[hch-block:blkdev.h-includes 2/17] drivers/md/dm-ima.c:54:29: error: implicit declaration of function 'memalloc_noio_save'

[hch-block:blkdev.h-includes 2/17] drivers/md/dm-ima.c:54:29: error: implicit declaration of function 'memalloc_noio_save'

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
TO: Christoph Hellwig <hch@lst.de>

tree:   git://git.infradead.org/users/hch/block.git blkdev.h-includes
head:   0687088056048288700f442e86ea92af0fce9a12
commit: b7260dd875e13760df5d1a677c85a1062b49128a [2/17] mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h>
:::::: branch date: 24 hours ago
:::::: commit date: 24 hours ago
config: arc-randconfig-c023-20210913 (attached as .config)
compiler: arceb-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add hch-block git://git.infradead.org/users/hch/block.git
        git fetch --no-tags hch-block blkdev.h-includes
        git checkout b7260dd875e13760df5d1a677c85a1062b49128a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc 

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

All errors (new ones prefixed by >>):

   drivers/md/dm-ima.c: In function 'dm_ima_alloc':
>> drivers/md/dm-ima.c:54:29: error: implicit declaration of function 'memalloc_noio_save' [-Werror=implicit-function-declaration]
      54 |                 noio_flag = memalloc_noio_save();
         |                             ^~~~~~~~~~~~~~~~~~
>> drivers/md/dm-ima.c:59:17: error: implicit declaration of function 'memalloc_noio_restore' [-Werror=implicit-function-declaration]
      59 |                 memalloc_noio_restore(noio_flag);
         |                 ^~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/memalloc_noio_save +54 drivers/md/dm-ima.c

91ccbbac1747ee Tushar Sugandhi 2021-07-12  44  
91ccbbac1747ee Tushar Sugandhi 2021-07-12  45  /*
91ccbbac1747ee Tushar Sugandhi 2021-07-12  46   * Internal function to allocate memory for IMA measurements.
91ccbbac1747ee Tushar Sugandhi 2021-07-12  47   */
91ccbbac1747ee Tushar Sugandhi 2021-07-12  48  static void *dm_ima_alloc(size_t len, gfp_t flags, bool noio)
91ccbbac1747ee Tushar Sugandhi 2021-07-12  49  {
91ccbbac1747ee Tushar Sugandhi 2021-07-12  50  	unsigned int noio_flag;
91ccbbac1747ee Tushar Sugandhi 2021-07-12  51  	void *ptr;
91ccbbac1747ee Tushar Sugandhi 2021-07-12  52  
91ccbbac1747ee Tushar Sugandhi 2021-07-12  53  	if (noio)
91ccbbac1747ee Tushar Sugandhi 2021-07-12 @54  		noio_flag = memalloc_noio_save();
91ccbbac1747ee Tushar Sugandhi 2021-07-12  55  
91ccbbac1747ee Tushar Sugandhi 2021-07-12  56  	ptr = kzalloc(len, flags);
91ccbbac1747ee Tushar Sugandhi 2021-07-12  57  
91ccbbac1747ee Tushar Sugandhi 2021-07-12  58  	if (noio)
91ccbbac1747ee Tushar Sugandhi 2021-07-12 @59  		memalloc_noio_restore(noio_flag);
91ccbbac1747ee Tushar Sugandhi 2021-07-12  60  
91ccbbac1747ee Tushar Sugandhi 2021-07-12  61  	return ptr;
91ccbbac1747ee Tushar Sugandhi 2021-07-12  62  }
91ccbbac1747ee Tushar Sugandhi 2021-07-12  63  

:::::: The code at line 54 was first introduced by commit
:::::: 91ccbbac1747eea155632a1c6bb100052309b215 dm ima: measure data on table load

:::::: TO: Tushar Sugandhi <tusharsu@linux.microsoft.com>
:::::: CC: Mike Snitzer <snitzer@redhat.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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