On Wed, 2017-04-12 at 08:01 +0200, Paolo Valente wrote: > Where is my mistake? I think in the Makefile. How about the patch below? Please note that I'm no Kbuild expert. diff --git a/block/Makefile b/block/Makefile index 546066ee7fa6..b3711af6b637 100644 --- a/block/Makefile +++ b/block/Makefile @@ -20,7 +20,8 @@ obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o obj-$(CONFIG_MQ_IOSCHED_DEADLINE) += mq-deadline.o -obj-$(CONFIG_IOSCHED_BFQ) += bfq-iosched.o bfq-wf2q.o bfq-cgroup.o +bfq-y := bfq-iosched.o bfq-wf2q.o bfq-cgroup.o +obj-$(CONFIG_IOSCHED_BFQ) += bfq.o obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o
