When a dentry object exists, an inode object will also exist in the inode cache.
如果存在一个dentry对象，那么inode缓存中也将存在一个inode对象。
Individual inode cache objects are allocated from the inode_cache slab allocator.
从inode_cacheslab分配器分配单个inode缓存对象。
Lookups are performed on the dentry cache, which result in an object in the inode cache.
查找是在dentry缓存中执行的，这将导致inode缓存中出现一个对象。
Note that for each inode in the inode cache there is a corresponding dentry in the directory cache.
注意，对于inode缓存中的每个inode，在目录缓存中都有一个对应的dentry。
Override the default number of hash buckets for the kernel's inode cache. Recommended only for kernel experts.
重写内核索引节点缓存的哈希表目的默认值。建议内核专家修改。
Override the default number of hash buckets for the kernel's inode cache. Recommended only for kernel experts.
重写内核索引节点缓存的哈希表目的默认值。建议内核专家修改。
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