1 files changed, 2 insertions, 0 deletions
diff --git a/ioctl.h b/ioctl.h
index 6fda3a1d..d32e22cb 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -419,6 +419,8 @@ struct btrfs_ioctl_clone_range_args {
 					struct btrfs_ioctl_ino_path_args)
 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
 					struct btrfs_ioctl_ino_path_args)
+#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
+				     struct btrfs_ioctl_vol_args)
 
 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
 				struct btrfs_ioctl_received_subvol_args)