/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2002-2004 Cluster File Systems, Inc.
- * Author: Peter Braam <braam@clusterfs.com>
- * Author: Phil Schwan <phil@clusterfs.com>
+ * 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.
+ *
+ * lustre/ldlm/ldlm_lockd.c
+ *
+ * Author: Peter Braam <braam@clusterfs.com>
+ * Author: Phil Schwan <phil@clusterfs.com>
*/
#ifndef EXPORT_SYMTAB
#include <libcfs/list.h>
#include "ldlm_internal.h"
+#ifdef __KERNEL__
+static int ldlm_num_threads;
+CFS_MODULE_PARM(ldlm_num_threads, "i", int, 0444,
+ "number of DLM service threads to start");
+#endif
+
extern cfs_mem_cache_t *ldlm_resource_slab;
extern cfs_mem_cache_t *ldlm_lock_slab;
-extern struct lustre_lock ldlm_handle_lock;
-extern struct list_head ldlm_namespace_list;
-
-extern struct semaphore ldlm_namespace_lock;
-static struct semaphore ldlm_ref_sem;
+static cfs_semaphore_t ldlm_ref_sem;
static int ldlm_refcount;
/* LDLM state */
return cfs_time_seconds((int)cfs_duration_sec(cfs_time_sub(timeout, 0)) + 1);
}
-/* timeout for initial callback (AST) reply */
-static inline unsigned int ldlm_get_rq_timeout(unsigned int ldlm_timeout,
- unsigned int obd_timeout)
+/* timeout for initial callback (AST) reply (bz10399) */
+static inline unsigned int ldlm_get_rq_timeout(void)
{
+ /* Non-AT value */
unsigned int timeout = min(ldlm_timeout, obd_timeout / 3);
return timeout < 1 ? 1 : timeout;
#ifdef __KERNEL__
/* w_l_spinlock protects both waiting_locks_list and expired_lock_thread */
-static spinlock_t waiting_locks_spinlock; /* BH lock (timer) */
-static struct list_head waiting_locks_list;
+static cfs_spinlock_t waiting_locks_spinlock; /* BH lock (timer) */
+static cfs_list_t waiting_locks_list;
static cfs_timer_t waiting_locks_timer;
static struct expired_lock_thread {
cfs_waitq_t elt_waitq;
int elt_state;
int elt_dump;
- struct list_head elt_expired_locks;
+ cfs_list_t elt_expired_locks;
} expired_lock_thread;
#endif
#define ELT_TERMINATE 2
struct ldlm_bl_pool {
- spinlock_t blp_lock;
- struct list_head blp_list;
+ cfs_spinlock_t blp_lock;
+
+ /*
+ * blp_prio_list is used for callbacks that should be handled
+ * as a priority. It is used for LDLM_FL_DISCARD_DATA requests.
+ * see bug 13843
+ */
+ cfs_list_t blp_prio_list;
+
+ /*
+ * blp_list is used for all other callbacks which are likely
+ * to take longer to process.
+ */
+ cfs_list_t blp_list;
+
cfs_waitq_t blp_waitq;
- atomic_t blp_num_threads;
- struct completion blp_comp;
+ cfs_completion_t blp_comp;
+ cfs_atomic_t blp_num_threads;
+ cfs_atomic_t blp_busy_threads;
+ int blp_min_threads;
+ int blp_max_threads;
};
struct ldlm_bl_work_item {
- struct list_head blwi_entry;
- struct ldlm_namespace *blwi_ns;
+ cfs_list_t blwi_entry;
+ struct ldlm_namespace *blwi_ns;
struct ldlm_lock_desc blwi_ld;
- struct ldlm_lock *blwi_lock;
+ struct ldlm_lock *blwi_lock;
+ cfs_list_t blwi_head;
+ int blwi_count;
+ cfs_completion_t blwi_comp;
+ cfs_atomic_t blwi_ref_count;
};
#ifdef __KERNEL__
+static inline void ldlm_bl_work_item_get(struct ldlm_bl_work_item *blwi)
+{
+ cfs_atomic_inc(&blwi->blwi_ref_count);
+}
+
+static inline void ldlm_bl_work_item_put(struct ldlm_bl_work_item *blwi)
+{
+ if (cfs_atomic_dec_and_test(&blwi->blwi_ref_count))
+ OBD_FREE(blwi, sizeof(*blwi));
+}
static inline int have_expired_locks(void)
{
int need_to_run;
ENTRY;
- spin_lock_bh(&waiting_locks_spinlock);
- need_to_run = !list_empty(&expired_lock_thread.elt_expired_locks);
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
+ need_to_run = !cfs_list_empty(&expired_lock_thread.elt_expired_locks);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
RETURN(need_to_run);
}
static int expired_lock_main(void *arg)
{
- struct list_head *expired = &expired_lock_thread.elt_expired_locks;
+ cfs_list_t *expired = &expired_lock_thread.elt_expired_locks;
struct l_wait_info lwi = { 0 };
int do_dump;
expired_lock_thread.elt_state == ELT_TERMINATE,
&lwi);
- spin_lock_bh(&waiting_locks_spinlock);
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
if (expired_lock_thread.elt_dump) {
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
/* from waiting_locks_callback, but not in timer */
libcfs_debug_dumplog();
"waiting_locks_callback",
expired_lock_thread.elt_dump);
- spin_lock_bh(&waiting_locks_spinlock);
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
expired_lock_thread.elt_dump = 0;
}
do_dump = 0;
- while (!list_empty(expired)) {
+ while (!cfs_list_empty(expired)) {
struct obd_export *export;
struct ldlm_lock *lock;
- lock = list_entry(expired->next, struct ldlm_lock,
+ lock = cfs_list_entry(expired->next, struct ldlm_lock,
l_pending_chain);
if ((void *)lock < LP_POISON + CFS_PAGE_SIZE &&
(void *)lock >= LP_POISON) {
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
CERROR("free lock on elt list %p\n", lock);
LBUG();
}
- list_del_init(&lock->l_pending_chain);
+ cfs_list_del_init(&lock->l_pending_chain);
if ((void *)lock->l_export < LP_POISON + CFS_PAGE_SIZE &&
(void *)lock->l_export >= LP_POISON) {
CERROR("lock with free export on elt list %p\n",
lock->l_export);
lock->l_export = NULL;
LDLM_ERROR(lock, "free export");
+ /* release extra ref grabbed by
+ * ldlm_add_waiting_lock() or
+ * ldlm_failed_ast() */
+ LDLM_LOCK_RELEASE(lock);
continue;
}
- export = class_export_get(lock->l_export);
- spin_unlock_bh(&waiting_locks_spinlock);
+ export = class_export_lock_get(lock->l_export, lock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
do_dump++;
class_fail_export(export);
- class_export_put(export);
- spin_lock_bh(&waiting_locks_spinlock);
+ class_export_lock_put(export, lock);
+
+ /* release extra ref grabbed by ldlm_add_waiting_lock()
+ * or ldlm_failed_ast() */
+ LDLM_LOCK_RELEASE(lock);
+
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
}
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
if (do_dump && obd_dump_on_eviction) {
CERROR("dump the log upon eviction\n");
RETURN(0);
}
+static int ldlm_add_waiting_lock(struct ldlm_lock *lock);
+
+/**
+ * Check if there is a request in the export request list
+ * which prevents the lock canceling.
+ */
+static int ldlm_lock_busy(struct ldlm_lock *lock)
+{
+ struct ptlrpc_request *req;
+ int match = 0;
+ ENTRY;
+
+ if (lock->l_export == NULL)
+ return 0;
+
+ cfs_spin_lock(&lock->l_export->exp_lock);
+ cfs_list_for_each_entry(req, &lock->l_export->exp_queued_rpc,
+ rq_exp_list) {
+ if (req->rq_ops->hpreq_lock_match) {
+ match = req->rq_ops->hpreq_lock_match(req, lock);
+ if (match)
+ break;
+ }
+ }
+ cfs_spin_unlock(&lock->l_export->exp_lock);
+ RETURN(match);
+}
+
/* This is called from within a timer interrupt and cannot schedule */
static void waiting_locks_callback(unsigned long unused)
{
struct ldlm_lock *lock, *last = NULL;
- spin_lock_bh(&waiting_locks_spinlock);
- while (!list_empty(&waiting_locks_list)) {
- lock = list_entry(waiting_locks_list.next, struct ldlm_lock,
- l_pending_chain);
-
- if (cfs_time_after(lock->l_callback_timeout, cfs_time_current()) ||
+repeat:
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
+ while (!cfs_list_empty(&waiting_locks_list)) {
+ lock = cfs_list_entry(waiting_locks_list.next, struct ldlm_lock,
+ l_pending_chain);
+ if (cfs_time_after(lock->l_callback_timeout,
+ cfs_time_current()) ||
(lock->l_req_mode == LCK_GROUP))
break;
- LDLM_ERROR(lock, "lock callback timer expired: evicting client "
- "%s@%s nid %s ",lock->l_export->exp_client_uuid.uuid,
- lock->l_export->exp_connection->c_remote_uuid.uuid,
- libcfs_nid2str(lock->l_export->exp_connection->c_peer.nid));
-
- if (lock == last) {
- LDLM_ERROR(lock, "waiting on lock multiple times");
- CERROR("wll %p n/p %p/%p, l_pending %p n/p %p/%p\n",
- &waiting_locks_list,
- waiting_locks_list.next, waiting_locks_list.prev,
- &lock->l_pending_chain,
- lock->l_pending_chain.next,
- lock->l_pending_chain.prev);
-
- CFS_INIT_LIST_HEAD(&waiting_locks_list); /* HACK */
- expired_lock_thread.elt_dump = __LINE__;
+ if (ptlrpc_check_suspend()) {
+ /* there is a case when we talk to one mds, holding
+ * lock from another mds. this way we easily can get
+ * here, if second mds is being recovered. so, we
+ * suspend timeouts. bug 6019 */
+
+ LDLM_ERROR(lock, "recharge timeout: %s@%s nid %s ",
+ lock->l_export->exp_client_uuid.uuid,
+ lock->l_export->exp_connection->c_remote_uuid.uuid,
+ libcfs_nid2str(lock->l_export->exp_connection->c_peer.nid));
+
+ cfs_list_del_init(&lock->l_pending_chain);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
+ ldlm_add_waiting_lock(lock);
+ goto repeat;
+ }
- /* LBUG(); */
- CEMERG("would be an LBUG, but isn't (bug 5653)\n");
- libcfs_debug_dumpstack(NULL);
- /*blocks* libcfs_debug_dumplog(); */
- /*blocks* libcfs_run_lbug_upcall(file, func, line); */
- break;
+ /* if timeout overlaps the activation time of suspended timeouts
+ * then extend it to give a chance for client to reconnect */
+ if (cfs_time_before(cfs_time_sub(lock->l_callback_timeout,
+ cfs_time_seconds(obd_timeout)/2),
+ ptlrpc_suspend_wakeup_time())) {
+ LDLM_ERROR(lock, "extend timeout due to recovery: %s@%s nid %s ",
+ lock->l_export->exp_client_uuid.uuid,
+ lock->l_export->exp_connection->c_remote_uuid.uuid,
+ libcfs_nid2str(lock->l_export->exp_connection->c_peer.nid));
+
+ cfs_list_del_init(&lock->l_pending_chain);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
+ ldlm_add_waiting_lock(lock);
+ goto repeat;
}
+
+ /* Check if we need to prolong timeout */
+ if (!OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_HPREQ_TIMEOUT) &&
+ ldlm_lock_busy(lock)) {
+ int cont = 1;
+
+ if (lock->l_pending_chain.next == &waiting_locks_list)
+ cont = 0;
+
+ LDLM_LOCK_GET(lock);
+
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
+ LDLM_DEBUG(lock, "prolong the busy lock");
+ ldlm_refresh_waiting_lock(lock,
+ ldlm_get_enq_timeout(lock));
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
+
+ if (!cont) {
+ LDLM_LOCK_RELEASE(lock);
+ break;
+ }
+
+ LDLM_LOCK_RELEASE(lock);
+ continue;
+ }
+ lock->l_resource->lr_namespace->ns_timeouts++;
+ LDLM_ERROR(lock, "lock callback timer expired after %lds: "
+ "evicting client at %s ",
+ cfs_time_current_sec()- lock->l_last_activity,
+ libcfs_nid2str(
+ lock->l_export->exp_connection->c_peer.nid));
+
last = lock;
- list_del(&lock->l_pending_chain);
- list_add(&lock->l_pending_chain,
- &expired_lock_thread.elt_expired_locks);
+ /* no needs to take an extra ref on the lock since it was in
+ * the waiting_locks_list and ldlm_add_waiting_lock()
+ * already grabbed a ref */
+ cfs_list_del(&lock->l_pending_chain);
+ cfs_list_add(&lock->l_pending_chain,
+ &expired_lock_thread.elt_expired_locks);
}
- if (!list_empty(&expired_lock_thread.elt_expired_locks)) {
+ if (!cfs_list_empty(&expired_lock_thread.elt_expired_locks)) {
if (obd_dump_on_timeout)
expired_lock_thread.elt_dump = __LINE__;
* Make sure the timer will fire again if we have any locks
* left.
