diff --git a/disk-io.c b/disk-io.c
index a6e1000..17808fd 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -185,16 +185,29 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
 	int mirror_num = 0;
 	int num_copies;
 
+	printk("-- entering read_tree_block...\n");
+
+	if (parent_transid == 85879) {
+		printk("called with parent_transid=85879,"
+			" setting it to 85878\n");
+		parent_transid = 85878;
+	}
+
 	eb = btrfs_find_create_tree_block(root, bytenr, blocksize);
 	if (!eb)
 		return NULL;
 
 	if (btrfs_buffer_uptodate(eb, parent_transid))
 		return eb;
+	
+	printk("btrfs_buffer_uptodate @%llu / transid wanted %llu\n",
+		(unsigned long long) eb->start,
+		(unsigned long long) parent_transid);
 
 	dev_nr = 0;
 	length = blocksize;
 	while (1) {
+		printk("-- search loop [transid=%llu] --\n", parent_transid);
 		ret = btrfs_map_block(&root->fs_info->mapping_tree, READ,
 				      eb->start, &length, &multi, mirror_num);
 		BUG_ON(ret);
@@ -204,10 +217,14 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
 		eb->dev_bytenr = multi->stripes[0].physical;
 		kfree(multi);
 		ret = read_extent_from_disk(eb);
+		if (parent_transid == 85878) {
+			print_extent_buffer_info(eb);
+		}
 		if (ret == 0 && check_tree_block(root, eb) == 0 &&
 		    csum_tree_block(root, eb, 1) == 0 &&
 		    verify_parent_transid(eb->tree, eb, parent_transid) == 0) {
 			btrfs_set_buffer_uptodate(eb);
+			printk("`-> eb found and set uptodate!\n");
 			return eb;
 		}
 		num_copies = btrfs_num_copies(&root->fs_info->mapping_tree,
@@ -221,6 +238,7 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
 		}
 	}
 	free_extent_buffer(eb);
+	printk("-- not found --\n");
 	return NULL;
 }
 
@@ -1016,10 +1034,14 @@ int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid)
 	int ret;
 
 	ret = extent_buffer_uptodate(buf);
-	if (!ret)
+	if (!ret) {
+		printk("btrfs_buffer_uptodate: extent_buffer_uptodate FAIL\n");
 		return ret;
+	}
 
 	ret = verify_parent_transid(buf->tree, buf, parent_transid);
+	if (ret)
+		printk("btrfs_buffer_uptodate: verify_parent_transid FAIL\n");
 	return !ret;
 }
 
@@ -1027,3 +1049,13 @@ int btrfs_set_buffer_uptodate(struct extent_buffer *eb)
 {
 	return set_extent_buffer_uptodate(eb);
 }
+
+void print_extent_buffer_info(struct extent_buffer *eb) {
+	printk("`-> extend buffer informations follow\n");
+	printk("    |-> start:      %llu\n", eb->start     );
+	printk("    |-> dev_bytenr: %llu\n", eb->dev_bytenr);
+	printk("    |-> len:        %i\n",   eb->len       );
+	printk("    |-> refs:       %i\n",   eb->refs      );
+	printk("    |-> flags:      %i\n",   eb->flags     );
+}
+