PURPOSE: A pre-fetch and swap-in method for considering a flash memory delete block is provided to reduce deleting operation times of the flash memory by performing the pre-fetch of the computer system which uses the flash memory as the swap space in the one delete block. CONSTITUTION: The computer system uses the flash memory as the swap storage. When several pages are simultaneously pre-fetched and swapped-in according to the one swap-in request, the pages in the delete block(101,102) including the swap-in requesting page(110) is pre-fetched. The computer system uses the Linux as the operating system.
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