Method and apparatus for caching file control information corres

Details Method and apparatus for caching file control information corres Method and apparatus for caching file control information corres

1996-07-01

1999-11-30

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

G06F 1208

Patent

active

059960477

ABSTRACT:
A method and system for managing control information associated with a file is disclosed. According to the method, a cache is established in a first file block for storing a second type of file control data. The cache has a cache range. In response to receiving a command to write the file, a first and second type of file control data is generated. The second type of file control data has a logical block number identifying a location in the second file block where the second type of file control data is to be stored. The first type of file control data is stored in the first file block. If the logical block number is within the cache range, then the second type of file control data is stored in the cache. If the logical block number is outside the cache range, then the cache is flushed by copying the previously stored second type of file control data in the cache to a second file block. The second type of file control data is then written into the cache.

REFERENCES:
patent: 5218695 (1993-06-01), Noveck et al.
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patent: 5355453 (1994-10-01), Row et al.
patent: 5519853 (1996-05-01), Moran et al.
patent: 5666532 (1997-09-01), Saks et al.
patent: 5701516 (1997-12-01), Cheng et al.

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