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Diffstat (limited to 'c_src/libbcachefs/btree_cache.h')
-rw-r--r-- | c_src/libbcachefs/btree_cache.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/c_src/libbcachefs/btree_cache.h b/c_src/libbcachefs/btree_cache.h deleted file mode 100644 index 4e1af588..00000000 --- a/c_src/libbcachefs/btree_cache.h +++ /dev/null @@ -1,131 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _BCACHEFS_BTREE_CACHE_H -#define _BCACHEFS_BTREE_CACHE_H - -#include "bcachefs.h" -#include "btree_types.h" -#include "bkey_methods.h" - -extern const char * const bch2_btree_node_flags[]; - -struct btree_iter; - -void bch2_recalc_btree_reserve(struct bch_fs *); - -void bch2_btree_node_hash_remove(struct btree_cache *, struct btree *); -int __bch2_btree_node_hash_insert(struct btree_cache *, struct btree *); -int bch2_btree_node_hash_insert(struct btree_cache *, struct btree *, - unsigned, enum btree_id); - -void bch2_btree_cache_cannibalize_unlock(struct btree_trans *); -int bch2_btree_cache_cannibalize_lock(struct btree_trans *, struct closure *); - -struct btree *__bch2_btree_node_mem_alloc(struct bch_fs *); -struct btree *bch2_btree_node_mem_alloc(struct btree_trans *, bool); - -struct btree *bch2_btree_node_get(struct btree_trans *, struct btree_path *, - const struct bkey_i *, unsigned, - enum six_lock_type, unsigned long); - -struct btree *bch2_btree_node_get_noiter(struct btree_trans *, const struct bkey_i *, - enum btree_id, unsigned, bool); - -int bch2_btree_node_prefetch(struct btree_trans *, struct btree_path *, - const struct bkey_i *, enum btree_id, unsigned); - -void bch2_btree_node_evict(struct btree_trans *, const struct bkey_i *); - -void bch2_fs_btree_cache_exit(struct bch_fs *); -int bch2_fs_btree_cache_init(struct bch_fs *); -void bch2_fs_btree_cache_init_early(struct btree_cache *); - -static inline u64 btree_ptr_hash_val(const struct bkey_i *k) -{ - switch (k->k.type) { - case KEY_TYPE_btree_ptr: - return *((u64 *) bkey_i_to_btree_ptr_c(k)->v.start); - case KEY_TYPE_btree_ptr_v2: - /* - * The cast/deref is only necessary to avoid sparse endianness - * warnings: - */ - return *((u64 *) &bkey_i_to_btree_ptr_v2_c(k)->v.seq); - default: - return 0; - } -} - -static inline struct btree *btree_node_mem_ptr(const struct bkey_i *k) -{ - return k->k.type == KEY_TYPE_btree_ptr_v2 - ? (void *)(unsigned long)bkey_i_to_btree_ptr_v2_c(k)->v.mem_ptr - : NULL; -} - -/* is btree node in hash table? */ -static inline bool btree_node_hashed(struct btree *b) -{ - return b->hash_val != 0; -} - -#define for_each_cached_btree(_b, _c, _tbl, _iter, _pos) \ - for ((_tbl) = rht_dereference_rcu((_c)->btree_cache.table.tbl, \ - &(_c)->btree_cache.table), \ - _iter = 0; _iter < (_tbl)->size; _iter++) \ - rht_for_each_entry_rcu((_b), (_pos), _tbl, _iter, hash) - -static inline size_t btree_bytes(struct bch_fs *c) -{ - return c->opts.btree_node_size; -} - -static inline size_t btree_max_u64s(struct bch_fs *c) -{ - return (btree_bytes(c) - sizeof(struct btree_node)) / sizeof(u64); -} - -static inline size_t btree_pages(struct bch_fs *c) -{ - return btree_bytes(c) / PAGE_SIZE; -} - -static inline unsigned btree_blocks(struct bch_fs *c) -{ - return btree_sectors(c) >> c->block_bits; -} - -#define BTREE_SPLIT_THRESHOLD(c) (btree_max_u64s(c) * 2 / 3) - -#define BTREE_FOREGROUND_MERGE_THRESHOLD(c) (btree_max_u64s(c) * 1 / 3) -#define BTREE_FOREGROUND_MERGE_HYSTERESIS(c) \ - (BTREE_FOREGROUND_MERGE_THRESHOLD(c) + \ - (BTREE_FOREGROUND_MERGE_THRESHOLD(c) >> 2)) - -static inline unsigned btree_id_nr_alive(struct bch_fs *c) -{ - return BTREE_ID_NR + c->btree_roots_extra.nr; -} - -static inline struct btree_root *bch2_btree_id_root(struct bch_fs *c, unsigned id) -{ - if (likely(id < BTREE_ID_NR)) { - return &c->btree_roots_known[id]; - } else { - unsigned idx = id - BTREE_ID_NR; - - EBUG_ON(idx >= c->btree_roots_extra.nr); - return &c->btree_roots_extra.data[idx]; - } -} - -static inline struct btree *btree_node_root(struct bch_fs *c, struct btree *b) -{ - return bch2_btree_id_root(c, b->c.btree_id)->b; -} - -const char *bch2_btree_id_str(enum btree_id); -void bch2_btree_pos_to_text(struct printbuf *, struct bch_fs *, const struct btree *); -void bch2_btree_node_to_text(struct printbuf *, struct bch_fs *, const struct btree *); -void bch2_btree_cache_to_text(struct printbuf *, const struct bch_fs *); - -#endif /* _BCACHEFS_BTREE_CACHE_H */ |