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:
Mar. 22, 2022
Filed:
Aug. 19, 2019
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Nishesh Gupta, Sunnyvale, CA (US);
Julio Lopez, Mountain View, CA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A request is received to copy a file from a source to a target in a file system. The source is associated with a source inode, and the target is associated with a target inode. A list is generated of the one of the source or target inodes followed by another of the source or target inodes according to inode numbers identifying the source and target inodes. A first determination includes determining that the one inode is the source inode and the other inode is the target inode. When the first determination is made, a read rename lock is acquired for the source inode, followed by a write rename lock for the target inode, followed by a read inode lock for the source inode, followed by a write inode lock for the target inode. After the locks have been acquired, a chunk map of the source inode is copied to the target inode.