diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 813566acc5d3aef1e6aa671d6c4ec21310b50dfe..558fbe40736870e1f4f1cf4c5bf327540e8fb8bc 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2365,6 +2365,9 @@ int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans,
 				struct btrfs_key *ins)
 {
 	int ret;
+
+	if (root_objectid == BTRFS_TREE_LOG_OBJECTID)
+		return 0;
 	maybe_lock_mutex(root);
 	ret = __btrfs_alloc_reserved_extent(trans, root, root_objectid,
 					    ref_generation, owner,