Invention Application
- Patent Title: LBA BITMAP USAGE
- Patent Title (中): LBA BITMAP使用
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Application No.: US14754433Application Date: 2015-06-29
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Publication No.: US20150301938A1Publication Date: 2015-10-22
- Inventor: Daniel J. Post , Nir Jacob Wakrat , Vadim Khmelnitsky
- Applicant: Apple Inc.
- Main IPC: G06F12/02
- IPC: G06F12/02

Abstract:
Systems and methods are disclosed for logical block address (“LBA) bitmap usage for a system having non-volatile memory (“NVM”). A bitmap can be stored in volatile memory of the system, where the bitmap can store the mapping statuses of one or more logical addresses. By using the bitmap, the system can determine the mapping status of a LBA without having to access the NVM. In addition, the system can update the mapping status of a LBA with minimal NVM accesses. By reducing the number of NVM accesses, the system can avoid triggering a garbage collection process, which can improve overall system performance.
Public/Granted literature
- US09477596B2 LBA bitmap usage Public/Granted day:2016-10-25
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