Improvement of metadata flush setting

Signed-off-by: xqzhou <xue.qiang.zhou@intel.com>

src/engine/engine_common.c

@@ -117,7 +117,8 @@ void ocf_engine_update_req_info(struct ocf_cache *cache,
 			req->info.dirty_any++;
 
 			/* Check if cache line is fully dirty */
-			if (metadata_test_dirty_all(cache, _entry->coll_idx))
+			if (metadata_test_dirty_sec(cache, _entry->coll_idx, 
+				start_sector, end_sector))
 				req->info.dirty_all++;
 		}