Information processing system and nonvolatile storage unit

摘要

According to one embodiment, a memory system includes a nonvolatile storage device and an information processing apparatus. The information processing apparatus includes a first control circuit configured to send a delete notification to the nonvolatile storage device to invalidate data in a first logical address area when read data corresponding to the first logical address area is the same as data expressed by a first function. The nonvolatile storage device include a nonvolatile storage medium, a management table configured to associate a logical address corresponding to valid data for the nonvolatile storage device with a physical address, and a second control circuit configured to update the management table to invalidate a logical address designated by the delete notification, and to send the data expressed by the first function to the information processing apparatus when a logical address included in a read instruction received from the information processing apparatus is invalid.

主权项

1. An information processing system comprising:
a nonvolatile storage unit and an information processing apparatus that communicates with the nonvolatile storage unit, the nonvolatile storage unit comprising: a nonvolatile storage medium; and a first control unit configured to invalidate one or more mappings from a logical address region specified by a received delete notification to the nonvolatile storage medium, and to transmit data indicated by a first function to the information processing apparatus when a logical address region specified by a received read command is not mapped to the nonvolatile storage medium, and the information processing apparatus comprising a second control unit configured: to read data from a first logical address region of the nonvolatile storage unit, to determine whether data read from the first logical address region is identical with the data indicated by the first function, and to send the delete notification to the nonvolatile storage unit to invalidate one or more mappings from the first logical address region to the nonvolatile storage medium when the read data is identical with the data indicated by the first function.