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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2020-02-18 17:15:32 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:08:35 -0400 |
| commit | 237e80483a6466f3c1968c2a8bb115b3e24d951b (patch) | |
| tree | 0c8a3b53e0a1e492ea5e64c33aff975cb8193d7f /fs/bcachefs/btree_cache.h | |
| parent | b606c8aa568e9f4f10f1b7504f8b96628d933a0e (diff) | |
| download | linux-237e80483a6466f3c1968c2a8bb115b3e24d951b.tar.gz linux-237e80483a6466f3c1968c2a8bb115b3e24d951b.tar.bz2 linux-237e80483a6466f3c1968c2a8bb115b3e24d951b.zip | |
bcachefs: introduce b->hash_val
This is partly prep work for introducing bch_btree_ptr_v2, but it'll
also be a bit of a performance boost by moving the full key out of the
hot part of struct btree.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/btree_cache.h')
| -rw-r--r-- | fs/bcachefs/btree_cache.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/bcachefs/btree_cache.h b/fs/bcachefs/btree_cache.h index adacb0a06703..270f7f8fb140 100644 --- a/fs/bcachefs/btree_cache.h +++ b/fs/bcachefs/btree_cache.h @@ -35,13 +35,20 @@ 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 *); -#define PTR_HASH(_k) *((u64 *) &bkey_i_to_btree_ptr_c(_k)->v) +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); + default: + return 0; + } +} /* is btree node in hash table? */ static inline bool btree_node_hashed(struct btree *b) { - return b->key.k.type == KEY_TYPE_btree_ptr && - PTR_HASH(&b->key); + return b->hash_val != 0; } #define for_each_cached_btree(_b, _c, _tbl, _iter, _pos) \ |