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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BKEY_METHODS_H
#define _BCACHEFS_BKEY_METHODS_H
#include "bkey.h"
#define DEF_BTREE_ID(kwd, val, name) BKEY_TYPE_##kwd = val,
enum bkey_type {
DEFINE_BCH_BTREE_IDS()
BKEY_TYPE_BTREE,
};
#undef DEF_BTREE_ID
/* Type of a key in btree @id at level @level: */
static inline enum bkey_type bkey_type(unsigned level, enum btree_id id)
{
return level ? BKEY_TYPE_BTREE : (enum bkey_type) id;
}
struct bch_fs;
struct btree;
struct bkey;
enum merge_result {
BCH_MERGE_NOMERGE,
/*
* The keys were mergeable, but would have overflowed size - so instead
* l was changed to the maximum size, and both keys were modified:
*/
BCH_MERGE_PARTIAL,
BCH_MERGE_MERGE,
};
typedef bool (*key_filter_fn)(struct bch_fs *, struct btree *,
struct bkey_s);
typedef enum merge_result (*key_merge_fn)(struct bch_fs *,
struct btree *,
struct bkey_i *, struct bkey_i *);
struct bkey_ops {
/* Returns reason for being invalid if invalid, else NULL: */
const char * (*key_invalid)(const struct bch_fs *,
struct bkey_s_c);
void (*key_debugcheck)(struct bch_fs *, struct btree *,
struct bkey_s_c);
void (*val_to_text)(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
void (*swab)(const struct bkey_format *, struct bkey_packed *);
key_filter_fn key_normalize;
key_merge_fn key_merge;
bool is_extents;
};
static inline bool bkey_type_needs_gc(enum bkey_type type)
{
switch (type) {
case BKEY_TYPE_BTREE:
case BKEY_TYPE_EXTENTS:
case BKEY_TYPE_EC:
return true;
default:
return false;
}
}
const char *bch2_bkey_val_invalid(struct bch_fs *, enum bkey_type,
struct bkey_s_c);
const char *__bch2_bkey_invalid(struct bch_fs *, enum bkey_type, struct bkey_s_c);
const char *bch2_bkey_invalid(struct bch_fs *, enum bkey_type, struct bkey_s_c);
const char *bch2_bkey_in_btree_node(struct btree *, struct bkey_s_c);
void bch2_bkey_debugcheck(struct bch_fs *, struct btree *, struct bkey_s_c);
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 *, enum bkey_type,
struct bkey_s_c);
void bch2_bkey_val_to_text(struct printbuf *, struct bch_fs *,
enum bkey_type, struct bkey_s_c);
void bch2_bkey_swab(enum bkey_type, const struct bkey_format *,
struct bkey_packed *);
extern const struct bkey_ops bch2_bkey_ops[];
#endif /* _BCACHEFS_BKEY_METHODS_H */
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