---
drivers/md/Kconfig | 8 ++++++++
drivers/md/Makefile | 3 ++-
drivers/md/persistent-data/Kconfig | 1 +
3 files changed, 11 insertions(+), 1 deletion(-)
Index: linux-3.1-rc9/drivers/md/Kconfig
===================================================================
--- linux-3.1-rc9.orig/drivers/md/Kconfig
+++ linux-3.1-rc9/drivers/md/Kconfig
@@ -208,6 +208,14 @@ config DM_DEBUG
If unsure, say N.
+config DM_BUFIO
+ tristate
+ depends on BLK_DEV_DM && EXPERIMENTAL
+ ---help---
+ This interface allows you to do buffered I/O on a device and acts
+ as a cache, holding recently-read blocks in memory and performing
+ delayed writes.
+
source "drivers/md/persistent-data/Kconfig"
config DM_CRYPT
Index: linux-3.1-rc9/drivers/md/Makefile
===================================================================
--- linux-3.1-rc9.orig/drivers/md/Makefile
+++ linux-3.1-rc9/drivers/md/Makefile
@@ -3,7 +3,7 @@
#
dm-mod-y += dm.o dm-table.o dm-target.o dm-linear.o dm-stripe.o \
- dm-ioctl.o dm-io.o dm-kcopyd.o dm-sysfs.o dm-bufio.o
+ dm-ioctl.o dm-io.o dm-kcopyd.o dm-sysfs.o
dm-multipath-y += dm-path-selector.o dm-mpath.o
dm-snapshot-y += dm-snap.o dm-exception-store.o dm-snap-transient.o \
dm-snap-persistent.o
@@ -28,6 +28,7 @@ obj-$(CONFIG_MD_MULTIPATH) += multipath.
obj-$(CONFIG_MD_FAULTY) += faulty.o
obj-$(CONFIG_BLK_DEV_MD) += md-mod.o
obj-$(CONFIG_BLK_DEV_DM) += dm-mod.o
+obj-$(CONFIG_DM_BUFIO) += dm-bufio.o
obj-$(CONFIG_DM_CRYPT) += dm-crypt.o
obj-$(CONFIG_DM_DELAY) += dm-delay.o
obj-$(CONFIG_DM_FLAKEY) += dm-flakey.o
Index: linux-3.1-rc9/drivers/md/persistent-data/Kconfig
===================================================================
--- linux-3.1-rc9.orig/drivers/md/persistent-data/Kconfig
+++ linux-3.1-rc9/drivers/md/persistent-data/Kconfig
@@ -2,6 +2,7 @@ config DM_PERSISTENT_DATA
tristate
depends on BLK_DEV_DM && EXPERIMENTAL
select LIBCRC32C
+ select DM_BUFIO
---help---
Library providing immutable on-disk data structure support for
device-mapper targets such as the thin provisioning target.