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.
Patent No.:
Date of Patent:
Jul. 14, 2015
Filed:
Oct. 16, 2012
Apple Inc., Cupertino, CA (US);
Wenguang Wang, Santa Clara, CA (US);
David A. Majnemer, Great Neck, NY (US);
Apple Inc., Cupertino, CA (US);
Abstract
In one embodiment, a method for managing access to a fast non-volatile storage device, such as a solid state device, and a slower non-volatile storage device, such as a magnetic hard drive, can include a method of managing a sparse logical volume in which unmapped blocks of the logical volume are not allocated until use. In one embodiment, a method of sparse hole filling operates in which range locks are dynamically adjusted to perform allocations for sparse hole filling, and then re-adjusted to perform standard operations using a byte range lock. In one embodiment, a high level data structure can be used in the range lock service in the form of an ordered search tree, which could use any search tree algorithm, such as red-black tree, AVL tree, splay tree, etc.