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-rw-r--r--include/block/block-common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/block/block-common.h b/include/block/block-common.h
index 338fe5ff7a..7030669f04 100644
--- a/include/block/block-common.h
+++ b/include/block/block-common.h
@@ -257,6 +257,7 @@ typedef enum {
 #define BDRV_OPT_AUTO_READ_ONLY "auto-read-only"
 #define BDRV_OPT_DISCARD        "discard"
 #define BDRV_OPT_FORCE_SHARE    "force-share"
+#define BDRV_OPT_ACTIVE         "active"
 
 
 #define BDRV_SECTOR_BITS   9