backpointers.h | Explore in Territory

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BACKPOINTERS_BACKGROUND_H
#define _BCACHEFS_BACKPOINTERS_BACKGROUND_H

#include "btree_cache.h"
#include "btree_iter.h"
#include "btree_update.h"
#include "buckets.h"
#include "error.h"
#include "super.h"

static inline u64 swab40(u64 x)
{ … }

int bch2_backpointer_invalid(struct bch_fs *, struct bkey_s_c k,
			     enum bch_validate_flags, struct printbuf *);
void bch2_backpointer_to_text(struct printbuf *, const struct bch_backpointer *);
void bch2_backpointer_k_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
void bch2_backpointer_swab(struct bkey_s);

#define bch2_bkey_ops_backpointer …

#define MAX_EXTENT_COMPRESS_RATIO_SHIFT …

/*
 * Convert from pos in backpointer btree to pos of corresponding bucket in alloc
 * btree:
 */
static inline struct bpos bp_pos_to_bucket(const struct bch_dev *ca, struct bpos bp_pos)
{ … }

static inline bool bp_pos_to_bucket_nodev_noerror(struct bch_fs *c, struct bpos bp_pos, struct bpos *bucket)
{ … }

static inline bool bp_pos_to_bucket_nodev(struct bch_fs *c, struct bpos bp_pos, struct bpos *bucket)
{ … }

static inline struct bpos bucket_pos_to_bp_noerror(const struct bch_dev *ca,
						   struct bpos bucket,
						   u64 bucket_offset)
{ … }

/*
 * Convert from pos in alloc btree + bucket offset to pos in backpointer btree:
 */
static inline struct bpos bucket_pos_to_bp(const struct bch_dev *ca,
					   struct bpos bucket,
					   u64 bucket_offset)
{ … }

int bch2_bucket_backpointer_mod_nowritebuffer(struct btree_trans *, struct bch_dev *,
				struct bpos bucket, struct bch_backpointer, struct bkey_s_c, bool);

static inline int bch2_bucket_backpointer_mod(struct btree_trans *trans,
				struct bch_dev *ca,
				struct bpos bucket,
				struct bch_backpointer bp,
				struct bkey_s_c orig_k,
				bool insert)
{ … }

static inline enum bch_data_type bch2_bkey_ptr_data_type(struct bkey_s_c k,
							 struct extent_ptr_decoded p,
							 const union bch_extent_entry *entry)
{ … }

static inline void bch2_extent_ptr_to_bp(struct bch_fs *c, struct bch_dev *ca,
			   enum btree_id btree_id, unsigned level,
			   struct bkey_s_c k, struct extent_ptr_decoded p,
			   const union bch_extent_entry *entry,
			   struct bpos *bucket_pos, struct bch_backpointer *bp)
{ … }

int bch2_get_next_backpointer(struct btree_trans *, struct bch_dev *ca, struct bpos, int,
			      struct bpos *, struct bch_backpointer *, unsigned);
struct bkey_s_c bch2_backpointer_get_key(struct btree_trans *, struct btree_iter *,
					 struct bpos, struct bch_backpointer,
					 unsigned);
struct btree *bch2_backpointer_get_node(struct btree_trans *, struct btree_iter *,
					struct bpos, struct bch_backpointer);

int bch2_check_btree_backpointers(struct bch_fs *);
int bch2_check_extents_to_backpointers(struct bch_fs *);
int bch2_check_backpointers_to_extents(struct bch_fs *);

#endif /* _BCACHEFS_BACKPOINTERS_BACKGROUND_H */
linux/fs/bcachefs/backpointers.h
