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59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_BACKPOINTERS_BACKGROUND_H
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#define _BCACHEFS_BACKPOINTERS_BACKGROUND_H
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#include "buckets.h"
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#include "super.h"
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int bch2_backpointer_invalid(const struct bch_fs *, struct bkey_s_c k,
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int, struct printbuf *);
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void bch2_backpointer_to_text(struct printbuf *, const struct bch_backpointer *);
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void bch2_backpointer_k_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
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void bch2_backpointer_swab(struct bkey_s);
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#define bch2_bkey_ops_backpointer ((struct bkey_ops) { \
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.key_invalid = bch2_backpointer_invalid, \
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.val_to_text = bch2_backpointer_k_to_text, \
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.swab = bch2_backpointer_swab, \
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})
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#define MAX_EXTENT_COMPRESS_RATIO_SHIFT 10
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static inline void bch2_extent_ptr_to_bp(struct bch_fs *c,
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enum btree_id btree_id, unsigned level,
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struct bkey_s_c k, struct extent_ptr_decoded p,
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struct bpos *bucket_pos, struct bch_backpointer *bp)
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{
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enum bch_data_type data_type = level ? BCH_DATA_btree : BCH_DATA_user;
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s64 sectors = level ? btree_sectors(c) : k.k->size;
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u32 bucket_offset;
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*bucket_pos = PTR_BUCKET_POS_OFFSET(c, &p.ptr, &bucket_offset);
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*bp = (struct bch_backpointer) {
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.btree_id = btree_id,
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.level = level,
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.data_type = data_type,
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.bucket_offset = ((u64) bucket_offset << MAX_EXTENT_COMPRESS_RATIO_SHIFT) +
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p.crc.offset,
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.bucket_len = ptr_disk_sectors(sectors, p),
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.pos = k.k->p,
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};
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}
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int bch2_bucket_backpointer_del(struct btree_trans *, struct bkey_i_alloc_v4 *,
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struct bch_backpointer, struct bkey_s_c);
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int bch2_bucket_backpointer_add(struct btree_trans *, struct bkey_i_alloc_v4 *,
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struct bch_backpointer, struct bkey_s_c);
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int bch2_get_next_backpointer(struct btree_trans *, struct bpos, int,
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u64 *, struct bch_backpointer *, unsigned);
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struct bkey_s_c bch2_backpointer_get_key(struct btree_trans *, struct btree_iter *,
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struct bpos, u64, struct bch_backpointer);
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struct btree *bch2_backpointer_get_node(struct btree_trans *, struct btree_iter *,
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struct bpos, u64, struct bch_backpointer);
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int bch2_check_btree_backpointers(struct bch_fs *);
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int bch2_check_extents_to_backpointers(struct bch_fs *);
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int bch2_check_backpointers_to_extents(struct bch_fs *);
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#endif /* _BCACHEFS_BACKPOINTERS_BACKGROUND_H */
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