Re: [PATCH] fs: dax: Adding new return type vm_fault_t

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

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Hi Souptick,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16]
[cannot apply to linus/master v4.17-rc1 next-20180418]
[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/Souptick-Joarder/fs-dax-Adding-new-return-type-vm_fault_t/20180418-152151
config: i386-randconfig-x014-201815 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from include/linux/mempolicy.h:11:0,
                    from include/linux/migrate.h:6,
                    from fs//btrfs/disk-io.c:29:
>> include/linux/dax.h:100:1: error: unknown type name 'vm_fault_t'; did you mean 'vm_flags_t'?
    vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf,
    ^~~~~~~~~~
    vm_flags_t

vim +100 include/linux/dax.h

    95	
    96	ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
    97			const struct iomap_ops *ops);
    98	int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
    99			    pfn_t *pfnp, int *errp, const struct iomap_ops *ops);
 > 100	vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf,
   101			enum page_entry_size pe_size, pfn_t pfn);
   102	int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index);
   103	int dax_invalidate_mapping_entry_sync(struct address_space *mapping,
   104					      pgoff_t index);
   105	

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