*/
- if (!list_empty(&waiting_locks_list)) {
+ if (!cfs_list_empty(&waiting_locks_list)) {
cfs_time_t timeout_rounded;
- lock = list_entry(waiting_locks_list.next, struct ldlm_lock,
- l_pending_chain);
+ lock = cfs_list_entry(waiting_locks_list.next, struct ldlm_lock,
+ l_pending_chain);
timeout_rounded = (cfs_time_t)round_timeout(lock->l_callback_timeout);
cfs_timer_arm(&waiting_locks_timer, timeout_rounded);
}
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
}
/*
* lock. We add it to the pending-callback chain, and schedule the lock-timeout
* timer to fire appropriately. (We round up to the next second, to avoid
* floods of timer firings during periods of high lock contention and traffic).
+ * As done by ldlm_add_waiting_lock(), the caller must grab a lock reference
+ * if it has been added to the waiting list (1 is returned).
*
* Called with the namespace lock held.
*/
-static int __ldlm_add_waiting_lock(struct ldlm_lock *lock)
+static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, int seconds)
{
+ cfs_time_t timeout;
cfs_time_t timeout_rounded;
- if (!list_empty(&lock->l_pending_chain))
+ if (!cfs_list_empty(&lock->l_pending_chain))
return 0;
- lock->l_callback_timeout =cfs_time_add(cfs_time_current(),
- cfs_time_seconds(obd_timeout)/2);
+ if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT) ||
+ OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_HPREQ_TIMEOUT))
+ seconds = 1;
+
+ timeout = cfs_time_shift(seconds);
+ if (likely(cfs_time_after(timeout, lock->l_callback_timeout)))
+ lock->l_callback_timeout = timeout;
timeout_rounded = round_timeout(lock->l_callback_timeout);
- if (cfs_time_before(timeout_rounded, cfs_timer_deadline(&waiting_locks_timer)) ||
+ if (cfs_time_before(timeout_rounded,
+ cfs_timer_deadline(&waiting_locks_timer)) ||
!cfs_timer_is_armed(&waiting_locks_timer)) {
cfs_timer_arm(&waiting_locks_timer, timeout_rounded);
-
}
- list_add_tail(&lock->l_pending_chain, &waiting_locks_list); /* FIFO */
+ /* if the new lock has a shorter timeout than something earlier on
+ the list, we'll wait the longer amount of time; no big deal. */
+ /* FIFO */
+ cfs_list_add_tail(&lock->l_pending_chain, &waiting_locks_list);
return 1;
}
static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
{
int ret;
+ int timeout = ldlm_get_enq_timeout(lock);
LASSERT(!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK));
- spin_lock_bh(&waiting_locks_spinlock);
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
if (lock->l_destroyed) {
static cfs_time_t next;
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
LDLM_ERROR(lock, "not waiting on destroyed lock (bug 5653)");
if (cfs_time_after(cfs_time_current(), next)) {
next = cfs_time_shift(14400);
return 0;
}
- ret = __ldlm_add_waiting_lock(lock);
- spin_unlock_bh(&waiting_locks_spinlock);
+ ret = __ldlm_add_waiting_lock(lock, timeout);
+ if (ret)
+ /* grab ref on the lock if it has been added to the
+ * waiting list */
+ LDLM_LOCK_GET(lock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
- LDLM_DEBUG(lock, "%sadding to wait list",
- ret == 0 ? "not re-" : "");
+ LDLM_DEBUG(lock, "%sadding to wait list(timeout: %d, AT: %s)",
+ ret == 0 ? "not re-" : "", timeout,
+ AT_OFF ? "off" : "on");
return ret;
}
* Remove a lock from the pending list, likely because it had its cancellation
* callback arrive without incident. This adjusts the lock-timeout timer if
* needed. Returns 0 if the lock wasn't pending after all, 1 if it was.
+ * As done by ldlm_del_waiting_lock(), the caller must release the lock
+ * reference when the lock is removed from any list (1 is returned).
*
* Called with namespace lock held.
*/
-int __ldlm_del_waiting_lock(struct ldlm_lock *lock)
+static int __ldlm_del_waiting_lock(struct ldlm_lock *lock)
{
- struct list_head *list_next;
+ cfs_list_t *list_next;
- if (list_empty(&lock->l_pending_chain))
+ if (cfs_list_empty(&lock->l_pending_chain))
return 0;
list_next = lock->l_pending_chain.next;
cfs_timer_disarm(&waiting_locks_timer);
} else {
struct ldlm_lock *next;
- next = list_entry(list_next, struct ldlm_lock,
- l_pending_chain);
+ next = cfs_list_entry(list_next, struct ldlm_lock,
+ l_pending_chain);
cfs_timer_arm(&waiting_locks_timer,
round_timeout(next->l_callback_timeout));
}
}
- list_del_init(&lock->l_pending_chain);
+ cfs_list_del_init(&lock->l_pending_chain);
return 1;
}
if (lock->l_export == NULL) {
/* We don't have a "waiting locks list" on clients. */
- LDLM_DEBUG(lock, "client lock: no-op");
+ CDEBUG(D_DLMTRACE, "Client lock %p : no-op\n", lock);
return 0;
}
- spin_lock_bh(&waiting_locks_spinlock);
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
ret = __ldlm_del_waiting_lock(lock);
- spin_unlock_bh(&waiting_locks_spinlock);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
+ if (ret)
+ /* release lock ref if it has indeed been removed
+ * from a list */
+ LDLM_LOCK_RELEASE(lock);
LDLM_DEBUG(lock, "%s", ret == 0 ? "wasn't waiting" : "removed");
return ret;
/*
* Prolong the lock
- *
+ *
* Called with namespace lock held.
*/
-int ldlm_refresh_waiting_lock(struct ldlm_lock *lock)
+int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, int timeout)
{
if (lock->l_export == NULL) {
/* We don't have a "waiting locks list" on clients. */
return 0;
}
- spin_lock_bh(&waiting_locks_spinlock);
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
- if (list_empty(&lock->l_pending_chain)) {
- spin_unlock_bh(&waiting_locks_spinlock);
+ if (cfs_list_empty(&lock->l_pending_chain)) {
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
LDLM_DEBUG(lock, "wasn't waiting");
return 0;
}
+ /* we remove/add the lock to the waiting list, so no needs to
+ * release/take a lock reference */
__ldlm_del_waiting_lock(lock);
- __ldlm_add_waiting_lock(lock);
- spin_unlock_bh(&waiting_locks_spinlock);
+ __ldlm_add_waiting_lock(lock, timeout);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
LDLM_DEBUG(lock, "refreshed");
return 1;
}
-
#else /* !__KERNEL__ */
static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
RETURN(0);
}
-int ldlm_refresh_waiting_lock(struct ldlm_lock *lock)
+int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, int timeout)
{
RETURN(0);
}
static void ldlm_failed_ast(struct ldlm_lock *lock, int rc,
const char *ast_type)
{
- struct ptlrpc_connection *conn = lock->l_export->exp_connection;
- char *str = libcfs_nid2str(conn->c_peer.nid);
-
- LCONSOLE_ERROR("A client on nid %s was evicted from service %s.\n",
- str, lock->l_export->exp_obd->obd_name);
-
- LDLM_ERROR(lock, "%s AST failed (%d): evicting client %s@%s NID %s"
- " (%s)", ast_type, rc, lock->l_export->exp_client_uuid.uuid,
- conn->c_remote_uuid.uuid, libcfs_nid2str(conn->c_peer.nid),
- str);
+ LCONSOLE_ERROR_MSG(0x138, "%s: A client on nid %s was evicted due "
+ "to a lock %s callback time out: rc %d\n",
+ lock->l_export->exp_obd->obd_name,
+ obd_export_nid2str(lock->l_export), ast_type, rc);
if (obd_dump_on_timeout)
libcfs_debug_dumplog();
+#ifdef __KERNEL__
+ cfs_spin_lock_bh(&waiting_locks_spinlock);
+ if (__ldlm_del_waiting_lock(lock) == 0)
+ /* the lock was not in any list, grab an extra ref before adding
+ * the lock to the expired list */
+ LDLM_LOCK_GET(lock);
+ cfs_list_add(&lock->l_pending_chain,
+ &expired_lock_thread.elt_expired_locks);
+ cfs_waitq_signal(&expired_lock_thread.elt_waitq);
+ cfs_spin_unlock_bh(&waiting_locks_spinlock);
+#else
class_fail_export(lock->l_export);
+#endif
}
static int ldlm_handle_ast_error(struct ldlm_lock *lock,
} else if (rc) {
if (rc == -EINVAL)
LDLM_DEBUG(lock, "client (nid %s) returned %d"
- " from %s AST - normal race",
- libcfs_nid2str(peer.nid),
- lustre_msg_get_status(req->rq_repmsg),
- ast_type);
+ " from %s AST - normal race",
+ libcfs_nid2str(peer.nid),
+ req->rq_repmsg ?
