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Subject[goldwynr:iomap 24/33] fs/btrfs/file.c:485:22: error: initialization of 'void (*)(struct inode *, loff_t, unsigned int, struct page *)' {aka 'void (*)(struct inode *, long long int, unsigned int, struct page *)'} from incompatible pointer type 'void
tree:   https://github.com/goldwynr/linux iomap
head: 30c74a8c201365178cae26d0d7aefa120c3245ab
commit: 528f37bbbb59a7cf5ec08a7512eb7f86904e3684 [24/33] btrfs: define iomap_page_ops
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20211230/202112301342.KO6jKDK5-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.2.0
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/goldwynr/linux/commit/528f37bbbb59a7cf5ec08a7512eb7f86904e3684
git remote add goldwynr https://github.com/goldwynr/linux
git fetch --no-tags goldwynr iomap
git checkout 528f37bbbb59a7cf5ec08a7512eb7f86904e3684
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash fs/btrfs/

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

Note: the goldwynr/iomap HEAD 30c74a8c201365178cae26d0d7aefa120c3245ab builds fine.
It only hurts bisectability.

All errors (new ones prefixed by >>):

>> fs/btrfs/file.c:485:22: error: initialization of 'void (*)(struct inode *, loff_t, unsigned int, struct page *)' {aka 'void (*)(struct inode *, long long int, unsigned int, struct page *)'} from incompatible pointer type 'void (*)(struct inode *, loff_t, unsigned int, struct page *, struct iomap *)' {aka 'void (*)(struct inode *, long long int, unsigned int, struct page *, struct iomap *)'} [-Werror=incompatible-pointer-types]
485 | .page_done = btrfs_page_done,
| ^~~~~~~~~~~~~~~
fs/btrfs/file.c:485:22: note: (near initialization for 'btrfs_iomap_page_ops.page_done')
fs/btrfs/file.c: In function 'btrfs_buffered_iomap_end':
fs/btrfs/file.c:1715:29: error: 'bi' redeclared as different kind of symbol
1715 | struct btrfs_iomap *bi = iomap->private;
| ^~
fs/btrfs/file.c:1712:69: note: previous definition of 'bi' with type 'struct btrfs_iomap *'
1712 | loff_t length, ssize_t written, struct btrfs_iomap *bi)
| ~~~~~~~~~~~~~~~~~~~~^~
fs/btrfs/file.c:1715:34: error: 'iomap' undeclared (first use in this function)
1715 | struct btrfs_iomap *bi = iomap->private;
| ^~~~~
fs/btrfs/file.c:1715:34: note: each undeclared identifier is reported only once for each function it appears in
At top level:
fs/btrfs/file.c:484:36: warning: 'btrfs_iomap_page_ops' defined but not used [-Wunused-const-variable=]
484 | static const struct iomap_page_ops btrfs_iomap_page_ops = {
| ^~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors


vim +485 fs/btrfs/file.c

483
484 static const struct iomap_page_ops btrfs_iomap_page_ops = {
> 485 .page_done = btrfs_page_done,
486 };
487

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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