公开(公告)号：US10732898B2

公开(公告)日：2020-08-04

申请号：US16105723

申请日：2018-08-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liang Shi ,  Chun Xue ,  Qiao Li ,  Dongfang Shan ,  Jun Xu ,  Yuangang Wang

IPC: G06F3/06 ,  G11C11/56 ,  G06F12/02 ,  G11C16/28 ,  G11C16/26

Abstract: A method for accessing a flash memory device and a flash memory device. After receiving a write request for an address, a flash memory controller obtains an indicator of the address, where the indicator indicates a last access type of the address, which might be a write operation or a read operation. When determining the indicator indicates a write operation, which means the access type for the address is normally write operation, to save time, the flash memory controller perform a fast-write operation on the address, when the indicator indicates a read operation, which means there might be plenty of read operations on the address, to facilitate future read operation, the controller performs a slow-write operation on the address.

公开(公告)号：US20180357013A1

公开(公告)日：2018-12-13

申请号：US16105723

申请日：2018-08-20

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Liang Shi ,  Chun Xue ,  Qiao Li ,  Dongfang Shan ,  Jun Xu ,  Yuangang Wang

IPC: G06F3/06

Abstract: A method for accessing a flash memory device and a flash memory device. After receiving a write request for an address, a flash memory controller obtains an indicator of the address, where the indicator indicates a last access type of the address, which might be a write operation or a read operation. When determining the indicator indicates a write operation, which means the access type for the address is normally write operation, to save time, the flash memory controller perform a fast-write operation on the address, when the indicator indicates a read operation, which means there might be plenty of read operations on the address, to facilitate future read operation, the controller performs a slow-write operation on the address.

公开(公告)号：US10437519B2

公开(公告)日：2019-10-08

申请号：US15992516

申请日：2018-05-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chun Xue ,  Liang Shi ,  Congming Gao

IPC: G06F3/00 ,  G06F3/06 ,  H04W8/02 ,  G06F12/02

Abstract: A method for processing a write request is disclosed, the method includes: determining, by an IO scheduler, that current IO scheduling is in a blocked state; selecting, by the IO scheduler, a target synchronous write request from to-be-processed IO requests; adding, by the IO scheduler, an acceleration flag to the target synchronous write request, where the acceleration flag is used to instruct a flash memory controller to perform acceleration processing on the target synchronous write request by using idle space of a flash memory; after the flash memory controller receives, from the IO scheduler, the target synchronous write request, determining, by the flash memory controller, a size of the idle space of the flash memory; and when the size of the idle space of the flash memory is greater than a threshold, performing, by the flash memory controller, acceleration processing on the target synchronous write request.