diff options
Diffstat (limited to 'drivers/md/Kconfig')
| -rw-r--r-- | drivers/md/Kconfig | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index f75a66e7d31..faa4741df6d 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -208,6 +208,16 @@ 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 tristate "Crypt target support" depends on BLK_DEV_DM @@ -233,6 +243,32 @@ config DM_SNAPSHOT ---help--- Allow volume managers to take writable snapshots of a device. +config DM_THIN_PROVISIONING + tristate "Thin provisioning target (EXPERIMENTAL)" + depends on BLK_DEV_DM && EXPERIMENTAL + select DM_PERSISTENT_DATA + ---help--- + 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 + select STACKTRACE + ---help--- + Enable this for messages that may help debug problems with the + block manager locking used by thin provisioning. + + If unsure, say N. + +config DM_DEBUG_SPACE_MAPS + boolean "Extra validation for thin provisioning space maps" + depends on DM_THIN_PROVISIONING + ---help--- + Enable this for messages that may help debug problems with the + space maps used by thin provisioning. + + If unsure, say N. + config DM_MIRROR tristate "Mirror target" depends on BLK_DEV_DM |