/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
- * Author: Peter Braam <braam@clusterfs.com>
- * Author: Phil Schwan <phil@clusterfs.com>
+ * Copyright (c) 2003 Hewlett-Packard Development Company LP.
+ * Developed under the sponsorship of the US Government under
+ * Subcontract No. B514193
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of 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.
+ * 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.
*
- * 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.
+ * 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.
*
- * 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.
+ * 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.
*/
#define DEBUG_SUBSYSTEM S_LDLM
#ifdef __KERNEL__
-#include <linux/lustre_dlm.h>
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_lib.h>
-#include <portals/list.h>
+#include <lustre_dlm.h>
+#include <obd_support.h>
+#include <obd_class.h>
+#include <lustre_lib.h>
+#include <libcfs/list.h>
#else
#include <liblustre.h>
+#include <obd_class.h>
#endif
#include "ldlm_internal.h"
#define l_flock_waitq l_lru
-static struct list_head ldlm_flock_waitq = LIST_HEAD_INIT(ldlm_flock_waitq);
+static struct list_head ldlm_flock_waitq = CFS_LIST_HEAD_INIT(ldlm_flock_waitq);
int ldlm_flock_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
void *data, int flag);
ldlm_lock_decref_internal(lock, mode);
}
- ldlm_lock_destroy(lock);
+ ldlm_lock_destroy_nolock(lock);
EXIT;
}
int
ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq,
- ldlm_error_t *err)
+ ldlm_error_t *err, struct list_head *work_list)
{
struct ldlm_resource *res = req->l_resource;
struct ldlm_namespace *ns = res->lr_namespace;
struct ldlm_lock *new = req;
struct ldlm_lock *new2 = NULL;
ldlm_mode_t mode = req->l_req_mode;
- int local = ns->ns_client;
+ int local = ns_is_client(ns);
int added = (mode == LCK_NL);
int overlaps = 0;
ENTRY;
- CDEBUG(D_DLMTRACE, "flags %#x pid "LPU64" mode %u start "LPU64" end "
- LPU64"\n", *flags, new->l_policy_data.l_flock.pid, mode,
+ CDEBUG(D_DLMTRACE, "flags %#x pid %u mode %u start "LPU64" end "LPU64
+ "\n", *flags, new->l_policy_data.l_flock.pid, mode,
req->l_policy_data.l_flock.start,
req->l_policy_data.l_flock.end);
* overflow and underflow. */
if ((new->l_policy_data.l_flock.start >
(lock->l_policy_data.l_flock.end + 1))
- && (lock->l_policy_data.l_flock.end != ~0))
+ && (lock->l_policy_data.l_flock.end !=
+ OBD_OBJECT_EOF))
continue;
if ((new->l_policy_data.l_flock.end <
/* XXX - if ldlm_lock_new() can sleep we should
* release the ns_lock, allocate the new lock,
* and restart processing this lock. */
- new2 = ldlm_lock_create(ns, NULL, res->lr_name, LDLM_FLOCK,
+ new2 = ldlm_lock_create(ns, &res->lr_name, LDLM_FLOCK,
lock->l_granted_mode, NULL, NULL, NULL,
NULL, 0);
if (!new2) {
new2->l_conn_export = lock->l_conn_export;
if (lock->l_export != NULL) {
new2->l_export = class_export_get(lock->l_export);
+ spin_lock(&new2->l_export->exp_ldlm_data.led_lock);
list_add(&new2->l_export_chain,
&new2->l_export->exp_ldlm_data.led_held_locks);
+ spin_unlock(&new2->l_export->exp_ldlm_data.led_lock);
}
if (*flags == LDLM_FL_WAIT_NOREPROC)
ldlm_lock_addref_internal(new2, lock->l_granted_mode);
if (*flags != LDLM_FL_WAIT_NOREPROC) {
if (first_enq) {
/* If this is an unlock, reprocess the waitq and
- * send completions ASTs for locks that can now be
+ * send completions ASTs for locks that can now be
* granted. The only problem with doing this
* reprocessing here is that the completion ASTs for
* newly granted locks will be sent before the unlock
* ldlm_reprocess_queue. */
if ((mode == LCK_NL) && overlaps) {
struct list_head rpc_list
- = LIST_HEAD_INIT(rpc_list);
+ = CFS_LIST_HEAD_INIT(rpc_list);
int rc;
restart:
- res->lr_tmp = &rpc_list;
- ldlm_reprocess_queue(res, &res->lr_waiting);
- res->lr_tmp = NULL;
-
- l_unlock(&ns->ns_lock);
- rc = ldlm_run_ast_work(res->lr_namespace,
- &rpc_list);
- l_lock(&ns->ns_lock);
+ ldlm_reprocess_queue(res, &res->lr_waiting,
+ &rpc_list);
+
+ unlock_res(res);
+ rc = ldlm_run_bl_ast_work(&rpc_list);
+ lock_res(res);
if (rc == -ERESTART)
GOTO(restart, -ERESTART);
}
} else {
LASSERT(req->l_completion_ast);
