Invention Grant
- Patent Title: Direct access to de-duplicated data units in memory-based file systems
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Application No.: US16287880Application Date: 2019-02-27
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Publication No.: US10606500B2Publication Date: 2020-03-31
- Inventor: Amit Golander , Yigal Korman , Boaz Harrosh
- Applicant: NETAPP, INC.
- Applicant Address: US CA Sunnyvale
- Assignee: NETAPP, INC.
- Current Assignee: NETAPP, INC.
- Current Assignee Address: US CA Sunnyvale
- Agency: Klein, O'Neill & Singh, LLP
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F12/1009 ; G06F12/02 ; G06F12/06 ; G06F12/14 ; G06F12/0866

Abstract:
Method, system and product for direct access to de-duplicated data units in memory-based file systems. The method comprising: updating a page entry in a page table of a process to include a direct access pointer to a de-duplicated data unit retained by the memory-based file system, wherein the page entry is set to be write protected; detecting a page fault occurring due to the process performing a store instruction to the de-duplicated data unit; and in response to said detecting: allocating a new data unit; copying content of the de-duplicated data unit to the new data unit; and replacing the direct access pointer to the de-duplicated data unit with a direct access pointer to the new data unit.
Public/Granted literature
- US20190196735A1 DIRECT ACCESS TO DE-DUPLICATED DATA UNITS IN MEMORY-BASED FILE SYSTEMS Public/Granted day:2019-06-27
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