+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _BCACHEFS_BKEY_METHODS_H
-#define _BCACHEFS_BKEY_METHODS_H
-
-#include "bkey.h"
-
-struct bch_fs;
-struct btree;
-struct btree_trans;
-struct bkey;
-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
- * invalid, entire key will be deleted.
- *
- * When invalid, error string is returned via @err. @rw indicates whether key is
- * being read or written; more aggressive checks can be enabled when rw == WRITE.
- */
-struct bkey_ops {
- 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 (*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[];
-
-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 *);
-void bch2_val_to_text(struct printbuf *, struct bch_fs *,
- struct bkey_s_c);
-void bch2_bkey_val_to_text(struct printbuf *, struct bch_fs *,
- struct bkey_s_c);
-
-void bch2_bkey_swab_val(struct bkey_s);
-
-bool bch2_bkey_normalize(struct bch_fs *, struct bkey_s);
-
-static inline bool bch2_bkey_maybe_mergable(const struct bkey *l, const struct bkey *r)
-{
- return l->type == r->type &&
- !bversion_cmp(l->version, r->version) &&
- bpos_eq(l->p, bkey_start_pos(r));
-}
-
-bool bch2_bkey_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
-
-enum btree_update_flags {
- __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE = __BTREE_ITER_FLAGS_END,
- __BTREE_UPDATE_NOJOURNAL,
- __BTREE_UPDATE_KEY_CACHE_RECLAIM,
-
- __BTREE_TRIGGER_NORUN,
- __BTREE_TRIGGER_TRANSACTIONAL,
- __BTREE_TRIGGER_INSERT,
- __BTREE_TRIGGER_OVERWRITE,
- __BTREE_TRIGGER_GC,
- __BTREE_TRIGGER_BUCKET_INVALIDATE,
-};
-
-#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)
-
-/* @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)
-
-/* We're in gc/fsck: running triggers to recalculate e.g. disk usage */
-#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)
-
-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_type_ops(old.k->type ?: new.k->type);
-
- return ops->trigger
- ? ops->trigger(trans, btree, level, old, new, flags)
- : 0;
-}
-
-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_key_trigger(trans, btree_id, level, old, bkey_i_to_s(&deleted),
- BTREE_TRIGGER_OVERWRITE|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;
-
- 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);
-
-void __bch2_bkey_compat(unsigned, enum btree_id, unsigned, unsigned,
- int, struct bkey_format *, struct bkey_packed *);
-
-static inline void bch2_bkey_compat(unsigned level, enum btree_id btree_id,
- unsigned version, unsigned big_endian,
- int write,
- struct bkey_format *f,
- struct bkey_packed *k)
-{
- if (version < bcachefs_metadata_version_current ||
- big_endian != CPU_BIG_ENDIAN)
- __bch2_bkey_compat(level, btree_id, version,
- big_endian, write, f, k);
-
-}
-
-#endif /* _BCACHEFS_BKEY_METHODS_H */
projects / bcachefs-tools-debian / blobdiff