[dax:xarray-pagecache 38/41] mm/readahead.c:419:20: error: 'PMD_SHIFT' undeclared; did you mean 'PUD_SHIFT'?

* [dax:xarray-pagecache 38/41] mm/readahead.c:419:20: error: 'PMD_SHIFT' undeclared; did you mean 'PUD_SHIFT'?
@ 2020-02-05 23:36 kbuild test robot
  0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2020-02-05 23:36 UTC (permalink / raw)
  To: kbuild-all

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tree:   git://git.infradead.org/users/willy/linux-dax.git xarray-pagecache
head:   e596140ee1c83600d0daf4ea9cce1d6ad7791378
commit: d6b5def8fda4d982694adb91547f0ee80754ac2b [38/41] mm: Add large page readahead
config: arm-allnoconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout d6b5def8fda4d982694adb91547f0ee80754ac2b
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=arm 

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

All errors (new ones prefixed by >>):

   mm/readahead.c: In function 'page_cache_readahead_order':
>> mm/readahead.c:419:20: error: 'PMD_SHIFT' undeclared (first use in this function); did you mean 'PUD_SHIFT'?
    #define PMD_ORDER (PMD_SHIFT - PAGE_SHIFT)
                       ^
   mm/readahead.c:435:14: note: in expansion of macro 'PMD_ORDER'
     if (order < PMD_ORDER) {
                 ^~~~~~~~~
   mm/readahead.c:419:20: note: each undeclared identifier is reported only once for each function it appears in
    #define PMD_ORDER (PMD_SHIFT - PAGE_SHIFT)
                       ^
   mm/readahead.c:435:14: note: in expansion of macro 'PMD_ORDER'
     if (order < PMD_ORDER) {
                 ^~~~~~~~~

vim +419 mm/readahead.c

   418	
 > 419	#define PMD_ORDER	(PMD_SHIFT - PAGE_SHIFT)
   420	

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org Intel Corporation

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