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Data writing method and device based on flash memory

A data writing and data technology, applied in the computer field, can solve problems such as write amplification

Active Publication Date: 2015-08-12
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on this, it is necessary to address the problem of write amplification in Nand-type flash memory, and provide a method and device for writing data based on flash memory

Method used

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  • Data writing method and device based on flash memory
  • Data writing method and device based on flash memory
  • Data writing method and device based on flash memory

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Embodiment Construction

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0026] Unless otherwise specifically and clearly described in the context, the elements and components in the present invention may exist in a single form or a plurality of forms, which is not limited by the present invention. Although the steps in the present invention are arranged with numbers, they are not used to limit the sequence of the steps. Unless the sequence of the steps is explicitly stated or the execution of a certain step requires other steps as the basis, the relative sequence of the steps can be adjusted. It will be understood that the term "and / or" as used herein refers t...

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Abstract

The invention provides a data writing method based on a flash memory, wherein the method comprises the steps as follows: receiving original data writing requests; aggregating a plurality of original data writing requests according to data size of data to be written corresponding to the original data writing requests so that the total amount of the data size of the data to be written corresponding to aggregated data writing requests is matched with positive integer multiples of block size; determining leisure physical blocks whose number is corresponded to the multiple of the matched block size in the flash memory according to the aggregated data writing requests, and writing the data to be written corresponding to the aggregated data writing requests in the determined leisure physical blocks. The data writing method based on the flash memory of the invention ensures the consistency of write-in and erasure because the write-in and erasure of data are carried out by using block as a unit so as to effectively solve the problem of write amplification. The invention further provides a data writing device based on the flash memory.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method and device for writing data based on flash memory. Background technique [0002] Flash memory is a widely used storage medium, among which Nand Flash (Nand type flash memory, a non-volatile flash memory) is a new type of flash memory. The advantages of vibration are widely used in military, vehicle, industrial control, video surveillance, power, medical, Internet and other fields. [0003] The basic structure of Nand-type flash memory includes several blocks, and each block includes several pages. The size of the block is larger than the size of the page. Taking the current typical Nand flash memory as an example, the block size is generally 2M bytes, and the page size is generally 8K bytes. [0004] Nand-type flash memory can be repeatedly written, but an erasing operation must be performed before repeated writing, and the erasing operation of Nand-type flas...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F12/02
Inventor 高剑林王银虎吴高峰
Owner TENCENT TECH (SHENZHEN) CO LTD
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