@@ -438,7 +438,8 @@ static int find_and_setup_root(struct btrfs_root *tree_root,
root, fs_info, objectid);
ret = btrfs_find_last_root(tree_root, objectid,
&root->root_item, &root->root_key);
- BUG_ON(ret);
+ if (ret)
+ return ret;
blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
generation = btrfs_root_generation(&root->root_item);
@@ -47,7 +47,7 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
slot = path->slots[0] - 1;
btrfs_item_key_to_cpu(l, &found_key, slot);
if (found_key.objectid != objectid) {
- ret = 1;
+ ret = -ENOENT;
goto out;
}
read_extent_buffer(l, item, btrfs_item_ptr_offset(l, slot),
Instead of doing a BUG_ON() if we fail to find the last fs root just return an error so the callers can deal with it how they like. Also we need to actually return an error if we can't find the latest root so that the error handling works. With this btrfsck was able to deal with a file system that was missing a root item but still had extents that referred back to the root. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> --- disk-io.c | 3 ++- root-tree.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-)