if (mm != current->mm && !ignore_token && has_swap_token(mm)) 
/* Pretend the page is referenced if the task has the swap token and is in the middle of a page fault. */ if (mm != current->mm && !ignore_token && has_swap_token(mm) && rwsem_is_locked(&mm->mmap_sem)) 
static int page_referenced_one(struct page *page,	struct vm_area_struct *vma, unsigned int *mapcount, int ignore_token){	struct mm_struct *mm = vma->vm_mm;	unsigned long address;	pte_t *pte;	int referenced = 0;	address = vma_address(page, vma);	if (address == -EFAULT)		goto out;	pte = page_check_address(page, mm, address);	if (!IS_ERR(pte)) {		if (ptep_clear_flush_young(vma, address, pte))			referenced++;		if (mm != current->mm && !ignore_token && has_swap_token(mm))			referenced++;		(*mapcount)--;		pte_unmap(pte);		spin_unlock(&mm->page_table_lock);	}out:	return referenced;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/fcdae29aa7a5c79f245110f6680afdc1858d3626/rmap.c/buggy/mm/rmap.c