[memcg:cleanups/kvmalloc 5/5] lib/rhashtable.c:80:31: error: 'gfp_' undeclared

[kbuild test robot <fengguang.wu@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git cleanups/kvmalloc
head:   351a752d1cd188fbe199f7a42094af72ee90fd63
commit: 351a752d1cd188fbe199f7a42094af72ee90fd63 [5/5] rhashtable: simplify a strange allocation pattern
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
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
        git checkout 351a752d1cd188fbe199f7a42094af72ee90fd63
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   lib/rhashtable.c: In function 'alloc_bucket_locks':
>> lib/rhashtable.c:80:31: error: 'gfp_' undeclared (first use in this function)
      if (gfpflags_allow_blocking(gfp_))
                                  ^
   lib/rhashtable.c:80:31: note: each undeclared identifier is reported only once for each function it appears in

vim +/gfp_ +80 lib/rhashtable.c

    74		size = roundup_pow_of_two(nr_pcpus * ht->p.locks_mul);
    75	
    76		/* Never allocate more than 0.5 locks per bucket */
    77		size = min_t(unsigned int, size, tbl->size >> 1);
    78	
    79		if (sizeof(spinlock_t) != 0) {
  > 80			if (gfpflags_allow_blocking(gfp_))
    81				tbl->locks = kvmalloc(size * sizeof(spinlock_t), gfp);
    82			else
    83				tbl->locks = kmalloc_array(size, sizeof(spinlock_t),

---
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