void arch_unmap_area_topdown(struct vm_area_struct *area) 
void arch_unmap_area_topdown(struct mm_struct *mm, unsigned long addr) 
void arch_unmap_area_topdown(struct vm_area_struct *area){	/*	 * Is this a new hole at the highest possible address?	 */	if (area->vm_end > area->vm_mm->free_area_cache)		area->vm_mm->free_area_cache = area->vm_end;	/* dont allow allocations above current base */	if (area->vm_mm->free_area_cache > area->vm_mm->mmap_base)		area->vm_mm->free_area_cache = area->vm_mm->mmap_base;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/1363c3cd8603a913a27e2995dccbd70d5312d8e6/mmap.c/buggy/mm/mmap.c