公开(公告)号：US11269766B2

公开(公告)日：2022-03-08

申请号：US16995029

申请日：2020-08-17

Applicant: KIOXIA CORPORATION

Inventor： Kazuhiro Fukutomi ,  Kenichiro Yoshii ,  Shinichi Kanno ,  Shigehiro Asano

IPC: G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F12/02 ,  G06F3/06 ,  G06F12/16

Abstract: According to one embodiment, a write instructing unit instructs a data access unit to write, in a storage area of a data storage unit indicated by a first physical address, write object data, instructs a management information access unit to update address conversion information, and instructs a first access unit to update the first physical address. A compaction unit extracts a physical address of compaction object data, instructs the data access unit to read the compaction object data stored in a storage area of the data storage unit indicated by the physical address, instructs the data access unit to write the compaction object data in a storage area of the data storage unit indicated by a second physical address, instructs the management information access unit to update the address conversion information, and instructs a second access unit to update the second physical address.