enum btree_node_type;
extern const char * const bch2_bkey_types[];
+extern const struct bkey_ops bch2_bkey_null_ops;
/*
* key_invalid: checks validity of @k, returns 0 if good or -EINVAL if bad. If
* being read or written; more aggressive checks can be enabled when rw == WRITE.
*/
struct bkey_ops {
- int (*key_invalid)(const struct bch_fs *c, struct bkey_s_c k,
- int rw, struct printbuf *err);
+ int (*key_invalid)(struct bch_fs *c, struct bkey_s_c k,
+ enum bkey_invalid_flags flags, struct printbuf *err);
void (*val_to_text)(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
void (*swab)(struct bkey_s);
bool (*key_normalize)(struct bch_fs *, struct bkey_s);
bool (*key_merge)(struct bch_fs *, struct bkey_s, struct bkey_s_c);
- int (*trans_trigger)(struct btree_trans *, enum btree_id, unsigned,
- struct bkey_s_c, struct bkey_i *, unsigned);
- int (*atomic_trigger)(struct btree_trans *, struct bkey_s_c,
- struct bkey_s_c, unsigned);
+ int (*trigger)(struct btree_trans *, enum btree_id, unsigned,
+ struct bkey_s_c, struct bkey_s, unsigned);
void (*compat)(enum btree_id id, unsigned version,
unsigned big_endian, int write,
struct bkey_s);
+
+ /* Size of value type when first created: */
+ unsigned min_val_size;
};
extern const struct bkey_ops bch2_bkey_ops[];
-int bch2_bkey_val_invalid(struct bch_fs *, struct bkey_s_c, int, struct printbuf *);
-int __bch2_bkey_invalid(struct bch_fs *, struct bkey_s_c,
- enum btree_node_type, int, struct printbuf *);
-int bch2_bkey_invalid(struct bch_fs *, struct bkey_s_c,
- enum btree_node_type, int, struct printbuf *);
-int bch2_bkey_in_btree_node(struct btree *, struct bkey_s_c, struct printbuf *);
+static inline const struct bkey_ops *bch2_bkey_type_ops(enum bch_bkey_type type)
+{
+ return likely(type < KEY_TYPE_MAX)
+ ? &bch2_bkey_ops[type]
+ : &bch2_bkey_null_ops;
+}
+
+int bch2_bkey_val_invalid(struct bch_fs *, struct bkey_s_c,
+ enum bkey_invalid_flags, struct printbuf *);
+int __bch2_bkey_invalid(struct bch_fs *, struct bkey_s_c, enum btree_node_type,
+ enum bkey_invalid_flags, struct printbuf *);
+int bch2_bkey_invalid(struct bch_fs *, struct bkey_s_c, enum btree_node_type,
+ enum bkey_invalid_flags, struct printbuf *);
+int bch2_bkey_in_btree_node(struct bch_fs *, struct btree *,
+ struct bkey_s_c, struct printbuf *);
void bch2_bpos_to_text(struct printbuf *, struct bpos);
void bch2_bkey_to_text(struct printbuf *, const struct bkey *);
{
return l->type == r->type &&
!bversion_cmp(l->version, r->version) &&
- bpos_eq(l->p, bkey_start_pos(r)) &&
- (u64) l->size + r->size <= KEY_SIZE_MAX &&
- bch2_bkey_ops[l->type].key_merge &&
- !bch2_key_merging_disabled;
+ bpos_eq(l->p, bkey_start_pos(r));
}
bool bch2_bkey_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
-static inline int bch2_mark_key(struct btree_trans *trans,
- struct bkey_s_c old,
- struct bkey_s_c new,
- unsigned flags)
-{
- const struct bkey_ops *ops = &bch2_bkey_ops[old.k->type ?: new.k->type];
-
- return ops->atomic_trigger
- ? ops->atomic_trigger(trans, old, new, flags)
- : 0;
-}
-
enum btree_update_flags {
- __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE,
+ __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE = __BTREE_ITER_FLAGS_END,
+ __BTREE_UPDATE_NOJOURNAL,
__BTREE_UPDATE_KEY_CACHE_RECLAIM,
- __BTREE_TRIGGER_NORUN, /* Don't run triggers at all */
-
+ __BTREE_TRIGGER_NORUN,
+ __BTREE_TRIGGER_TRANSACTIONAL,
+ __BTREE_TRIGGER_ATOMIC,
+ __BTREE_TRIGGER_GC,
__BTREE_TRIGGER_INSERT,
__BTREE_TRIGGER_OVERWRITE,
-
- __BTREE_TRIGGER_GC,
__BTREE_TRIGGER_BUCKET_INVALIDATE,
- __BTREE_TRIGGER_NOATOMIC,
};
#define BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE (1U << __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE)
