btrfs-progs: read_tree_block() and read_node_slot() cleanup.

[platform/upstream/btrfs-progs.git] / extent-tree.c

diff --git a/extent-tree.c b/extent-tree.c
index 080f30d..1785e22 100644 (file)
--- a/extent-tree.c
+++ b/extent-tree.c
@@ -2962,6 +2962,13 @@ static int noinline walk_down_tree(struct btrfs_trans_handle *trans,
                        next = read_tree_block(root, bytenr, blocksize,
                                               ptr_gen);
                        mutex_lock(&root->fs_info->fs_mutex);
+                       if (!extent_buffer_uptodate(next)) {
+                               if (IS_ERR(next))
+                                       ret = PTR_ERR(next);
+                               else
+                                       ret = -EIO;
+                               break;
+                       }
                }
                WARN_ON(*level <= 0);
                if (path->nodes[*level-1])