Electrical computers and digital processing systems: memory – Addressing combined with specific memory configuration or... – Dynamic-type storage device
Patent
1997-03-07
2000-02-08
Lane, Jack A.
Electrical computers and digital processing systems: memory
Addressing combined with specific memory configuration or...
Dynamic-type storage device
711111, 707205, G06F 1730
Patent
active
060237449
ABSTRACT:
A method and mechanism for rapidly freeing storage space allocated to any logical portion of a file. An application program provides the file system with information indicating a block of logical data to free. The file system converts the information to the physical allocation units such as the clusters corresponding to the logical block of data, and manipulates the file's meta data to indicate that the physical space is no longer allocated to the file. The file system then adds the space to disk free space. Applications such as merge applications and those managing FIFO queues may use the method and mechanism to shrink a file from the start of the file toward the end thereof without copying the logical data or adjusting internal pointers relative to the logical file data.
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Copy of International Search Report in Corresponding PCT Application No. PCT/US98/04567.
Berkowitz Brian T.
Milewski Bartosz B.
Peltonen Kyle G.
Shoroff Srikanth
Zbikowski Mark J.
Lane Jack A.
Microsoft Corporation
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