Method for dynamically managing file memory area by nonvolatile random access memory chip

Abstract

The invention provides a method for dynamically managing a file memory area by a nonvolatile random access memory chip. The file memory area consists of N sub memory areas which have continuous addresses and are connected, a plurality of continuous memory blocks which are adjacent to an ith sub memory in an (i+1)th sub memory area are expropriated, or a plurality of continuous memory blocks which are adjacent to the ith sub storage area in an (i-1) sub storage area are expropriated. The invention also provides a memory structure, which utilizes an MRAM (Magnetic Random Access Memory) to store small files. The method for dynamically managing the file memory area and the memory structure which utilizes the MRAM to storage the small files are characterized in that the adjacent sub memory areas are managed by a dynamic management method; when the blocks of one sub memory area are used up or an amount of idle memory blocks is smaller than a set value, the memory space of the adjacent sub memory area is expropriated; and according to an application environment, the amount of the memory blocks of the sub memory areas can be dynamically regulated so as to improve the use ratio of the memory space.

Description

technical field [0001] The invention relates to the field of storage, in particular to a method for dynamically managing a storage area using a non-volatile random read-write memory chip and a storage structure for storing small files using MRAM. Background technique [0002] Now in computers, smartphones, and tablet computers, user data and files are stored in hard disks, or in NAND flash memory chips and solid-state hard disks composed of NAND flash memory. The replacement of traditional mechanical hard drives by NAND and solid-state drives is another major trend in industrial development. [0003] The NAND flash memory in the hard disk and solid-state disk is a block device (block device) that can be read and written as a whole. The smallest unit that can be read is called a page, and the smallest unit that can be erased is called a block. A block is often composed of many The pages are composed of pages, and the pages inside can be individually written after the block i...

AI Technical Summary

Problems solved by technology

[0017] But this method also has shortcomings, the total number of blocks in each storage area is fixed, and it lacks flexibility

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