Re: [RFCv2 8/8] ext2: Add direct-io trace points

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

Hi Ritesh,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on tytso-ext4/dev]
[also build test ERROR on xfs-linux/for-next jack-fs/for_next linus/master v6.3-rc6 next-20230411]
[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/Ritesh-Harjani-IBM/ext2-dax-Fix-ext2_setsize-when-len-is-page-aligned/20230411-132421
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
patch link:    https://lore.kernel.org/r/f9825fab612761bee205046ce6e6e4caf25642ee.1681188927.git.ritesh.list%40gmail.com
patch subject: [RFCv2 8/8] ext2: Add direct-io trace points
config: x86_64-randconfig-a002-20230410 (https://download.01.org/0day-ci/archive/20230411/202304112043.6WBCi9Df-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/4fff7c561c76e8ee730b2b5ec288aeeb65ca449d
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Ritesh-Harjani-IBM/ext2-dax-Fix-ext2_setsize-when-len-is-page-aligned/20230411-132421
        git checkout 4fff7c561c76e8ee730b2b5ec288aeeb65ca449d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304112043.6WBCi9Df-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from fs/ext2/trace.c:5:
   In file included from fs/ext2/./trace.h:61:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:419:
>> fs/ext2/./trace.h:29:27: error: implicit declaration of function 'iov_iter_count' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                   __entry->count = iter ? iov_iter_count(iter) : ret;
                                           ^
   In file included from fs/ext2/trace.c:5:
   In file included from fs/ext2/./trace.h:61:
   In file included from include/trace/define_trace.h:103:
   In file included from include/trace/perf.h:75:
>> fs/ext2/./trace.h:29:27: error: implicit declaration of function 'iov_iter_count' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                   __entry->count = iter ? iov_iter_count(iter) : ret;
                                           ^
   2 errors generated.


vim +/iov_iter_count +29 fs/ext2/./trace.h

    10	
    11	DECLARE_EVENT_CLASS(ext2_dio_class,
    12		TP_PROTO(struct kiocb *iocb, struct iov_iter *iter, int ret),
    13		TP_ARGS(iocb, iter, ret),
    14		TP_STRUCT__entry(
    15			__field(dev_t,	dev)
    16			__field(ino_t,	ino)
    17			__field(loff_t, isize)
    18			__field(loff_t, pos)
    19			__field(size_t,	count)
    20			__field(int,	ki_flags)
    21			__field(int,	aio)
    22			__field(int,	ret)
    23		),
    24		TP_fast_assign(
    25			__entry->dev = file_inode(iocb->ki_filp)->i_sb->s_dev;
    26			__entry->ino = file_inode(iocb->ki_filp)->i_ino;
    27			__entry->isize = file_inode(iocb->ki_filp)->i_size;
    28			__entry->pos = iocb->ki_pos;
  > 29			__entry->count = iter ? iov_iter_count(iter) : ret;
    30			__entry->ki_flags = iocb->ki_flags;
    31			__entry->aio = !is_sync_kiocb(iocb);
    32			__entry->ret = iter ? ret : 0;
    33		),
    34		TP_printk("dev %d:%d ino 0x%lx isize 0x%llx pos 0x%llx count %ld flags %s aio %d ret=%d",
    35			  MAJOR(__entry->dev), MINOR(__entry->dev),
    36			  __entry->ino,
    37			  __entry->isize,
    38			  __entry->pos,
    39			  __entry->count,
    40			  __print_flags(__entry->ki_flags, "|", IOCB_STRINGS),
    41			  __entry->aio,
    42			  __entry->ret)
    43	)
    44	

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