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Method and apparatus for controlling exclusive access to a shared resource in a data storage system

  • US 7,246,187 B1
  • Filed: 09/30/2004
  • Issued: 07/17/2007
  • Est. Priority Date: 11/28/2000
  • Status: Expired due to Term
First Claim
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1. A method for controlling exclusive access to a resource shared by a plurality of processors in a data storage system, comprising:

  • providing for each processor a system lock procedure to permit a processor executing the system lock procedure to obtain a lock on the shared resource preventing other processors from accessing the shared resource; and

    providing for each processor a faked lock procedure to indicate to the system lock procedure that a processor executing the faked lock procedure has a lock on the shared resource where such a lock does not exist, and wherein the faked lock procedure does not prevent other processors from accessing the shared resource.

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