+#define BTREE_UPDATE_NOJOURNAL (1U << __BTREE_UPDATE_NOJOURNAL)
#define BTREE_UPDATE_KEY_CACHE_RECLAIM (1U << __BTREE_UPDATE_KEY_CACHE_RECLAIM)
+/* Don't run triggers at all */
#define BTREE_TRIGGER_NORUN (1U << __BTREE_TRIGGER_NORUN)
+/*
+ * If set, we're running transactional triggers as part of a transaction commit:
+ * triggers may generate new updates
+ *
+ * If cleared, and either BTREE_TRIGGER_INSERT|BTREE_TRIGGER_OVERWRITE are set,
+ * we're running atomic triggers during a transaction commit: we have our
+ * journal reservation, we're holding btree node write locks, and we know the
+ * transaction is going to commit (returning an error here is a fatal error,
+ * causing us to go emergency read-only)
+ */
+#define BTREE_TRIGGER_TRANSACTIONAL (1U << __BTREE_TRIGGER_TRANSACTIONAL)
+#define BTREE_TRIGGER_ATOMIC (1U << __BTREE_TRIGGER_ATOMIC)
+
+/* We're in gc/fsck: running triggers to recalculate e.g. disk usage */
+#define BTREE_TRIGGER_GC (1U << __BTREE_TRIGGER_GC)
+
+/* @new is entering the btree */
#define BTREE_TRIGGER_INSERT (1U << __BTREE_TRIGGER_INSERT)
+
+/* @old is leaving the btree */
#define BTREE_TRIGGER_OVERWRITE (1U << __BTREE_TRIGGER_OVERWRITE)
-#define BTREE_TRIGGER_GC (1U << __BTREE_TRIGGER_GC)
+/* signal from bucket invalidate path to alloc trigger */
#define BTREE_TRIGGER_BUCKET_INVALIDATE (1U << __BTREE_TRIGGER_BUCKET_INVALIDATE)
-#define BTREE_TRIGGER_NOATOMIC (1U << __BTREE_TRIGGER_NOATOMIC)
-
-#define BTREE_TRIGGER_WANTS_OLD_AND_NEW \
- ((1U << KEY_TYPE_alloc)| \
- (1U << KEY_TYPE_alloc_v2)| \
- (1U << KEY_TYPE_alloc_v3)| \
- (1U << KEY_TYPE_alloc_v4)| \
- (1U << KEY_TYPE_stripe)| \
- (1U << KEY_TYPE_inode)| \
- (1U << KEY_TYPE_inode_v2)| \
- (1U << KEY_TYPE_snapshot))
-
-static inline int bch2_trans_mark_key(struct btree_trans *trans,
- enum btree_id btree_id, unsigned level,
- struct bkey_s_c old, struct bkey_i *new,
- unsigned flags)
+
+static inline int bch2_key_trigger(struct btree_trans *trans,
+ enum btree_id btree, unsigned level,
+ struct bkey_s_c old, struct bkey_s new,
+ unsigned flags)
{
- const struct bkey_ops *ops = &bch2_bkey_ops[old.k->type ?: new->k.type];
+ const struct bkey_ops *ops = bch2_bkey_type_ops(old.k->type ?: new.k->type);
- return ops->trans_trigger
- ? ops->trans_trigger(trans, btree_id, level, old, new, flags)
+ return ops->trigger
+ ? ops->trigger(trans, btree, level, old, new, flags)
: 0;
}
-static inline int bch2_trans_mark_old(struct btree_trans *trans,
- enum btree_id btree_id, unsigned level,
- struct bkey_s_c old, unsigned flags)
+static inline int bch2_key_trigger_old(struct btree_trans *trans,
+ enum btree_id btree_id, unsigned level,
+ struct bkey_s_c old, unsigned flags)
{
struct bkey_i deleted;
bkey_init(&deleted.k);
deleted.k.p = old.k->p;
- return bch2_trans_mark_key(trans, btree_id, level, old, &deleted,
- BTREE_TRIGGER_OVERWRITE|flags);
+ return bch2_key_trigger(trans, btree_id, level, old, bkey_i_to_s(&deleted),
+ BTREE_TRIGGER_OVERWRITE|flags);
}
-static inline int bch2_trans_mark_new(struct btree_trans *trans,
- enum btree_id btree_id, unsigned level,
- struct bkey_i *new, unsigned flags)
+static inline int bch2_key_trigger_new(struct btree_trans *trans,
+ enum btree_id btree_id, unsigned level,
+ struct bkey_s new, unsigned flags)
{
struct bkey_i deleted;
bkey_init(&deleted.k);
- deleted.k.p = new->k.p;
+ deleted.k.p = new.k->p;
- return bch2_trans_mark_key(trans, btree_id, level, bkey_i_to_s_c(&deleted), new,
- BTREE_TRIGGER_INSERT|flags);
+ return bch2_key_trigger(trans, btree_id, level, bkey_i_to_s_c(&deleted), new,
+ BTREE_TRIGGER_INSERT|flags);
}
void bch2_bkey_renumber(enum btree_node_type, struct bkey_packed *, int);
projects / bcachefs-tools-debian / blobdiff