+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BTREE_UPDATE_H
#define _BCACHEFS_BTREE_UPDATE_H
struct bch_fs;
struct btree;
-struct btree_insert;
-
-void bch2_btree_node_lock_for_insert(struct bch_fs *, struct btree *,
- struct btree_iter *);
-bool bch2_btree_bset_insert_key(struct btree_iter *, struct btree *,
- struct btree_node_iter *, struct bkey_i *);
-void bch2_btree_journal_key(struct btree_insert *trans, struct btree_iter *,
- struct bkey_i *);
-
-/* Normal update interface: */
-
-struct btree_insert {
- struct bch_fs *c;
- struct disk_reservation *disk_res;
- struct journal_res journal_res;
- u64 *journal_seq;
- unsigned flags;
- bool did_work;
-
- unsigned short nr;
- struct btree_insert_entry *entries;
-};
-
-int __bch2_btree_insert_at(struct btree_insert *);
-
-#define BTREE_INSERT_ENTRY(_iter, _k) \
- ((struct btree_insert_entry) { \
- .iter = (_iter), \
- .k = (_k), \
- })
-/**
- * bch_btree_insert_at - insert one or more keys at iterator positions
- * @iter: btree iterator
- * @insert_key: key to insert
- * @disk_res: disk reservation
- * @hook: extent insert callback
- *
- * Return values:
- * -EINTR: locking changed, this function should be called again. Only returned
- * if passed BTREE_INSERT_ATOMIC.
- * -EROFS: filesystem read only
- * -EIO: journal or btree node IO error
- */
-#define bch2_btree_insert_at(_c, _disk_res, _journal_seq, _flags, ...) \
- __bch2_btree_insert_at(&(struct btree_insert) { \
- .c = (_c), \
- .disk_res = (_disk_res), \
- .journal_seq = (_journal_seq), \
- .flags = (_flags), \
- .nr = COUNT_ARGS(__VA_ARGS__), \
- .entries = (struct btree_insert_entry[]) { \
- __VA_ARGS__ \
- }})
-
-enum {
- __BTREE_INSERT_ATOMIC,
- __BTREE_INSERT_NOUNLOCK,
- __BTREE_INSERT_NOFAIL,
+void bch2_btree_node_lock_for_insert(struct btree_trans *, struct btree_path *,
+ struct btree *);
+bool bch2_btree_bset_insert_key(struct btree_trans *, struct btree_path *,
+ struct btree *, struct btree_node_iter *,
+ struct bkey_i *);
+void bch2_btree_add_journal_pin(struct bch_fs *, struct btree *, u64);
+
+enum btree_insert_flags {
+ /* First two bits for journal watermark: */
+ __BTREE_INSERT_NOFAIL = 2,
+ __BTREE_INSERT_NOCHECK_RW,
+ __BTREE_INSERT_LAZY_RW,
__BTREE_INSERT_USE_RESERVE,
- __BTREE_INSERT_USE_ALLOC_RESERVE,
__BTREE_INSERT_JOURNAL_REPLAY,
+ __BTREE_INSERT_JOURNAL_RECLAIM,
__BTREE_INSERT_NOWAIT,
__BTREE_INSERT_GC_LOCK_HELD,
__BCH_HASH_SET_MUST_CREATE,
__BCH_HASH_SET_MUST_REPLACE,
};
-/*
- * Don't drop/retake locks before doing btree update, instead return -EINTR if
- * we had to drop locks for any reason
- */
-#define BTREE_INSERT_ATOMIC (1 << __BTREE_INSERT_ATOMIC)
-
-/*
- * Don't drop locks _after_ successfully updating btree:
- */
-#define BTREE_INSERT_NOUNLOCK (1 << __BTREE_INSERT_NOUNLOCK)
-
/* Don't check for -ENOSPC: */
#define BTREE_INSERT_NOFAIL (1 << __BTREE_INSERT_NOFAIL)
+#define BTREE_INSERT_NOCHECK_RW (1 << __BTREE_INSERT_NOCHECK_RW)
+#define BTREE_INSERT_LAZY_RW (1 << __BTREE_INSERT_LAZY_RW)
+
/* for copygc, or when merging btree nodes */
#define BTREE_INSERT_USE_RESERVE (1 << __BTREE_INSERT_USE_RESERVE)
-#define BTREE_INSERT_USE_ALLOC_RESERVE (1 << __BTREE_INSERT_USE_ALLOC_RESERVE)
-/*
- * Insert is for journal replay: don't get journal reservations, or mark extents
- * (bch_mark_key)
- */
+/* Insert is for journal replay - don't get journal reservations: */
#define BTREE_INSERT_JOURNAL_REPLAY (1 << __BTREE_INSERT_JOURNAL_REPLAY)
+/* Insert is being called from journal reclaim path: */
+#define BTREE_INSERT_JOURNAL_RECLAIM (1 << __BTREE_INSERT_JOURNAL_RECLAIM)
+
/* Don't block on allocation failure (for new btree nodes: */
#define BTREE_INSERT_NOWAIT (1 << __BTREE_INSERT_NOWAIT)
#define BTREE_INSERT_GC_LOCK_HELD (1 << __BTREE_INSERT_GC_LOCK_HELD)
#define BCH_HASH_SET_MUST_CREATE (1 << __BCH_HASH_SET_MUST_CREATE)
#define BCH_HASH_SET_MUST_REPLACE (1 << __BCH_HASH_SET_MUST_REPLACE)
-int bch2_btree_delete_at(struct btree_iter *, unsigned);
-
