+static inline bool data_type_movable(enum bch_data_type type)
+{
+ return (1U << type) & DATA_TYPES_MOVABLE;
+}
+
+static inline u64 alloc_lru_idx_fragmentation(struct bch_alloc_v4 a,
+ struct bch_dev *ca)
+{
+ if (!data_type_movable(a.data_type) ||
+ a.dirty_sectors >= ca->mi.bucket_size)
+ return 0;
+
+ return div_u64((u64) a.dirty_sectors * (1ULL << 31), ca->mi.bucket_size);
+}
+
+static inline u64 alloc_freespace_genbits(struct bch_alloc_v4 a)
+{
+ return ((u64) alloc_gc_gen(a) >> 4) << 56;
+}
+
+static inline struct bpos alloc_freespace_pos(struct bpos pos, struct bch_alloc_v4 a)
+{
+ pos.offset |= alloc_freespace_genbits(a);
+ return pos;
+}
+
+static inline unsigned alloc_v4_u64s(const struct bch_alloc_v4 *a)
+{
+ unsigned ret = (BCH_ALLOC_V4_BACKPOINTERS_START(a) ?:
+ BCH_ALLOC_V4_U64s_V0) +
+ BCH_ALLOC_V4_NR_BACKPOINTERS(a) *
+ (sizeof(struct bch_backpointer) / sizeof(u64));
+
+ BUG_ON(ret > U8_MAX - BKEY_U64s);
+ return ret;
+}
+
+static inline void set_alloc_v4_u64s(struct bkey_i_alloc_v4 *a)
+{
+ set_bkey_val_u64s(&a->k, alloc_v4_u64s(&a->v));
+}
+
+struct bkey_i_alloc_v4 *
+bch2_trans_start_alloc_update(struct btree_trans *, struct btree_iter *, struct bpos);
+
+void __bch2_alloc_to_v4(struct bkey_s_c, struct bch_alloc_v4 *);
+
+static inline const struct bch_alloc_v4 *bch2_alloc_to_v4(struct bkey_s_c k, struct bch_alloc_v4 *convert)
+{
+ const struct bch_alloc_v4 *ret;
+
+ if (unlikely(k.k->type != KEY_TYPE_alloc_v4))
+ goto slowpath;
+
+ ret = bkey_s_c_to_alloc_v4(k).v;
+ if (BCH_ALLOC_V4_BACKPOINTERS_START(ret) != BCH_ALLOC_V4_U64s)
+ goto slowpath;
+
+ return ret;
+slowpath:
+ __bch2_alloc_to_v4(k, convert);
+ return convert;
+}
+
+struct bkey_i_alloc_v4 *bch2_alloc_to_v4_mut(struct btree_trans *, struct bkey_s_c);
+
+int bch2_bucket_io_time_reset(struct btree_trans *, unsigned, size_t, int);
+
+int bch2_alloc_v1_invalid(const struct bch_fs *, struct bkey_s_c, unsigned, struct printbuf *);
+int bch2_alloc_v2_invalid(const struct bch_fs *, struct bkey_s_c, unsigned, struct printbuf *);
+int bch2_alloc_v3_invalid(const struct bch_fs *, struct bkey_s_c, unsigned, struct printbuf *);
+int bch2_alloc_v4_invalid(const struct bch_fs *, struct bkey_s_c, unsigned, struct printbuf *);
+void bch2_alloc_v4_swab(struct bkey_s);