+ lustre_msg_get_status(req->rq_repmsg) : -1,
+ ast_type);
else
LDLM_ERROR(lock, "client (nid %s) returned %d "
"from %s AST", libcfs_nid2str(peer.nid),
return rc;
}
+static int ldlm_cb_interpret(const struct lu_env *env,
+ struct ptlrpc_request *req, void *data, int rc)
+{
+ struct ldlm_cb_set_arg *arg;
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ LASSERT(data != NULL);
+
+ arg = req->rq_async_args.pointer_arg[0];
+ lock = req->rq_async_args.pointer_arg[1];
+ LASSERT(lock != NULL);
+ if (rc != 0) {
+ /* If client canceled the lock but the cancel has not
+ * been received yet, we need to update lvbo to have the
+ * proper attributes cached. */
+ if (rc == -EINVAL && arg->type == LDLM_BL_CALLBACK)
+ ldlm_res_lvbo_update(lock->l_resource, NULL, 1);
+ rc = ldlm_handle_ast_error(lock, req, rc,
+ arg->type == LDLM_BL_CALLBACK
+ ? "blocking" : "completion");
+ }
+
+ LDLM_LOCK_RELEASE(lock);
+
+ if (rc == -ERESTART)
+ cfs_atomic_set(&arg->restart, 1);
+
+ RETURN(0);
+}
+
+static inline int ldlm_bl_and_cp_ast_fini(struct ptlrpc_request *req,
+ struct ldlm_cb_set_arg *arg,
+ struct ldlm_lock *lock,
+ int instant_cancel)
+{
+ int rc = 0;
+ ENTRY;
+
+ if (unlikely(instant_cancel)) {
+ rc = ptl_send_rpc(req, 1);
+ ptlrpc_req_finished(req);
+ if (rc == 0)
+ /* If we cancelled the lock, we need to restart
+ * ldlm_reprocess_queue */
+ cfs_atomic_set(&arg->restart, 1);
+ } else {
+ LDLM_LOCK_GET(lock);
+ ptlrpc_set_add_req(arg->set, req);
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Check if there are requests in the export request list which prevent
+ * the lock canceling and make these requests high priority ones.
+ */
+static void ldlm_lock_reorder_req(struct ldlm_lock *lock)
+{
+ struct ptlrpc_request *req;
+ ENTRY;
+
+ if (lock->l_export == NULL) {
+ LDLM_DEBUG(lock, "client lock: no-op");
+ RETURN_EXIT;
+ }
+
+ cfs_spin_lock(&lock->l_export->exp_lock);
+ cfs_list_for_each_entry(req, &lock->l_export->exp_queued_rpc,
+ rq_exp_list) {
+ if (!req->rq_hp && req->rq_ops->hpreq_lock_match &&
+ req->rq_ops->hpreq_lock_match(req, lock))
+ ptlrpc_hpreq_reorder(req);
+ }
+ cfs_spin_unlock(&lock->l_export->exp_lock);
+ EXIT;
+}
+
+/*
+ * ->l_blocking_ast() method for server-side locks. This is invoked when newly
+ * enqueued server lock conflicts with given one.
+ *
+ * Sends blocking ast rpc to the client owning that lock; arms timeout timer
+ * to wait for client response.
+ */
int ldlm_server_blocking_ast(struct ldlm_lock *lock,
struct ldlm_lock_desc *desc,
void *data, int flag)
{
- struct ldlm_request *body;
- struct ptlrpc_request *req;
- int size[] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREQ_OFF] = sizeof(*body) };
- int instant_cancel = 0, rc = 0;
+ struct ldlm_cb_set_arg *arg = data;
+ struct ldlm_request *body;
+ struct ptlrpc_request *req;
+ int instant_cancel = 0;
+ int rc = 0;
ENTRY;
- if (flag == LDLM_CB_CANCELING) {
+ if (flag == LDLM_CB_CANCELING)
/* Don't need to do anything here. */
RETURN(0);
- }
LASSERT(lock);
+ LASSERT(data != NULL);
+ if (lock->l_export->exp_obd->obd_recovering != 0) {
+ LDLM_ERROR(lock, "BUG 6063: lock collide during recovery");
+ ldlm_lock_dump(D_ERROR, lock, 0);
+ }
+
+ ldlm_lock_reorder_req(lock);
- req = ptlrpc_prep_req(lock->l_export->exp_imp_reverse,
- LUSTRE_DLM_VERSION, LDLM_BL_CALLBACK, 2, size,
- NULL);
+ req = ptlrpc_request_alloc_pack(lock->l_export->exp_imp_reverse,
+ &RQF_LDLM_BL_CALLBACK,
+ LUSTRE_DLM_VERSION, LDLM_BL_CALLBACK);
if (req == NULL)
RETURN(-ENOMEM);
+ req->rq_async_args.pointer_arg[0] = arg;
+ req->rq_async_args.pointer_arg[1] = lock;
+ req->rq_interpret_reply = ldlm_cb_interpret;
+ req->rq_no_resend = 1;
+
lock_res(lock->l_resource);
if (lock->l_granted_mode != lock->l_req_mode) {
/* this blocking AST will be communicated as part of the
RETURN(0);
}
-#if 0
- if (CURRENT_SECONDS - lock->l_export->exp_last_request_time > 30){
- unlock_res(lock->l_resource);
- ptlrpc_req_finished(req);
- ldlm_failed_ast(lock, -ETIMEDOUT, "Not-attempted blocking");
- RETURN(-ETIMEDOUT);
- }
-#endif
-
if (lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK)
instant_cancel = 1;
- body = lustre_msg_buf(req->rq_reqmsg, DLM_LOCKREQ_OFF, sizeof(*body));
- body->lock_handle1 = lock->l_remote_handle;
+ body = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ body->lock_handle[0] = lock->l_remote_handle;
body->lock_desc = *desc;
body->lock_flags |= (lock->l_flags & LDLM_AST_FLAGS);
LDLM_DEBUG(lock, "server preparing blocking AST");
- ptlrpc_req_set_repsize(req, 1, NULL);
+ ptlrpc_request_set_replen(req);
if (instant_cancel) {
unlock_res(lock->l_resource);
ldlm_lock_cancel(lock);
- } else if (lock->l_granted_mode == lock->l_req_mode) {
+ } else {
+ LASSERT(lock->l_granted_mode == lock->l_req_mode);
ldlm_add_waiting_lock(lock);
unlock_res(lock->l_resource);
}
req->rq_send_state = LUSTRE_IMP_FULL;
- req->rq_timeout = ldlm_get_rq_timeout(ldlm_timeout, obd_timeout);
+ /* ptlrpc_request_alloc_pack already set timeout */
+ if (AT_OFF)
+ req->rq_timeout = ldlm_get_rq_timeout();
- if (lock->l_export && lock->l_export->exp_ldlm_stats)
- lprocfs_counter_incr(lock->l_export->exp_ldlm_stats,
+ if (lock->l_export && lock->l_export->exp_nid_stats &&
+ lock->l_export->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(lock->l_export->exp_nid_stats->nid_ldlm_stats,
LDLM_BL_CALLBACK - LDLM_FIRST_OPC);
- if (unlikely(instant_cancel)) {
- rc = ptl_send_rpc(req, 1);
- } else {
- rc = ptlrpc_queue_wait(req);
- OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2);
- }
- if (rc != 0)
- rc = ldlm_handle_ast_error(lock, req, rc, "blocking");
-
- ptlrpc_req_finished(req);
-
- /* If we cancelled the lock, we need to restart ldlm_reprocess_queue */
- if (!rc && instant_cancel)
- rc = -ERESTART;
+ rc = ldlm_bl_and_cp_ast_fini(req, arg, lock, instant_cancel);
RETURN(rc);
}
int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data)
{
- struct ldlm_request *body;
- struct ptlrpc_request *req;
- struct timeval granted_time;
- long total_enqueue_wait;
- int size[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREQ_OFF] = sizeof(*body) };
- int rc = 0, buffers = 2, instant_cancel = 0;
+ struct ldlm_cb_set_arg *arg = data;
+ struct ldlm_request *body;
+ struct ptlrpc_request *req;
+ long total_enqueue_wait;
+ int instant_cancel = 0;
+ int rc = 0;
ENTRY;
LASSERT(lock != NULL);
+ LASSERT(data != NULL);
- do_gettimeofday(&granted_time);
- total_enqueue_wait = cfs_timeval_sub(&granted_time,
- &lock->l_enqueued_time, NULL);
+ total_enqueue_wait = cfs_time_sub(cfs_time_current_sec(),
+ lock->l_last_activity);
- if (total_enqueue_wait / 1000000 > obd_timeout)
- LDLM_ERROR(lock, "enqueue wait took %luus from %lu",
- total_enqueue_wait, lock->l_enqueued_time.tv_sec);
+ req = ptlrpc_request_alloc(lock->l_export->exp_imp_reverse,
+ &RQF_LDLM_CP_CALLBACK);
+ if (req == NULL)
+ RETURN(-ENOMEM);
lock_res_and_lock(lock);
- if (lock->l_resource->lr_lvb_len) {
- size[DLM_REQ_REC_OFF] = lock->l_resource->lr_lvb_len;
- buffers = 3;
- }
+ if (lock->l_resource->lr_lvb_len)
+ req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_CLIENT,
+ lock->l_resource->lr_lvb_len);
unlock_res_and_lock(lock);
