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-rw-r--r--disk-io.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/disk-io.c b/disk-io.c
index 0af3898..7ad2cc2 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -877,7 +877,17 @@ int btrfs_setup_all_roots(struct btrfs_fs_info *fs_info, u64 root_tree_bytenr,
fs_info->extent_root);
if (ret) {
printk("Couldn't setup extent tree\n");
- return -EIO;
+ if (!(flags & OPEN_CTREE_PARTIAL))
+ return -EIO;
+ /* Need a blank node here just so we don't screw up in the
+ * million of places that assume a root has a valid ->node
+ */
+ fs_info->extent_root->node =
+ btrfs_find_create_tree_block(fs_info->extent_root, 0,
+ leafsize);
+ if (!fs_info->extent_root->node)
+ return -ENOMEM;
+ clear_extent_buffer_uptodate(NULL, fs_info->extent_root->node);
}
fs_info->extent_root->track_dirty = 1;