dm cache: add mq policy
A cache policy that uses a multiqueue ordered by recent hit
count to select which blocks should be promoted and demoted.
This is meant to be a general purpose policy. It prioritises
reads over writes.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index 24b5256..adc8710 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -12,6 +12,7 @@
+= dm-log-userspace-base.o dm-log-userspace-transfer.o
dm-thin-pool-y += dm-thin.o dm-thin-metadata.o
dm-cache-y += dm-cache-target.o dm-cache-metadata.o dm-cache-policy.o
+dm-cache-mq-y += dm-cache-policy-mq.o
md-mod-y += md.o bitmap.o
raid456-y += raid5.o
@@ -46,6 +47,7 @@
obj-$(CONFIG_DM_THIN_PROVISIONING) += dm-thin-pool.o
obj-$(CONFIG_DM_VERITY) += dm-verity.o
obj-$(CONFIG_DM_CACHE) += dm-cache.o
+obj-$(CONFIG_DM_CACHE_MQ) += dm-cache-mq.o
ifeq ($(CONFIG_DM_UEVENT),y)
dm-mod-objs += dm-uevent.o