Fix a bug in parameters for cache_size.
Fix a bug in parameters for cache_size.

icoming/FlashX,zheng-da/FlashX,silky/FlashGraph,silky/FlashGraph,icoming/FlashGraph,icoming/FlashX,icoming/FlashGraph,flashxio/FlashX,flashxio/FlashX,zheng-da/FlashX,icoming/FlashGraph,zheng-da/FlashX,icoming/FlashX,zheng-da/FlashX,flashxio/FlashX,flashxio/FlashX,silky/FlashGraph,zheng-da/FlashX,flashxio/FlashX,silky/FlashGraph,icoming/FlashX,icoming/FlashGraph,icoming/FlashGraph,flashxio/FlashX,silky/FlashGraph,icoming/FlashX