Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reexamination Certificate
2008-03-17
2010-02-09
Kindred, Alford W (Department: 2181)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S041000
Reexamination Certificate
active
07660919
ABSTRACT:
A system for controlling I/O transfers includes a host system or initiator including an adapter driver layer; and a storage controller. The storage controller includes a priority store and an operation queue. The adapter driver is selectively responsive to a datapath command from an initiator application for setting a default I/O priority for a specified logical unit, for storing the default I/O priority for the logical unit to a priority store of the storage controller, and selectively responsive to a data transfer command from an initiator application for storing the data transfer command to the storage controller. The storage controller is responsive to the datapath command for storing the I/O priority default value for the logical unit to the priority store; and responsive to the data transfer command with respect to the logical unit for queuing the data transfer command for execution based on the I/O priority default value.
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International Business Machines - Corporation
Kindred Alford W
Konrad Raynes and Victor LLP
Martinez David E
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