+/*
+ * Macro to add commands to auxiliary batch.
+ * This macro only checks for page overflow before inserting the commands,
+ * this is sufficient as the null state generator makes the final batch
+ * with two passes to build command and state separately. At this point
+ * the size of both are known and it compacts them by relocating the state
+ * right after the commands taking care of aligment so we should sufficient
+ * space below them for adding new commands.
+ */
+#define OUT_BATCH(batch, i, val) \
+ do { \
+ if (WARN_ON((i) >= PAGE_SIZE / sizeof(u32))) { \
+ ret = -ENOSPC; \
+ goto err_out; \
+ } \
+ (batch)[(i)++] = (val); \
+ } while(0)
+