Merge pull request #219 from xhebox/master

[bcachefs-tools-debian] / libbcachefs / snapshot.h

diff --git a/libbcachefs/snapshot.h b/libbcachefs/snapshot.h
index c59b7e9e64feac0d0ab765dd44e28ed54932b08e..7c66ffc06385ddea63685298f691660d906055d5 100644 (file)
--- a/libbcachefs/snapshot.h
+++ b/libbcachefs/snapshot.h
@@ -5,7 +5,7 @@
 enum bkey_invalid_flags;
 
 void bch2_snapshot_tree_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
-int bch2_snapshot_tree_invalid(const 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 *);
 
 #define bch2_bkey_ops_snapshot_tree ((struct bkey_ops) {       \
@@ -19,15 +19,15 @@ 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(const 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_mark_snapshot(struct btree_trans *, enum btree_id, unsigned,
-                      struct bkey_s_c, struct bkey_s_c, unsigned);
+                      struct bkey_s_c, struct bkey_s, unsigned);
 
 #define bch2_bkey_ops_snapshot ((struct bkey_ops) {            \
        .key_invalid    = bch2_snapshot_invalid,                \
        .val_to_text    = bch2_snapshot_to_text,                \
-       .atomic_trigger = bch2_mark_snapshot,                   \
+       .trigger        = bch2_mark_snapshot,                   \
        .min_val_size   = 24,                                   \
 })
 
@@ -202,8 +202,6 @@ static inline bool bch2_snapshot_has_children(struct bch_fs *c, u32 id)
 
 static inline bool snapshot_list_has_id(snapshot_id_list *s, u32 id)
 {
-       u32 *i;
-
        darray_for_each(*s, i)
                if (*i == id)
                        return true;
@@ -212,8 +210,6 @@ static inline bool snapshot_list_has_id(snapshot_id_list *s, u32 id)
 
 static inline bool snapshot_list_has_ancestor(struct bch_fs *c, snapshot_id_list *s, u32 id)
 {
-       u32 *i;
-
        darray_for_each(*s, i)
                if (bch2_snapshot_is_ancestor(c, id, *i))
                        return true;
@@ -235,8 +231,6 @@ int bch2_snapshot_lookup(struct btree_trans *trans, u32 id,
                         struct bch_snapshot *s);
 int bch2_snapshot_get_subvol(struct btree_trans *, u32,
                             struct bch_subvolume *);
-int bch2_snapshot_live(struct btree_trans *trans, u32 id);
-int bch2_snapshot_set_equiv(struct btree_trans *trans, struct bkey_s_c k);
 
 /* only exported for tests: */
 int bch2_snapshot_node_create(struct btree_trans *, u32,
@@ -244,6 +238,26 @@ int bch2_snapshot_node_create(struct btree_trans *, u32,
 
 int bch2_check_snapshot_trees(struct bch_fs *);
 int bch2_check_snapshots(struct bch_fs *);
+
+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);
+
+static inline int bch2_key_has_snapshot_overwrites(struct btree_trans *trans,
+                                         enum btree_id id,
+                                         struct bpos pos)
+{
+       if (!btree_type_has_snapshots(id) ||
+           bch2_snapshot_is_leaf(trans->c, pos.snapshot))
+               return 0;
+
+       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_snapshots_read(struct bch_fs *);
 void bch2_fs_snapshots_exit(struct bch_fs *);