公开(公告)号：US20250156099A1

公开(公告)日：2025-05-15

申请号：US19022976

申请日：2025-01-15

Applicant: Micron Technology, Inc.

Inventor： Chunyu Sheng ,  Huachen Li ,  Xiaolai Zhu ,  Xiao Wang ,  Wenjun Wu

IPC: G06F3/06

Abstract: Methods, systems, and devices for optimization for unmap backlog operations in a memory system are described. A memory system may perform multiple iterations of an unmap process for a set of data in an unmap backlog. Each iteration may include storing a change log that indicates entries in a second physical pointer that have changed according to the unmap process and storing a page validity change log according to the second physical pointer. The memory system may include circuitry configured to merge the physical pointers to generate the page validity change logs. The circuitry may merge the page validity change logs with one or more page validity tables (PVTs) to update the one or more PVTs. After completing the iterations, the memory system may flush the one or more updated PVTs from a first memory device to a second memory device of the memory system.