Disk caching method for writing data from computer memory includ

Details Disk caching method for writing data from computer memory includ Disk caching method for writing data from computer memory includ

1991-03-22

1994-01-04

Dixon, Joseph L.

Boots, shoes, and leggings

3642542, 3642543, 3642711, 3642386, 364DIG1, G06F 1202

Patent

active

052768406

ABSTRACT:
A method for synchronously writing data from memory to a disk drive memory device minimizes the number of actual I/O operations by writing data to disk in large chunks. The method comprises the steps of: allocating an array for saving buffer pointers; mapping the data to the disk space; allocating a buffer for each block of disk space; copying the data into the buffer; saving a pointer to the buffer in the array and then writing physically adjacent blocks to disk in one I/O operation. The method also updates and reads address blocks in the buffer pool and writes them to disk only at the end of the write request.

REFERENCES:
patent: 4410942 (1983-10-01), Milligan et al.
patent: 5021946 (1991-06-01), Korty
patent: 5053945 (1991-10-01), Whisler
Marshall K. McKusick, William N. Joy, Samuel J. Lefflert and Robert S. Fabry, "A Fast File System for UNIX," pp. 1-16, Jul. 27, 1983, Berkeley, Calif.

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