| 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. |