- req = ptlrpc_prep_req(lock->l_export->exp_imp_reverse,
- LUSTRE_DLM_VERSION, LDLM_CP_CALLBACK, buffers,
- size, NULL);
- if (req == NULL)
- RETURN(-ENOMEM);
+ rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_CP_CALLBACK);
+ if (rc) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+
+ req->rq_async_args.pointer_arg[0] = arg;
+ req->rq_async_args.pointer_arg[1] = lock;
+ req->rq_interpret_reply = ldlm_cb_interpret;
+ req->rq_no_resend = 1;
+ body = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
- body = lustre_msg_buf(req->rq_reqmsg, DLM_LOCKREQ_OFF, sizeof(*body));
- body->lock_handle1 = lock->l_remote_handle;
+ body->lock_handle[0] = lock->l_remote_handle;
body->lock_flags = flags;
ldlm_lock2desc(lock, &body->lock_desc);
+ if (lock->l_resource->lr_lvb_len) {
+ void *lvb = req_capsule_client_get(&req->rq_pill, &RMF_DLM_LVB);
- if (buffers == 3) {
- void *lvb;
-
- lvb = lustre_msg_buf(req->rq_reqmsg, DLM_REQ_REC_OFF,
- lock->l_resource->lr_lvb_len);
lock_res_and_lock(lock);
memcpy(lvb, lock->l_resource->lr_lvb_data,
lock->l_resource->lr_lvb_len);
unlock_res_and_lock(lock);
}
- LDLM_DEBUG(lock, "server preparing completion AST (after %ldus wait)",
+ LDLM_DEBUG(lock, "server preparing completion AST (after %lds wait)",
total_enqueue_wait);
- ptlrpc_req_set_repsize(req, 1, NULL);
+ /* Server-side enqueue wait time estimate, used in
+ __ldlm_add_waiting_lock to set future enqueue timers */
+ if (total_enqueue_wait < ldlm_get_enq_timeout(lock))
+ at_measured(&lock->l_resource->lr_namespace->ns_at_estimate,
+ total_enqueue_wait);
+ else
+ /* bz18618. Don't add lock enqueue time we spend waiting for a
+ previous callback to fail. Locks waiting legitimately will
+ get extended by ldlm_refresh_waiting_lock regardless of the
+ estimate, so it's okay to underestimate here. */
+ LDLM_DEBUG(lock, "lock completed after %lus; estimate was %ds. "
+ "It is likely that a previous callback timed out.",
+ total_enqueue_wait,
+ at_get(&lock->l_resource->lr_namespace->ns_at_estimate));
+
+ ptlrpc_request_set_replen(req);
req->rq_send_state = LUSTRE_IMP_FULL;
- req->rq_timeout = ldlm_get_rq_timeout(ldlm_timeout, obd_timeout);
+ /* ptlrpc_request_pack already set timeout */
+ if (AT_OFF)
+ req->rq_timeout = ldlm_get_rq_timeout();
/* We only send real blocking ASTs after the lock is granted */
lock_res_and_lock(lock);
if (lock->l_flags & LDLM_FL_AST_SENT) {
body->lock_flags |= LDLM_FL_AST_SENT;
+ /* copy ast flags like LDLM_FL_DISCARD_DATA */
+ body->lock_flags |= (lock->l_flags & LDLM_AST_FLAGS);
/* We might get here prior to ldlm_handle_enqueue setting
* LDLM_FL_CANCEL_ON_BLOCK flag. Then we will put this lock
instant_cancel = 1;
lock_res_and_lock(lock);
} else {
- ldlm_add_waiting_lock(lock); /* start the lock-timeout
- clock */
+ /* start the lock-timeout clock */
+ ldlm_add_waiting_lock(lock);
}
}
unlock_res_and_lock(lock);
- if (lock->l_export && lock->l_export->exp_ldlm_stats)
- lprocfs_counter_incr(lock->l_export->exp_ldlm_stats,
+ if (lock->l_export && lock->l_export->exp_nid_stats &&
+ lock->l_export->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(lock->l_export->exp_nid_stats->nid_ldlm_stats,
LDLM_CP_CALLBACK - LDLM_FIRST_OPC);
-
- rc = ptlrpc_queue_wait(req);
- if (rc != 0)
- rc = ldlm_handle_ast_error(lock, req, rc, "completion");
- ptlrpc_req_finished(req);
-
- /* If we cancelled the lock, we need to restart ldlm_reprocess_queue */
- if (!rc && instant_cancel)
- rc = -ERESTART;
+ rc = ldlm_bl_and_cp_ast_fini(req, arg, lock, instant_cancel);
RETURN(rc);
}
int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data)
{
- struct ldlm_resource *res = lock->l_resource;
- struct ldlm_request *body;
+ struct ldlm_resource *res = lock->l_resource;
+ struct ldlm_request *body;
struct ptlrpc_request *req;
- int size[] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREQ_OFF] = sizeof(*body) };
- int rc = 0;
+ int rc;
ENTRY;
LASSERT(lock != NULL);
- req = ptlrpc_prep_req(lock->l_export->exp_imp_reverse,
- LUSTRE_DLM_VERSION, LDLM_GL_CALLBACK, 2, size,
- NULL);
+ req = ptlrpc_request_alloc_pack(lock->l_export->exp_imp_reverse,
+ &RQF_LDLM_GL_CALLBACK,
+ LUSTRE_DLM_VERSION, LDLM_GL_CALLBACK);
+
if (req == NULL)
RETURN(-ENOMEM);
- body = lustre_msg_buf(req->rq_reqmsg, DLM_LOCKREQ_OFF, sizeof(*body));
- body->lock_handle1 = lock->l_remote_handle;
+ body = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ body->lock_handle[0] = lock->l_remote_handle;
ldlm_lock2desc(lock, &body->lock_desc);
lock_res_and_lock(lock);
- size[REPLY_REC_OFF] = lock->l_resource->lr_lvb_len;
+ req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
+ lock->l_resource->lr_lvb_len);
unlock_res_and_lock(lock);
res = lock->l_resource;
- ptlrpc_req_set_repsize(req, 2, size);
+ ptlrpc_request_set_replen(req);
+
req->rq_send_state = LUSTRE_IMP_FULL;
- req->rq_timeout = ldlm_get_rq_timeout(ldlm_timeout, obd_timeout);
+ /* ptlrpc_request_alloc_pack already set timeout */
+ if (AT_OFF)
+ req->rq_timeout = ldlm_get_rq_timeout();
- if (lock->l_export && lock->l_export->exp_ldlm_stats)
- lprocfs_counter_incr(lock->l_export->exp_ldlm_stats,
+ if (lock->l_export && lock->l_export->exp_nid_stats &&
+ lock->l_export->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(lock->l_export->exp_nid_stats->nid_ldlm_stats,
LDLM_GL_CALLBACK - LDLM_FIRST_OPC);
rc = ptlrpc_queue_wait(req);
else if (rc != 0)
rc = ldlm_handle_ast_error(lock, req, rc, "glimpse");
else
- rc = res->lr_namespace->ns_lvbo->lvbo_update
- (res, req->rq_repmsg, REPLY_REC_OFF, 1);
+ rc = ldlm_res_lvbo_update(res, req, 1);
+
ptlrpc_req_finished(req);
+ if (rc == -ERESTART)
+ ldlm_reprocess_all(res);
+
RETURN(rc);
}
-static struct ldlm_lock *
-find_existing_lock(struct obd_export *exp, struct lustre_handle *remote_hdl)
+#ifdef __KERNEL__
+extern unsigned long long lu_time_stamp_get(void);
+#else
+#define lu_time_stamp_get() time(NULL)
+#endif
+
+static void ldlm_svc_get_eopc(const struct ldlm_request *dlm_req,
+ struct lprocfs_stats *srv_stats)
{
- struct list_head *iter;
+ int lock_type = 0, op = 0;
- spin_lock(&exp->exp_ldlm_data.led_lock);
- list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
- struct ldlm_lock *lock;
- lock = list_entry(iter, struct ldlm_lock, l_export_chain);
- if (lock->l_remote_handle.cookie == remote_hdl->cookie) {
- LDLM_LOCK_GET(lock);
- spin_unlock(&exp->exp_ldlm_data.led_lock);
- return lock;
- }
+ lock_type = dlm_req->lock_desc.l_resource.lr_type;
+
+ switch (lock_type) {
+ case LDLM_PLAIN:
+ op = PTLRPC_LAST_CNTR + LDLM_PLAIN_ENQUEUE;
+ break;
+ case LDLM_EXTENT:
+ if (dlm_req->lock_flags & LDLM_FL_HAS_INTENT)
+ op = PTLRPC_LAST_CNTR + LDLM_GLIMPSE_ENQUEUE;
+ else
+ op = PTLRPC_LAST_CNTR + LDLM_EXTENT_ENQUEUE;
+ break;
+ case LDLM_FLOCK:
+ op = PTLRPC_LAST_CNTR + LDLM_FLOCK_ENQUEUE;
+ break;
+ case LDLM_IBITS:
+ op = PTLRPC_LAST_CNTR + LDLM_IBITS_ENQUEUE;
+ break;
+ default:
+ op = 0;
+ break;
}
- spin_unlock(&exp->exp_ldlm_data.led_lock);
- return NULL;
-}
+ if (op)
+ lprocfs_counter_incr(srv_stats, op);
+
+ return;
+}
/*
* Main server-side entry point into LDLM. This is called by ptlrpc service
* threads to carry out client lock enqueueing requests.
