Importance

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Abstract

A novel locking approach for managing access to resources generally includes generating and storing duplicate lock data that may be used if the original lock data upon which the duplicate lock data is based is lost or otherwise becomes unavailable. In response to granting a lock on a resource to a first process, lock data is generated that indicates that the lock on the resource was granted to the first process. Duplicate lock data is generated that indicates that the lock on the resource was granted to the first process. When a change is made to the lock data, the duplicate lock data is updated to reflect the change made to the lock data. If the lock data is lost or otherwise becomes unavailable, the duplicate lock data may be used to continue managing access to the resource.

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First Claim