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计算机工程 ›› 2008, Vol. 34 ›› Issue (18): 278-280. doi: 10.3969/j.issn.1000-3428.2008.18.100

• 开发研究与设计技术 • 上一篇    下一篇

闪存文件系统的快速挂载机制设计与实现

焦 磊,张延园   

  1. (西北工业大学计算机学院,西安 710072)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-20 发布日期:2008-09-20

Design and Implementation of Fast Mounting Mechanism for Flash File System

JIAO Lei, ZHANG Yan-yuan   

  1. (School of Computer Science, Northwestern Polytechnical University, Xi’an 710072)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-20 Published:2008-09-20

摘要: 基于嵌入式文件系统CFFS提出一种快速挂载机制。该机制引入“静态超级块”、“引用节点”以及“页位图”等数据结构并采取相应算法,避免了在文件系统挂载过程中进行的全芯片扫描。测试表明,这种快速挂载机制减少了闪存文件系统在大容量NAND芯片上的挂载时间。

关键词: 嵌入式系统, NAND闪存, 文件系统, 快速挂载

Abstract: Based on embedded file system Compact Flash File System(CFFS) which is oriented for large-scale NAND flash chips, this paper proposes a fast mounting mechanism. The mechanism uses the data structures such as “static super block”, “reference node”, “page bit map” and adopts some corresponding algorithms, soit avoids the full scanning of the flash chip when the file system is being mounted. Test shows that the mechanism can reduce the mounting time significantly when the file system is mounted on large-scale NAND flash chips.

Key words: embedded system, NAND flash, file system, fast mounting

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