One of the most common shared resources is the file system.
文件系统是最常见的共享资源之一。
Another problem is that the speed of access to the Shared file system is reduced.
另一个问题是访问共享文件系统的速度会降低。
msync(): Used to synchronize a shared memory segment with the file system—a technique useful when mapping a file into memory.
msync()：用来让共享内存段与文件系统同步 —当把文件映射到内存时，这种技术有用。
Caution Enabling all Shared folders can pose a security risk because a Shared folder might enable existing programs inside the virtual machine to access the host file system without your knowledge.
注意：使用所有共享目录会暴露安全风险，因为共享目录可能会使虚拟机中的程序在你不知情的情况下存取主机文件系统。
Caution Enabling all Shared folders can pose a security risk because a Shared folder might enable existing programs inside the virtual machine to access the host file system without your knowledge.
注意：使用所有共享目录会暴露安全风险，因为共享目录可能会使虚拟机中的程序在你不知情的情况下存取主机文件系统。
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