34 static inline struct snapshot_t *__snapshot_t(struct snapshot_table *t, u32 id)  in __snapshot_t()  argument
36 	u32 idx = U32_MAX - id;  in __snapshot_t()
43 static inline const struct snapshot_t *snapshot_t(struct bch_fs *c, u32 id)  in snapshot_t()  argument
45 	return __snapshot_t(rcu_dereference(c->snapshots), id);  in snapshot_t()
48 static inline u32 bch2_snapshot_tree(struct bch_fs *c, u32 id)  in bch2_snapshot_tree()  argument
51 	const struct snapshot_t *s = snapshot_t(c, id);  in bch2_snapshot_tree()
52 	id = s ? s->tree : 0;  in bch2_snapshot_tree()
55 	return id;  in bch2_snapshot_tree()
58 static inline u32 __bch2_snapshot_parent_early(struct bch_fs *c, u32 id)  in __bch2_snapshot_parent_early()  argument
60 	const struct snapshot_t *s = snapshot_t(c, id);  in __bch2_snapshot_parent_early()
64 static inline u32 bch2_snapshot_parent_early(struct bch_fs *c, u32 id)  in bch2_snapshot_parent_early()  argument
67 	id = __bch2_snapshot_parent_early(c, id);  in bch2_snapshot_parent_early()
70 	return id;  in bch2_snapshot_parent_early()
73 static inline u32 __bch2_snapshot_parent(struct bch_fs *c, u32 id)  in __bch2_snapshot_parent()  argument
75 	const struct snapshot_t *s = snapshot_t(c, id);  in __bch2_snapshot_parent()
83 		panic("id %u depth=%u parent %u depth=%u\n",  in __bch2_snapshot_parent()
84 		      id, snapshot_t(c, id)->depth,  in __bch2_snapshot_parent()
90 static inline u32 bch2_snapshot_parent(struct bch_fs *c, u32 id)  in bch2_snapshot_parent()  argument
93 	id = __bch2_snapshot_parent(c, id);  in bch2_snapshot_parent()
96 	return id;  in bch2_snapshot_parent()
99 static inline u32 bch2_snapshot_nth_parent(struct bch_fs *c, u32 id, u32 n)  in bch2_snapshot_nth_parent()  argument
103 		id = __bch2_snapshot_parent(c, id);  in bch2_snapshot_nth_parent()
106 	return id;  in bch2_snapshot_nth_parent()
111 static inline u32 bch2_snapshot_root(struct bch_fs *c, u32 id)  in bch2_snapshot_root()  argument
116 	while ((parent = __bch2_snapshot_parent(c, id)))  in bch2_snapshot_root()
117 		id = parent;  in bch2_snapshot_root()
120 	return id;  in bch2_snapshot_root()
123 static inline u32 __bch2_snapshot_equiv(struct bch_fs *c, u32 id)  in __bch2_snapshot_equiv()  argument
125 	const struct snapshot_t *s = snapshot_t(c, id);  in __bch2_snapshot_equiv()
129 static inline u32 bch2_snapshot_equiv(struct bch_fs *c, u32 id)  in bch2_snapshot_equiv()  argument
132 	id = __bch2_snapshot_equiv(c, id);  in bch2_snapshot_equiv()
135 	return id;  in bch2_snapshot_equiv()
138 static inline int bch2_snapshot_is_internal_node(struct bch_fs *c, u32 id)  in bch2_snapshot_is_internal_node()  argument
141 	const struct snapshot_t *s = snapshot_t(c, id);  in bch2_snapshot_is_internal_node()
148 static inline int bch2_snapshot_is_leaf(struct bch_fs *c, u32 id)  in bch2_snapshot_is_leaf()  argument
150 	int ret = bch2_snapshot_is_internal_node(c, id);  in bch2_snapshot_is_leaf()
169 static inline bool bch2_snapshot_is_ancestor(struct bch_fs *c, u32 id, u32 ancestor)  in bch2_snapshot_is_ancestor()  argument
171 	return id == ancestor  in bch2_snapshot_is_ancestor()
173 		: __bch2_snapshot_is_ancestor(c, id, ancestor);  in bch2_snapshot_is_ancestor()
176 static inline bool bch2_snapshot_has_children(struct bch_fs *c, u32 id)  in bch2_snapshot_has_children()  argument
179 	const struct snapshot_t *t = snapshot_t(c, id);  in bch2_snapshot_has_children()
186 static inline bool snapshot_list_has_id(snapshot_id_list *s, u32 id)  in snapshot_list_has_id()  argument
189 		if (*i == id)  in snapshot_list_has_id()
194 static inline bool snapshot_list_has_ancestor(struct bch_fs *c, snapshot_id_list *s, u32 id)  in snapshot_list_has_ancestor()  argument
197 		if (bch2_snapshot_is_ancestor(c, id, *i))  in snapshot_list_has_ancestor()
202 static inline int snapshot_list_add(struct bch_fs *c, snapshot_id_list *s, u32 id)  in snapshot_list_add()  argument
204 	BUG_ON(snapshot_list_has_id(s, id));  in snapshot_list_add()
205 	int ret = darray_push(s, id);  in snapshot_list_add()
211 static inline int snapshot_list_add_nodup(struct bch_fs *c, snapshot_id_list *s, u32 id)  in snapshot_list_add_nodup()  argument
213 	int ret = snapshot_list_has_id(s, id)  in snapshot_list_add_nodup()
215 		: darray_push(s, id);  in snapshot_list_add_nodup()
232 int bch2_snapshot_lookup(struct btree_trans *trans, u32 id,
252 					  enum btree_id id,  in bch2_key_has_snapshot_overwrites()  argument
255 	if (!btree_type_has_snapshots(id) ||  in bch2_key_has_snapshot_overwrites()
259 	return __bch2_key_has_snapshot_overwrites(trans, id, pos);  in bch2_key_has_snapshot_overwrites()