[SAFS]: define buffer size without PAGE_SIZE in SAFS-util.
[SAFS]: define buffer size without PAGE_SIZE in SAFS-util.

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