| config DM_PERSISTENT_DATA |
| tristate |
| depends on BLK_DEV_DM |
| select LIBCRC32C |
| select DM_BUFIO |
| ---help--- |
| Library providing immutable on-disk data structure support for |
| device-mapper targets such as the thin provisioning target. |
| |
| config DM_DEBUG_BLOCK_STACK_TRACING |
| bool "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 and caching. |
| |
| If unsure, say N. |