Re: [akpm-mm:mm-new 417/421] fs/xfs/xfs_file.c:1977:36: error: incompatible type for argument 1 of 'daxdev_mapping_supported'

[Lorenzo Stoakes <lorenzo.stoakes@oracle.com>]

On Tue, Jan 20, 2026 at 12:30:13PM +0800, kernel test robot wrote:
> Hi Lorenzo,
>
> FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
> head:   e4348a62bb1acacafcdeb149c9363291fae08c0c
> commit: e3900da1b37f861133669d26ae02415f18fa71b9 [417/421] mm: update all remaining mmap_prepare users to use vma_flags_t
> config: parisc-randconfig-001-20260120 (https://download.01.org/0day-ci/archive/20260120/202601201209.cGuf98oB-lkp@intel.com/config)
> compiler: hppa-linux-gcc (GCC) 8.5.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260120/202601201209.cGuf98oB-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/202601201209.cGuf98oB-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>    fs/xfs/xfs_file.c: In function 'xfs_file_mmap_prepare':
> >> fs/xfs/xfs_file.c:1977:36: error: incompatible type for argument 1 of 'daxdev_mapping_supported'
>      if (!daxdev_mapping_supported(desc->vma_flags, file_inode(file),
>                                    ~~~~^~~~~~~~~~~
>    In file included from fs/xfs/xfs_buf.h:14,
>                     from fs/xfs/xfs_linux.h:81,
>                     from fs/xfs/xfs.h:26,
>                     from fs/xfs/xfs_file.c:6:
>    include/linux/dax.h:114:56: note: expected 'vm_flags_t' {aka 'long unsigned int'} but argument is of type 'vma_flags_t' {aka 'struct <anonymous>'}
>     static inline bool daxdev_mapping_supported(vm_flags_t vm_flags,
>                                                 ~~~~~~~~~~~^~~~~~~~
>
>
> vim +/daxdev_mapping_supported +1977 fs/xfs/xfs_file.c
>
>   1964
>   1965	STATIC int
>   1966	xfs_file_mmap_prepare(
>   1967		struct vm_area_desc	*desc)
>   1968	{
>   1969		struct file		*file = desc->file;
>   1970		struct inode		*inode = file_inode(file);
>   1971		struct xfs_buftarg	*target = xfs_inode_buftarg(XFS_I(inode));
>   1972
>   1973		/*
>   1974		 * We don't support synchronous mappings for non-DAX files and
>   1975		 * for DAX files if underneath dax_device is not synchronous.
>   1976		 */
> > 1977		if (!daxdev_mapping_supported(desc->vma_flags, file_inode(file),
>   1978					      target->bt_daxdev))

Same deal as other report, will fix.

>   1979			return -EOPNOTSUPP;
>   1980
>   1981		file_accessed(file);
>   1982		desc->vm_ops = &xfs_file_vm_ops;
>   1983		if (IS_DAX(inode))
>   1984			vma_desc_set_flags(desc, VMA_HUGEPAGE_BIT);
>   1985		return 0;
>   1986	}
>   1987
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki