BUFFER CACHE APPARATUS, JOURNALING FILE SYSTEM AND JOURNALING METHOD FOR INCORPORATING JOURNALING FEATURES WITHIN NON-VOLATILE BUFFER CACHE

摘要

Disclosed herein are a buffer cache apparatus, a journaling file system, and a journaling method capable of incorporating journaling features based on nonvolatile memory. The buffer cache apparatus provides a data buffering function between a central processing unit (CPU) and storage. The buffer cache apparatus includes a plurality of cache blocks and a journal management unit. The plurality of cache blocks are configured as volatile or nonvolatile memory devices. The journal management unit maintains states of freezing for write-protecting dirty up-to-date cache blocks among the plurality of cache blocks.

主权项

1. A buffer cache apparatus for providing a data buffering function between a central processing unit (CPU) and a storage, comprising:
a plurality of cache blocks configured as volatile or nonvolatile memory devices; and a journal management unit configured to maintain states of freezing for write-protecting dirty up-to-date cache blocks among the plurality of cache blocks.