1 files changed, 6 insertions, 3 deletions
diff --git a/database/engine/rrdengine.h b/database/engine/rrdengine.h
index 9e52764d54..69e4123544 100644
--- a/database/engine/rrdengine.h
+++ b/database/engine/rrdengine.h
@@ -181,14 +181,17 @@ typedef enum __attribute__ ((__packed__)) {
 } RRDENG_COLLECT_PAGE_FLAGS;
 
 struct rrdeng_collect_handle {
+    struct storage_collect_handle common; // has to be first item
+
+    RRDENG_COLLECT_PAGE_FLAGS page_flags;
+    RRDENG_COLLECT_HANDLE_OPTIONS options;
+    uint8_t type;
+
     struct metric *metric;
     struct pgc_page *page;
     void *data;
     size_t data_size;
     struct pg_alignment *alignment;
-    RRDENG_COLLECT_HANDLE_OPTIONS options;
-    uint8_t type;
-    RRDENG_COLLECT_PAGE_FLAGS page_flags;
     uint32_t page_entries_max;
     uint32_t page_position;                   // keep track of the current page size, to make sure we don't exceed it
     usec_t page_start_time_ut;