*/
-int ldlm_handle_enqueue(struct ptlrpc_request *req,
- ldlm_completion_callback completion_callback,
- ldlm_blocking_callback blocking_callback,
- ldlm_glimpse_callback glimpse_callback)
+int ldlm_handle_enqueue0(struct ldlm_namespace *ns,
+ struct ptlrpc_request *req,
+ const struct ldlm_request *dlm_req,
+ const struct ldlm_callback_suite *cbs)
{
- struct obd_device *obddev = req->rq_export->exp_obd;
struct ldlm_reply *dlm_rep;
- struct ldlm_request *dlm_req;
- int size[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREPLY_OFF] = sizeof(*dlm_rep) };
- int rc = 0;
__u32 flags;
ldlm_error_t err = ELDLM_OK;
struct ldlm_lock *lock = NULL;
void *cookie = NULL;
+ int rc = 0;
ENTRY;
LDLM_DEBUG_NOLOCK("server-side enqueue handler START");
- dlm_req = lustre_swab_reqbuf(req, DLM_LOCKREQ_OFF, sizeof(*dlm_req),
- lustre_swab_ldlm_request);
- if (dlm_req == NULL) {
- CERROR ("Can't unpack dlm_req\n");
- GOTO(out, rc = -EFAULT);
- }
-
+ ldlm_request_cancel(req, dlm_req, LDLM_ENQUEUE_CANCEL_OFF);
flags = dlm_req->lock_flags;
LASSERT(req->rq_export);
-
- if (req->rq_export->exp_ldlm_stats)
- lprocfs_counter_incr(req->rq_export->exp_ldlm_stats,
+
+ if (req->rq_rqbd->rqbd_service->srv_stats)
+ ldlm_svc_get_eopc(dlm_req,
+ req->rq_rqbd->rqbd_service->srv_stats);
+
+ if (req->rq_export && req->rq_export->exp_nid_stats &&
+ req->rq_export->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(req->rq_export->exp_nid_stats->nid_ldlm_stats,
LDLM_ENQUEUE - LDLM_FIRST_OPC);
- if (dlm_req->lock_desc.l_resource.lr_type < LDLM_MIN_TYPE ||
- dlm_req->lock_desc.l_resource.lr_type >= LDLM_MAX_TYPE) {
- DEBUG_REQ(D_ERROR, req, "invalid lock request type %d\n",
+ if (unlikely(dlm_req->lock_desc.l_resource.lr_type < LDLM_MIN_TYPE ||
+ dlm_req->lock_desc.l_resource.lr_type >= LDLM_MAX_TYPE)) {
+ DEBUG_REQ(D_ERROR, req, "invalid lock request type %d",
dlm_req->lock_desc.l_resource.lr_type);
GOTO(out, rc = -EFAULT);
}
- if (dlm_req->lock_desc.l_req_mode <= LCK_MINMODE ||
- dlm_req->lock_desc.l_req_mode >= LCK_MAXMODE ||
- dlm_req->lock_desc.l_req_mode & (dlm_req->lock_desc.l_req_mode-1)) {
- DEBUG_REQ(D_ERROR, req, "invalid lock request mode %d\n",
+ if (unlikely(dlm_req->lock_desc.l_req_mode <= LCK_MINMODE ||
+ dlm_req->lock_desc.l_req_mode >= LCK_MAXMODE ||
+ dlm_req->lock_desc.l_req_mode &
+ (dlm_req->lock_desc.l_req_mode-1))) {
+ DEBUG_REQ(D_ERROR, req, "invalid lock request mode %d",
dlm_req->lock_desc.l_req_mode);
GOTO(out, rc = -EFAULT);
}
if (req->rq_export->exp_connect_flags & OBD_CONNECT_IBITS) {
- if (dlm_req->lock_desc.l_resource.lr_type == LDLM_PLAIN) {
+ if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
+ LDLM_PLAIN)) {
DEBUG_REQ(D_ERROR, req,
- "PLAIN lock request from IBITS client?\n");
+ "PLAIN lock request from IBITS client?");
GOTO(out, rc = -EPROTO);
}
- } else if (dlm_req->lock_desc.l_resource.lr_type == LDLM_IBITS) {
+ } else if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
+ LDLM_IBITS)) {
DEBUG_REQ(D_ERROR, req,
- "IBITS lock request from unaware client?\n");
+ "IBITS lock request from unaware client?");
GOTO(out, rc = -EPROTO);
}
#if 0
- /* FIXME this makes it impossible to use LDLM_PLAIN locks -- check
+ /* FIXME this makes it impossible to use LDLM_PLAIN locks -- check
against server's _CONNECT_SUPPORTED flags? (I don't want to use
ibits for mgc/mgs) */
}
#endif
- if (flags & LDLM_FL_REPLAY) {
- lock = find_existing_lock(req->rq_export,
- &dlm_req->lock_handle1);
+ if (unlikely(flags & LDLM_FL_REPLAY)) {
+ /* Find an existing lock in the per-export lock hash */
+ lock = cfs_hash_lookup(req->rq_export->exp_lock_hash,
+ (void *)&dlm_req->lock_handle[0]);
if (lock != NULL) {
- DEBUG_REQ(D_HA, req, "found existing lock cookie "LPX64,
- lock->l_handle.h_cookie);
+ DEBUG_REQ(D_DLMTRACE, req, "found existing lock cookie "
+ LPX64, lock->l_handle.h_cookie);
GOTO(existing_lock, rc = 0);
}
}
/* The lock's callback data might be set in the policy function */
- lock = ldlm_lock_create(obddev->obd_namespace, &dlm_req->lock_handle2,
- dlm_req->lock_desc.l_resource.lr_name,
+ lock = ldlm_lock_create(ns, &dlm_req->lock_desc.l_resource.lr_name,
dlm_req->lock_desc.l_resource.lr_type,
dlm_req->lock_desc.l_req_mode,
- blocking_callback, completion_callback,
- glimpse_callback, NULL, 0);
+ cbs, NULL, 0);
+
if (!lock)
GOTO(out, rc = -ENOMEM);
- do_gettimeofday(&lock->l_enqueued_time);
- lock->l_remote_handle = dlm_req->lock_handle1;
+ lock->l_last_activity = cfs_time_current_sec();
+ lock->l_remote_handle = dlm_req->lock_handle[0];
LDLM_DEBUG(lock, "server-side enqueue handler, new lock created");
OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_BLOCKED, obd_timeout * 2);
LDLM_ERROR(lock, "lock on destroyed export %p", req->rq_export);
GOTO(out, rc = -ENOTCONN);
}
- lock->l_export = class_export_get(req->rq_export);
- spin_lock(&lock->l_export->exp_ldlm_data.led_lock);
- list_add(&lock->l_export_chain,
- &lock->l_export->exp_ldlm_data.led_held_locks);
- spin_unlock(&lock->l_export->exp_ldlm_data.led_lock);
+
+ lock->l_export = class_export_lock_get(req->rq_export, lock);
+ if (lock->l_export->exp_lock_hash)
+ cfs_hash_add(lock->l_export->exp_lock_hash,
+ &lock->l_remote_handle,
+ &lock->l_exp_hash);
existing_lock:
* local_lock_enqueue by the policy function. */
cookie = req;
} else {
- int buffers = 2;
-
lock_res_and_lock(lock);
if (lock->l_resource->lr_lvb_len) {
- size[DLM_REPLY_REC_OFF] = lock->l_resource->lr_lvb_len;
- buffers = 3;
+ req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB,
+ RCL_SERVER,
+ lock->l_resource->lr_lvb_len);
}
unlock_res_and_lock(lock);
- if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR))
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR))
GOTO(out, rc = -ENOMEM);
- rc = lustre_pack_reply(req, buffers, size, NULL);
+ rc = req_capsule_server_pack(&req->rq_pill);
if (rc)
GOTO(out, rc);
}
if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT)
lock->l_req_extent = lock->l_policy_data.l_extent;
- err = ldlm_lock_enqueue(obddev->obd_namespace, &lock, cookie, &flags);
+ err = ldlm_lock_enqueue(ns, &lock, cookie, (int *)&flags);
if (err)
GOTO(out, err);
- dlm_rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
- sizeof(*dlm_rep));
+ dlm_rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
dlm_rep->lock_flags = flags;
ldlm_lock2desc(lock, &dlm_rep->lock_desc);
/* Don't move a pending lock onto the export if it has already
* been evicted. Cancel it now instead. (bug 5683) */
- if (req->rq_export->exp_failed ||
- OBD_FAIL_CHECK_ONCE(OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT)) {
+ if (unlikely(req->rq_export->exp_failed ||
+ OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT))) {
LDLM_ERROR(lock, "lock on destroyed export %p", req->rq_export);
rc = -ENOTCONN;
} else if (lock->l_flags & LDLM_FL_AST_SENT) {
dlm_rep->lock_flags |= LDLM_FL_AST_SENT;
if (lock->l_granted_mode == lock->l_req_mode) {
- /* Only cancel lock if it was granted, because it
- * would be destroyed immediatelly and would never
- * be granted in the future, causing timeouts on client.
- * Not granted lock will be cancelled immediatelly after
+ /*
+ * Only cancel lock if it was granted, because it would
+ * be destroyed immediately and would never be granted
+ * in the future, causing timeouts on client. Not
+ * granted lock will be cancelled immediately after
* sending completion AST.
*/
if (dlm_rep->lock_flags & LDLM_FL_CANCEL_ON_BLOCK) {
unlock_res_and_lock(lock);
ldlm_lock_cancel(lock);
lock_res_and_lock(lock);
- } else if (lock->l_granted_mode == lock->l_req_mode)
+ } else
ldlm_add_waiting_lock(lock);
}
}
if ((dlm_req->lock_desc.l_resource.lr_type == LDLM_PLAIN ||
dlm_req->lock_desc.l_resource.lr_type == LDLM_IBITS) &&
req->rq_export->exp_libclient) {
- if (!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK) ||
- !(dlm_rep->lock_flags & LDLM_FL_CANCEL_ON_BLOCK)) {
+ if (unlikely(!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK) ||
+ !(dlm_rep->lock_flags & LDLM_FL_CANCEL_ON_BLOCK))){
CERROR("Granting sync lock to libclient. "
- "req fl %d, rep fl %d, lock fl %d\n",
+ "req fl %d, rep fl %d, lock fl "LPX64"\n",
dlm_req->lock_flags, dlm_rep->lock_flags,
lock->l_flags);
LDLM_ERROR(lock, "sync lock");
if (dlm_req->lock_flags & LDLM_FL_HAS_INTENT) {
struct ldlm_intent *it;
- it = lustre_msg_buf(req->rq_reqmsg,
- DLM_INTENT_IT_OFF,
- sizeof(*it));
+
+ it = req_capsule_client_get(&req->rq_pill,
+ &RMF_LDLM_INTENT);
if (it != NULL) {
CERROR("This is intent %s ("LPU64")\n",
ldlm_it2str(it->opc), it->opc);
EXIT;
out:
- req->rq_status = err;
- if (req->rq_reply_state == NULL) {
+ req->rq_status = rc ?: err; /* return either error - bug 11190 */
+ if (!req->rq_packed_final) {
err = lustre_pack_reply(req, 1, NULL, NULL);
if (rc == 0)
rc = err;
- req->rq_status = rc;
}
/* The LOCK_CHANGED code in ldlm_lock_enqueue depends on this
LDLM_DEBUG(lock, "server-side enqueue handler, sending reply"
"(err=%d, rc=%d)", err, rc);
+ lock_res_and_lock(lock);
if (rc == 0) {
- lock_res_and_lock(lock);
