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Diffstat (limited to '')
| -rw-r--r-- | fs/bcachefs/btree_key_cache.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/fs/bcachefs/btree_key_cache.h b/fs/bcachefs/btree_key_cache.h new file mode 100644 index 0000000000..be3acde2ca --- /dev/null +++ b/fs/bcachefs/btree_key_cache.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_BTREE_KEY_CACHE_H +#define _BCACHEFS_BTREE_KEY_CACHE_H + +static inline size_t bch2_nr_btree_keys_need_flush(struct bch_fs *c) +{ + size_t nr_dirty = atomic_long_read(&c->btree_key_cache.nr_dirty); + size_t nr_keys = atomic_long_read(&c->btree_key_cache.nr_keys); + size_t max_dirty = 1024 + nr_keys / 2; + + return max_t(ssize_t, 0, nr_dirty - max_dirty); +} + +static inline bool bch2_btree_key_cache_must_wait(struct bch_fs *c) +{ + size_t nr_dirty = atomic_long_read(&c->btree_key_cache.nr_dirty); + size_t nr_keys = atomic_long_read(&c->btree_key_cache.nr_keys); + size_t max_dirty = 4096 + (nr_keys * 3) / 4; + + return nr_dirty > max_dirty; +} + +int bch2_btree_key_cache_journal_flush(struct journal *, + struct journal_entry_pin *, u64); + +struct bkey_cached * +bch2_btree_key_cache_find(struct bch_fs *, enum btree_id, struct bpos); + +int bch2_btree_path_traverse_cached(struct btree_trans *, struct btree_path *, + unsigned); + +bool bch2_btree_insert_key_cached(struct btree_trans *, unsigned, + struct btree_insert_entry *); +int bch2_btree_key_cache_flush(struct btree_trans *, + enum btree_id, struct bpos); +void bch2_btree_key_cache_drop(struct btree_trans *, + struct btree_path *); + +void bch2_fs_btree_key_cache_exit(struct btree_key_cache *); +void bch2_fs_btree_key_cache_init_early(struct btree_key_cache *); +int bch2_fs_btree_key_cache_init(struct btree_key_cache *); + +void bch2_btree_key_cache_to_text(struct printbuf *, struct btree_key_cache *); + +void bch2_btree_key_cache_exit(void); +int __init bch2_btree_key_cache_init(void); + +#endif /* _BCACHEFS_BTREE_KEY_CACHE_H */ |