-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#ifdef __KERNEL__
#include <libcfs/libcfs.h>
-#else
-#include <liblustre.h>
-#endif
-
#include <obd_class.h>
#include <lustre_log.h>
-#include <libcfs/list.h>
-#include <lvfs.h>
-#include <lustre_fsfilt.h>
-
-#ifdef __KERNEL__
-int llog_origin_connect(struct llog_ctxt *ctxt,
- struct llog_logid *logid, struct llog_gen *gen,
- struct obd_uuid *uuid)
-{
- struct llog_gen_rec *lgr;
- struct ptlrpc_request *req;
- struct llogd_conn_body *req_body;
- struct inode* inode = ctxt->loc_handle->lgh_file->f_dentry->d_inode;
- void *handle;
- int rc, rc1;
-
- ENTRY;
-
- if (list_empty(&ctxt->loc_handle->u.chd.chd_head)) {
- CDEBUG(D_HA, "there is no record related to ctxt %p\n", ctxt);
- RETURN(0);
- }
-
- /* FIXME what value for gen->conn_cnt */
- LLOG_GEN_INC(ctxt->loc_gen);
-
- /* first add llog_gen_rec */
- OBD_ALLOC_PTR(lgr);
- if (!lgr)
- RETURN(-ENOMEM);
- lgr->lgr_hdr.lrh_len = lgr->lgr_tail.lrt_len = sizeof(*lgr);
- lgr->lgr_hdr.lrh_type = LLOG_GEN_REC;
-
- handle = fsfilt_start_log(ctxt->loc_exp->exp_obd, inode,
- FSFILT_OP_CANCEL_UNLINK, NULL, 1);
- if (IS_ERR(handle)) {
- CERROR("fsfilt_start failed: %ld\n", PTR_ERR(handle));
- OBD_FREE(lgr, sizeof(*lgr));
- rc = PTR_ERR(handle);
- RETURN(rc);
- }
-
- lgr->lgr_gen = ctxt->loc_gen;
- rc = llog_add(ctxt, &lgr->lgr_hdr, NULL, NULL, 1);
- OBD_FREE_PTR(lgr);
- rc1 = fsfilt_commit(ctxt->loc_exp->exp_obd, inode, handle, 0);
- if (rc != 1 || rc1 != 0) {
- rc = (rc != 1) ? rc : rc1;
- RETURN(rc);
- }
-
- LASSERT(ctxt->loc_imp);
- req = ptlrpc_request_alloc_pack(ctxt->loc_imp, &RQF_LLOG_ORIGIN_CONNECT,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_CONNECT);
- if (req == NULL)
- RETURN(-ENOMEM);
-
- req_body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_CONN_BODY);
- req_body->lgdc_gen = ctxt->loc_gen;
- req_body->lgdc_logid = ctxt->loc_handle->lgh_id;
- req_body->lgdc_ctxt_idx = ctxt->loc_idx + 1;
- ptlrpc_request_set_replen(req);
-
- req->rq_no_resend = req->rq_no_delay = 1;
- rc = ptlrpc_queue_wait(req);
- ptlrpc_req_finished(req);
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_origin_connect);
-
-int llog_handle_connect(struct ptlrpc_request *req)
-{
- struct obd_device *obd = req->rq_export->exp_obd;
- struct llogd_conn_body *req_body;
- struct llog_ctxt *ctxt;
- int rc;
- ENTRY;
-
- req_body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_CONN_BODY);
-
- ctxt = llog_get_context(obd, req_body->lgdc_ctxt_idx);
- rc = llog_connect(ctxt, &req_body->lgdc_logid,
- &req_body->lgdc_gen, NULL);
-
- llog_ctxt_put(ctxt);
- if (rc != 0)
- CERROR("failed at llog_relp_connect\n");
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_handle_connect);
-
-int llog_receptor_accept(struct llog_ctxt *ctxt, struct obd_import *imp)
-{
- ENTRY;
-
- LASSERT(ctxt);
- mutex_down(&ctxt->loc_sem);
- if (ctxt->loc_imp != imp) {
- if (ctxt->loc_imp) {
- CWARN("changing the import %p - %p\n",
- ctxt->loc_imp, imp);
- class_import_put(ctxt->loc_imp);
- }
- ctxt->loc_imp = class_import_get(imp);
- }
- mutex_up(&ctxt->loc_sem);
- RETURN(0);
-}
-EXPORT_SYMBOL(llog_receptor_accept);
-
-#else /* !__KERNEL__ */
-
-int llog_origin_connect(struct llog_ctxt *ctxt,
- struct llog_logid *logid, struct llog_gen *gen,
- struct obd_uuid *uuid)
-{
- return 0;
-}
-#endif
int llog_initiator_connect(struct llog_ctxt *ctxt)
{
- struct obd_import *new_imp;
- ENTRY;
-
- LASSERT(ctxt);
- new_imp = ctxt->loc_obd->u.cli.cl_import;
- LASSERTF(ctxt->loc_imp == NULL || ctxt->loc_imp == new_imp,
- "%p - %p\n", ctxt->loc_imp, new_imp);
- mutex_down(&ctxt->loc_sem);
- if (ctxt->loc_imp != new_imp) {
- if (ctxt->loc_imp)
- class_import_put(ctxt->loc_imp);
- ctxt->loc_imp = class_import_get(new_imp);
- }
- mutex_up(&ctxt->loc_sem);
- RETURN(0);
+ struct obd_import *new_imp;
+
+ ENTRY;
+
+ LASSERT(ctxt);
+ new_imp = ctxt->loc_obd->u.cli.cl_import;
+ LASSERTF(!ctxt->loc_imp || ctxt->loc_imp == new_imp,
+ "%p - %p\n", ctxt->loc_imp, new_imp);
+ mutex_lock(&ctxt->loc_mutex);
+ if (ctxt->loc_imp != new_imp) {
+ if (ctxt->loc_imp)
+ class_import_put(ctxt->loc_imp);
+ ctxt->loc_imp = class_import_get(new_imp);
+ }
+ mutex_unlock(&ctxt->loc_mutex);
+ RETURN(0);
}
EXPORT_SYMBOL(llog_initiator_connect);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff