The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 25, 2018

Filed:

Jul. 03, 2014
Applicant:

Sandisk Enterprise Ip Llc, Milpitas, CA (US);

Inventors:

Dharani Kotte, Fremont, CA (US);

Akshay Mathur, Los Gatos, CA (US);

Chayan Biswas, Newark, CA (US);

Sumant K. Patro, Fremont, CA (US);

Baskaran Kannan, Round Rock, TX (US);

Assignee:

SANDISK TECHNOLOGIES LLC, Plano, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/02 (2006.01); G06F 3/06 (2006.01); G06F 12/0871 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0269 (2013.01); G06F 3/064 (2013.01); G06F 3/0608 (2013.01); G06F 3/0616 (2013.01); G06F 3/0652 (2013.01); G06F 3/0653 (2013.01); G06F 3/0679 (2013.01); G06F 12/0246 (2013.01); G06F 12/0871 (2013.01); G06F 2212/1044 (2013.01); G06F 2212/152 (2013.01); G06F 2212/2022 (2013.01); G06F 2212/214 (2013.01); G06F 2212/222 (2013.01); G06F 2212/312 (2013.01); G06F 2212/7205 (2013.01); G06F 2212/7208 (2013.01);
Abstract

Systems, methods and/or devices are used to enable prioritizing garbage collection and block allocation based on I/O history for logical address regions. In one aspect, the method includes (1) receiving, at a storage device, a plurality of input/output (I/O) requests from a host, the plurality of I/O requests including read requests and write requests to be performed in a plurality of regions in a logical address space of the host, (2) in accordance with the plurality of I/O requests over a predetermined time period, identifying an idle region of the plurality of regions in the logical address space of the host, and (3) in accordance with the identification of the idle region, enabling garbage collection of data storage blocks, in the storage device, that store data in the idle region.


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