Add mdc_llog_setup and mdc_llog_cleanup methods.

diff --git a/lustre/mdc/mdc_log.c b/lustre/mdc/mdc_log.c
new file mode 100644 (file)
index 0000000..b9f07ae
--- /dev/null
+++ b/lustre/mdc/mdc_log.c
@@ -0,0 +1,82 @@
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ *  lustre/mdc/mdc_log.c
+ *
+ *  Copyright (c) 2001-2003 Cluster File Systems, Inc.
+
+ *   Lustre is free software; you can redistribute it and/or
+ *   modify it under the terms of version 2 of the GNU General Public
+ *   License as published by the Free Software Foundation.
+ *
+ *   Lustre 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 for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Lustre; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define DEBUG_SUBSYSTEM S_MDC
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/version.h>
+
+#include <portals/list.h>
+#include <linux/obd_class.h>
+#include <linux/lustre_fsfilt.h>
+#include <linux/lustre_commit_confd.h>
+
+#include "mdc_internal.h"
+
+static int mdc_llog_cleanup(struct llog_obd_ctxt *ctxt, int ctxt_idx)
+{
+        struct obd_device *obd = ctxt->loc_obd;
+        int rc = 0;
+        ENTRY;
+
+        LASSERT(obd->obd_llog_ctxt[ctxt_idx]); 
+        class_unlink_export(ctxt->loc_exp);
+        class_export_put(ctxt->loc_exp);
+
+        obd->obd_llog_ctxt[ctxt_idx] = NULL;
+        OBD_FREE(ctxt, sizeof(*ctxt));
+        RETURN(rc);
+}
+
+struct llog_operations mdc_llog_ops;
+int mdc_llog_setup(struct obd_device *obd, int ctxt_idx, 
+                   struct obd_device *disk_obd, struct obd_uuid uuid,
+                   struct llog_logid *logid)
+{
+        struct llog_obd_ctxt *ctxt;
+        int rc = 0;
+        ENTRY;
+
+        if (obd->obd_llog_ctxt[ctxt_idx]) {
+                CERROR("obd_llog_ctxt %d already allocated\n", ctxt_idx);
+                LBUG();
+        }
+
+        OBD_ALLOC(ctxt, sizeof(*ctxt));
+        if (!ctxt)
+                RETURN(-ENOMEM);
+        obd->obd_llog_ctxt[ctxt_idx] = ctxt;
+        sema_init(&ctxt->loc_sem, 1);
+        ctxt->loc_idx = ctxt_idx;
+        ctxt->loc_obd = obd;
+
+        ctxt->loc_exp = class_new_export(disk_obd);
+
+        mdc_llog_ops = llog_lvfs_ops;
+        mdc_llog_ops.lop_setup = mdc_llog_setup;
+        mdc_llog_ops.lop_cleanup = mdc_llog_cleanup;
+        mdc_llog_ops.lop_add = NULL;
+        mdc_llog_ops.lop_cancel = NULL;
+
+        ctxt->loc_logops = &mdc_llog_ops;
+        RETURN(rc);
+}