anchor.diff:  
         F2FS_FS             = module;
         F2FS_FS_SECURITY    = option yes;
  -      F2FS_FS_ENCRYPTION  = option yes;
  +      F2FS_FS_ENCRYPTION  = whenOlder "5.1" yes;
         F2FS_FS_COMPRESSION = whenAtLeast "5.6" yes;
         UDF_FS              = module;
   
  
positive.code:       LOCK_TORTURE_TEST        = option no;
        MTD_TESTS                = option no;
        NOTIFIER_ERROR_INJECTION = option no;
        RCU_PERF_TEST            = option no;
        RCU_TORTURE_TEST         = option no;
        TEST_ASYNC_DRIVER_PROBE  = option no;
        WW_MUTEX_SELFTEST        = option no;
  
negative.code:       DEBUG_DEVRES              = no;
        DYNAMIC_DEBUG             = yes;
        DEBUG_STACK_USAGE         = no;
        RCU_TORTURE_TEST          = no;
        SCHEDSTATS                = no;
        DETECT_HUNG_TASK          = yes;
  