[isilence:syz/region-conversion-3 13/20] io_uring/memmap.c:386:12: warning: 'io_region_mmap' defined but not used

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

tree:   https://github.com/isilence/linux syz/region-conversion-3
head:   eab28eddf62efd7e9a5d20b3b41e5943c9065e90
commit: 9d971641dc86981b9f6d12433fe55ed9d506ae32 [13/20] io_uring/memmap: implement mmap for regions
config: arm-vf610m4_defconfig (https://download.01.org/0day-ci/archive/20241126/202411261012.C28PcFox-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241126/202411261012.C28PcFox-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/202411261012.C28PcFox-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> io_uring/memmap.c:386:12: warning: 'io_region_mmap' defined but not used [-Wunused-function]
     386 | static int io_region_mmap(struct io_ring_ctx *ctx,
         |            ^~~~~~~~~~~~~~


vim +/io_region_mmap +386 io_uring/memmap.c

   385	
 > 386	static int io_region_mmap(struct io_ring_ctx *ctx,
   387				  struct io_mapped_region *mr,
   388				  struct vm_area_struct *vma)
   389	{
   390		unsigned long nr_pages = mr->nr_pages;
   391	
   392		vm_flags_set(vma, VM_DONTEXPAND);
   393		return vm_insert_pages(vma, vma->vm_start, mr->pages, &nr_pages);
   394	}
   395	

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