Electronic device including storage device and controller and operating method thereof

Abstract

A storage device includes: a nonvolatile storage area for storing a plurality of map segments including information of one or more map entries representing mapping information between a logical address provided by an external device and a physical address corresponding to the logical address; a volatile storage area for temporarily storing journal data including information that keeps track of changes to the mapping information to enable for updating the mapping information; and a controller in communication with the nonvolatile storage area and the volatile storage area and configured to count a number of first map segments that store the updated mapping information, and updating the mapping information in the nonvolatile storage area according to a ratio of a number of logical addresses included in the journal data and the number of first map segments.

Dependencies are inferred from the claim text.