Re: [PATCH] Btrfs-progs: repair missing dir index

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On Thu, Oct 02, 2014 at 02:50:39PM -0400, Josef Bacik wrote:
> +static int repair_inode_backrefs(struct btrfs_root *root,
> +				 struct inode_record *rec,
> +				 struct cache_tree *inode_cache)
> +{
> +	struct btrfs_trans_handle *trans;
> +	struct btrfs_path *path;
> +	struct inode_backref *tmp, *backref;
> +	u64 root_dirid = btrfs_root_dirid(&root->root_item);
> +	int ret;

Changed to ret = 1,

> +	list_for_each_entry_safe(backref, tmp, &rec->backrefs, list) {
[...]
> +	}

gcc prints warning about possibly unitilized ret here:

> +	BUG_ON(repaired && ret); /* Poor mans transaction abort */

So it would abort in case the list_for_each loop does not execute for
some reason.
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