-int bch2_extent_update(struct btree_trans *, struct btree_iter *,
- struct bkey_i *, struct disk_reservation *,
- u64 *, u64, s64 *);
-int bch2_fpunch_at(struct btree_trans *, struct btree_iter *,
- struct bpos, u64 *, s64 *);
-int bch2_fpunch(struct bch_fs *c, u64, u64, u64, u64 *, s64 *);
+int bch2_sum_sector_overwrites(struct btree_trans *, struct btree_iter *,
+ struct bkey_i *, bool *, s64 *, s64 *);
+int bch2_extent_update(struct btree_trans *, subvol_inum,
+ struct btree_iter *, struct bkey_i *,
+ struct disk_reservation *, u64, s64 *, bool);
+int bch2_extent_fallocate(struct btree_trans *, subvol_inum, struct btree_iter *,
+ unsigned, struct bch_io_opts, s64 *,
+ struct write_point_specifier);