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FAST AND EFFICIENT METHOD FOR DELETING VERY LARGE FILES FROM A FILESYSTEM

  • US 20100290755A1
  • Filed: 07/26/2010
  • Published: 11/18/2010
  • Est. Priority Date: 06/30/2006
  • Status: Active Grant
First Claim
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1. A digital video recorder comprising:

  • a processor; and

    a memory, comprising;

    a first target file associated with one or more first data blocks and with a first file record;

    a second target file associated with one or more second data blocks and with a second file record; and

    a single garbage collection file record, wherein the garbage collection file record is configured to only point to data blocks of files marked for deletion;

    wherein the processor is configured to;

    copy an address of the one or more first data blocks associated with the first target file, from the first file record associated with the first target file, to the garbage collection file record,copy an address of the one or more second data blocks associated with the second target file, from the second file record associated with the second target file, to the garbage collection file record, andtraverse the garbage collection file record and free the data blocks of the files marked for deletion.

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