[android-common:android17-6.18 6/6] mm/filemap.c:70:6: warning: no previous prototype for function '_trace_android_vh_unlock_mmap_bypass'

tree:   https://android.googlesource.com/kernel/common android17-6.18
head:   3e682e795cc26730ba615ad4e43667507583ad84
commit: 1b9b045a586245cc1c29b2747c6586234c7f5bad [6/6] ANDROID: mm: add vendor hook to bypass mmap_lock release in page fault
config: arm-randconfig-r073-20260821 (https://download.01.org/0day-ci/archive/20260821/[email protected]/config)
compiler: clang version 21.1.8 (https://github.com/llvm/llvm-project 2078da43e25a4623cab2d0d60decddf709aaea28)
smatch: v0.5.0-9187-g5189e3fb
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260821/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> mm/filemap.c:70:6: warning: no previous prototype for function '_trace_android_vh_unlock_mmap_bypass' [-Wmissing-prototypes]
      70 | void _trace_android_vh_unlock_mmap_bypass(struct vm_fault *vmf,
         |      ^
   mm/filemap.c:70:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      70 | void _trace_android_vh_unlock_mmap_bypass(struct vm_fault *vmf,
         | ^
         | static 
   1 warning generated.


vim +/_trace_android_vh_unlock_mmap_bypass +70 mm/filemap.c

    64	
    65	/*
    66	 * trace_android_vh_unlock_mmap_bypass is called in mm/internal.h
    67	 * by including trace/hooks/mm.h directly, which will result in build-err.
    68	 * So we create func: _trace_android_vh_unlock_mmap_bypass.
    69	 */
  > 70	void _trace_android_vh_unlock_mmap_bypass(struct vm_fault *vmf,
    71			struct file *fpin, bool *bypass)
    72	{
    73		trace_android_vh_unlock_mmap_bypass(vmf, fpin, bypass);
    74	}
    75	

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