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:
Mar. 22, 2022

Filed:

Jan. 02, 2020
Applicant:

Emc Ip Holding Company Llc, Hopkinton, MA (US);

Inventors:

Murthy Mamidi, San Jose, CA (US);

George Mathew, Belmont, CA (US);

Pengju Shang, Milpitas, CA (US);

Assignee:

EMC IP HOLDING COMPANY LLC, Hopkinton, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/08 (2016.01); G06F 16/172 (2019.01); G06F 12/0866 (2016.01); G06F 16/16 (2019.01); G06F 16/182 (2019.01); G06F 12/0888 (2016.01);
U.S. Cl.
CPC ...
G06F 16/172 (2019.01); G06F 12/0866 (2013.01); G06F 12/0888 (2013.01); G06F 16/164 (2019.01); G06F 16/182 (2019.01); G06F 2212/1024 (2013.01); G06F 2212/1044 (2013.01); G06F 2212/1056 (2013.01); G06F 2212/154 (2013.01); G06F 2212/163 (2013.01); G06F 2212/214 (2013.01); G06F 2212/222 (2013.01); G06F 2212/2515 (2013.01); G06F 2212/263 (2013.01); G06F 2212/313 (2013.01); G06F 2212/466 (2013.01); G06F 2212/7205 (2013.01);
Abstract

In one example, a method includes receiving metadata in the form of a modification to metadata represented by a file system namespace abstraction, wherein the file system namespace abstraction corresponds to less than an entire file system namespace, and the file system namespace abstraction includes one or more pages, and one of the pages corresponds to a particular cached block, updating the file system namespace abstraction based on the received metadata, determining if caching is enabled for the file system namespace abstraction, when caching is enabled for the file system namespace abstraction, caching the updated file system namespace abstraction in SSD storage that includes the cached block, and maintaining a status of the cached block in a Dtable of the SSD storage.


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