intr -客户机(用户)可以中断会导致错误的被阻塞的操作。
Intr - the client (user) can interrupt blocked operations which leads to an error.
早期的NFS挂载选项intr可以帮助解决NFS客户机进程中断并等待某些事件的问题，但它允许所有中断，而不仅仅是通过致命信号(如task_killable)。
The earlier NFS mount option intr was a way out of interrupting NFS client processes waiting for some event, but it allowed all interruptions, not just one by deadly signals (like TASK_KILLABLE).
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