Re: [PATCH 1/2] mm, thp: introduce dedicated transparent huge page allocation interfaces

[kbuild test robot]

Hi Changbin,

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.14-rc5 next-20171017]
[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/changbin-du-intel-com/mm-thp-introduce-dedicated-transparent-huge-page-allocation-interfaces/20171018-230128
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: i386-randconfig-x001-201742 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/balloon_compaction.h:48:0,
                    from drivers/virtio/virtio_balloon.c:29:
   include/linux/migrate.h: In function 'new_page_nodemask':
>> include/linux/migrate.h:49:10: error: implicit declaration of function 
>> 'alloc_transhuge_page_nodemask' [-Werror=implicit-function-declaration]
      return alloc_transhuge_page_nodemask(gfp_mask | GFP_TRANSHUGE,
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/migrate.h:49:10: warning: return makes pointer from integer 
>> without a cast [-Wint-conversion]
      return alloc_transhuge_page_nodemask(gfp_mask | GFP_TRANSHUGE,
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        preferred_nid, nodemask);
        ~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/alloc_transhuge_page_nodemask +49 include/linux/migrate.h

    33  
    34  static inline struct page *new_page_nodemask(struct page *page,
    35                                  int preferred_nid, nodemask_t *nodemask)
    36  {
    37          gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL;
    38          unsigned int order = 0;
    39          struct page *new_page = NULL;
    40  
    41          if (PageHuge(page))
    42                  return 
alloc_huge_page_nodemask(page_hstate(compound_head(page)),
    43                                  preferred_nid, nodemask);
    44  
    45          if (PageHighMem(page) || (zone_idx(page_zone(page)) == 
ZONE_MOVABLE))
    46                  gfp_mask |= __GFP_HIGHMEM;
    47  
    48          if (thp_migration_supported() && PageTransHuge(page))
  > 49                  return alloc_transhuge_page_nodemask(gfp_mask | 
GFP_TRANSHUGE,
    50                                  preferred_nid, nodemask);
    51          else
    52                  return __alloc_pages_nodemask(gfp_mask, order,
    53                                  preferred_nid, nodemask);
    54  
    55          return new_page;
    56  }
    57  

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