- cfs_list_add_tail(&desc->pd_list, &nrs_core.nrs_policies);
-fail:
- mutex_unlock(&nrs_core.nrs_mutex);
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(ptlrpc_nrs_policy_register);
-
-/**
- * Unregisters a previously registered policy with NRS core. All instances of
- * the policy on all NRS heads of all supported services are removed.
- *
- * N.B. This function should only be called from a module's exit() function.
- * Although it can be used for policies that ship alongside NRS core, the
- * function is primarily intended for policies that register externally,
- * from other modules.
- *
- * \param[in] conf configuration information for the policy to unregister
- *
- * \retval -ve error
- * \retval 0 success
- */
-int ptlrpc_nrs_policy_unregister(struct ptlrpc_nrs_pol_conf *conf)
-{
- struct ptlrpc_nrs_pol_desc *desc;
- int rc;
- ENTRY;
-
- LASSERT(conf != NULL);
-
- if (conf->nc_flags & PTLRPC_NRS_FL_FALLBACK) {
- CERROR("Unable to unregister a fallback policy, unless the "
- "PTLRPC service is stopping.\n");
- RETURN(-EPERM);
- }
-
- conf->nc_name[NRS_POL_NAME_MAX - 1] = '\0';
-
- mutex_lock(&nrs_core.nrs_mutex);
-
- desc = nrs_policy_find_desc_locked(conf->nc_name);
- if (desc == NULL) {
- CERROR("Failing to unregister NRS policy %s which has "
- "not been registered with NRS core!\n",
- conf->nc_name);
- GOTO(not_exist, rc = -ENOENT);
- }
-
- mutex_lock(&ptlrpc_all_services_mutex);
-
- rc = nrs_policy_unregister_locked(desc);
- if (rc < 0) {
- if (rc == -EBUSY)
- CERROR("Please first stop policy %s on all service "
- "partitions and then retry to unregister the "
- "policy.\n", conf->nc_name);
- GOTO(fail, rc);
- }
-
- CDEBUG(D_INFO, "Unregistering policy %s from NRS core.\n",
- conf->nc_name);
-
- cfs_list_del(&desc->pd_list);
- OBD_FREE_PTR(desc);
-