Mount-time unmapping of unused logical addresses in non-volatile memory systems
US9727570B2 · kind B2 · utility
7Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2011 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0644
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.