diff options
Diffstat (limited to 'fs/bcachefs/subvolume.h')
| -rw-r--r-- | fs/bcachefs/subvolume.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/fs/bcachefs/subvolume.h b/fs/bcachefs/subvolume.h index a8299ba2cab2..e62f876541fe 100644 --- a/fs/bcachefs/subvolume.h +++ b/fs/bcachefs/subvolume.h @@ -31,6 +31,51 @@ int bch2_subvolume_get_snapshot(struct btree_trans *, u32, u32 *); int bch2_subvol_is_ro_trans(struct btree_trans *, u32); int bch2_subvol_is_ro(struct bch_fs *, u32); +static inline struct bkey_s_c +bch2_btree_iter_peek_in_subvolume_upto_type(struct btree_iter *iter, struct bpos end, + u32 subvolid, unsigned flags) +{ + u32 snapshot; + int ret = bch2_subvolume_get_snapshot(iter->trans, subvolid, &snapshot); + if (ret) + return bkey_s_c_err(ret); + + bch2_btree_iter_set_snapshot(iter, snapshot); + return bch2_btree_iter_peek_upto_type(iter, end, flags); +} + +#define for_each_btree_key_in_subvolume_upto_continue(_trans, _iter, \ + _end, _subvolid, _flags, _k, _do) \ +({ \ + struct bkey_s_c _k; \ + int _ret3 = 0; \ + \ + do { \ + _ret3 = lockrestart_do(_trans, ({ \ + (_k) = bch2_btree_iter_peek_in_subvolume_upto_type(&(_iter), \ + _end, _subvolid, (_flags)); \ + if (!(_k).k) \ + break; \ + \ + bkey_err(_k) ?: (_do); \ + })); \ + } while (!_ret3 && bch2_btree_iter_advance(&(_iter))); \ + \ + bch2_trans_iter_exit((_trans), &(_iter)); \ + _ret3; \ +}) + +#define for_each_btree_key_in_subvolume_upto(_trans, _iter, _btree_id, \ + _start, _end, _subvolid, _flags, _k, _do) \ +({ \ + struct btree_iter _iter; \ + bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ + (_start), (_flags)); \ + \ + for_each_btree_key_in_subvolume_upto_continue(_trans, _iter, \ + _end, _subvolid, _flags, _k, _do); \ +}) + int bch2_delete_dead_snapshots(struct bch_fs *); void bch2_delete_dead_snapshots_async(struct bch_fs *); |