-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;
-
- 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);
- rc = -ENOENT;
- goto not_exist;
- }
-
- 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;
- }
-
- CDEBUG(D_INFO, "Unregistering policy %s from NRS core.\n",
- conf->nc_name);
-
- list_del(&desc->pd_list);
- OBD_FREE_PTR(desc);
-
-fail:
- mutex_unlock(&ptlrpc_all_services_mutex);
-
-not_exist:
- mutex_unlock(&nrs_core.nrs_mutex);
-
- return rc;
-}
-EXPORT_SYMBOL(ptlrpc_nrs_policy_unregister);