/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2005 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * 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.
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source 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.
+ * 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).
*
- * In either case, 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
- * license text for more details.
+ * 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 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LOG
#include "llog_internal.h"
/* helper functions for calling the llog obd methods */
+static struct llog_ctxt* llog_new_ctxt(struct obd_device *obd)
+{
+ struct llog_ctxt *ctxt;
-int llog_cleanup(struct llog_ctxt *ctxt)
+ OBD_ALLOC_PTR(ctxt);
+ if (!ctxt)
+ return NULL;
+
+ ctxt->loc_obd = obd;
+ atomic_set(&ctxt->loc_refcount, 1);
+
+ return ctxt;
+}
+
+static void llog_ctxt_destroy(struct llog_ctxt *ctxt)
{
+ if (ctxt->loc_exp)
+ class_export_put(ctxt->loc_exp);
+ if (ctxt->loc_imp) {
+ class_import_put(ctxt->loc_imp);
+ ctxt->loc_imp = NULL;
+ }
+
+ OBD_FREE_PTR(ctxt);
+ return;
+}
+
+int __llog_ctxt_put(struct llog_ctxt *ctxt)
+{
+ struct obd_llog_group *olg = ctxt->loc_olg;
+ struct obd_device *obd;
int rc = 0;
+
+ spin_lock(&olg->olg_lock);
+ if (!atomic_dec_and_test(&ctxt->loc_refcount)) {
+ spin_unlock(&olg->olg_lock);
+ return rc;
+ }
+ olg->olg_ctxts[ctxt->loc_idx] = NULL;
+ spin_unlock(&olg->olg_lock);
+
+ obd = ctxt->loc_obd;
+ spin_lock(&obd->obd_dev_lock);
+ spin_unlock(&obd->obd_dev_lock); /* sync with llog ctxt user thread */
+ LASSERT(obd->obd_stopping == 1 || obd->obd_set_up == 0);
+ /* cleanup the llog ctxt here */
+ if (CTXTP(ctxt, cleanup))
+ rc = CTXTP(ctxt, cleanup)(ctxt);
+
+ llog_ctxt_destroy(ctxt);
+ wake_up(&olg->olg_waitq);
+ return rc;
+}
+EXPORT_SYMBOL(__llog_ctxt_put);
+
+int llog_cleanup(struct llog_ctxt *ctxt)
+{
+ struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
+ struct obd_llog_group *olg;
+ int rc, idx;
ENTRY;
if (!ctxt) {
CERROR("No ctxt\n");
RETURN(-ENODEV);
}
-
- if (CTXTP(ctxt, cleanup))
- rc = CTXTP(ctxt, cleanup)(ctxt);
- ctxt->loc_obd->obd_llog_ctxt[ctxt->loc_idx] = NULL;
- if (ctxt->loc_exp)
- class_export_put(ctxt->loc_exp);
- OBD_FREE(ctxt, sizeof(*ctxt));
+ olg = ctxt->loc_olg;
+ idx = ctxt->loc_idx;
+
+ /* banlance the ctxt get when calling llog_cleanup */
+ LASSERT(atomic_read(&ctxt->loc_refcount) > 1);
+ llog_ctxt_put(ctxt);
+
+ /* try to free the ctxt */
+ rc = __llog_ctxt_put(ctxt);
+ if (rc)
+ CERROR("Error %d while cleaning up ctxt %p\n",
+ rc, ctxt);
+
+ l_wait_event(olg->olg_waitq,
+ llog_group_ctxt_null(olg, idx), &lwi);
RETURN(rc);
}
EXPORT_SYMBOL(llog_cleanup);
-int llog_setup(struct obd_device *obd, struct obd_llogs *llogs, int index,
+int llog_setup(struct obd_device *obd, struct obd_llog_group *olg, int index,
struct obd_device *disk_obd, int count, struct llog_logid *logid,
struct llog_operations *op)
{
if (index < 0 || index >= LLOG_MAX_CTXTS)
RETURN(-EFAULT);
- /* in some recovery cases, obd_llog_ctxt might already be set,
+ LASSERT(olg != NULL);
+ ctxt = llog_group_get_ctxt(olg, index);
+
+ /* in some recovery cases, obd_llog_ctxt might already be set,
* but llogs might still be zero, for example in obd_filter recovery */
- if (obd->obd_llog_ctxt[index] &&
- (!llogs || (llogs && llogs->llog_ctxt[index]))) {
+ if (ctxt) {
