From 85c675d0d09a45a135bddd15d7b385f8758c32fb Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:35:05 +0200 Subject: Adding upstream version 6.7.7. Signed-off-by: Daniel Baumann --- fs/bcachefs/lru.h | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 fs/bcachefs/lru.h (limited to 'fs/bcachefs/lru.h') diff --git a/fs/bcachefs/lru.h b/fs/bcachefs/lru.h new file mode 100644 index 000000000..429dca816 --- /dev/null +++ b/fs/bcachefs/lru.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_LRU_H +#define _BCACHEFS_LRU_H + +#define LRU_TIME_BITS 48 +#define LRU_TIME_MAX ((1ULL << LRU_TIME_BITS) - 1) + +static inline u64 lru_pos_id(struct bpos pos) +{ + return pos.inode >> LRU_TIME_BITS; +} + +static inline u64 lru_pos_time(struct bpos pos) +{ + return pos.inode & ~(~0ULL << LRU_TIME_BITS); +} + +static inline struct bpos lru_pos(u16 lru_id, u64 dev_bucket, u64 time) +{ + struct bpos pos = POS(((u64) lru_id << LRU_TIME_BITS)|time, dev_bucket); + + EBUG_ON(time > LRU_TIME_MAX); + EBUG_ON(lru_pos_id(pos) != lru_id); + EBUG_ON(lru_pos_time(pos) != time); + EBUG_ON(pos.offset != dev_bucket); + + return pos; +} + +#define BCH_LRU_TYPES() \ + x(read) \ + x(fragmentation) + +enum bch_lru_type { +#define x(n) BCH_LRU_##n, + BCH_LRU_TYPES() +#undef x +}; + +#define BCH_LRU_FRAGMENTATION_START ((1U << 16) - 1) + +static inline enum bch_lru_type lru_type(struct bkey_s_c l) +{ + u16 lru_id = l.k->p.inode >> 48; + + if (lru_id == BCH_LRU_FRAGMENTATION_START) + return BCH_LRU_fragmentation; + return BCH_LRU_read; +} + +int bch2_lru_invalid(struct bch_fs *, struct bkey_s_c, + enum bkey_invalid_flags, struct printbuf *); +void bch2_lru_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); + +void bch2_lru_pos_to_text(struct printbuf *, struct bpos); + +#define bch2_bkey_ops_lru ((struct bkey_ops) { \ + .key_invalid = bch2_lru_invalid, \ + .val_to_text = bch2_lru_to_text, \ + .min_val_size = 8, \ +}) + +int bch2_lru_del(struct btree_trans *, u16, u64, u64); +int bch2_lru_set(struct btree_trans *, u16, u64, u64); +int bch2_lru_change(struct btree_trans *, u16, u64, u64, u64); + +int bch2_check_lrus(struct bch_fs *); + +#endif /* _BCACHEFS_LRU_H */ -- cgit v1.2.3