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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_LRU_FORMAT_H
3#define _BCACHEFS_LRU_FORMAT_H
4
5struct bch_lru {
6 struct bch_val v;
7 __le64 idx;
8} __packed __aligned(8);
9
10#define BCH_LRU_TYPES() \
11 x(read) \
12 x(fragmentation) \
13 x(stripes)
14
15enum bch_lru_type {
16#define x(n) BCH_LRU_##n,
17 BCH_LRU_TYPES()
18#undef x
19};
20
21#define BCH_LRU_BUCKET_FRAGMENTATION ((1U << 16) - 1)
22#define BCH_LRU_STRIPE_FRAGMENTATION ((1U << 16) - 2)
23
24#define LRU_TIME_BITS 48
25#define LRU_TIME_MAX ((1ULL << LRU_TIME_BITS) - 1)
26
27#endif /* _BCACHEFS_LRU_FORMAT_H */