5 #include "keylist_types.h"
7 const char *bch2_stripe_invalid(const struct bch_fs *, struct bkey_s_c);
8 void bch2_stripe_to_text(struct printbuf *, struct bch_fs *,
11 #define bch2_bkey_ops_stripe (struct bkey_ops) { \
12 .key_invalid = bch2_stripe_invalid, \
13 .val_to_text = bch2_stripe_to_text, \
16 static inline unsigned stripe_csums_per_device(const struct bch_stripe *s)
18 return DIV_ROUND_UP(le16_to_cpu(s->sectors),
19 1 << s->csum_granularity_bits);
22 static inline unsigned stripe_csum_offset(const struct bch_stripe *s,
23 unsigned dev, unsigned csum_idx)
25 unsigned csum_bytes = bch_crc_bytes[s->csum_type];
27 return sizeof(struct bch_stripe) +
28 sizeof(struct bch_extent_ptr) * s->nr_blocks +
29 (dev * stripe_csums_per_device(s) + csum_idx) * csum_bytes;
32 static inline unsigned stripe_blockcount_offset(const struct bch_stripe *s,
35 return stripe_csum_offset(s, s->nr_blocks, 0) +
39 static inline unsigned stripe_blockcount_get(const struct bch_stripe *s,
42 return le16_to_cpup((void *) s + stripe_blockcount_offset(s, idx));
45 static inline void stripe_blockcount_set(struct bch_stripe *s,
46 unsigned idx, unsigned v)
48 __le16 *p = (void *) s + stripe_blockcount_offset(s, idx);
53 static inline unsigned stripe_val_u64s(const struct bch_stripe *s)
55 return DIV_ROUND_UP(stripe_blockcount_offset(s, s->nr_blocks),
59 static inline void *stripe_csum(struct bch_stripe *s,
60 unsigned dev, unsigned csum_idx)
62 return (void *) s + stripe_csum_offset(s, dev, csum_idx);
67 struct ec_stripe_buf {
68 /* might not be buffering the entire stripe: */
71 unsigned long valid[BITS_TO_LONGS(EC_STRIPE_MAX)];
73 void *data[EC_STRIPE_MAX];
76 struct bkey_i_stripe key;
81 struct ec_stripe_head;
83 struct ec_stripe_new {
85 struct ec_stripe_head *h;
87 struct list_head list;
89 /* counts in flight writes, stripe is created when pin == 0 */
94 unsigned long blocks_allocated[BITS_TO_LONGS(EC_STRIPE_MAX)];
96 struct open_buckets blocks;
97 struct open_buckets parity;
100 u64 inline_keys[BKEY_U64s * 8];
102 struct ec_stripe_buf stripe;
105 struct ec_stripe_head {
106 struct list_head list;
109 struct list_head stripes;
115 struct bch_devs_mask devs;
116 unsigned nr_active_devs;
120 struct dev_stripe_state block_stripe;
121 struct dev_stripe_state parity_stripe;
123 struct open_buckets blocks;
124 struct open_buckets parity;
126 struct ec_stripe_new *s;
129 int bch2_ec_read_extent(struct bch_fs *, struct bch_read_bio *);
131 void *bch2_writepoint_ec_buf(struct bch_fs *, struct write_point *);
132 void bch2_ec_add_backpointer(struct bch_fs *, struct write_point *,
133 struct bpos, unsigned);
135 void bch2_ec_bucket_written(struct bch_fs *, struct open_bucket *);
136 void bch2_ec_bucket_cancel(struct bch_fs *, struct open_bucket *);
138 int bch2_ec_stripe_new_alloc(struct bch_fs *, struct ec_stripe_head *);
140 void bch2_ec_stripe_head_put(struct ec_stripe_head *);
141 struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *, unsigned,
144 void bch2_stripes_heap_update(struct bch_fs *, struct stripe *, size_t);
145 void bch2_stripes_heap_del(struct bch_fs *, struct stripe *, size_t);
146 void bch2_stripes_heap_insert(struct bch_fs *, struct stripe *, size_t);
148 void bch2_ec_stop_dev(struct bch_fs *, struct bch_dev *);
150 void bch2_ec_flush_new_stripes(struct bch_fs *);
152 int bch2_stripes_read(struct bch_fs *, struct list_head *);
153 int bch2_stripes_write(struct bch_fs *, bool *);
155 int bch2_ec_mem_alloc(struct bch_fs *, bool);
157 int bch2_fs_ec_start(struct bch_fs *);
159 void bch2_fs_ec_exit(struct bch_fs *);
160 int bch2_fs_ec_init(struct bch_fs *);
162 #endif /* _BCACHEFS_EC_H */