void arch_unmap_area(struct vm_area_struct *area) 
void arch_unmap_area(struct mm_struct *mm, unsigned long addr) 
void arch_unmap_area(struct vm_area_struct *area){}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/1363c3cd8603a913a27e2995dccbd70d5312d8e6/nommu.c/clean/mm/nommu.c