dm-vdo targets are not supported for 32-bit configurations. A vdo target typically requires 1 to 1.5 GB of memory at any given time, which is likely a large fraction of the addressable memory of a 32-bit system. At the same time, the amount of addressable storage attached to a 32-bit system may not be large enough for deduplication to provide much benefit. Because of these concerns, 32-bit platforms are deemed unlikely to benefit from using a vdo target, so dm-vdo is targeted only at 64-bit platforms. Co-developed-by: J. corwin Coburn <corwin@xxxxxxxxxxxxxx> Signed-off-by: J. corwin Coburn <corwin@xxxxxxxxxxxxxx> Co-developed-by: John Wiele <jwiele@xxxxxxxxxx> Signed-off-by: John Wiele <jwiele@xxxxxxxxxx> Signed-off-by: Matthew Sakai <msakai@xxxxxxxxxx> --- drivers/md/Kconfig | 16 ++++++++++++++++ drivers/md/Makefile | 2 ++ 2 files changed, 18 insertions(+) diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 2a8b081bce7d..9c4039106384 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -532,6 +532,22 @@ config DM_FLAKEY help A target that intermittently fails I/O for debugging purposes. +config DM_VDO + tristate "VDO: deduplication and compression target" + depends on 64BIT + depends on BLK_DEV_DM + select DM_BUFIO + select LZ4_COMPRESS + select LZ4_DECOMPRESS + help + This device mapper target presents a block device with + deduplication, compression and thin-provisioning. + + To compile this code as a module, choose M here: the module will + be called dm-vdo. + + If unsure, say N. + config DM_VERITY tristate "Verity target support" depends on BLK_DEV_DM diff --git a/drivers/md/Makefile b/drivers/md/Makefile index 84291e38dca8..47444b393abb 100644 --- a/drivers/md/Makefile +++ b/drivers/md/Makefile @@ -25,6 +25,7 @@ dm-ebs-y += dm-ebs-target.o dm-era-y += dm-era-target.o dm-clone-y += dm-clone-target.o dm-clone-metadata.o dm-verity-y += dm-verity-target.o +dm-vdo-y += dm-vdo-target.o $(patsubst drivers/md/dm-vdo/%.c,dm-vdo/%.o,$(wildcard $(src)/dm-vdo/*.c)) dm-zoned-y += dm-zoned-target.o dm-zoned-metadata.o dm-zoned-reclaim.o md-mod-y += md.o md-bitmap.o @@ -74,6 +75,7 @@ obj-$(CONFIG_DM_ZERO) += dm-zero.o obj-$(CONFIG_DM_RAID) += dm-raid.o obj-$(CONFIG_DM_THIN_PROVISIONING) += dm-thin-pool.o obj-$(CONFIG_DM_VERITY) += dm-verity.o +obj-$(CONFIG_DM_VDO) += dm-vdo.o obj-$(CONFIG_DM_CACHE) += dm-cache.o obj-$(CONFIG_DM_CACHE_SMQ) += dm-cache-smq.o obj-$(CONFIG_DM_EBS) += dm-ebs.o -- 2.40.0
