| c1103f7a5d7a ("btrfs: move all ref head cleanup to the helper function") | |
| 1ce7a5ec44c8 ("btrfs: move ref_mod modification into the if (ref) logic") | |
| 194ab0bc21cc ("btrfs: breakout empty head cleanup to a helper") | |
| b00e62507ec6 ("btrfs: move extent_op cleanup to a helper") | |
| 2eadaa22c17a ("btrfs: add a helper to return a head ref") |