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-rw-r--r--drivers/md/Kconfig11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index f2ccbc3b9fe..9a06fe88376 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -176,8 +176,12 @@ config MD_FAULTY
source "drivers/md/bcache/Kconfig"
+config BLK_DEV_DM_BUILTIN
+ boolean
+
config BLK_DEV_DM
tristate "Device mapper support"
+ select BLK_DEV_DM_BUILTIN
---help---
Device-mapper is a low level volume manager. It works by allowing
people to specify mappings for ranges of logical sectors. Various
@@ -238,6 +242,7 @@ config DM_CRYPT
config DM_SNAPSHOT
tristate "Snapshot target"
depends on BLK_DEV_DM
+ select DM_BUFIO
---help---
Allow volume managers to take writable snapshots of a device.
@@ -250,12 +255,12 @@ config DM_THIN_PROVISIONING
Provides thin provisioning and snapshots that share a data store.
config DM_DEBUG_BLOCK_STACK_TRACING
- boolean "Keep stack trace of thin provisioning block lock holders"
- depends on STACKTRACE_SUPPORT && DM_THIN_PROVISIONING
+ boolean "Keep stack trace of persistent data block lock holders"
+ depends on STACKTRACE_SUPPORT && DM_PERSISTENT_DATA
select STACKTRACE
---help---
Enable this for messages that may help debug problems with the
- block manager locking used by thin provisioning.
+ block manager locking used by thin provisioning and caching.
If unsure, say N.