VADDR_FLAG_UPDATED_COUNT
if (d_page->vaddr & VADDR_FLAG_UPDATED_COUNT) {
d_page->vaddr &= ~VADDR_FLAG_UPDATED_COUNT;
if (d_page->vaddr & VADDR_FLAG_UPDATED_COUNT) {
d_page->vaddr &= ~VADDR_FLAG_UPDATED_COUNT;
d_page->vaddr |= VADDR_FLAG_UPDATED_COUNT;
d_page->vaddr |= VADDR_FLAG_UPDATED_COUNT;