Memory system, memory controller, and operation method of memory system for setting lock on map segments cached in map cache
US11327902B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Sep 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure includes a memory system, a memory controller, and an operation method thereof. The memory system may cache a subset of all map segments in a mapping table indicating mapping information between logical addresses and physical addresses in a map cache, may select map segments on which locking is to be set from the map segments cached in the map cache so as not to be evicted from the map cache based on information on all commands received from a host during a set period of time, and may set lock flags for the map segments on which locking is to be set. Accordingly, the memory system may reduce the overhead occurring in reloading previously evicted map segments in the process of updating a mapping table, and may optimize update performance for a mapping table within a limit that guarantees caching performance to a predetermined level or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.