--- block/Makefile

+++ block/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_IOSCHED_NOOP) += noop-iosch

obj-$(CONFIG_IOSCHED_AS) += as-iosched.o

obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o

obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o

+obj-$(CONFIG_IOSCHED_BFQ) += bfq-iosched.o

obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o

obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o