var runtime.adviseUnused

3 uses

	runtime (current package)
		mem_linux.go#L37: var adviseUnused = uint32(_MADV_FREE)
		mem_linux.go#L109: 		advise = atomic.Load(&adviseUnused)
		mem_linux.go#L114: 		atomic.Store(&adviseUnused, _MADV_DONTNEED)