diff options
Diffstat (limited to 'fs/bcachefs/snapshot.h')
| -rw-r--r-- | fs/bcachefs/snapshot.h | 61 |
1 files changed, 36 insertions, 25 deletions
diff --git a/fs/bcachefs/snapshot.h b/fs/bcachefs/snapshot.h index b7d2fed37c4f..382a171f5413 100644 --- a/fs/bcachefs/snapshot.h +++ b/fs/bcachefs/snapshot.h @@ -2,14 +2,12 @@ #ifndef _BCACHEFS_SNAPSHOT_H #define _BCACHEFS_SNAPSHOT_H -enum bkey_invalid_flags; - void bch2_snapshot_tree_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); -int bch2_snapshot_tree_invalid(struct bch_fs *, struct bkey_s_c, - enum bkey_invalid_flags, struct printbuf *); +int bch2_snapshot_tree_validate(struct bch_fs *, struct bkey_s_c, + struct bkey_validate_context); #define bch2_bkey_ops_snapshot_tree ((struct bkey_ops) { \ - .key_invalid = bch2_snapshot_tree_invalid, \ + .key_validate = bch2_snapshot_tree_validate, \ .val_to_text = bch2_snapshot_tree_to_text, \ .min_val_size = 8, \ }) @@ -19,13 +17,14 @@ struct bkey_i_snapshot_tree *__bch2_snapshot_tree_create(struct btree_trans *); int bch2_snapshot_tree_lookup(struct btree_trans *, u32, struct bch_snapshot_tree *); void bch2_snapshot_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); -int bch2_snapshot_invalid(struct bch_fs *, struct bkey_s_c, - enum bkey_invalid_flags, struct printbuf *); +int bch2_snapshot_validate(struct bch_fs *, struct bkey_s_c, + struct bkey_validate_context); int bch2_mark_snapshot(struct btree_trans *, enum btree_id, unsigned, - struct bkey_s_c, struct bkey_s, unsigned); + struct bkey_s_c, struct bkey_s, + enum btree_iter_update_trigger_flags); #define bch2_bkey_ops_snapshot ((struct bkey_ops) { \ - .key_invalid = bch2_snapshot_invalid, \ + .key_validate = bch2_snapshot_validate, \ .val_to_text = bch2_snapshot_to_text, \ .trigger = bch2_mark_snapshot, \ .min_val_size = 24, \ @@ -77,7 +76,7 @@ static inline u32 __bch2_snapshot_parent(struct bch_fs *c, u32 id) return 0; u32 parent = s->parent; - if (IS_ENABLED(CONFIG_BCACHEFS_DEBU) && + if (IS_ENABLED(CONFIG_BCACHEFS_DEBUG) && parent && s->depth != snapshot_t(c, parent)->depth + 1) panic("id %u depth=%u parent %u depth=%u\n", @@ -106,6 +105,7 @@ static inline u32 bch2_snapshot_nth_parent(struct bch_fs *c, u32 id, u32 n) return id; } +u32 bch2_snapshot_oldest_subvol(struct bch_fs *, u32, snapshot_id_list *); u32 bch2_snapshot_skiplist_get(struct bch_fs *, u32); static inline u32 bch2_snapshot_root(struct bch_fs *c, u32 id) @@ -120,24 +120,24 @@ static inline u32 bch2_snapshot_root(struct bch_fs *c, u32 id) return id; } -static inline u32 __bch2_snapshot_equiv(struct bch_fs *c, u32 id) +static inline enum snapshot_id_state __bch2_snapshot_id_state(struct bch_fs *c, u32 id) { const struct snapshot_t *s = snapshot_t(c, id); - return s ? s->equiv : 0; + return s ? s->state : SNAPSHOT_ID_empty; } -static inline u32 bch2_snapshot_equiv(struct bch_fs *c, u32 id) +static inline enum snapshot_id_state bch2_snapshot_id_state(struct bch_fs *c, u32 id) { rcu_read_lock(); - id = __bch2_snapshot_equiv(c, id); + enum snapshot_id_state ret = __bch2_snapshot_id_state(c, id); rcu_read_unlock(); - return id; + return ret; } -static inline bool bch2_snapshot_is_equiv(struct bch_fs *c, u32 id) +static inline bool bch2_snapshot_exists(struct bch_fs *c, u32 id) { - return id == bch2_snapshot_equiv(c, id); + return bch2_snapshot_id_state(c, id) == SNAPSHOT_ID_live; } static inline int bch2_snapshot_is_internal_node(struct bch_fs *c, u32 id) @@ -180,12 +180,9 @@ static inline bool bch2_snapshot_is_ancestor(struct bch_fs *c, u32 id, u32 ances static inline bool bch2_snapshot_has_children(struct bch_fs *c, u32 id) { - const struct snapshot_t *t; - bool ret; - rcu_read_lock(); - t = snapshot_t(c, id); - ret = (t->children[0]|t->children[1]) != 0; + const struct snapshot_t *t = snapshot_t(c, id); + bool ret = t && (t->children[0]|t->children[1]) != 0; rcu_read_unlock(); return ret; @@ -250,8 +247,18 @@ int bch2_check_snapshot_trees(struct bch_fs *); int bch2_check_snapshots(struct bch_fs *); int bch2_reconstruct_snapshots(struct bch_fs *); +int __bch2_check_key_has_snapshot(struct btree_trans *, struct btree_iter *, struct bkey_s_c); + +static inline int bch2_check_key_has_snapshot(struct btree_trans *trans, + struct btree_iter *iter, + struct bkey_s_c k) +{ + return likely(bch2_snapshot_exists(trans->c, k.k->p.snapshot)) + ? 0 + : __bch2_check_key_has_snapshot(trans, iter, k); +} + int bch2_snapshot_node_set_deleted(struct btree_trans *, u32); -void bch2_delete_dead_snapshots_work(struct work_struct *); int __bch2_key_has_snapshot_overwrites(struct btree_trans *, enum btree_id, struct bpos); @@ -266,10 +273,14 @@ static inline int bch2_key_has_snapshot_overwrites(struct btree_trans *trans, return __bch2_key_has_snapshot_overwrites(trans, id, pos); } -int bch2_propagate_key_to_snapshot_leaves(struct btree_trans *, enum btree_id, - struct bkey_s_c, struct bpos *); +int __bch2_delete_dead_snapshots(struct bch_fs *); +int bch2_delete_dead_snapshots(struct bch_fs *); +void bch2_delete_dead_snapshots_work(struct work_struct *); +void bch2_delete_dead_snapshots_async(struct bch_fs *); +void bch2_snapshot_delete_status_to_text(struct printbuf *, struct bch_fs *); int bch2_snapshots_read(struct bch_fs *); void bch2_fs_snapshots_exit(struct bch_fs *); +void bch2_fs_snapshots_init_early(struct bch_fs *); #endif /* _BCACHEFS_SNAPSHOT_H */ |