-int bch2_btree_insert_list_at(struct btree_iter *, struct keylist *,
- struct disk_reservation *, u64 *, unsigned);
+int bch2_btree_delete_extent_at(struct btree_trans *, struct btree_iter *,
+ unsigned, unsigned);
+int bch2_btree_delete_at(struct btree_trans *, struct btree_iter *, unsigned);
+int __bch2_btree_insert(struct btree_trans *, enum btree_id, struct bkey_i *);
int bch2_btree_insert(struct bch_fs *, enum btree_id, struct bkey_i *,
struct disk_reservation *, u64 *, int flags);
+int bch2_btree_delete_range_trans(struct btree_trans *, enum btree_id,
+ struct bpos, struct bpos, unsigned, u64 *);
int bch2_btree_delete_range(struct bch_fs *, enum btree_id,
- struct bpos, struct bpos, u64 *);
+ struct bpos, struct bpos, unsigned, u64 *);
+
+int bch2_btree_node_rewrite(struct btree_trans *, struct btree_iter *,
+ struct btree *, unsigned);
+void bch2_btree_node_rewrite_async(struct bch_fs *, struct btree *);
+int bch2_btree_node_update_key(struct btree_trans *, struct btree_iter *,
+ struct btree *, struct bkey_i *, bool);
+int bch2_btree_node_update_key_get_iter(struct btree_trans *,
+ struct btree *, struct bkey_i *, bool);
-int bch2_btree_node_rewrite(struct bch_fs *c, struct btree_iter *,
- __le64, unsigned);
-int bch2_btree_node_update_key(struct bch_fs *, struct btree_iter *,
- struct btree *, struct bkey_i_extent *);
+int bch2_trans_update_extent(struct btree_trans *, struct btree_iter *,
+ struct bkey_i *, enum btree_update_flags);
-/* new transactional interface: */
+int __must_check bch2_trans_update(struct btree_trans *, struct btree_iter *,
+ struct bkey_i *, enum btree_update_flags);
-static inline void
-bch2_trans_update(struct btree_trans *trans,
- struct btree_insert_entry entry)
+void bch2_trans_commit_hook(struct btree_trans *,
+ struct btree_trans_commit_hook *);
+int __bch2_trans_commit(struct btree_trans *);
+
+int bch2_trans_log_msg(struct btree_trans *, const char *);
+
+/**
+ * bch2_trans_commit - insert keys at given iterator positions
+ *
+ * This is main entry point for btree updates.
+ *
+ * Return values:
+ * -EINTR: locking changed, this function should be called again.
+ * -EROFS: filesystem read only
+ * -EIO: journal or btree node IO error
+ */
+static inline int bch2_trans_commit(struct btree_trans *trans,
+ struct disk_reservation *disk_res,
+ u64 *journal_seq,
+ unsigned flags)
{
- BUG_ON(trans->nr_updates >= ARRAY_SIZE(trans->updates));
+ trans->disk_res = disk_res;
+ trans->journal_seq = journal_seq;
+ trans->flags = flags;
- trans->updates[trans->nr_updates++] = entry;
+ return __bch2_trans_commit(trans);
}
-int bch2_trans_commit(struct btree_trans *,
- struct disk_reservation *,
- u64 *, unsigned);
-
-#define bch2_trans_do(_c, _journal_seq, _flags, _do) \
+#define lockrestart_do(_trans, _do) \
({ \
- struct btree_trans trans; \
int _ret; \
\
- bch2_trans_init(&trans, (_c)); \
- \
do { \
- bch2_trans_begin(&trans); \
- \
- _ret = (_do) ?: bch2_trans_commit(&trans, NULL, \
- (_journal_seq), (_flags)); \
+ bch2_trans_begin(_trans); \
+ _ret = (_do); \
} while (_ret == -EINTR); \
\
+ _ret; \
+})
+
+#define commit_do(_trans, _disk_res, _journal_seq, _flags, _do) \
+ lockrestart_do(_trans, _do ?: bch2_trans_commit(_trans, (_disk_res),\
+ (_journal_seq), (_flags)))
+
+#define bch2_trans_do(_c, _disk_res, _journal_seq, _flags, _do) \
+({ \
+ struct btree_trans trans; \
+ int _ret; \
+ \
+ bch2_trans_init(&trans, (_c), 0, 0); \
+ _ret = commit_do(&trans, _disk_res, _journal_seq, _flags, _do); \
bch2_trans_exit(&trans); \
+ \
_ret; \
})
+#define trans_for_each_update(_trans, _i) \
+ for ((_i) = (_trans)->updates; \
+ (_i) < (_trans)->updates + (_trans)->nr_updates; \
+ (_i)++)
+
+static inline void bch2_trans_reset_updates(struct btree_trans *trans)
+{
+ struct btree_insert_entry *i;
+
+ trans_for_each_update(trans, i)
+ bch2_path_put(trans, i->path, true);
+
+ trans->extra_journal_res = 0;
+ trans->nr_updates = 0;
+ trans->hooks = NULL;
+ trans->extra_journal_entries.nr = 0;
+}
+
#endif /* _BCACHEFS_BTREE_UPDATE_H */