Patent ID: 9158671
Filing Date: 2015-10-13
Classification: G06F,G11C

Abstract:
1. A memory system comprising: a nonvolatile memory including a main region and a cache region; and a memory controller configured to control operation of the nonvolatile memory and including a migration manager that manages file data migration from the cache region to the main region with reference to a Most Recently Used (MRU)/Least Recently Used (LRU) list containing entries for file data units stored in the cache region, wherein the migration manager defines the MRU/LRU list as an arrangement of highest to lowest queue locations, such that entries related to more recently written file data units are arranged higher in queue location than entries related to more recently read file data units, and entries related to more recently read file data units are arranged higher in queue location than entries related to less recently written file data units and entries related to less recently read file data units.