公开(公告)号：US20140115242A1

公开(公告)日：2014-04-24

申请号：US14143991

申请日：2013-12-30

Applicant: Apple Inc.

Inventor： Daniel J. Post ,  Nir J. Wakrat

IPC: G06F12/02

CPC classification number: G06F12/0246

Abstract: This can relate to handling a non-volatile memory (“NVM”) operating at a substantially full memory. The non-volatile memory can report its physical capacity to an NVM driver. The NVM driver can scale-up the physical capacity a particular number of times to generate a “scaled physical capacity,” which is then reported to the file system. Because the scaled physical capacity is greater than the NVM's actual physical capacity, the file system allocates a logical space to the NVM that is substantially greater than the NVM's capacity. This can cause less crowding of the logical block addresses within the logical space, thus making it easier for the file system to operate and improving system performance. A commitment budget can also be reported to the file system that corresponds to the NVM's physical capacity, and which can define the amount of data the file system can commit for storage in the NVM.

Abstract translation: 这可以涉及处理在基本上完整的存储器上操作的非易失性存储器（“NVM”）。 非易失性存储器可以向NVM驱动程序报告其物理容量。 NVM驱动程序可以将物理容量放大特定次数，以生成“缩放的物理容量”，然后将其报告给文件系统。 由于缩放的物理容量大于NVM的实际物理容量，所以文件系统为NVM分配了大大超过NVM容量的逻辑空间。 这可能导致逻辑空间内的逻辑块地址拥挤较少，从而使得文件系统更容易操作并提高系统性能。 承诺预算也可以报告给对应于NVM物理容量的文件系统，并且可以定义文件系统可以在NVM中进行存储的数据量。