criu: mem: count all pages actually written to image as "pages_written"

Currently potentially lazy pages are not counted as written even if they
are dump into pages*img. Count these pages as "pages_written" when dump is
not going to skip writing lazy pages to disk.

travis-ci: success for criu: mem: count all pages actually written to image as "pages_written"
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/mem.c

@@ -175,7 +175,7 @@ static int generate_iovs(struct vma_area *vma, struct page_pipe *pp, u64 *map, u
 			pages[1]++;
 		} else {
 			ret = page_pipe_add_page(pp, vaddr, ppb_flags);
-			if (ppb_flags & PPB_LAZY)
+			if (ppb_flags & PPB_LAZY && opts.lazy_pages)
 				pages[2]++;
 			else
 				pages[3]++;