Storage apparatus managing system and storage apparatus managing method for increasing data reading speed

• US 10,776,261 B2
• Filed: 07/05/2018
• Issued: 09/15/2020
• Est. Priority Date: 07/06/2017
• Status: Active Grant

• Current Assignee: Silicon Motion Incorporated Taiwan (Silicon Motion)
• Original Assignee: Silicon Motion Incorporated Taiwan (Silicon Motion)
• Inventors: Lin, Chao-Yu
• Primary Examiner(s): Bragdon, Reginald G
• Assistant Examiner(s): Ho, Aaron D
• Application Number:
  US16/027,388
• Publication Number:
  US 20190012261A1
• Time in Patent Office: 803 Days
• Field of Search: 711103
• CPC Class Codes: G06F 12/0246 in block erasable memory, e.g. flash memory
• CPC Class Codes: G06F 12/0868 Data transfer between cache memory and other subsystems, e.g. storage devices or host systems
• CPC Class Codes: G06F 12/0871 Allocation or management of cache space
• CPC Class Codes: G06F 2212/171 Portable consumer electronics, e.g. mobile phone
• CPC Class Codes: G06F 2212/2022 Flash memory
• CPC Class Codes: G06F 2212/222 Non-volatile memory
• CPC Class Codes: G06F 2212/46 Caching storage objects of specific type in disk cache
• CPC Class Codes: G06F 2212/463 File
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0611 in relation to response time
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0656 Data buffering arrangements
• CPC Class Codes: G06F 3/0658 Controller construction arrangements
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G06F 3/0683 Plurality of storage devices

Abstract

A storage apparatus managing method, applied to a first storage apparatus and a second storage apparatus coupled to an electronic apparatus, wherein the first storage apparatus comprises a local registering region and a global registering region, comprising: (a) receiving a read request indicating reading a target data unit from the second storage apparatus; (b) confirming whether the global registering region has the target data unit; (c) if yes, reading the target data unit from the global registering region, if not, confirming whether the local registering region has the target data unit; and (d) reading the target data unit from the local registering region if the local registering region has the target data unit, reading the target data unit from the second storage apparatus if the local registering region does not have the target data unit.

Claims

1. A storage apparatus managing system, for managing a first storage apparatus and a second storage apparatus coupled to an electronic apparatus, wherein the first storage apparatus comprises a local registering region and a global registering region, the global registering region is utilized for registering data that has been read from the second storage apparatus, and the local registering region is utilized for registering data that has been read from the second storage apparatus and other candidate data, the storage apparatus managing system comprising:

a processor, storing a storage apparatus managing program; and

a control circuit, for controlling the second storage apparatus;

wherein if the storage apparatus managing program receives a read request indicating reading a target data unit from the second storage apparatus, the storage apparatus managing program will firstly confirm whether the global registering region has the target data unit;

if the global registering region has the target data unit, then the storage apparatus managing program reads the target data unit from the global registering region, and if the global registering region does not have the target data unit, then the storage apparatus managing program confirms whether the local registering region has the target data unit;

if the local registering region has the target data unit, then the storage apparatus managing program makes the electronic apparatus to read the target data unit from the local registering region, and if the local registering region does not have the target data unit, then the storage apparatus managing program makes the electronic apparatus to read the target data unit from the second storage apparatus through the control circuit;

wherein if the target data unit is read from the local registering region or the second storage apparatus, the storage apparatus managing program copies the target data unit to the global registering region; and

wherein the global registering region comprises a global registering buffer region and a global registering file region, the global registering buffer region stores non-file data, and the global registering file region stores files;

and when the target data unit is copied to the global registering region, the storage apparatus managing program firstly confirms whether there is enough space in the global registering buffer region;

if there is, then the storage apparatus managing program copies the target data unit to the global registering buffer region, if there is not, then the storage apparatus managing program confirms whether there is enough space in the global registering file region, and if the global registering file region has enough space, then copies the target data unit to the global registering file region.

2. The storage apparatus managing system of claim 1, wherein the first storage apparatus is an internal storage apparatus inside the electronic apparatus, and the second storage apparatus is an external storage apparatus independent of the electronic apparatus.

3. The storage apparatus managing system of claim 1, wherein the storage apparatus managing program firstly confirms whether non-file data of the global registering region comprises the target data unit;

if not, then confirms whether file of the global registering region comprises the target data unit.

