The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2017
Filed:
Jun. 03, 2011
Daniel J. Post, Campbell, CA (US);
Eric Tamura, Sunnyvale, CA (US);
Vadim Khmelnitsky, Foster City, CA (US);
Nir J. Wakrat, Los Altos, CA (US);
Matthew Byom, San Jose, CA (US);
Daniel J. Post, Campbell, CA (US);
Eric Tamura, Sunnyvale, CA (US);
Vadim Khmelnitsky, Foster City, CA (US);
Nir J. Wakrat, Los Altos, CA (US);
Matthew Byom, San Jose, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
Systems and methods are provided for unmapping unused logical addresses at mount-time of a file system. An electronic device, which includes a non-volatile memory ('NVM'), may implement a file system that, at mount-time of the NVM, identifies all of the logical addresses associated with the NVM that are unallocated. The file system may then pass this information on to a NVM manager, such as in one or more unmap requests. This can ensure that the NVM manager does not maintain data associated with a logical address that is no longer needed by the file system.