diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:00:02 -0500 |
---|---|---|
committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:17:23 -0500 |
commit | b5fd066153c40a70a29caa1ea7987723ab687763 (patch) | |
tree | 6d43a8b0a90d549a54c65565ac96c92b3e84b594 /c_src/libbcachefs/snapshot.h | |
parent | 06ff8b55b70fda44d91b31b5511fafd1680a8934 (diff) |
Move c_src dirs back to toplevel
We just wanted c sourcefiles out of the top level, not c source
directories.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'c_src/libbcachefs/snapshot.h')
-rw-r--r-- | c_src/libbcachefs/snapshot.h | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/c_src/libbcachefs/snapshot.h b/c_src/libbcachefs/snapshot.h deleted file mode 100644 index 7c66ffc0..00000000 --- a/c_src/libbcachefs/snapshot.h +++ /dev/null @@ -1,264 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#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 *); - -#define bch2_bkey_ops_snapshot_tree ((struct bkey_ops) { \ - .key_invalid = bch2_snapshot_tree_invalid, \ - .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_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, unsigned); - -#define bch2_bkey_ops_snapshot ((struct bkey_ops) { \ - .key_invalid = bch2_snapshot_invalid, \ - .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) -{ - return &t->s[U32_MAX - id]; -} - -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) -{ - rcu_read_lock(); - id = snapshot_t(c, id)->tree; - rcu_read_unlock(); - - return id; -} - -static inline u32 __bch2_snapshot_parent_early(struct bch_fs *c, u32 id) -{ - return snapshot_t(c, id)->parent; -} - -static inline u32 bch2_snapshot_parent_early(struct bch_fs *c, u32 id) -{ - rcu_read_lock(); - id = __bch2_snapshot_parent_early(c, id); - rcu_read_unlock(); - - return id; -} - -static inline u32 __bch2_snapshot_parent(struct bch_fs *c, u32 id) -{ -#ifdef CONFIG_BCACHEFS_DEBUG - u32 parent = snapshot_t(c, id)->parent; - - if (parent && - snapshot_t(c, id)->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; -#else - return snapshot_t(c, id)->parent; -#endif -} - -static inline u32 bch2_snapshot_parent(struct bch_fs *c, u32 id) -{ - rcu_read_lock(); - id = __bch2_snapshot_parent(c, id); - rcu_read_unlock(); - - return id; -} - -static inline u32 bch2_snapshot_nth_parent(struct bch_fs *c, u32 id, u32 n) -{ - rcu_read_lock(); - while (n--) - id = __bch2_snapshot_parent(c, id); - rcu_read_unlock(); - - return id; -} - -u32 bch2_snapshot_skiplist_get(struct bch_fs *, u32); - -static inline u32 bch2_snapshot_root(struct bch_fs *c, u32 id) -{ - u32 parent; - - rcu_read_lock(); - while ((parent = __bch2_snapshot_parent(c, id))) - id = parent; - rcu_read_unlock(); - - return id; -} - -static inline u32 __bch2_snapshot_equiv(struct bch_fs *c, u32 id) -{ - return snapshot_t(c, id)->equiv; -} - -static inline u32 bch2_snapshot_equiv(struct bch_fs *c, u32 id) -{ - rcu_read_lock(); - id = __bch2_snapshot_equiv(c, id); - rcu_read_unlock(); - - return id; -} - -static inline bool bch2_snapshot_is_equiv(struct bch_fs *c, u32 id) -{ - return id == bch2_snapshot_equiv(c, id); -} - -static inline bool bch2_snapshot_is_internal_node(struct bch_fs *c, u32 id) -{ - const struct snapshot_t *s; - bool ret; - - rcu_read_lock(); - s = snapshot_t(c, id); - ret = s->children[0]; - rcu_read_unlock(); - - return ret; -} - -static inline u32 bch2_snapshot_is_leaf(struct bch_fs *c, u32 id) -{ - return !bch2_snapshot_is_internal_node(c, id); -} - -static inline u32 bch2_snapshot_sibling(struct bch_fs *c, u32 id) -{ - const struct snapshot_t *s; - u32 parent = __bch2_snapshot_parent(c, id); - - if (!parent) - return 0; - - s = snapshot_t(c, __bch2_snapshot_parent(c, id)); - if (id == s->children[0]) - return s->children[1]; - if (id == s->children[1]) - return s->children[0]; - return 0; -} - -static inline u32 bch2_snapshot_depth(struct bch_fs *c, u32 parent) -{ - u32 depth; - - rcu_read_lock(); - depth = parent ? snapshot_t(c, parent)->depth + 1 : 0; - rcu_read_unlock(); - - return depth; -} - -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) -{ - const struct snapshot_t *t; - bool ret; - - rcu_read_lock(); - t = snapshot_t(c, id); - ret = (t->children[0]|t->children[1]) != 0; - rcu_read_unlock(); - - return ret; -} - -static inline bool snapshot_list_has_id(snapshot_id_list *s, u32 id) -{ - darray_for_each(*s, i) - if (*i == id) - return true; - return false; -} - -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) -{ - int ret; - - BUG_ON(snapshot_list_has_id(s, id)); - ret = darray_push(s, id); - if (ret) - bch_err(c, "error reallocating snapshot_id_list (size %zu)", s->size); - return ret; -} - -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_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 *); - -#endif /* _BCACHEFS_SNAPSHOT_H */ |