A data storage device and a method for avoiding timeout of forced garbage collection

Abstract

A data storage device and a method for avoiding timeout of forced garbage collection are provided, wherein the data storage device includes a controller and a non-volatile memory, the non-volatile memory is used to store a plurality of instructions and includes a system area, a data area and a spare area. The spare area includes a plurality of blocks, the plurality of blocks including blank blocks, host data write buffer blocks and garbage collection blocks. The controller is coupled to the non-volatile memory and is used to execute the plurality of instructions to implement a timeout avoidance of forced garbage collection. The method includes: determining that the number of the blank blocks is lower than a threshold; determining that there is no garbage collection block after a sudden power failure recovery; and marking a host data write buffer block as both a garbage collection block and a host data write buffer block.

Images