/* mds_lov_update_mds might call here multiple times. So if the
llog is already set up then don't to do it again. */
- CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
+ CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
obd->obd_name, index);
- ctxt = obd->obd_llog_ctxt[index];
+ LASSERT(ctxt->loc_olg == olg);
LASSERT(ctxt->loc_obd == obd);
LASSERT(ctxt->loc_exp == disk_obd->obd_self_export);
LASSERT(ctxt->loc_logops == op);
+ llog_ctxt_put(ctxt);
GOTO(out, rc = 0);
}
-
- OBD_ALLOC(ctxt, sizeof(*ctxt));
+ ctxt = llog_new_ctxt(obd);
if (!ctxt)
GOTO(out, rc = -ENOMEM);
- if (llogs)
- llogs->llog_ctxt[index] = ctxt;
-
- if (!obd->obd_llog_ctxt[index])
- obd->obd_llog_ctxt[index] = ctxt;
-
+ rc = llog_group_set_ctxt(olg, ctxt, index);
+ if (rc) {
+ llog_ctxt_destroy(ctxt);
+ if (rc == -EEXIST)
+ rc = 0;
+ GOTO(out, rc);
+ }
ctxt->loc_obd = obd;
ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
+ ctxt->loc_olg = olg;
ctxt->loc_idx = index;
ctxt->loc_logops = op;
sema_init(&ctxt->loc_sem, 1);
if (op->lop_setup)
- rc = op->lop_setup(obd, llogs, index, disk_obd, count, logid);
+ rc = op->lop_setup(obd, olg, index, disk_obd, count, logid);
if (rc) {
- obd->obd_llog_ctxt[index] = NULL;
- class_export_put(ctxt->loc_exp);
- OBD_FREE(ctxt, sizeof(*ctxt));
+ llog_ctxt_destroy(ctxt);
}
-
out:
RETURN(rc);
}
/* lop_setup method for filter/osc */
// XXX how to set exports
-int llog_obd_origin_setup(struct obd_device *obd, struct obd_llogs *llogs,
+int llog_obd_origin_setup(struct obd_device *obd, struct obd_llog_group *olg,
int index, struct obd_device *disk_obd, int count,
struct llog_logid *logid)
{
LASSERT(count == 1);
- if (!llogs)
- ctxt = llog_get_context(obd, index);
- else
- ctxt = llog_get_context_from_llogs(llogs, index);
-
+ LASSERT(olg != NULL);
+ ctxt = llog_group_get_ctxt(olg, index);
+
LASSERT(ctxt);
llog_gen_init(ctxt);
rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
if (rc)
CERROR("llog_process with cat_cancel_cb failed: %d\n", rc);
- out:
+out:
+ llog_ctxt_put(ctxt);
RETURN(rc);
}
EXPORT_SYMBOL(llog_obd_origin_setup);
llog_cat_set_first_idx(cathandle, index);
rc = llog_cancel_rec(cathandle, index);
if (rc == 0)
- CDEBUG(D_HA, "cancel plain log at index"
- " %u of catalog "LPX64"\n",
+ CDEBUG(D_RPCTRACE, "cancel plain log at"
+ "index %u of catalog "LPX64"\n",
index,cathandle->lgh_id.lgl_oid);
}
}
}
EXPORT_SYMBOL(llog_obd_origin_add);
-int llog_cat_initialize(struct obd_device *obd, struct obd_llogs *llogs,
+int llog_cat_initialize(struct obd_device *obd, struct obd_llog_group *olg,
int count, struct obd_uuid *uuid)
{
char name[32] = CATLIST;
GOTO(out, rc);
}
- rc = obd_llog_init(obd, llogs, obd, count, idarray, uuid);
+ rc = obd_llog_init(obd, olg, obd, count, idarray, uuid);
if (rc) {
CERROR("rc: %d\n", rc);
GOTO(out, rc);
}
EXPORT_SYMBOL(llog_cat_initialize);
-int obd_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
- struct obd_device *disk_obd, int count,
+int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
+ struct obd_device *disk_obd, int count,
struct llog_catid *logid, struct obd_uuid *uuid)
{
int rc;
OBD_CHECK_DT_OP(obd, llog_init, 0);
OBD_COUNTER_INCREMENT(obd, llog_init);
- rc = OBP(obd, llog_init)(obd, llogs, disk_obd, count, logid,
- uuid);
+ rc = OBP(obd, llog_init)(obd, olg, disk_obd, count, logid, uuid);
RETURN(rc);
}
EXPORT_SYMBOL(obd_llog_init);
RETURN(rc);
}
EXPORT_SYMBOL(obd_llog_finish);
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff