f.patch

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 0fcf5f25d524..def29a572b49 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -50,6 +50,9 @@ static inline void btrfs_init_delayed_node(
 				struct btrfs_delayed_node *delayed_node,
 				struct btrfs_root *root, u64 inode_id)
 {
+	WARN_ONCE(inode_id < BTRFS_FIRST_FREE_OBJECTID ||
+		  inode_id > BTRFS_LAST_FREE_OBJECTID,
+		  "ino %llu is out of range", inode_id);
 	delayed_node->root = root;
 	delayed_node->inode_id = inode_id;
 	atomic_set(&delayed_node->refs, 0);
@@ -854,6 +857,9 @@ static int btrfs_insert_delayed_items(struct btrfs_trans_handle *trans,
 
 	ret = btrfs_insert_delayed_item(trans, root, path, curr);
 	if (ret < 0) {
+		pr_err("btrfs_insert_delayed_item({%llu, %u, %llu}) -> %d",
+		       curr->key.objectid, curr->key.type, curr->key.offset,
+		       ret);
 		btrfs_release_path(path);
 		goto insert_end;
 	}
@@ -1034,9 +1040,11 @@ static int __btrfs_update_delayed_inode(struct btrfs_trans_handle *trans,
 
 	ret = btrfs_lookup_inode(trans, root, path, &key, mod);
 	if (ret > 0) {
+		pr_err("__btrfs_update_delayed_inode(): inode is missing\n");
 		btrfs_release_path(path);
 		return -ENOENT;
 	} else if (ret < 0) {
+		pr_err("__btrfs_update_delayed_inode(): btrfs_lookup_inode() -> %d\n", ret);
 		return ret;
 	}
 
@@ -1084,8 +1092,10 @@ static int __btrfs_update_delayed_inode(struct btrfs_trans_handle *trans,
 	key.type = BTRFS_INODE_EXTREF_KEY;
 	key.offset = -1;
 	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
-	if (ret < 0)
+	if (ret < 0) {
+		pr_err("__btrfs_update_delayed_inode(): btrfs_search_slot() -> %d\n", ret);
 		goto err_out;
+	}
 	ASSERT(ret);
 
 	ret = 0;
@@ -1120,14 +1130,28 @@ __btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
 	int ret;
 
 	ret = btrfs_insert_delayed_items(trans, path, node->root, node);
-	if (ret)
-		return ret;
+	if (ret) {
+		pr_err("btrfs_insert_delayed_items() failed\n");
+		goto err;
+	}
 
 	ret = btrfs_delete_delayed_items(trans, path, node->root, node);
-	if (ret)
-		return ret;
+	if (ret) {
+		pr_err("btrfs_delete_delayed_items() failed\n");
+		goto err;
+	}
 
 	ret = btrfs_update_delayed_inode(trans, node->root, path, node);
+	if (ret) {
+		pr_err("btrfs_update_delayed_inode() failed\n");
+		goto err;
+	}
+
+	return 0;
+
+err:
+	pr_err("__btrfs_commit_inode_delayed_items(ino=%llu, flags=%lu) -> %d\n",
+	       node->inode_id, node->flags, ret);
 	return ret;
 }