CA2088442A1 - Method and system for file system management using a flash-erasable, programmable, read-only memory - Google Patents
Method and system for file system management using a flash-erasable, programmable, read-only memoryInfo
- Publication number
- CA2088442A1 CA2088442A1 CA002088442A CA2088442A CA2088442A1 CA 2088442 A1 CA2088442 A1 CA 2088442A1 CA 002088442 A CA002088442 A CA 002088442A CA 2088442 A CA2088442 A CA 2088442A CA 2088442 A1 CA2088442 A1 CA 2088442A1
- Authority
- CA
- Canada
- Prior art keywords
- feprom
- allocation
- block
- erasable
- memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1435—Saving, restoring, recovering or retrying at system level using file system or storage system metadata
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/901—Indexing; Data structures therefor; Storage structures
- G06F16/9017—Indexing; Data structures therefor; Storage structures using directory or table look-up
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7205—Cleaning, compaction, garbage collection, erase control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99951—File or database maintenance
- Y10S707/99956—File allocation
Abstract
A method and system far memory management of a block-erasable flash-EProm. The system comprises a FEProm manager and a file system. The FEProm manager manages memory allocation and deallocation of the FEProm. The file system is a hierarchical directory system and uses the FEProm manager to allocate arid deallocate memory. In a preferred embodiment, the FEProm manager of the present invention provides for allocation of free space, deallocation of allocated space, and reclamation a.f deallocated space in a block-erasable FEProm.
Each block of the FEProm contains a block allocation structure, data regions, and free space. The block allocation structure contains an allocation array which describes the allocation of the data region.
Each block of the FEProm contains a block allocation structure, data regions, and free space. The block allocation structure contains an allocation array which describes the allocation of the data region.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002325812A CA2325812C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
CA002325810A CA2325810C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/828,763 US6256642B1 (en) | 1992-01-29 | 1992-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
US07/828,763 | 1992-01-29 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002325810A Division CA2325810C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
CA002325812A Division CA2325812C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2088442A1 true CA2088442A1 (en) | 1993-07-30 |
CA2088442C CA2088442C (en) | 2003-04-15 |
Family
ID=25252682
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002325812A Expired - Fee Related CA2325812C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
CA002325810A Expired - Fee Related CA2325810C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
CA002088442A Expired - Lifetime CA2088442C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002325812A Expired - Fee Related CA2325812C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
CA002325810A Expired - Fee Related CA2325810C (en) | 1992-01-29 | 1993-01-29 | Method and system for file system management using a flash-erasable, programmable, read-only memory |
Country Status (5)
Country | Link |
---|---|
US (3) | US6256642B1 (en) |
EP (1) | EP0557736B1 (en) |
JP (10) | JP3825479B2 (en) |
CA (3) | CA2325812C (en) |
DE (1) | DE69333906T2 (en) |
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JP2009146458A (en) | 2009-07-02 |
EP0557736A3 (en) | 1994-02-09 |
JP4485586B2 (en) | 2010-06-23 |
DE69333906D1 (en) | 2005-12-22 |
EP0557736B1 (en) | 2005-11-16 |
JP2011103137A (en) | 2011-05-26 |
CA2325810A1 (en) | 1993-07-30 |
JPH07191892A (en) | 1995-07-28 |
JP2010049713A (en) | 2010-03-04 |
JP2010049714A (en) | 2010-03-04 |
CA2325810C (en) | 2001-08-21 |
JP4365385B2 (en) | 2009-11-18 |
JP3825479B2 (en) | 2006-09-27 |
JP4608588B2 (en) | 2011-01-12 |
JP2006209808A (en) | 2006-08-10 |
JP2006209807A (en) | 2006-08-10 |
JP4858789B2 (en) | 2012-01-18 |
JP2010049712A (en) | 2010-03-04 |
US5898868A (en) | 1999-04-27 |
CA2325812A1 (en) | 1993-07-30 |
CA2088442C (en) | 2003-04-15 |
EP0557736A2 (en) | 1993-09-01 |
DE69333906T2 (en) | 2006-05-24 |
JP4608587B2 (en) | 2011-01-12 |
US5634050A (en) | 1997-05-27 |
JP2008282429A (en) | 2008-11-20 |
JP2011222051A (en) | 2011-11-04 |
JP4836217B2 (en) | 2011-12-14 |
CA2325812C (en) | 2001-12-18 |
JP4608589B2 (en) | 2011-01-12 |
US6256642B1 (en) | 2001-07-03 |
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