发明名称 |
Apparatus, system, and method for efficient mapping of virtual and physical addresses |
摘要 |
An apparatus, system, and method are disclosed for efficiently mapping virtual and physical addresses. A forward mapping module uses a forward map to identify physical addresses of data of a data segment from a virtual address. The data segment is identified in a storage request. The virtual addresses include discrete addresses within a virtual address space where the virtual addresses sparsely populate the virtual address space. A reverse mapping module uses a reverse map to determine a virtual address of a data segment from a physical address. The reverse map maps the data storage device into erase regions such that a portion of the reverse map spans an erase region of the data storage device erased together during a storage space recovery operation. A storage space recovery module uses the reverse map to identify valid data in an erase region prior to an operation to recover the erase region.
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申请公布号 |
US8195912(B2) |
申请公布日期 |
2012.06.05 |
申请号 |
US20080098434 |
申请日期 |
2008.04.06 |
申请人 |
FLYNN DAVID;ZAPPE MICHAEL;STRASSER JOHN;ATKISSON DAVID;THATCHER JONATHAN;FUSION-IO, INC |
发明人 |
FLYNN DAVID;ZAPPE MICHAEL;STRASSER JOHN;ATKISSON DAVID;THATCHER JONATHAN |
分类号 |
G06F12/00;G06F13/00;G06F13/28 |
主分类号 |
G06F12/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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