static int set_brk(unsigned long start, unsigned long end)
{
	start = ELF_PAGEALIGN(start);
	end = ELF_PAGEALIGN(end);
	if (end > start) {
		int error = vm_brk(start, end - start);
		if (error)
			return error;
	}
	current->mm->start_brk = current->mm->brk = end;
	return 0;
}
Unknown