Rather than the host operating system needing to worry about block-to-file mapping, the storage device itself provides this mapping, allowing the host to operate at the file level.
主机操作系统不再需要考虑块到文件的映射，存储设备本身会提供这种映射，因此主机可以在文件级进行操作。
JFFS2 maintains block lists to sufficiently wear-level the device.
JFFS2通过维护块列表来充分地对设备执行平均读写。
Change the trust level to Restricted and you block all access to your PC from the specified device.
将信任级别改为受限，你就能阻止特定设备对你的PC的一切访问。
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