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* [axboe-block:rw_iter 101/105] arch/x86/mm/tlb.c:1317:24: error: implicit declaration of function 'iov_iter_count'
@ 2024-04-06  6:19 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-04-06  6:19 UTC (permalink / raw
  To: Jens Axboe; +Cc: oe-kbuild-all

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git rw_iter
head:   bb4803260393a54d3b254c2abfe121ab89cce776
commit: 3965099c682e2bdbd4e5f6ef81beef00806350a4 [101/105] arch/x86: convert to read/write iterators
config: i386-allnoconfig (https://download.01.org/0day-ci/archive/20240406/202404061417.ofqdy8UV-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240406/202404061417.ofqdy8UV-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/202404061417.ofqdy8UV-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/x86/mm/tlb.c: In function 'tlbflush_write_file':
>> arch/x86/mm/tlb.c:1317:24: error: implicit declaration of function 'iov_iter_count' [-Werror=implicit-function-declaration]
    1317 |         size_t count = iov_iter_count(from);
         |                        ^~~~~~~~~~~~~~
>> arch/x86/mm/tlb.c:1323:14: error: implicit declaration of function 'copy_from_iter_full'; did you mean 'copy_from_user_nofault'? [-Werror=implicit-function-declaration]
    1323 |         if (!copy_from_iter_full(buf, len, from))
         |              ^~~~~~~~~~~~~~~~~~~
         |              copy_from_user_nofault
   cc1: some warnings being treated as errors


vim +/iov_iter_count +1317 arch/x86/mm/tlb.c

  1314	
  1315	static ssize_t tlbflush_write_file(struct kiocb *iocb, struct iov_iter *from)
  1316	{
> 1317		size_t count = iov_iter_count(from);
  1318		char buf[32];
  1319		ssize_t len;
  1320		int ceiling;
  1321	
  1322		len = min(count, sizeof(buf) - 1);
> 1323		if (!copy_from_iter_full(buf, len, from))
  1324			return -EFAULT;
  1325	
  1326		buf[len] = '\0';
  1327		if (kstrtoint(buf, 0, &ceiling))
  1328			return -EINVAL;
  1329	
  1330		if (ceiling < 0)
  1331			return -EINVAL;
  1332	
  1333		tlb_single_page_flush_ceiling = ceiling;
  1334		return count;
  1335	}
  1336	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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