unlikely(ret <= 0))
   273			return (ret) ? ret : -EINVAL;
   274		/* pi */
   275		uvec = (struct iovec *)rw->kiocb.private;
   276		iovec[PI] = s_pi->fast_iov;
   277		ret = __import_iovec(io_dir, uvec, rw->nr_pi_segs,
   278					UIO_FASTIOV_PI, iovec + PI,
   279					&s_pi->iter, req->ctx->compat);
   280		if (unlikely(ret <= 0)) {
   281			if (iovec[DATA])
   282				kfree(iovec[DATA]);
   283			return (ret) ? ret : -EINVAL;
   284		}
   285	
   286		/* save states */
   287		io_rw_pi_state_iter_save(s_data, s_pi);
   288	
   289		return 0;
   290	}
   291	

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