[linux-next:master 6752/7019] fs/xfs/xfs_file.c:1314:21: sparse: sparse: incorrect type in assignment (different base types)

[kernel test robot <lkp@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   6cc11d2a1759275b856e464265823d94aabd5eaf
commit: 97f19d0009777c7f330f559360d6697b7d534ed3 [6752/7019] xfs: support CoW in fsdax mode
config: sparc-randconfig-s031-20220629 (https://download.01.org/0day-ci/archive/20220701/202207011147.1SRZhlxk-lkp@xxxxxxxxx/config)
compiler: sparc-linux-gcc (GCC) 11.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=97f19d0009777c7f330f559360d6697b7d534ed3
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 97f19d0009777c7f330f559360d6697b7d534ed3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc SHELL=/bin/bash fs/xfs/

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


sparse warnings: (new ones prefixed by >>)
   fs/xfs/xfs_file.c:1273:1: sparse: sparse: symbol 'xfs_dax_fault' was not declared. Should it be static?
>> fs/xfs/xfs_file.c:1314:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted vm_fault_t [usertype] ret @@     got int @@
   fs/xfs/xfs_file.c:1314:21: sparse:     expected restricted vm_fault_t [usertype] ret
   fs/xfs/xfs_file.c:1314:21: sparse:     got int

vim +1314 fs/xfs/xfs_file.c

  1282	
  1283	/*
  1284	 * Locking for serialisation of IO during page faults. This results in a lock
  1285	 * ordering of:
  1286	 *
  1287	 * mmap_lock (MM)
  1288	 *   sb_start_pagefault(vfs, freeze)
  1289	 *     invalidate_lock (vfs/XFS_MMAPLOCK - truncate serialisation)
  1290	 *       page_lock (MM)
  1291	 *         i_lock (XFS - extent map serialisation)
  1292	 */
  1293	static vm_fault_t
  1294	__xfs_filemap_fault(
  1295		struct vm_fault		*vmf,
  1296		enum page_entry_size	pe_size,
  1297		bool			write_fault)
  1298	{
  1299		struct inode		*inode = file_inode(vmf->vma->vm_file);
  1300		struct xfs_inode	*ip = XFS_I(inode);
  1301		vm_fault_t		ret;
  1302	
  1303		trace_xfs_filemap_fault(ip, pe_size, write_fault);
  1304	
  1305		if (write_fault) {
  1306			sb_start_pagefault(inode->i_sb);
  1307			file_update_time(vmf->vma->vm_file);
  1308		}
  1309	
  1310		if (IS_DAX(inode)) {
  1311			pfn_t pfn;
  1312	
  1313			xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
> 1314			ret = xfs_dax_fault(vmf, pe_size, write_fault, &pfn);
  1315			if (ret & VM_FAULT_NEEDDSYNC)
  1316				ret = dax_finish_sync_fault(vmf, pe_size, pfn);
  1317			xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
  1318		} else {
  1319			if (write_fault) {
  1320				xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
  1321				ret = iomap_page_mkwrite(vmf,
  1322						&xfs_buffered_write_iomap_ops);
  1323				xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
  1324			} else {
  1325				ret = filemap_fault(vmf);
  1326			}
  1327		}
  1328	
  1329		if (write_fault)
  1330			sb_end_pagefault(inode->i_sb);
  1331		return ret;
  1332	}
  1333	

-- 
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