13241b1d3SJoe Thornberconfig DM_PERSISTENT_DATA 23241b1d3SJoe Thornber tristate 388ae4c52SKees Cook depends on BLK_DEV_DM 43241b1d3SJoe Thornber select LIBCRC32C 53241b1d3SJoe Thornber select DM_BUFIO 63241b1d3SJoe Thornber ---help--- 73241b1d3SJoe Thornber Library providing immutable on-disk data structure support for 83241b1d3SJoe Thornber device-mapper targets such as the thin provisioning target. 9*c64d240dSMike Snitzer 10*c64d240dSMike Snitzerconfig DM_DEBUG_BLOCK_STACK_TRACING 11*c64d240dSMike Snitzer boolean "Keep stack trace of persistent data block lock holders" 12*c64d240dSMike Snitzer depends on STACKTRACE_SUPPORT && DM_PERSISTENT_DATA 13*c64d240dSMike Snitzer select STACKTRACE 14*c64d240dSMike Snitzer ---help--- 15*c64d240dSMike Snitzer Enable this for messages that may help debug problems with the 16*c64d240dSMike Snitzer block manager locking used by thin provisioning and caching. 17*c64d240dSMike Snitzer 18*c64d240dSMike Snitzer If unsure, say N. 19