struct anon_vma *anon_vma = vma->anon_vma; pgoff_t index;  
void page_add_anon_rmap(struct page *page,	struct vm_area_struct *vma, unsigned long address){	struct anon_vma *anon_vma = vma->anon_vma;	pgoff_t index;	BUG_ON(PageReserved(page));	BUG_ON(!anon_vma);	inc_mm_counter(vma->vm_mm, anon_rss);	anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON;	index = (address - vma->vm_start) >> PAGE_SHIFT;	index += vma->vm_pgoff;	index >>= PAGE_CACHE_SHIFT - PAGE_SHIFT;	if (atomic_inc_and_test(&page->_mapcount)) {		page->index = index;		page->mapping = (struct address_space *) anon_vma;		inc_page_state(nr_mapped);	}	/* else checking page index and mapping is racy */}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/2822c1aa574d277b9ba0130b1e71c1a5874bc04a/rmap.c/clean/mm/rmap.c