- ldlm_add_ast_work_item(req, NULL, NULL, 0);
+ ldlm_add_ast_work_item(req, NULL, work_list);
}
}
if (added)
ldlm_flock_destroy(req, mode, *flags);
- ldlm_resource_dump(res);
+ ldlm_resource_dump(D_OTHER, res);
RETURN(LDLM_ITER_CONTINUE);
}
{
struct ldlm_lock *lock;
struct lustre_handle lockh;
- int rc;
ENTRY;
lock = ((struct ldlm_flock_wait_data *)data)->fwd_lock;
/* take lock off the deadlock detection waitq. */
list_del_init(&lock->l_flock_waitq);
+ /* client side - set flag to prevent lock from being put on lru list */
+ lock->l_flags |= LDLM_FL_CBPENDING;
+
ldlm_lock_decref_internal(lock, lock->l_req_mode);
ldlm_lock2handle(lock, &lockh);
- rc = ldlm_cli_cancel(&lockh);
+ ldlm_cli_cancel(&lockh);
EXIT;
}
ldlm_flock_completion_ast(struct ldlm_lock *lock, int flags, void *data)
{
struct ldlm_namespace *ns;
- struct file_lock *getlk = lock->l_ast_data;
+ cfs_flock_t *getlk = lock->l_ast_data;
struct ldlm_flock_wait_data fwd;
- unsigned long irqflags;
struct obd_device *obd;
struct obd_import *imp = NULL;
ldlm_error_t err;
LASSERT(flags != LDLM_FL_WAIT_NOREPROC);
- if (flags == 0) {
- wake_up(&lock->l_waitq);
- RETURN(0);
- }
-
if (!(flags & (LDLM_FL_BLOCK_WAIT | LDLM_FL_BLOCK_GRANTED |
LDLM_FL_BLOCK_CONV)))
goto granted;
LDLM_DEBUG(lock, "client-side enqueue returned a blocked lock, "
"sleeping");
- ldlm_lock_dump(D_DLMTRACE, lock, 0);
-
fwd.fwd_lock = lock;
obd = class_exp2obd(lock->l_conn_export);
imp = obd->u.cli.cl_import;
if (imp != NULL) {
- spin_lock_irqsave(&imp->imp_lock, irqflags);
+ spin_lock(&imp->imp_lock);
fwd.fwd_generation = imp->imp_generation;
- spin_unlock_irqrestore(&imp->imp_lock, irqflags);
+ spin_unlock(&imp->imp_lock);
}
lwi = LWI_TIMEOUT_INTR(0, NULL, ldlm_flock_interrupted_wait, &fwd);
((lock->l_req_mode == lock->l_granted_mode) ||
lock->l_destroyed), &lwi);
- if (rc) {
- LDLM_DEBUG(lock, "client-side enqueue waking up: failed (%d)",
- rc);
- RETURN(rc);
- }
-
- LASSERT(!(lock->l_destroyed));
+ LDLM_DEBUG(lock, "client-side enqueue waking up: rc = %d", rc);
+ RETURN(rc);
granted:
- LDLM_DEBUG(lock, "client-side enqueue waking up");
+ LDLM_DEBUG(lock, "client-side enqueue granted");
ns = lock->l_resource->lr_namespace;
- l_lock(&ns->ns_lock);
+ lock_res(lock->l_resource);
/* take lock off the deadlock detection waitq. */
list_del_init(&lock->l_flock_waitq);
/* fcntl(F_GETLK) request */
/* The old mode was saved in getlk->fl_type so that if the mode
* in the lock changes we can decref the approprate refcount. */
- ldlm_flock_destroy(lock, getlk->fl_type, LDLM_FL_WAIT_NOREPROC);
+ ldlm_flock_destroy(lock, cfs_flock_type(getlk), LDLM_FL_WAIT_NOREPROC);
switch (lock->l_granted_mode) {
case LCK_PR:
- getlk->fl_type = F_RDLCK;
+ cfs_flock_set_type(getlk, F_RDLCK);
break;
case LCK_PW:
- getlk->fl_type = F_WRLCK;
+ cfs_flock_set_type(getlk, F_WRLCK);
break;
default:
- getlk->fl_type = F_UNLCK;
+ cfs_flock_set_type(getlk, F_UNLCK);
}
- getlk->fl_pid = lock->l_policy_data.l_flock.pid;
- getlk->fl_start = lock->l_policy_data.l_flock.start;
- getlk->fl_end = lock->l_policy_data.l_flock.end;
+ cfs_flock_set_pid(getlk, (pid_t)lock->l_policy_data.l_flock.pid);
+ cfs_flock_set_start(getlk, (loff_t)lock->l_policy_data.l_flock.start);
+ cfs_flock_set_end(getlk, (loff_t)lock->l_policy_data.l_flock.end);
} else {
+ int noreproc = LDLM_FL_WAIT_NOREPROC;
+
/* We need to reprocess the lock to do merges or splits
* with existing locks owned by this process. */
- flags = LDLM_FL_WAIT_NOREPROC;
- ldlm_process_flock_lock(lock, &flags, 1, &err);
+ ldlm_process_flock_lock(lock, &noreproc, 1, &err, NULL);
+ if (flags == 0)
+ cfs_waitq_signal(&lock->l_waitq);
}
- l_unlock(&ns->ns_lock);
+ unlock_res(lock->l_resource);
RETURN(0);
}
+EXPORT_SYMBOL(ldlm_flock_completion_ast);
int ldlm_flock_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
void *data, int flag)
LASSERT(flag == LDLM_CB_CANCELING);
ns = lock->l_resource->lr_namespace;
-
+
/* take lock off the deadlock detection waitq. */
- l_lock(&ns->ns_lock);
+ lock_res_and_lock(lock);
list_del_init(&lock->l_flock_waitq);
- l_unlock(&ns->ns_lock);
+ unlock_res_and_lock(lock);
RETURN(0);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff