Mount-time unmapping of unused logical addresses in non-volatile memory systems

摘要

Systems and methods are provided for unmapping unused logical addresses at mount-time of a file system. An electronic device (100), which includes a non-volatile memory (120) ("NVM"), may implement a file system (210) that, at mount-time of the NVM (120), identifies all of the logical addresses associated with the NVM (120) that are unallocated. The file system (210) may then pass this information on to a NVM manager (220), such as in one or more unmap requests. This can ensure that the NVM manager (220) does not maintain data associated with a logical address that is no longer needed by the file system (210).