Patents by Inventor David J. Kleikamp

David J. Kleikamp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for implementing persistent file pre-allocation
    Patent number: 8639656
    Abstract: A method and apparatus are provided for pre-allocating non-initialized blocks of data in a file system. Each file contains a primary i-node to maintain file metadata. A secondary i-node is created and associated with the primary i-node. The secondary i-node contains non-initialized data blocks, and the primary i-node contains valid and initialized data blocks. A write operation to a non-initialized data block in a pre-allocated range stored in the secondary i-node directs the data block from the secondary i-node to the primary i-node.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: January 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Suparna Bhattacharya, Mingming Cao, David J. Kleikamp, Theodore Y. T. Tso
  • Method For Implementing Persistent File Pre-Allocation
    Publication number: 20080189342
    Abstract: A method and apparatus are provided for pre-allocating non-initialized blocks of data in a file system. Each file contains a primary i-node to maintain file metadata. A secondary i-node is created and associated with the primary i-node. The secondary i-node contains non-initialized data blocks, and the primary i-node contains valid and initialized data blocks. A write operation to a non-initialized data block in a pre-allocated range stored in the secondary i-node directs the data block from the secondary i-node to the primary i-node.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 7, 2008
    Inventors: Suparna Bhattacharya, Mingming Cao, David J. Kleikamp, Theodore Y.T. Tso