32 struct hash {  struct
53 	struct hash chash;  argument
83 static int alloc_hash(struct hash *hash, unsigned elts)  in alloc_hash()  argument
85 	hash->nr_buckets = next_power(elts >> 4, 16);  in alloc_hash()
86 	hash->hash_bits = __ffs(hash->nr_buckets);  in alloc_hash()
87 	hash->table = vzalloc(sizeof(*hash->table) * hash->nr_buckets);  in alloc_hash()
89 	return hash->table ? 0 : -ENOMEM;  in alloc_hash()
92 static void free_hash(struct hash *hash)  in free_hash()  argument
94 	vfree(hash->table);  in free_hash()
142 	struct hash *hash = &p->chash;  in lookup_cache_entry()  local
143 	unsigned h = hash_64(from_oblock(oblock), hash->hash_bits);  in lookup_cache_entry()
145 	struct hlist_head *bucket = &hash->table[h];  in lookup_cache_entry()