[android-common:android17-6.18 2/2] mm/page_size_compat.c:101:21: error: use of undeclared identifier 'bpf_map_fops'; did you mean 'bpf_map_put'?

[kernel test robot <lkp@intel.com>]

tree:   https://android.googlesource.com/kernel/common android17-6.18
head:   08e21ebff803243bccd5e6cd4a8253ffebf74c64
commit: 156b58543560782fded68ccebbf252314d2d9ba7 [2/2] ANDROID: 16K: Adjust bpf ringbuffer pgoffset on 16K x86 emulation
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260410/202604101625.iJPMFeIM-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project ae825cb8cea7f3ac8e5e4096f22713845cf5e501)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260410/202604101625.iJPMFeIM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604101625.iJPMFeIM-lkp@intel.com/

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

>> mm/page_size_compat.c:101:21: error: use of undeclared identifier 'bpf_map_fops'; did you mean 'bpf_map_put'?
     101 |         if (file->f_op != &bpf_map_fops)
         |                            ^~~~~~~~~~~~
         |                            bpf_map_put
   include/linux/bpf.h:3135:20: note: 'bpf_map_put' declared here
    3135 | static inline void bpf_map_put(struct bpf_map *map)
         |                    ^
>> mm/page_size_compat.c:101:17: warning: comparison of distinct pointer types ('const struct file_operations *' and 'void (*)(struct bpf_map *)') [-Wcompare-distinct-pointer-types]
     101 |         if (file->f_op != &bpf_map_fops)
         |             ~~~~~~~~~~ ^  ~~~~~~~~~~~~~
   1 warning and 1 error generated.


vim +101 mm/page_size_compat.c

    98	
    99	bool bpf_is_ringbuf_file(struct file *file)
   100	{
 > 101		if (file->f_op != &bpf_map_fops)
   102			return false;
   103	
   104		struct bpf_map *map = file->private_data;
   105	
   106		return map->map_type == BPF_MAP_TYPE_RINGBUF ||
   107			map->map_type == BPF_MAP_TYPE_USER_RINGBUF;
   108	}
   109	

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