1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_ALLOC_TYPES_H
3 #define _BCACHEFS_ALLOC_TYPES_H
5 #include <linux/mutex.h>
6 #include <linux/spinlock.h>
8 #include "clock_types.h"
11 struct bucket_alloc_state {
14 u64 skipped_need_journal_commit;
19 #define BCH_WATERMARKS() \
28 #define x(name) BCH_WATERMARK_##name,
34 #define BCH_WATERMARK_BITS 3
35 #define BCH_WATERMARK_MASK ~(~0 << BCH_WATERMARK_BITS)
37 #define OPEN_BUCKETS_COUNT 1024
39 #define WRITE_POINT_HASH_NR 32
40 #define WRITE_POINT_MAX 32
43 * 0 is never a valid open_bucket_idx_t:
45 typedef u16 open_bucket_idx_t;
50 open_bucket_idx_t freelist;
51 open_bucket_idx_t hash;
54 * When an open bucket has an ec_stripe attached, this is the index of
55 * the block in the stripe this open_bucket corresponds to:
58 enum bch_data_type data_type:6;
60 unsigned on_partial_list:1;
66 struct ec_stripe_new *ec;
69 #define OPEN_BUCKET_LIST_MAX 15
73 open_bucket_idx_t v[OPEN_BUCKET_LIST_MAX];
76 struct dev_stripe_state {
77 u64 next_alloc[BCH_SB_MEMBERS_MAX];
80 #define WRITE_POINT_STATES() \
86 enum write_point_state {
87 #define x(n) WRITE_POINT_##n,
95 struct hlist_node node;
98 unsigned long write_point;
99 enum bch_data_type data_type;
101 /* calculated based on how many pointers we're actually going to use: */
102 unsigned sectors_free;
104 struct open_buckets ptrs;
105 struct dev_stripe_state stripe;
107 u64 sectors_allocated;
108 } __attribute__((__aligned__(SMP_CACHE_BYTES)));
111 struct work_struct index_update_work;
113 struct list_head writes;
114 spinlock_t writes_lock;
116 enum write_point_state state;
117 u64 last_state_change;
118 u64 time[WRITE_POINT_STATE_NR];
119 } __attribute__((__aligned__(SMP_CACHE_BYTES)));
122 struct write_point_specifier {
126 #endif /* _BCACHEFS_ALLOC_TYPES_H */