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Torn write mitigation

  • US 9,448,896 B2
  • Filed: 08/07/2013
  • Issued: 09/20/2016
  • Est. Priority Date: 08/07/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting a power loss to a memory;

    in response to a write operation to the memory being in progress at or about a time of the power loss,determining if write data corresponding to torn write data are redundantly stored, the torn write data comprising data left in a degraded, unverified, or uncorrectable state as a result of the power loss;

    storing the write data and metadata that describes the write data to a non-volatile cache in response to the write data not being redundantly stored; and

    not storing the write data and the metadata to the non-volatile cache in response to the write data being redundantly stored.

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