METHOD AND APPARATUS FOR CONTROLLING WRITING DATA IN STORAGE UNIT BASED ON NAND FLASH MEMORY

摘要

A method and apparatus for controlling writing of data in a storage unit based on a NAND flash memory are provided. The method includes determining reference values for classifying dirty pages to be written in the storage unit into a plurality of groups; calculating, with respect to each of the dirty pages, a hotness indicating a possibility of a change of data; classifying the dirty pages into the groups corresponding to reference values most similar to the calculated hotness; determining whether sizes of the groups are greater than a size of a segment, where the segment is a unit for performing a write request in the storage unit; and requesting a write operation for each segment with respect to groups having a size at least equal to the size of the segment to the storage unit.