Method to reduce flash memory IOs with host maintained address mapping table
US9858008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2015 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Mar 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system, method and program product for transferring contiguous blocks of data between a host storage and a flash memory. A method is disclosed that includes: receiving from a host at a flash controller a host command that specifies a contiguous set of LBAs and specifies a corresponding sub-section of an LBA to PBA mapping table; fetching the sub-section of the LBA to PBA mapping table from the host and storing the sub-section in a sub-mapping table; and for each LBA in the contiguous set of LBAs, performing a look-up into the sub-mapping table to retrieve a corresponding PBA and using the corresponding PBA to effectuate a data transfer between the host and flash memory from the flash controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.