The request causes the driver fork process to be suspended until the device requests an interrupt or the device times out.
该请求使驱动器交叉进程挂起,直至设备请求中断或设备超时。
After the fork, Process a might continue running the same application.
在分叉之后,进程A可能会继续运行同一个应用程序。
Fork to create a new child process with new pid.
使用fork创建一个具有新的PID的子进程。
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