linux-kernel - Re: [PATCH] fuse: add support for copy_file

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Date:   Wed, 27 Jun 2018 16:20:09 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Niels de Vos <ndevos@...hat.com>
Cc:     kbuild-all@...org, Miklos Szeredi <miklos@...redi.hu>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Niels de Vos <ndevos@...hat.com>
Subject: Re: [PATCH] fuse: add support for copy_file_range()

Hi Niels,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on fuse/for-next]
[also build test ERROR on v4.18-rc2 next-20180626]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Niels-de-Vos/fuse-add-support-for-copy_file_range/20180627-155404
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git for-next
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

>> fs//fuse/file.c:3092:21: error: initialization of 'ssize_t (*)(struct file *, loff_t,  struct file *, loff_t,  size_t,  unsigned int)' {aka 'int (*)(struct file *, long long int,  struct file *, long long int,  unsigned int,  unsigned int)'} from incompatible pointer type 'long int (*)(struct file *, loff_t,  struct file *, loff_t,  size_t,  unsigned int)' {aka 'long int (*)(struct file *, long long int,  struct file *, long long int,  unsigned int,  unsigned int)'} [-Werror=incompatible-pointer-types]
     .copy_file_range = fuse_copy_file_range,
                        ^~~~~~~~~~~~~~~~~~~~
   fs//fuse/file.c:3092:21: note: (near initialization for 'fuse_file_operations.copy_file_range')
   cc1: some warnings being treated as errors

vim +3092 fs//fuse/file.c

  3075	
  3076	static const struct file_operations fuse_file_operations = {
  3077		.llseek		= fuse_file_llseek,
  3078		.read_iter	= fuse_file_read_iter,
  3079		.write_iter	= fuse_file_write_iter,
  3080		.mmap		= fuse_file_mmap,
  3081		.open		= fuse_open,
  3082		.flush		= fuse_flush,
  3083		.release	= fuse_release,
  3084		.fsync		= fuse_fsync,
  3085		.lock		= fuse_file_lock,
  3086		.flock		= fuse_file_flock,
  3087		.splice_read	= generic_file_splice_read,
  3088		.unlocked_ioctl	= fuse_file_ioctl,
  3089		.compat_ioctl	= fuse_file_compat_ioctl,
  3090		.poll		= fuse_file_poll,
  3091		.fallocate	= fuse_file_fallocate,
> 3092		.copy_file_range = fuse_copy_file_range,
  3093	};
  3094	

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