+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_EC_H
#define _BCACHEFS_EC_H
#include "ec_types.h"
-#include "keylist_types.h"
+#include "buckets_types.h"
-const char *bch2_ec_key_invalid(const struct bch_fs *, struct bkey_s_c);
-void bch2_ec_key_to_text(struct printbuf *, struct bch_fs *,
+int bch2_stripe_invalid(const struct bch_fs *, struct bkey_s_c,
+ int rw, struct printbuf *);
+void bch2_stripe_to_text(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
-#define bch2_bkey_ec_ops (struct bkey_ops) { \
- .key_invalid = bch2_ec_key_invalid, \
- .val_to_text = bch2_ec_key_to_text, \
+#define bch2_bkey_ops_stripe (struct bkey_ops) { \
+ .key_invalid = bch2_stripe_invalid, \
+ .val_to_text = bch2_stripe_to_text, \
+ .swab = bch2_ptr_swab, \
+ .trans_trigger = bch2_trans_mark_stripe, \
+ .atomic_trigger = bch2_mark_stripe, \
+}
+
+static inline unsigned stripe_csums_per_device(const struct bch_stripe *s)
+{
+ return DIV_ROUND_UP(le16_to_cpu(s->sectors),
+ 1 << s->csum_granularity_bits);
+}
+
+static inline unsigned stripe_csum_offset(const struct bch_stripe *s,
+ unsigned dev, unsigned csum_idx)
+{
+ unsigned csum_bytes = bch_crc_bytes[s->csum_type];
+
+ return sizeof(struct bch_stripe) +
+ sizeof(struct bch_extent_ptr) * s->nr_blocks +
+ (dev * stripe_csums_per_device(s) + csum_idx) * csum_bytes;
+}
+
+static inline unsigned stripe_blockcount_offset(const struct bch_stripe *s,
+ unsigned idx)
+{
+ return stripe_csum_offset(s, s->nr_blocks, 0) +
+ sizeof(u16) * idx;
+}
+
+static inline unsigned stripe_blockcount_get(const struct bch_stripe *s,
+ unsigned idx)
+{
+ return le16_to_cpup((void *) s + stripe_blockcount_offset(s, idx));
+}
+
+static inline void stripe_blockcount_set(struct bch_stripe *s,
+ unsigned idx, unsigned v)
+{
+ __le16 *p = (void *) s + stripe_blockcount_offset(s, idx);
+
+ *p = cpu_to_le16(v);
+}
+
+static inline unsigned stripe_val_u64s(const struct bch_stripe *s)
+{
+ return DIV_ROUND_UP(stripe_blockcount_offset(s, s->nr_blocks),
+ sizeof(u64));
+}
+
+static inline void *stripe_csum(struct bch_stripe *s,
+ unsigned block, unsigned csum_idx)
+{
+ EBUG_ON(block >= s->nr_blocks);
+ EBUG_ON(csum_idx >= stripe_csums_per_device(s));
+
+ return (void *) s + stripe_csum_offset(s, block, csum_idx);
+}
+
+static inline struct bch_csum stripe_csum_get(struct bch_stripe *s,
+ unsigned block, unsigned csum_idx)
+{
+ struct bch_csum csum = { 0 };
+
+ memcpy(&csum, stripe_csum(s, block, csum_idx), bch_crc_bytes[s->csum_type]);
+ return csum;
+}
+
+static inline void stripe_csum_set(struct bch_stripe *s,
+ unsigned block, unsigned csum_idx,
+ struct bch_csum csum)
+{
+ memcpy(stripe_csum(s, block, csum_idx), &csum, bch_crc_bytes[s->csum_type]);
+}
+
+static inline bool __bch2_ptr_matches_stripe(const struct bch_extent_ptr *stripe_ptr,
+ const struct bch_extent_ptr *data_ptr,
+ unsigned sectors)
+{
+ return data_ptr->dev == stripe_ptr->dev &&
+ data_ptr->gen == stripe_ptr->gen &&
+ data_ptr->offset >= stripe_ptr->offset &&
+ data_ptr->offset < stripe_ptr->offset + sectors;
+}
+
+static inline bool bch2_ptr_matches_stripe(const struct bch_stripe *s,
+ struct extent_ptr_decoded p)
+{
+ unsigned nr_data = s->nr_blocks - s->nr_redundant;
+
+ BUG_ON(!p.has_ec);
+
+ if (p.ec.block >= nr_data)
+ return false;
+
+ return __bch2_ptr_matches_stripe(&s->ptrs[p.ec.block], &p.ptr,
+ le16_to_cpu(s->sectors));
+}
+
+static inline bool bch2_ptr_matches_stripe_m(const struct gc_stripe *m,
+ struct extent_ptr_decoded p)
+{
+ unsigned nr_data = m->nr_blocks - m->nr_redundant;
+
+ BUG_ON(!p.has_ec);
+
+ if (p.ec.block >= nr_data)
+ return false;
+
+ return __bch2_ptr_matches_stripe(&m->ptrs[p.ec.block], &p.ptr,
+ m->sectors);
}
struct bch_read_bio;
/* might not be buffering the entire stripe: */
unsigned offset;
unsigned size;
- unsigned long valid[BITS_TO_LONGS(EC_STRIPE_MAX)];
+ unsigned long valid[BITS_TO_LONGS(BCH_BKEY_PTRS_MAX)];
- void *data[EC_STRIPE_MAX];
+ void *data[BCH_BKEY_PTRS_MAX];
union {
struct bkey_i_stripe key;
struct ec_stripe_head *h;
struct mutex lock;
struct list_head list;
+ struct closure iodone;
/* counts in flight writes, stripe is created when pin == 0 */
atomic_t pin;
int err;
- unsigned long blocks_allocated[BITS_TO_LONGS(EC_STRIPE_MAX)];
-
- struct open_buckets blocks;
- struct open_buckets parity;
+ u8 nr_data;
+ u8 nr_parity;
+ bool allocated;
+ bool pending;
+ bool have_existing_stripe;
- struct keylist keys;
- u64 inline_keys[BKEY_U64s * 8];
+ unsigned long blocks_gotten[BITS_TO_LONGS(BCH_BKEY_PTRS_MAX)];
+ unsigned long blocks_allocated[BITS_TO_LONGS(BCH_BKEY_PTRS_MAX)];
+ open_bucket_idx_t blocks[BCH_BKEY_PTRS_MAX];
+ struct disk_reservation res;
- struct ec_stripe_buf stripe;
+ struct ec_stripe_buf new_stripe;
+ struct ec_stripe_buf existing_stripe;
};
struct ec_stripe_head {
struct list_head list;
struct mutex lock;
- struct list_head stripes;
-
unsigned target;
unsigned algo;
unsigned redundancy;
+ bool copygc;
struct bch_devs_mask devs;
unsigned nr_active_devs;
struct dev_stripe_state block_stripe;
struct dev_stripe_state parity_stripe;
- struct open_buckets blocks;
- struct open_buckets parity;
-
struct ec_stripe_new *s;
};
int bch2_ec_read_extent(struct bch_fs *, struct bch_read_bio *);
void *bch2_writepoint_ec_buf(struct bch_fs *, struct write_point *);
-void bch2_ec_add_backpointer(struct bch_fs *, struct write_point *,
- struct bpos, unsigned);
void bch2_ec_bucket_written(struct bch_fs *, struct open_bucket *);
void bch2_ec_bucket_cancel(struct bch_fs *, struct open_bucket *);
int bch2_ec_stripe_new_alloc(struct bch_fs *, struct ec_stripe_head *);
-void bch2_ec_stripe_head_put(struct ec_stripe_head *);
-struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *, unsigned,
- unsigned, unsigned);
+void bch2_ec_stripe_head_put(struct bch_fs *, struct ec_stripe_head *);
+struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *,
+ unsigned, unsigned, unsigned, bool, struct closure *);
-void bch2_stripes_heap_update(struct bch_fs *, struct ec_stripe *, size_t);
-void bch2_stripes_heap_del(struct bch_fs *, struct ec_stripe *, size_t);
-void bch2_stripes_heap_insert(struct bch_fs *, struct ec_stripe *, size_t);
+void bch2_stripes_heap_update(struct bch_fs *, struct stripe *, size_t);
+void bch2_stripes_heap_del(struct bch_fs *, struct stripe *, size_t);
+void bch2_stripes_heap_insert(struct bch_fs *, struct stripe *, size_t);
void bch2_ec_stop_dev(struct bch_fs *, struct bch_dev *);
void bch2_ec_flush_new_stripes(struct bch_fs *);
-int bch2_fs_ec_start(struct bch_fs *);
+void bch2_stripes_heap_start(struct bch_fs *);
+
+int bch2_stripes_read(struct bch_fs *);
+
+void bch2_stripes_heap_to_text(struct printbuf *, struct bch_fs *);
+void bch2_new_stripes_to_text(struct printbuf *, struct bch_fs *);
void bch2_fs_ec_exit(struct bch_fs *);
+void bch2_fs_ec_init_early(struct bch_fs *);
int bch2_fs_ec_init(struct bch_fs *);
#endif /* _BCACHEFS_EC_H */
projects / bcachefs-tools-debian / blobdiff