Method and apparatus for data access of NAND FLASH file, and storage medium

A device for accessing data of a NAND FLASH file, wherein the device comprises:

• a processor, and a non-transitory computer readable storage medium connected with the processor via a bus;
• the non-transitory computer readable storage medium storing one or more computer programs executable by the processor;
• when executing the one or more computer programs, the processor performs the following steps:
• dividing a specified storage space assigned for specified NAND FLASH files into a first storage space and a second storage space, wherein the first storage space is a continuous storage space;
• storing management data of the specified NAND FLASH files in the first storage space, and storing valid data of the specified NAND FLASH files in the second storage space;
• reading the valid data of the specified NAND FLASH files stored in the second storage space according to the management data of the specified NAND FLASH files stored in the first storage space, wherein, the management data of the specified NAND FLASH files includes information used to indicate the storage location of the specified NAND FLASH files,
• wherein, the processor divides the specified storage space assigned for the specified NAND FLASH files into the first storage space and the second storage space, comprises:
• determining a total length of storage space occupied by management data of the specified NAND FLASH files;
• determining the number of pages M occupied by the management data of the specified NAND FLASH files according to the total length of the storage space;
• and
• selecting a continuous storage space of at least M pages from the specified storage space as the first storage space, wherein the continuous storage space of at least M pages refers to a storage space composed of M pages with continuous storage addresses, and taking the remaining storage space of the specified storage space as the second storage space, wherein the remaining storage space is other storage space in the specified storage space except the continuous storage space.