- size[DLM_REPLY_REC_OFF] = lock->l_resource->lr_lvb_len;
- if (size[DLM_REPLY_REC_OFF] > 0) {
- void *lvb = lustre_msg_buf(req->rq_repmsg,
- DLM_REPLY_REC_OFF,
- size[DLM_REPLY_REC_OFF]);
+ if (lock->l_resource->lr_lvb_len > 0) {
+ void *lvb;
+
+ lvb = req_capsule_server_get(&req->rq_pill,
+ &RMF_DLM_LVB);
LASSERTF(lvb != NULL, "req %p, lock %p\n",
req, lock);
memcpy(lvb, lock->l_resource->lr_lvb_data,
- size[DLM_REPLY_REC_OFF]);
+ lock->l_resource->lr_lvb_len);
}
- unlock_res_and_lock(lock);
} else {
- lock_res_and_lock(lock);
ldlm_resource_unlink_lock(lock);
ldlm_lock_destroy_nolock(lock);
- unlock_res_and_lock(lock);
}
+ unlock_res_and_lock(lock);
if (!err && dlm_req->lock_desc.l_resource.lr_type != LDLM_FLOCK)
ldlm_reprocess_all(lock->l_resource);
- LDLM_LOCK_PUT(lock);
+ LDLM_LOCK_RELEASE(lock);
}
LDLM_DEBUG_NOLOCK("server-side enqueue handler END (lock %p, rc %d)",
return rc;
}
-int ldlm_handle_convert(struct ptlrpc_request *req)
+int ldlm_handle_enqueue(struct ptlrpc_request *req,
+ ldlm_completion_callback completion_callback,
+ ldlm_blocking_callback blocking_callback,
+ ldlm_glimpse_callback glimpse_callback)
{
struct ldlm_request *dlm_req;
+ struct ldlm_callback_suite cbs = {
+ .lcs_completion = completion_callback,
+ .lcs_blocking = blocking_callback,
+ .lcs_glimpse = glimpse_callback
+ };
+ int rc;
+
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ if (dlm_req != NULL) {
+ rc = ldlm_handle_enqueue0(req->rq_export->exp_obd->obd_namespace,
+ req, dlm_req, &cbs);
+ } else {
+ rc = -EFAULT;
+ }
+ return rc;
+}
+
+int ldlm_handle_convert0(struct ptlrpc_request *req,
+ const struct ldlm_request *dlm_req)
+{
struct ldlm_reply *dlm_rep;
struct ldlm_lock *lock;
int rc;
- int size[2] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREPLY_OFF] = sizeof(*dlm_rep) };
ENTRY;
- dlm_req = lustre_swab_reqbuf(req, DLM_LOCKREQ_OFF, sizeof(*dlm_req),
- lustre_swab_ldlm_request);
- if (dlm_req == NULL) {
- CERROR ("Can't unpack dlm_req\n");
- RETURN (-EFAULT);
- }
-
- if (req->rq_export && req->rq_export->exp_ldlm_stats)
- lprocfs_counter_incr(req->rq_export->exp_ldlm_stats,
+ if (req->rq_export && req->rq_export->exp_nid_stats &&
+ req->rq_export->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(req->rq_export->exp_nid_stats->nid_ldlm_stats,
LDLM_CONVERT - LDLM_FIRST_OPC);
- rc = lustre_pack_reply(req, 2, size, NULL);
- if (rc) {
- CERROR("out of memory\n");
- RETURN(-ENOMEM);
- }
- dlm_rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
- sizeof(*dlm_rep));
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(rc);
+
+ dlm_rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
dlm_rep->lock_flags = dlm_req->lock_flags;
- lock = ldlm_handle2lock(&dlm_req->lock_handle1);
+ lock = ldlm_handle2lock(&dlm_req->lock_handle[0]);
if (!lock) {
req->rq_status = EINVAL;
} else {
LDLM_DEBUG(lock, "server-side convert handler START");
- do_gettimeofday(&lock->l_enqueued_time);
+ lock->l_last_activity = cfs_time_current_sec();
res = ldlm_lock_convert(lock, dlm_req->lock_desc.l_req_mode,
&dlm_rep->lock_flags);
if (res) {
RETURN(0);
}
-int ldlm_handle_cancel(struct ptlrpc_request *req)
+int ldlm_handle_convert(struct ptlrpc_request *req)
{
+ int rc;
struct ldlm_request *dlm_req;
+
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ if (dlm_req != NULL) {
+ rc = ldlm_handle_convert0(req, dlm_req);
+ } else {
+ CERROR ("Can't unpack dlm_req\n");
+ rc = -EFAULT;
+ }
+ return rc;
+}
+
+/* Cancel all the locks whos handles are packed into ldlm_request */
+int ldlm_request_cancel(struct ptlrpc_request *req,
+ const struct ldlm_request *dlm_req, int first)
+{
+ struct ldlm_resource *res, *pres = NULL;
struct ldlm_lock *lock;
- struct ldlm_resource *res;
+ int i, count, done = 0;
+ ENTRY;
+
+ count = dlm_req->lock_count ? dlm_req->lock_count : 1;
+ if (first >= count)
+ RETURN(0);
+
+ /* There is no lock on the server at the replay time,
+ * skip lock cancelling to make replay tests to pass. */
+ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
+ RETURN(0);
+
+ LDLM_DEBUG_NOLOCK("server-side cancel handler START: %d locks, "
+ "starting at %d", count, first);
+
+ for (i = first; i < count; i++) {
+ lock = ldlm_handle2lock(&dlm_req->lock_handle[i]);
+ if (!lock) {
+ LDLM_DEBUG_NOLOCK("server-side cancel handler stale "
+ "lock (cookie "LPU64")",
+ dlm_req->lock_handle[i].cookie);
+ continue;
+ }
+
+ res = lock->l_resource;
+ done++;
+
+ if (res != pres) {
+ if (pres != NULL) {
+ ldlm_reprocess_all(pres);
+ LDLM_RESOURCE_DELREF(pres);
+ ldlm_resource_putref(pres);
+ }
+ if (res != NULL) {
+ ldlm_resource_getref(res);
+ LDLM_RESOURCE_ADDREF(res);
+ ldlm_res_lvbo_update(res, NULL, 1);
+ }
+ pres = res;
+ }
+ ldlm_lock_cancel(lock);
+ LDLM_LOCK_PUT(lock);
+ }
+ if (pres != NULL) {
+ ldlm_reprocess_all(pres);
+ LDLM_RESOURCE_DELREF(pres);
+ ldlm_resource_putref(pres);
+ }
+ LDLM_DEBUG_NOLOCK("server-side cancel handler END");
+ RETURN(done);
+}
+
+int ldlm_handle_cancel(struct ptlrpc_request *req)
+{
+ struct ldlm_request *dlm_req;
int rc;
ENTRY;
- dlm_req = lustre_swab_reqbuf(req, DLM_LOCKREQ_OFF, sizeof(*dlm_req),
- lustre_swab_ldlm_request);
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
if (dlm_req == NULL) {
- CERROR("bad request buffer for cancel\n");
+ CDEBUG(D_INFO, "bad request buffer for cancel\n");
RETURN(-EFAULT);
}
- if (req->rq_export && req->rq_export->exp_ldlm_stats)
- lprocfs_counter_incr(req->rq_export->exp_ldlm_stats,
+ if (req->rq_export && req->rq_export->exp_nid_stats &&
+ req->rq_export->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(req->rq_export->exp_nid_stats->nid_ldlm_stats,
LDLM_CANCEL - LDLM_FIRST_OPC);
- rc = lustre_pack_reply(req, 1, NULL, NULL);
- if (rc) {
- CERROR("out of memory\n");
- RETURN(-ENOMEM);
- }
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(rc);
- lock = ldlm_handle2lock(&dlm_req->lock_handle1);
- if (!lock) {
- CERROR("received cancel for unknown lock cookie "LPX64
- " from client %s id %s\n",
- dlm_req->lock_handle1.cookie,
- req->rq_export->exp_client_uuid.uuid,
- libcfs_id2str(req->rq_peer));
- LDLM_DEBUG_NOLOCK("server-side cancel handler stale lock "
- "(cookie "LPU64")",
- dlm_req->lock_handle1.cookie);
+ if (!ldlm_request_cancel(req, dlm_req, 0))
req->rq_status = ESTALE;
- } else {
- LDLM_DEBUG(lock, "server-side cancel handler START");
- res = lock->l_resource;
- if (res && res->lr_namespace->ns_lvbo &&
- res->lr_namespace->ns_lvbo->lvbo_update) {
- (void)res->lr_namespace->ns_lvbo->lvbo_update
- (res, NULL, 0, 1);
- //(res, req->rq_reqmsg, 1, 1);
- }
-
- ldlm_lock_cancel(lock);
- req->rq_status = rc;
- }
if (ptlrpc_reply(req) != 0)
LBUG();
- if (lock) {
- ldlm_reprocess_all(lock->l_resource);
- LDLM_DEBUG(lock, "server-side cancel handler END");
- LDLM_LOCK_PUT(lock);
- }
-
RETURN(0);
}
int do_ast;
ENTRY;
- LDLM_DEBUG(lock, "client blocking AST callback handler START");
+ LDLM_DEBUG(lock, "client blocking AST callback handler");
lock_res_and_lock(lock);
lock->l_flags |= LDLM_FL_CBPENDING;
unlock_res_and_lock(lock);
if (do_ast) {
- LDLM_DEBUG(lock, "already unused, calling "
- "callback (%p)", lock->l_blocking_ast);
+ CDEBUG(D_DLMTRACE, "Lock %p already unused, calling callback (%p)\n",
+ lock, lock->l_blocking_ast);
if (lock->l_blocking_ast != NULL)
lock->l_blocking_ast(lock, ld, lock->l_ast_data,
LDLM_CB_BLOCKING);
} else {
- LDLM_DEBUG(lock, "Lock still has references, will be"
- " cancelled later");
+ CDEBUG(D_DLMTRACE, "Lock %p is referenced, will be cancelled later\n",
+ lock);
}
LDLM_DEBUG(lock, "client blocking callback handler END");
- LDLM_LOCK_PUT(lock);
+ LDLM_LOCK_RELEASE(lock);
EXIT;
}
LDLM_DEBUG(lock, "client completion callback handler START");
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL_BL_CB_RACE)) {
+ int to = cfs_time_seconds(1);
+ while (to > 0) {
+ cfs_schedule_timeout_and_set_state(
+ CFS_TASK_INTERRUPTIBLE, to);
+ if (lock->l_granted_mode == lock->l_req_mode ||
+ lock->l_destroyed)
+ break;
+ }
+ }
+
lock_res_and_lock(lock);
+ if (lock->l_destroyed ||
+ lock->l_granted_mode == lock->l_req_mode) {
+ /* bug 11300: the lock has already been granted */
+ unlock_res_and_lock(lock);
+ LDLM_DEBUG(lock, "Double grant race happened");
+ LDLM_LOCK_RELEASE(lock);
+ EXIT;
+ return;
+ }
/* If we receive the completion AST before the actual enqueue returned,
* then we might need to switch lock modes, resources, or extents. */
&lock->l_resource->lr_name,
sizeof(lock->l_resource->lr_name)) != 0) {
unlock_res_and_lock(lock);
- ldlm_lock_change_resource(ns, lock,
- dlm_req->lock_desc.l_resource.lr_name);
+ if (ldlm_lock_change_resource(ns, lock,
+ &dlm_req->lock_desc.l_resource.lr_name) != 0) {
+ LDLM_ERROR(lock, "Failed to allocate resource");
+ LDLM_LOCK_RELEASE(lock);
+ EXIT;
+ return;
+ }
LDLM_DEBUG(lock, "completion AST, new resource");
CERROR("change resource!\n");
lock_res_and_lock(lock);
}
if (dlm_req->lock_flags & LDLM_FL_AST_SENT) {
- lock->l_flags |= LDLM_FL_CBPENDING;
+ /* BL_AST locks are not needed in lru.
