Writing volatile scattered memory metadata to flash device

1. A method, comprising:

requesting an update on a control data in at least one flash block in a storage memory;

replicating, from the storage memory to a cache memory, the control data to be updated;

moving a clean cache link list in the cache memory to a dirty cache link list in the cache memory so that the dirty cache link list is changed to reflect the update on the control data, wherein the dirty cache link list will first contain the control data without the update prior to moving the clean cache link list to the dirty cache link list, and wherein the dirty cache link list is changed into an updated control data after the control data is updated and the clean cache link list is moved to the dirty cache link list;

moving the dirty cache link list to a for-flush link list in the cache memory so that the for-flush link list will contain the updated control data; and

asking for a free flash page in the storage memory;

and writing the updated control data from the for-flush link list to the free flash page in the storage memory.

2. The method of claim 1 , wherein the cache memory is used as a temporary location for modifying the control data.

3. The method of claim 1 , wherein the at least one flash block comprises at least one flash page and wherein the at least one flash page comprises a control data identifier information and a control data information.

4. The method of claim 1 , further comprising:

returning the for-flush link list to the clean cache link list in the cache memory.

5. The method of claim 1 , wherein the dirty cache link list is moved to the for-flush link list prior to writing the updated control data to the storage memory.

6. The method of claim 1 , wherein the storage memory comprises at least one solid state drive (SSD).

7. The method of claim 1 , wherein the storage memory comprises at least one flash memory device.

8. An apparatus, comprising:

a control data flushing system configured to:

request an update on a control data in at least one flash block in a storage memory;

replicate, from the storage memory to a cache memory, the control data to be updated;

move a clean cache link list in the cache memory to a dirty cache link list in the cache memory so that the dirty cache link list is changed to reflect the update on the control data, wherein the dirty cache link list will first contain the control data without the update prior to moving the clean cache link list to the dirty cache link list, and wherein the dirty cache link list is changed into an updated control data after the control data is updated and the clean cache link list is moved to the dirty cache link list;

move the dirty cache link list to a for-flush link list in the cache memory so that the for-flush link list will contain the updated control data;

ask for a free flash page in the storage memory; and

write the updated control data from the for-flush link list to the free flash page in the storage memory.

9. The apparatus of claim 8 , wherein the cache memory is used as a temporary location for modifying the control data.

10. The apparatus of claim 8 , wherein the at least one flash block comprises at least one flash page and wherein the at least one flash page comprises a control data identifier information and a control data information.

11. The apparatus of claim 8 , wherein the control data flushing system is configured to return the for-flush link list to the clean cache link list in the cache memory.

12. The apparatus of claim 8 , wherein the dirty cache link list is moved to the for-flush link list prior to writing the updated control data to the storage memory.

13. The apparatus of claim 8 , wherein the storage memory comprises at least one solid state drive (SSD).

14. The apparatus of claim 8 , wherein the storage memory comprises at least one flash memory device.

15. An article of manufacture, comprising:

a non-transitory computer-readable medium having stored thereon instructions operable to permit an apparatus to perform a method comprising:

requesting an update on a control data in at least one flash block in a storage memory;

replicating, from the storage memory to a cache memory, the control data to be updated;

moving a clean cache link list in the cache memory to a dirty cache link list in the cache memory so that the dirty cache link list is changed to reflect the update on the control data, wherein the dirty cache link list will first contain the control data without the update prior to moving the clean cache link list to the dirty cache link list, and wherein the dirty cache link list is changed into an updated control data after the control data is updated and the clean cache link list is moved to the dirty cache link list;

moving the dirty cache link list to a for-flush link list in the cache memory so that the for-flush link list will contain the updated control data;

asking for a free flash page in the storage memory; and

writing the updated control data from the for-flush link list to the free flash page in the storage memory.

16. The article of manufacture of claim 15 , wherein the instructions are operable to permit the apparatus to perform a method further comprising: returning the for-flush link list to the clean cache link list in the cache memory.

17. The article of manufacture of claim 15 , wherein the dirty cache link list is moved to the for-flush link list prior to writing the updated control data to the storage memory.

18. The article of manufacture of claim 15 , wherein the storage memory comprises at least one solid state drive (SSD).

19. The article of manufacture of claim 15 , wherein the storage memory comprises at least one flash memory device.

20. The article of manufacture of claim 15 , wherein the cache memory is used as a temporary location for modifying the control data.