staging: lustre: mgc: remove unused file

This file contains unresolved references and is not mentioned in the
Makefile.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/mgc/libmgc.c

-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/mgc/libmgc.c
- *
- * Lustre Management Client
- * Author: Nathan Rutman <nathan@clusterfs.com>
- */
-
-/* Minimal MGC for liblustre: only used to read the config log from the MGS
-   at setup time, no updates. */
-
-#define DEBUG_SUBSYSTEM S_MGC
-
-#include "../include/liblustre.h"
-
-#include "../include/obd_class.h"
-#include "../include/lustre_dlm.h"
-#include "../include/lustre_log.h"
-#include "../include/lustre_fsfilt.h"
-#include "../include/lustre_disk.h"
-
-
-static int mgc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
-{
-	int rc;
-
-	ptlrpcd_addref();
-
-	rc = client_obd_setup(obd, lcfg);
-	if (rc)
-		GOTO(err_decref, rc);
-
-	/* liblustre only support null flavor to MGS */
-	obd->u.cli.cl_flvr_mgc.sf_rpc = SPTLRPC_FLVR_NULL;
-
-	rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
-	if (rc) {
-		CERROR("failed to setup llogging subsystems\n");
-		GOTO(err_cleanup, rc);
-	}
-
-	return rc;
-
-err_cleanup:
-	client_obd_cleanup(obd);
-err_decref:
-	ptlrpcd_decref();
-	return rc;
-}
-
-static int mgc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
-{
-	int rc = 0;
-
-	switch (stage) {
-	case OBD_CLEANUP_EARLY:
-	case OBD_CLEANUP_EXPORTS:
-		obd_cleanup_client_import(obd);
-		rc = obd_llog_finish(obd, 0);
-		if (rc != 0)
-			CERROR("failed to cleanup llogging subsystems\n");
-		break;
-	}
-	return rc;
-}
-
-static int mgc_cleanup(struct obd_device *obd)
-{
-	int rc;
-
-	ptlrpcd_decref();
-
-	rc = client_obd_cleanup(obd);
-	return rc;
-}
-
-static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
-			 struct obd_device *tgt, int *index)
-{
-	struct llog_ctxt *ctxt;
-	int rc;
-
-	LASSERT(olg == &obd->obd_olg);
-	rc = llog_setup(NULL, obd, olg, LLOG_CONFIG_REPL_CTXT, tgt,
-			&llog_client_ops);
-	if (rc < 0)
-		return rc;
-
-	ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_REPL_CTXT);
-	llog_initiator_connect(ctxt);
-	llog_ctxt_put(ctxt);
-
-	return rc;
-}
-
-static int mgc_llog_finish(struct obd_device *obd, int count)
-{
-	struct llog_ctxt *ctxt;
-
-
-	ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
-	if (ctxt)
-		llog_cleanup(NULL, ctxt);
-
-	return 0;
-}
-
-struct obd_ops mgc_obd_ops = {
-	.o_owner	= THIS_MODULE,
-	.o_setup	= mgc_setup,
-	.o_precleanup   = mgc_precleanup,
-	.o_cleanup      = mgc_cleanup,
-	.o_add_conn     = client_import_add_conn,
-	.o_del_conn     = client_import_del_conn,
-	.o_connect      = client_connect_import,
-	.o_disconnect   = client_disconnect_export,
-	.o_llog_init    = mgc_llog_init,
-	.o_llog_finish  = mgc_llog_finish,
-};
-
-int __init mgc_init(void)
-{
-	return class_register_type(&mgc_obd_ops, NULL,
-				   NULL, LUSTRE_MGC_NAME, NULL);
-}