JFS2还使用了B +树，以便更快地查找目录和管理分区描述符。

JFS2 also makes use of B + trees for fast directory lookups as well as managing extent descriptors.

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该文件系统的基础格式建立在单一的 B+ 树的基础之上，这使得搜索的效率和可伸缩性增强。

The fundamental format of the file system is based on a single B+ tree, which makes search operations efficient and very scalable.

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ReiserFS 使用了特殊的优化 b* 平衡树（每个文件系统一个）来组织所有的文件系统数据。

ReiserFS uses a specially optimized b* balanced tree (one per filesystem) to organize all filesystem data.

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