#define ldlm_set_destroyed(_l) LDLM_SET_FLAG(( _l), 1ULL << 50)
#define ldlm_clear_destroyed(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 50)
-/** flag whether this is a server namespace lock */
-#define LDLM_FL_SERVER_LOCK 0x0008000000000000ULL // bit 51
-#define ldlm_is_server_lock(_l) LDLM_TEST_FLAG(( _l), 1ULL << 51)
-#define ldlm_set_server_lock(_l) LDLM_SET_FLAG(( _l), 1ULL << 51)
-#define ldlm_clear_server_lock(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 51)
-
/**
* It's set in lock_res_and_lock() and unset in unlock_res_and_lock().
*