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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BCACHEFS_LRU_H3#define _BCACHEFS_LRU_H4 5static inline u64 lru_pos_id(struct bpos pos)6{7 return pos.inode >> LRU_TIME_BITS;8}9 10static inline u64 lru_pos_time(struct bpos pos)11{12 return pos.inode & ~(~0ULL << LRU_TIME_BITS);13}14 15static inline struct bpos lru_pos(u16 lru_id, u64 dev_bucket, u64 time)16{17 struct bpos pos = POS(((u64) lru_id << LRU_TIME_BITS)|time, dev_bucket);18 19 EBUG_ON(time > LRU_TIME_MAX);20 EBUG_ON(lru_pos_id(pos) != lru_id);21 EBUG_ON(lru_pos_time(pos) != time);22 EBUG_ON(pos.offset != dev_bucket);23 24 return pos;25}26 27static inline enum bch_lru_type lru_type(struct bkey_s_c l)28{29 u16 lru_id = l.k->p.inode >> 48;30 31 if (lru_id == BCH_LRU_FRAGMENTATION_START)32 return BCH_LRU_fragmentation;33 return BCH_LRU_read;34}35 36int bch2_lru_validate(struct bch_fs *, struct bkey_s_c, enum bch_validate_flags);37void bch2_lru_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);38 39void bch2_lru_pos_to_text(struct printbuf *, struct bpos);40 41#define bch2_bkey_ops_lru ((struct bkey_ops) { \42 .key_validate = bch2_lru_validate, \43 .val_to_text = bch2_lru_to_text, \44 .min_val_size = 8, \45})46 47int bch2_lru_del(struct btree_trans *, u16, u64, u64);48int bch2_lru_set(struct btree_trans *, u16, u64, u64);49int bch2_lru_change(struct btree_trans *, u16, u64, u64, u64);50 51struct bkey_buf;52int bch2_lru_check_set(struct btree_trans *, u16, u64, struct bkey_s_c, struct bkey_buf *);53 54int bch2_check_lrus(struct bch_fs *);55 56#endif /* _BCACHEFS_LRU_H */57