File system for dividing buffer areas into different block sizes for system and user data

摘要

A file system in a computer for managing buffer areas. A buffer area includes file input and output data and is divided into a plurality of areas for each application object such as system data and user data. Each divided buffer area is independently managed by a buffer management processing unit for controlling the acquisition and release of buffers requested. A circuit for designating a block size and a lower limit value of an assignable block is provided for each buffer area divided according to an application object to realize effective use of buffer areas and a reduction in the waiting time for the acquisition of buffers.