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#ifndef _BCACHE_BTREE_IO_H
#define _BCACHE_BTREE_IO_H
struct cache_set;
struct btree_write;
struct btree;
struct btree_iter;
static inline void btree_node_io_unlock(struct btree *b)
{
EBUG_ON(!btree_node_write_in_flight(b));
clear_btree_node_write_in_flight(b);
wake_up_bit(&b->flags, BTREE_NODE_write_in_flight);
}
static inline void btree_node_io_lock(struct btree *b)
{
wait_on_bit_lock_io(&b->flags, BTREE_NODE_write_in_flight,
TASK_UNINTERRUPTIBLE);
}
enum compact_mode {
COMPACT_LAZY,
COMPACT_WRITTEN,
COMPACT_WRITTEN_NO_WRITE_LOCK,
};
bool __bch_compact_whiteouts(struct cache_set *, struct btree *, enum compact_mode);
static inline bool bch_maybe_compact_whiteouts(struct cache_set *c, struct btree *b)
{
struct bset_tree *t;
for_each_bset(b, t) {
unsigned live_u64s = b->nr.bset_u64s[t - b->set];
unsigned bset_u64s = le16_to_cpu(bset(b, t)->u64s);
if (live_u64s * 4 < bset_u64s * 3)
goto compact;
}
return false;
compact:
return __bch_compact_whiteouts(c, b, COMPACT_LAZY);
}
void bch_btree_sort_into(struct cache_set *, struct btree *, struct btree *);
void bch_btree_build_aux_trees(struct btree *);
void bch_btree_init_next(struct cache_set *, struct btree *,
struct btree_iter *);
void bch_btree_node_read_done(struct cache_set *, struct btree *,
struct cache *, const struct bch_extent_ptr *);
void bch_btree_node_read(struct cache_set *, struct btree *);
int bch_btree_root_read(struct cache_set *, enum btree_id,
const struct bkey_i *, unsigned);
void bch_btree_complete_write(struct cache_set *, struct btree *,
struct btree_write *);
void __bch_btree_node_write(struct cache_set *, struct btree *,
struct closure *, enum six_lock_type, int);
bool bch_btree_post_write_cleanup(struct cache_set *, struct btree *);
void bch_btree_node_write(struct cache_set *, struct btree *,
struct closure *, enum six_lock_type, int);
void bch_btree_flush(struct cache_set *);
void bch_btree_node_flush_journal_entries(struct cache_set *, struct btree *,
struct closure *);
#endif /* _BCACHE_BTREE_IO_H */
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