Method and apparatus for flash memory reclaim

Details Method and apparatus for flash memory reclaim Method and apparatus for flash memory reclaim

2007-06-28

2010-10-26

Kim, Hong (Department: 2185)

Data processing: database and file management or data structures

File management

File systems

C707S813000, C711S170000, C711S103000

Reexamination Certificate

active

07822791

ABSTRACT:
Machine-readable media, methods, apparatus and system for flash memory reclaim are described. In some embodiment, a system may comprise a flash memory having a plurality of flash memory blocks, and a managing logic to manage a file operation on the flash memory. The managing logic may, during a foreground reclaim of the flash memory which is triggered by the file operation, select a foreground reclaim block from the plurality of flash memory blocks; search the foreground reclaim block for valid data; and copy the valid data from the foreground reclaim block to a flash memory block of the plurality of flash memory blocks, if the valid data is found. The managing logic may further erase the foreground reclaim block during a next reclaim of the flash memory.

REFERENCES:
patent: 5671388 (1997-09-01), Hasbun
patent: 7062616 (2006-06-01), Sadhasivan et al.
patent: 2007/0030734 (2007-02-01), Sinclair et al.
patent: 2007/0150691 (2007-06-01), Illendula et al.
patent: 2007/0153585 (2007-07-01), Blum
patent: 2007/0233752 (2007-10-01), Bangalore et al.
patent: 2007/0239928 (2007-10-01), Gera et al.

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