drivers/md/persistent-data/Kconfig

   1 config DM_PERSISTENT_DATA
   2        tristate
   3        depends on BLK_DEV_DM
   4        select LIBCRC32C
   5        select DM_BUFIO
   6        ---help---
   7          Library providing immutable on-disk data structure support for
   8          device-mapper targets such as the thin provisioning target.
   9
  10 config DM_DEBUG_BLOCK_STACK_TRACING
  11        boolean "Keep stack trace of persistent data block lock holders"
  12        depends on STACKTRACE_SUPPORT && DM_PERSISTENT_DATA
  13        select STACKTRACE
  14        ---help---
  15          Enable this for messages that may help debug problems with the
  16          block manager locking used by thin provisioning and caching.
  17
  18          If unsure, say N.