btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename_exchange

btrfs_record_root_in_trans will return errors in the future, so handle
the error properly in btrfs_rename_exchange.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 41517d1..179ffb9 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9108,8 +9108,11 @@ static int btrfs_rename_exchange(struct inode *old_dir,
                goto out_notrans;
        }
 
-       if (dest != root)
-               btrfs_record_root_in_trans(trans, dest);
+       if (dest != root) {
+               ret = btrfs_record_root_in_trans(trans, dest);
+               if (ret)
+                       goto out_fail;
+       }
 
        /*
         * We need to find a free sequence number both in the source and