+ * let ldlm_cancel_lru() be fast. */
+ ldlm_lock_remove_from_lru(lock);
+ lock->l_flags |= LDLM_FL_CBPENDING | LDLM_FL_BL_AST;
LDLM_DEBUG(lock, "completion AST includes blocking AST");
}
if (lock->l_lvb_len) {
- void *lvb;
- lvb = lustre_swab_reqbuf(req, DLM_REQ_REC_OFF, lock->l_lvb_len,
- lock->l_lvb_swabber);
- if (lvb == NULL) {
+ if (req_capsule_get_size(&req->rq_pill, &RMF_DLM_LVB,
+ RCL_CLIENT) < lock->l_lvb_len) {
LDLM_ERROR(lock, "completion AST did not contain "
"expected LVB!");
} else {
+ void *lvb = req_capsule_client_get(&req->rq_pill,
+ &RMF_DLM_LVB);
memcpy(lock->l_lvb_data, lvb, lock->l_lvb_len);
}
}
LDLM_DEBUG(lock, "callback handler finished, about to run_ast_work");
- ldlm_run_cp_ast_work(&ast_list);
+ ldlm_run_ast_work(&ast_list, LDLM_WORK_CP_AST);
LDLM_DEBUG_NOLOCK("client completion callback handler END (lock %p)",
lock);
- LDLM_LOCK_PUT(lock);
+ LDLM_LOCK_RELEASE(lock);
EXIT;
}
lock_res_and_lock(lock);
if (lock->l_granted_mode == LCK_PW &&
!lock->l_readers && !lock->l_writers &&
- cfs_time_after(cfs_time_current(),
- cfs_time_add(lock->l_last_used, cfs_time_seconds(10)))) {
+ cfs_time_after(cfs_time_current(),
+ cfs_time_add(lock->l_last_used,
+ cfs_time_seconds(10)))) {
unlock_res_and_lock(lock);
- if (ldlm_bl_to_thread(ns, NULL, lock))
+ if (ldlm_bl_to_thread_lock(ns, NULL, lock))
ldlm_handle_bl_callback(ns, NULL, lock);
EXIT;
return;
}
unlock_res_and_lock(lock);
- LDLM_LOCK_PUT(lock);
+ LDLM_LOCK_RELEASE(lock);
EXIT;
}
static int ldlm_callback_reply(struct ptlrpc_request *req, int rc)
{
+ if (req->rq_no_reply)
+ return 0;
+
req->rq_status = rc;
- if (req->rq_reply_state == NULL) {
+ if (!req->rq_packed_final) {
rc = lustre_pack_reply(req, 1, NULL, NULL);
if (rc)
return rc;
return ptlrpc_reply(req);
}
-int ldlm_bl_to_thread(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
- struct ldlm_lock *lock)
-{
#ifdef __KERNEL__
+static int __ldlm_bl_to_thread(struct ldlm_namespace *ns, struct ldlm_bl_work_item *blwi,
+ struct ldlm_lock_desc *ld, struct ldlm_lock *lock,
+ cfs_list_t *cancels, int count, int mode)
+{
struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
- struct ldlm_bl_work_item *blwi;
ENTRY;
- OBD_ALLOC(blwi, sizeof(*blwi));
- if (blwi == NULL)
- RETURN(-ENOMEM);
+ if (cancels && count == 0) {
+ if (mode == LDLM_ASYNC)
+ OBD_FREE(blwi, sizeof(*blwi));
+ RETURN(0);
+ }
+
+ cfs_init_completion(&blwi->blwi_comp);
+ cfs_atomic_set(&blwi->blwi_ref_count, 1);
blwi->blwi_ns = ns;
if (ld != NULL)
blwi->blwi_ld = *ld;
- blwi->blwi_lock = lock;
+ if (count) {
+ cfs_list_add(&blwi->blwi_head, cancels);
+ cfs_list_del_init(cancels);
+ blwi->blwi_count = count;
+ } else {
+ blwi->blwi_lock = lock;
+ }
+
+ cfs_spin_lock(&blp->blp_lock);
+ if (lock && lock->l_flags & LDLM_FL_DISCARD_DATA) {
+ /* add LDLM_FL_DISCARD_DATA requests to the priority list */
+ cfs_list_add_tail(&blwi->blwi_entry, &blp->blp_prio_list);
+ } else {
+ /* other blocking callbacks are added to the regular list */
+ cfs_list_add_tail(&blwi->blwi_entry, &blp->blp_list);
+ }
+ cfs_spin_unlock(&blp->blp_lock);
- spin_lock(&blp->blp_lock);
- list_add_tail(&blwi->blwi_entry, &blp->blp_list);
- cfs_waitq_signal(&blp->blp_waitq);
- spin_unlock(&blp->blp_lock);
+ if (mode == LDLM_SYNC) {
+ /* keep ref count as object is on this stack for SYNC call */
+ ldlm_bl_work_item_get(blwi);
+ cfs_waitq_signal(&blp->blp_waitq);
+ cfs_wait_for_completion(&blwi->blwi_comp);
+ } else {
+ cfs_waitq_signal(&blp->blp_waitq);
+ }
RETURN(0);
+}
+
+static int ldlm_bl_to_thread(struct ldlm_namespace *ns,
+ struct ldlm_lock_desc *ld, struct ldlm_lock *lock,
+ struct list_head *cancels, int count, int mode)
+{
+ ENTRY;
+
+ if (mode == LDLM_SYNC) {
+ /* if it is synchronous call do minimum mem alloc, as it could
+ * be triggered from kernel shrinker
+ */
+ struct ldlm_bl_work_item blwi;
+ memset(&blwi, 0, sizeof(blwi));
+ /* have extra ref as this obj is on stack */
+ RETURN(__ldlm_bl_to_thread(ns, &blwi, ld, lock, cancels, count, mode));
+ } else {
+ struct ldlm_bl_work_item *blwi;
+ OBD_ALLOC(blwi, sizeof(*blwi));
+ if (blwi == NULL)
+ RETURN(-ENOMEM);
+
+ RETURN(__ldlm_bl_to_thread(ns, blwi, ld, lock, cancels, count, mode));
+ }
+}
+
+#endif
+
+int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
+ struct ldlm_lock *lock)
+{
+#ifdef __KERNEL__
+ RETURN(ldlm_bl_to_thread(ns, ld, lock, NULL, 0, LDLM_ASYNC));
+#else
+ RETURN(-ENOSYS);
+#endif
+}
+
+int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
+ cfs_list_t *cancels, int count, int mode)
+{
+#ifdef __KERNEL__
+ RETURN(ldlm_bl_to_thread(ns, ld, NULL, cancels, count, mode));
#else
RETURN(-ENOSYS);
#endif
}
+/* Setinfo coming from Server (eg MDT) to Client (eg MDC)! */
+static int ldlm_handle_setinfo(struct ptlrpc_request *req)
+{
+ struct obd_device *obd = req->rq_export->exp_obd;
+ char *key;
+ void *val;
+ int keylen, vallen;
+ int rc = -ENOSYS;
+ ENTRY;
+
+ DEBUG_REQ(D_HSM, req, "%s: handle setinfo\n", obd->obd_name);
+
+ req_capsule_set(&req->rq_pill, &RQF_OBD_SET_INFO);
+
+ key = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
+ if (key == NULL) {
+ DEBUG_REQ(D_IOCTL, req, "no set_info key");
+ RETURN(-EFAULT);
+ }
+ keylen = req_capsule_get_size(&req->rq_pill, &RMF_SETINFO_KEY,
+ RCL_CLIENT);
+ val = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
+ if (val == NULL) {
+ DEBUG_REQ(D_IOCTL, req, "no set_info val");
+ RETURN(-EFAULT);
+ }
+ vallen = req_capsule_get_size(&req->rq_pill, &RMF_SETINFO_VAL,
+ RCL_CLIENT);
+
+ /* We are responsible for swabbing contents of val */
+
+ if (KEY_IS(KEY_HSM_COPYTOOL_SEND))
+ /* Pass it on to mdc (the "export" in this case) */
+ rc = obd_set_info_async(req->rq_export,
+ sizeof(KEY_HSM_COPYTOOL_SEND),
+ KEY_HSM_COPYTOOL_SEND,
+ vallen, val, NULL);
+ else
+ DEBUG_REQ(D_WARNING, req, "ignoring unknown key %s", key);
+
+ return rc;
+}
+
+static inline void ldlm_callback_errmsg(struct ptlrpc_request *req,
+ const char *msg, int rc,
+ struct lustre_handle *handle)
+{
+ CWARN("%s: [pid %d] [xid x"LPU64"] [nid %s] [opc %d] [rc %d] "
+ "[lock "LPX64"].\n",
+ msg, lustre_msg_get_status(req->rq_reqmsg),
+ req->rq_xid, libcfs_id2str(req->rq_peer),
+ lustre_msg_get_opc(req->rq_reqmsg), rc,
+ handle ? handle->cookie : 0);
+ if (req->rq_no_reply)
+ CWARN("No reply was sent, maybe cause bug 21636.\n");
+ else if (rc)
+ CWARN("Send reply failed, maybe cause bug 21636.\n");
+}
+
+/* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
static int ldlm_callback_handler(struct ptlrpc_request *req)
{
struct ldlm_namespace *ns;
* incoming request message body, but I am responsible for the
* message buffers. */
- if (req->rq_export == NULL) {
- struct ldlm_request *dlm_req;
-
- CDEBUG(D_RPCTRACE, "operation %d from %s with bad "
- "export cookie "LPX64"; this is "
- "normal if this node rebooted with a lock held\n",
- lustre_msg_get_opc(req->rq_reqmsg),
- libcfs_id2str(req->rq_peer),
- lustre_msg_get_handle(req->rq_reqmsg)->cookie);
+ /* do nothing for sec context finalize */
+ if (lustre_msg_get_opc(req->rq_reqmsg) == SEC_CTX_FINI)
+ RETURN(0);
- dlm_req = lustre_swab_reqbuf(req, DLM_LOCKREQ_OFF,
- sizeof(*dlm_req),
- lustre_swab_ldlm_request);
- if (dlm_req != NULL)
- CDEBUG(D_RPCTRACE, "--> lock cookie: "LPX64"\n",
- dlm_req->lock_handle1.cookie);
+ req_capsule_init(&req->rq_pill, req, RCL_SERVER);
- ldlm_callback_reply(req, -ENOTCONN);
+ if (req->rq_export == NULL) {
+ rc = ldlm_callback_reply(req, -ENOTCONN);
+ ldlm_callback_errmsg(req, "Operate on unconnected server",
+ rc, NULL);
RETURN(0);
}
switch (lustre_msg_get_opc(req->rq_reqmsg)) {
case LDLM_BL_CALLBACK:
- OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK))
+ RETURN(0);
break;
case LDLM_CP_CALLBACK:
- OBD_FAIL_RETURN(OBD_FAIL_LDLM_CP_CALLBACK, 0);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CP_CALLBACK))
+ RETURN(0);
break;
case LDLM_GL_CALLBACK:
- OBD_FAIL_RETURN(OBD_FAIL_LDLM_GL_CALLBACK, 0);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_GL_CALLBACK))
