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-rw-r--r--fs/bcachefs/snapshot.h275
1 files changed, 0 insertions, 275 deletions
diff --git a/fs/bcachefs/snapshot.h b/fs/bcachefs/snapshot.h
deleted file mode 100644
index 6766bf673ed9..000000000000
--- a/fs/bcachefs/snapshot.h
+++ /dev/null
@@ -1,275 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _BCACHEFS_SNAPSHOT_H
-#define _BCACHEFS_SNAPSHOT_H
-
-void bch2_snapshot_tree_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
-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_validate = bch2_snapshot_tree_validate, \
- .val_to_text = bch2_snapshot_tree_to_text, \
- .min_val_size = 8, \
-})
-
-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_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,
- enum btree_iter_update_trigger_flags);
-
-#define bch2_bkey_ops_snapshot ((struct bkey_ops) { \
- .key_validate = bch2_snapshot_validate, \
- .val_to_text = bch2_snapshot_to_text, \
- .trigger = bch2_mark_snapshot, \
- .min_val_size = 24, \
-})
-
-static inline struct snapshot_t *__snapshot_t(struct snapshot_table *t, u32 id)
-{
- u32 idx = U32_MAX - id;
-
- return likely(t && idx < t->nr)
- ? &t->s[idx]
- : NULL;
-}
-
-static inline const struct snapshot_t *snapshot_t(struct bch_fs *c, u32 id)
-{
- return __snapshot_t(rcu_dereference(c->snapshots), id);
-}
-
-static inline u32 bch2_snapshot_tree(struct bch_fs *c, u32 id)
-{
- guard(rcu)();
- const struct snapshot_t *s = snapshot_t(c, id);
- return s ? s->tree : 0;
-}
-
-static inline u32 __bch2_snapshot_parent_early(struct bch_fs *c, u32 id)
-{
- const struct snapshot_t *s = snapshot_t(c, id);
- return s ? s->parent : 0;
-}
-
-static inline u32 bch2_snapshot_parent_early(struct bch_fs *c, u32 id)
-{
- guard(rcu)();
- return __bch2_snapshot_parent_early(c, id);
-}
-
-static inline u32 __bch2_snapshot_parent(struct bch_fs *c, u32 id)
-{
- const struct snapshot_t *s = snapshot_t(c, id);
- if (!s)
- return 0;
-
- u32 parent = s->parent;
- 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",
- id, snapshot_t(c, id)->depth,
- parent, snapshot_t(c, parent)->depth);
-
- return parent;
-}
-
-static inline u32 bch2_snapshot_parent(struct bch_fs *c, u32 id)
-{
- guard(rcu)();
- return __bch2_snapshot_parent(c, id);
-}
-
-static inline u32 bch2_snapshot_nth_parent(struct bch_fs *c, u32 id, u32 n)
-{
- guard(rcu)();
- while (n--)
- id = __bch2_snapshot_parent(c, id);
- 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)
-{
- guard(rcu)();
-
- u32 parent;
- while ((parent = __bch2_snapshot_parent(c, id)))
- id = parent;
- return 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->state : SNAPSHOT_ID_empty;
-}
-
-static inline enum snapshot_id_state bch2_snapshot_id_state(struct bch_fs *c, u32 id)
-{
- guard(rcu)();
- return __bch2_snapshot_id_state(c, id);
-}
-
-static inline bool bch2_snapshot_exists(struct bch_fs *c, u32 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)
-{
- guard(rcu)();
- const struct snapshot_t *s = snapshot_t(c, id);
- return s ? s->children[0] : -BCH_ERR_invalid_snapshot_node;
-}
-
-static inline int bch2_snapshot_is_leaf(struct bch_fs *c, u32 id)
-{
- int ret = bch2_snapshot_is_internal_node(c, id);
- if (ret < 0)
- return ret;
- return !ret;
-}
-
-static inline u32 bch2_snapshot_depth(struct bch_fs *c, u32 parent)
-{
- guard(rcu)();
- return parent ? snapshot_t(c, parent)->depth + 1 : 0;
-}
-
-bool __bch2_snapshot_is_ancestor(struct bch_fs *, u32, u32);
-
-static inline bool bch2_snapshot_is_ancestor(struct bch_fs *c, u32 id, u32 ancestor)
-{
- return id == ancestor
- ? true
- : __bch2_snapshot_is_ancestor(c, id, ancestor);
-}
-
-static inline bool bch2_snapshot_has_children(struct bch_fs *c, u32 id)
-{
- guard(rcu)();
- const struct snapshot_t *t = snapshot_t(c, id);
- return t && (t->children[0]|t->children[1]) != 0;
-}
-
-static inline bool snapshot_list_has_id(snapshot_id_list *s, u32 id)
-{
- return darray_find(*s, id) != NULL;
-}
-
-static inline bool snapshot_list_has_ancestor(struct bch_fs *c, snapshot_id_list *s, u32 id)
-{
- darray_for_each(*s, i)
- if (bch2_snapshot_is_ancestor(c, id, *i))
- return true;
- return false;
-}
-
-static inline int snapshot_list_add(struct bch_fs *c, snapshot_id_list *s, u32 id)
-{
- BUG_ON(snapshot_list_has_id(s, id));
- int ret = darray_push(s, id);
- if (ret)
- bch_err(c, "error reallocating snapshot_id_list (size %zu)", s->size);
- return ret;
-}
-
-static inline int snapshot_list_add_nodup(struct bch_fs *c, snapshot_id_list *s, u32 id)
-{
- int ret = snapshot_list_has_id(s, id)
- ? 0
- : darray_push(s, id);
- if (ret)
- bch_err(c, "error reallocating snapshot_id_list (size %zu)", s->size);
- return ret;
-}
-
-static inline int snapshot_list_merge(struct bch_fs *c, snapshot_id_list *dst, snapshot_id_list *src)
-{
- darray_for_each(*src, i) {
- int ret = snapshot_list_add_nodup(c, dst, *i);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-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 *);
-
-/* only exported for tests: */
-int bch2_snapshot_node_create(struct btree_trans *, u32,
- u32 *, u32 *, unsigned);
-
-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_get_snapshot_overwrites(struct btree_trans *,
- enum btree_id, struct bpos,
- snapshot_id_list *);
-
-/*
- * Get a list of snapshot IDs that have overwritten a given key:
- */
-static inline int bch2_get_snapshot_overwrites(struct btree_trans *trans,
- enum btree_id btree, struct bpos pos,
- snapshot_id_list *s)
-{
- darray_init(s);
-
- return bch2_snapshot_has_children(trans->c, pos.snapshot)
- ? __bch2_get_snapshot_overwrites(trans, btree, pos, s)
- : 0;
-
-}
-
-int bch2_snapshot_node_set_deleted(struct btree_trans *, u32);
-
-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) > 0)
- return 0;
-
- return __bch2_key_has_snapshot_overwrites(trans, id, pos);
-}
-
-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 */
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-30 19:27:18 +0000