diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d8d7b1ee83ca..97f1ba7c18b2 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4066,7 +4066,11 @@ int btrfs_balance(struct btrfs_fs_info *fs_info,
 		}
 	}
 
-	num_devices = btrfs_num_devices(fs_info);
+	/*
+	 * rw_devices will not change at the moment, device add/delete/replace
+	 * are excluded by EXCL_OP
+	 */
+	num_devices = fs_info->fs_devices->rw_devices;
 
 	/*
 	 * SINGLE profile on-disk has no profile bit, but in-memory we have a