1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include "buckets_types.h"
7 #include "keylist_types.h"
9 const char *bch2_stripe_invalid(const struct bch_fs *, struct bkey_s_c);
10 void bch2_stripe_to_text(struct printbuf *, struct bch_fs *,
13 #define bch2_bkey_ops_stripe (struct bkey_ops) { \
14 .key_invalid = bch2_stripe_invalid, \
15 .val_to_text = bch2_stripe_to_text, \
16 .swab = bch2_ptr_swab, \
19 static inline unsigned stripe_csums_per_device(const struct bch_stripe *s)
21 return DIV_ROUND_UP(le16_to_cpu(s->sectors),
22 1 << s->csum_granularity_bits);
25 static inline unsigned stripe_csum_offset(const struct bch_stripe *s,
26 unsigned dev, unsigned csum_idx)
28 unsigned csum_bytes = bch_crc_bytes[s->csum_type];
30 return sizeof(struct bch_stripe) +
31 sizeof(struct bch_extent_ptr) * s->nr_blocks +
32 (dev * stripe_csums_per_device(s) + csum_idx) * csum_bytes;
35 static inline unsigned stripe_blockcount_offset(const struct bch_stripe *s,
38 return stripe_csum_offset(s, s->nr_blocks, 0) +
42 static inline unsigned stripe_blockcount_get(const struct bch_stripe *s,
45 return le16_to_cpup((void *) s + stripe_blockcount_offset(s, idx));
48 static inline void stripe_blockcount_set(struct bch_stripe *s,
49 unsigned idx, unsigned v)
51 __le16 *p = (void *) s + stripe_blockcount_offset(s, idx);
56 static inline unsigned stripe_val_u64s(const struct bch_stripe *s)
58 return DIV_ROUND_UP(stripe_blockcount_offset(s, s->nr_blocks),
62 static inline void *stripe_csum(struct bch_stripe *s,
63 unsigned dev, unsigned csum_idx)
65 return (void *) s + stripe_csum_offset(s, dev, csum_idx);
70 struct ec_stripe_buf {
71 /* might not be buffering the entire stripe: */
74 unsigned long valid[BITS_TO_LONGS(EC_STRIPE_MAX)];
76 void *data[EC_STRIPE_MAX];
79 struct bkey_i_stripe key;
84 struct ec_stripe_head;
86 struct ec_stripe_new {
88 struct ec_stripe_head *h;
90 struct list_head list;
92 /* counts in flight writes, stripe is created when pin == 0 */
101 bool existing_stripe;
102 u64 existing_stripe_idx;
104 unsigned long blocks_allocated[BITS_TO_LONGS(EC_STRIPE_MAX)];
106 struct open_buckets blocks;
107 u8 data_block_idx[EC_STRIPE_MAX];
108 struct open_buckets parity;
109 struct disk_reservation res;
112 u64 inline_keys[BKEY_U64s * 8];
114 struct ec_stripe_buf stripe;
117 struct ec_stripe_head {
118 struct list_head list;
125 struct bch_devs_mask devs;
126 unsigned nr_active_devs;
130 struct dev_stripe_state block_stripe;
131 struct dev_stripe_state parity_stripe;
133 struct ec_stripe_new *s;
136 int bch2_ec_read_extent(struct bch_fs *, struct bch_read_bio *);
138 void *bch2_writepoint_ec_buf(struct bch_fs *, struct write_point *);
139 void bch2_ec_add_backpointer(struct bch_fs *, struct write_point *,
140 struct bpos, unsigned);
142 void bch2_ec_bucket_written(struct bch_fs *, struct open_bucket *);
143 void bch2_ec_bucket_cancel(struct bch_fs *, struct open_bucket *);
145 int bch2_ec_stripe_new_alloc(struct bch_fs *, struct ec_stripe_head *);
147 void bch2_ec_stripe_head_put(struct bch_fs *, struct ec_stripe_head *);
148 struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *, unsigned,
151 void bch2_stripes_heap_update(struct bch_fs *, struct stripe *, size_t);
152 void bch2_stripes_heap_del(struct bch_fs *, struct stripe *, size_t);
153 void bch2_stripes_heap_insert(struct bch_fs *, struct stripe *, size_t);
155 void bch2_ec_stop_dev(struct bch_fs *, struct bch_dev *);
157 void bch2_ec_flush_new_stripes(struct bch_fs *);
160 int bch2_stripes_read(struct bch_fs *, struct journal_keys *);
161 int bch2_stripes_write(struct bch_fs *, unsigned);
163 int bch2_ec_mem_alloc(struct bch_fs *, bool);
165 void bch2_stripes_heap_to_text(struct printbuf *, struct bch_fs *);
166 void bch2_new_stripes_to_text(struct printbuf *, struct bch_fs *);
168 void bch2_fs_ec_exit(struct bch_fs *);
169 int bch2_fs_ec_init(struct bch_fs *);
171 #endif /* _BCACHEFS_EC_H */