The file system driver implementation routes requests from the VFS back to user space.
文件系统驱动程序实现将来自 VFS 的请求发送回用户空间。
Wireless extensions is the name of a generic API that allows a driver to inform the user about space configuration and statistics specific to common wireless LANs.
无线扩展是一个普通api的名称，它允许驱动程序告知用户关于常见无线lan的空间结构和统计细节。
The SCSI tape driver is unique in that it performs I/O transfers directly from user space, if possible.
SCSI 磁带驱动器的独特之处在于，如果可能，它可以直接从用户空间执行 I/O 传输。
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