4. The storage apparatus managing system of claim 1, wherein if the storage apparatus managing program detects that the second storage apparatus is removed from the electronic apparatus, the storage apparatus managing program deletes the data stored in the global registering region.

5. The storage apparatus managing system of claim 1, after the electronic apparatus reads the target data unit from the second storage apparatus, the storage apparatus managing program will copy at least one candidate data unit comprising the target data unit to the local registering region.

6. The storage apparatus managing system of claim 5, wherein after the electronic apparatus reads the file comprising the target data unit from the local registering region, the global registering region, or the second storage apparatus, the storage apparatus managing program deletes the candidate data units stored in the local registering region.

7. The storage apparatus managing system of claim 1, wherein the storage apparatus managing program modifies the read target data unit to be a modified target data unit, and when the storage apparatus managing program writes the modified target data unit into the second storage apparatus to replace the target data unit, if the local registering region or the global registering region has the modified target data unit, then the storage apparatus managing program also writes the modified target data unit into the local registering region or the global registering region to replace the target data unit.

8. The storage apparatus managing system of claim 1, wherein the storage apparatus managing system is a mobile phone, the first storage apparatus is a mobile phone, the second storage apparatus is a flash disk coupled to the mobile phone, and the mobile phone comprises:

a control module circuit, for controlling the flash disk; and

a processor, storing a storage apparatus managing program, wherein when the mobile phone reads the target data unit from the flash disk, the storage apparatus managing program makes the control module to copy the target data unit to the cache memory and make the mobile phone read the target data unit from the flash disk or the cache memory.

9. The storage apparatus managing system of claim 8, wherein if the storage apparatus managing program detects that the flash disk is removed from the electronic apparatus, the storage apparatus managing program deletes at least one portion of internal storage data stored in the global registering region.

10. The storage apparatus managing system of claim 8, wherein function of copying the target data unit to the cache memory comprises:

copying a plurality of candidate data units comprising the target data unit to the cache memory.

11. The storage apparatus managing system of claim 10, wherein after the electronic apparatus reads data comprising the target data unit from the cache memory or the flash disk, the storage apparatus managing program deletes the candidate data units stored in the cache memory.

12. The storage apparatus managing system of claim 8, if the target data unit is modified to be a modified target data unit and is written to the flash disk to replace the target data unit, the storage apparatus managing program also writes the modified target data unit into the cache memory to replace the target data unit.

13. A storage apparatus managing system, for managing a first storage apparatus and a second storage apparatus coupled to an electronic apparatus, wherein the first storage apparatus comprises a local registering region and a global registering region, the global registering region is utilized for registering data that has been read from the second storage apparatus, and the local registering region is utilized for registering data that has been read from the second storage apparatus and other candidate data, the storage apparatus managing system comprising:

a processor, storing a storage apparatus managing program; and

a control circuit, for controlling the second storage apparatus;

wherein if the storage apparatus managing program receives a read request indicating reading a target data unit from the second storage apparatus, the storage apparatus managing program will firstly confirm whether the global registering region has the target data unit;

if the global registering region has the target data unit, then the storage apparatus managing program reads the target data unit from the global registering region, and if the global registering region does not have the target data unit, then the storage apparatus managing program confirms whether the local registering region has the target data unit;

if the local registering region has the target data unit, then the storage apparatus managing program makes the electronic apparatus to read the target data unit from the local registering region, and if the local registering region does not have the target data unit, then the storage apparatus managing program makes the electronic apparatus to read the target data unit from the second storage apparatus through the control circuit;

wherein if the target data unit is read from the local registering region or the second storage apparatus, the storage apparatus managing program copies the target data unit to the global registering region; and

wherein the global registering region comprises a global registering buffer region and a global registering file region, the global registering buffer region stores non-file data, and the global registering file region stores files;

wherein when the target data unit is copied to the global registering region, the storage apparatus managing program firstly confirms whether there is enough space in the global registering buffer region;

if there is, then the storage apparatus managing program copies the target data unit to the global registering buffer region, if there is not, then the storage apparatus managing program converts at least one part of the data of the global registering buffer region to at least one file and stores the at least one file in the global registering file region, and then stores the target data unit in the global registering buffer region.