若干个用户空间后台进程。
Both consoles run different programs in their own user space.
两个控制台在各自的用户空间中运行不同的程序。
This is the purpose behind the user space memory access functions.
这就是用户空间内存访问函数的目的。
It then looks at movement of log data from the kernel into user space.
然后，本文介绍了日志数据从内核到用户空间的移动过程。
From the user space perspective, there is no need to modify the application code.
从用户空间的角度来看，不需要修改应用程序代码。
The copy_to_user function copies a block of data from the kernel into user space.
copy _ to_user函数将数据块从内核复制到用户空间。
To make the actual operation easier, several user space applications have been created.
为了简化实际的操作，创建了一些用户空间应用程序。
The copy_from_user function copies a block of data from user space into a kernel buffer.
copy _ from_user函数将数据块从用户空间复制到内核缓冲区。
User space drivers are discussed towards the end of the book.
本书的最后讨论了用户空间的设备驱动。
REVOKED: The key is moved to this state by a user-space action.
REVOKED：一个用户空间操作将密钥转移到这个状态。
You can also test whether a user-space pointer is valid through a call to access_ok.
您也可以通过调用access_ok来测试用户空间指针是否有效。
Upon successful completion of these calls, the user-space session has a new key.
成功完成这些调用之后，用户空间会话就有了一个新密钥。
Upon successful completion of these calls, the user-space session has a new key.
成功完成这些调用之后，用户空间会话就有了一个新密钥。
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