Hi Ross,

[auto build test WARNING on next-20160120]
[cannot apply to v4.4-rc8 v4.4-rc7 v4.4-rc6 v4.4]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:    
https://github.com/0day-ci/linux/commits/Ross-Zwisler/DAX-fsync-msync-fixes/20160121-114036
config: tile-allyesconfig (attached as .config)
reproduce:
        wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=tile 

All warnings (new ones prefixed by >>):

>> fs/dax.c:330:0: warning: "PMD_INDEX" redefined [enabled by default]
   arch/tile/include/asm/pgtable_64.h:35:0: note: this is the location of the 
previous definition
>> fs/dax.c:330:0: warning: "PMD_INDEX" redefined [enabled by default]
   arch/tile/include/asm/pgtable_64.h:35:0: note: this is the location of the 
previous definition

vim +/PMD_INDEX +330 fs/dax.c

   314                  .sector = to_sector(bh, inode),
   315                  .size = bh->b_size,
   316          };
   317          struct block_device *bdev = bh->b_bdev;
   318          void *vto;
   319  
   320          if (dax_map_atomic(bdev, &dax) < 0)
   321                  return PTR_ERR(dax.addr);
   322          vto = kmap_atomic(to);
   323          copy_user_page(vto, (void __force *)dax.addr, vaddr, to);
   324          kunmap_atomic(vto);
   325          dax_unmap_atomic(bdev, &dax);
   326          return 0;
   327  }
   328  
   329  #define NO_SECTOR -1
 > 330  #define PMD_INDEX(page_index) (page_index & (PMD_MASK >> 
 > PAGE_CACHE_SHIFT))
   331  
   332  static int dax_radix_entry(struct address_space *mapping, pgoff_t index,
   333                  sector_t sector, bool pmd_entry, bool dirty)
   334  {
   335          struct radix_tree_root *page_tree = &mapping->page_tree;
   336          pgoff_t pmd_index = PMD_INDEX(index);
   337          int type, error = 0;
   338          void *entry;

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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