diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 04b06bc..15cbc2b 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1175,7 +1175,7 @@
 	struct tree_mod_elem *tm;
 	struct extent_buffer *eb;
 	struct tree_mod_root *old_root = NULL;
-	u64 old_generation;
+	u64 old_generation = 0;
 	u64 logical;
 
 	eb = btrfs_read_lock_root_node(root);
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 58adbd0..0e92e57 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1308,7 +1308,8 @@
 	}
 	if (device->fs_devices && device->fs_devices->seeding) {
 		printk(KERN_INFO "btrfs: resizer unable to apply on "
-		       "seeding device %llu\n", devid);
+		       "seeding device %llu\n",
+		       (unsigned long long)devid);
 		ret = -EINVAL;
 		goto out_free;
 	}