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:
Sep. 22, 2026
Filed:
Mar. 23, 2023
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Chandra Kumar Konamki Vijayamuneeswaralu, Redmond, WA (US);
Neal Robert Christiansen, Bellevue, WA (US);
Landy Wang, Honolulu, HI (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
Caching a memory descriptor across input/output (I/O) requests. Based at least on receiving a request from a buffer consumer to register a buffer, a memory descriptor describing a layout of a set of physical memory pages assigned to the buffer is created. Creating the memory descriptor includes assigning and locking the set of physical memory pages to the memory descriptor. For each I/O request of a plurality of I/O requests on the buffer, at least a subset of the memory descriptor for use by the I/O request is returned, and a reference count is used to track the I/O request as pending on the memory descriptor. Later, the memory descriptor is destroyed, including unlocking the set of physical memory pages, based at least on the reference count indicating that there is no pending I/O request on the memory descriptor.