多处理机环境下UNIX文件系统的设计和实现

The Design and Implementation of a Multiprocessor UNIX File System

本文论述了在多处理机环境下UNIX 文件系统的设计和实现,以保证文件系统运行的正确性和极大限度地开发信息处理的并发性。文中提出多处理机UNIX 文件系统的模型、结构及特点。着重论述多处理机UNIX 文件系统主要数据结构低层缓冲区和内部其他数据结构的组织和管理。最后论述了多处理机环境中出现的数据一致性问题。

This paper describes a method of designing and implementing a multiprocessor UNIXfile system based on modified Dijkstra’s semaphore,which can provide two levels of concurrent andexclusive access to the flie:one based on the buffer level and the other based on the file body so asto achieve better parallel access to a multiprocessor file system.The model,structure and characters ofthe multiprocessor UNIX file system,are presented with emphasis on the principal data structure:lowlevel buffer data structure and other internal data structures,and their management.Finally,data con-sistence in a multiprocessor environment is also discussed