basic: reorder UnitType enum

The enum order will be used to order jobs in the job queue.
Make sure that unit types that fork aditional processes come first to
maximize parallelism.

diff --git a/src/basic/unit-def.h b/src/basic/unit-def.h
index dd226549f4c3e14e5655d497dda102036c512ad5..c7b4235bea7bdbafb47a028c6f06ae9cb7b05c02 100644 (file)
--- a/src/basic/unit-def.h
+++ b/src/basic/unit-def.h
@@ -5,14 +5,17 @@
 
 #include "macro.h"
 
+/* The enum order is used to order unit jobs in the job queue
+ * when other criteria (cpu weight, nice level) are identical.
+ * In this case service units have the hightest priority. */
 typedef enum UnitType {
         UNIT_SERVICE = 0,
+        UNIT_MOUNT,
+        UNIT_SWAP,
         UNIT_SOCKET,
         UNIT_TARGET,
         UNIT_DEVICE,
-        UNIT_MOUNT,
         UNIT_AUTOMOUNT,
-        UNIT_SWAP,
         UNIT_TIMER,
         UNIT_PATH,
         UNIT_SLICE,