+ RETURN(0);
break;
+ case LDLM_SET_INFO:
+ rc = ldlm_handle_setinfo(req);
+ ldlm_callback_reply(req, rc);
+ RETURN(0);
case OBD_LOG_CANCEL: /* remove this eventually - for 1.4.0 compat */
- OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
+ CERROR("shouldn't be handling OBD_LOG_CANCEL on DLM thread\n");
+ req_capsule_set(&req->rq_pill, &RQF_LOG_CANCEL);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOG_CANCEL_NET))
+ RETURN(0);
rc = llog_origin_handle_cancel(req);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOG_CANCEL_REP))
+ RETURN(0);
ldlm_callback_reply(req, rc);
RETURN(0);
case OBD_QC_CALLBACK:
- OBD_FAIL_RETURN(OBD_FAIL_OBD_QC_CALLBACK_NET, 0);
+ req_capsule_set(&req->rq_pill, &RQF_QC_CALLBACK);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_QC_CALLBACK_NET))
+ RETURN(0);
rc = target_handle_qc_callback(req);
ldlm_callback_reply(req, rc);
RETURN(0);
case QUOTA_DQACQ:
case QUOTA_DQREL:
/* reply in handler */
+ req_capsule_set(&req->rq_pill, &RQF_MDS_QUOTA_DQACQ);
rc = target_handle_dqacq_callback(req);
RETURN(0);
case LLOG_ORIGIN_HANDLE_CREATE:
- OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
+ req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOGD_NET))
+ RETURN(0);
rc = llog_origin_handle_create(req);
ldlm_callback_reply(req, rc);
RETURN(0);
case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
- OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
+ req_capsule_set(&req->rq_pill,
+ &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOGD_NET))
+ RETURN(0);
rc = llog_origin_handle_next_block(req);
ldlm_callback_reply(req, rc);
RETURN(0);
case LLOG_ORIGIN_HANDLE_READ_HEADER:
- OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
+ req_capsule_set(&req->rq_pill,
+ &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOGD_NET))
+ RETURN(0);
rc = llog_origin_handle_read_header(req);
ldlm_callback_reply(req, rc);
RETURN(0);
case LLOG_ORIGIN_HANDLE_CLOSE:
- OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOGD_NET))
+ RETURN(0);
rc = llog_origin_handle_close(req);
ldlm_callback_reply(req, rc);
RETURN(0);
ns = req->rq_export->exp_obd->obd_namespace;
LASSERT(ns != NULL);
- dlm_req = lustre_swab_reqbuf(req, DLM_LOCKREQ_OFF, sizeof(*dlm_req),
- lustre_swab_ldlm_request);
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CALLBACK);
+
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
if (dlm_req == NULL) {
- CERROR ("can't unpack dlm_req\n");
- ldlm_callback_reply(req, -EPROTO);
- RETURN (0);
+ rc = ldlm_callback_reply(req, -EPROTO);
+ ldlm_callback_errmsg(req, "Operate without parameter", rc,
+ NULL);
+ RETURN(0);
+ }
+
+ /* Force a known safe race, send a cancel to the server for a lock
+ * which the server has already started a blocking callback on. */
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL_BL_CB_RACE) &&
+ lustre_msg_get_opc(req->rq_reqmsg) == LDLM_BL_CALLBACK) {
+ rc = ldlm_cli_cancel(&dlm_req->lock_handle[0]);
+ if (rc < 0)
+ CERROR("ldlm_cli_cancel: %d\n", rc);
}
- lock = ldlm_handle2lock_ns(ns, &dlm_req->lock_handle1);
+ lock = ldlm_handle2lock_long(&dlm_req->lock_handle[0], 0);
if (!lock) {
- CDEBUG(D_INODE, "callback on lock "LPX64" - lock disappeared\n",
- dlm_req->lock_handle1.cookie);
- ldlm_callback_reply(req, -EINVAL);
+ CDEBUG(D_DLMTRACE, "callback on lock "LPX64" - lock "
+ "disappeared\n", dlm_req->lock_handle[0].cookie);
+ rc = ldlm_callback_reply(req, -EINVAL);
+ ldlm_callback_errmsg(req, "Operate with invalid parameter", rc,
+ &dlm_req->lock_handle[0]);
RETURN(0);
}
+ if ((lock->l_flags & LDLM_FL_FAIL_LOC) &&
+ lustre_msg_get_opc(req->rq_reqmsg) == LDLM_BL_CALLBACK)
+ OBD_RACE(OBD_FAIL_LDLM_CP_BL_RACE);
+
/* Copy hints/flags (e.g. LDLM_FL_DISCARD_DATA) from AST. */
lock_res_and_lock(lock);
lock->l_flags |= (dlm_req->lock_flags & LDLM_AST_FLAGS);
+ if (lustre_msg_get_opc(req->rq_reqmsg) == LDLM_BL_CALLBACK) {
+ /* If somebody cancels lock and cache is already dropped,
+ * or lock is failed before cp_ast received on client,
+ * we can tell the server we have no lock. Otherwise, we
+ * should send cancel after dropping the cache. */
+ if (((lock->l_flags & LDLM_FL_CANCELING) &&
+ (lock->l_flags & LDLM_FL_BL_DONE)) ||
+ (lock->l_flags & LDLM_FL_FAILED)) {
+ LDLM_DEBUG(lock, "callback on lock "
+ LPX64" - lock disappeared\n",
+ dlm_req->lock_handle[0].cookie);
+ unlock_res_and_lock(lock);
+ LDLM_LOCK_RELEASE(lock);
+ rc = ldlm_callback_reply(req, -EINVAL);
+ ldlm_callback_errmsg(req, "Operate on stale lock", rc,
+ &dlm_req->lock_handle[0]);
+ RETURN(0);
+ }
+ /* BL_AST locks are not needed in lru.
+ * let ldlm_cancel_lru() be fast. */
+ ldlm_lock_remove_from_lru(lock);
+ lock->l_flags |= LDLM_FL_BL_AST;
+ }
unlock_res_and_lock(lock);
/* We want the ost thread to get this reply so that it can respond
switch (lustre_msg_get_opc(req->rq_reqmsg)) {
case LDLM_BL_CALLBACK:
CDEBUG(D_INODE, "blocking ast\n");
- if (!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK))
- ldlm_callback_reply(req, 0);
- if (ldlm_bl_to_thread(ns, &dlm_req->lock_desc, lock))
+ req_capsule_extend(&req->rq_pill, &RQF_LDLM_BL_CALLBACK);
+ if (!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK)) {
+ rc = ldlm_callback_reply(req, 0);
+ if (req->rq_no_reply || rc)
+ ldlm_callback_errmsg(req, "Normal process", rc,
+ &dlm_req->lock_handle[0]);
+ }
+ if (ldlm_bl_to_thread_lock(ns, &dlm_req->lock_desc, lock))
ldlm_handle_bl_callback(ns, &dlm_req->lock_desc, lock);
break;
case LDLM_CP_CALLBACK:
CDEBUG(D_INODE, "completion ast\n");
+ req_capsule_extend(&req->rq_pill, &RQF_LDLM_CP_CALLBACK);
ldlm_callback_reply(req, 0);
ldlm_handle_cp_callback(req, ns, dlm_req, lock);
break;
case LDLM_GL_CALLBACK:
CDEBUG(D_INODE, "glimpse ast\n");
+ req_capsule_extend(&req->rq_pill, &RQF_LDLM_GL_CALLBACK);
ldlm_handle_gl_callback(req, ns, dlm_req, lock);
break;
default:
* incoming request message body, but I am responsible for the
* message buffers. */
+ req_capsule_init(&req->rq_pill, req, RCL_SERVER);
+
if (req->rq_export == NULL) {
struct ldlm_request *dlm_req;
libcfs_id2str(req->rq_peer),
lustre_msg_get_handle(req->rq_reqmsg)->cookie);
- dlm_req = lustre_swab_reqbuf(req, DLM_LOCKREQ_OFF,
- sizeof(*dlm_req),
- lustre_swab_ldlm_request);
- if (dlm_req != NULL)
- ldlm_lock_dump_handle(D_ERROR, &dlm_req->lock_handle1);
-
+ if (lustre_msg_get_opc(req->rq_reqmsg) == LDLM_CANCEL) {
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CALLBACK);
+ dlm_req = req_capsule_client_get(&req->rq_pill,
+ &RMF_DLM_REQ);
+ if (dlm_req != NULL)
+ ldlm_lock_dump_handle(D_ERROR,
+ &dlm_req->lock_handle[0]);
+ }
ldlm_callback_reply(req, -ENOTCONN);
RETURN(0);
}
/* XXX FIXME move this back to mds/handler.c, bug 249 */
case LDLM_CANCEL:
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CANCEL);
CDEBUG(D_INODE, "cancel\n");
- OBD_FAIL_RETURN(OBD_FAIL_LDLM_CANCEL, 0);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL))
+ RETURN(0);
rc = ldlm_handle_cancel(req);
if (rc)
break;
RETURN(0);
case OBD_LOG_CANCEL:
- OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
+ req_capsule_set(&req->rq_pill, &RQF_LOG_CANCEL);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOG_CANCEL_NET))
+ RETURN(0);
rc = llog_origin_handle_cancel(req);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOG_CANCEL_REP))
+ RETURN(0);
ldlm_callback_reply(req, rc);
RETURN(0);
default:
CERROR("invalid opcode %d\n",
lustre_msg_get_opc(req->rq_reqmsg));
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CALLBACK);
ldlm_callback_reply(req, -EINVAL);
}
RETURN(0);
}
+void ldlm_revoke_lock_cb(void *obj, void *data)
+{
+ cfs_list_t *rpc_list = data;
+ struct ldlm_lock *lock = obj;
+
+ lock_res_and_lock(lock);
+
+ if (lock->l_req_mode != lock->l_granted_mode) {
+ unlock_res_and_lock(lock);
+ return;
+ }
+
+ LASSERT(lock->l_resource);
+ if (lock->l_resource->lr_type != LDLM_IBITS &&
+ lock->l_resource->lr_type != LDLM_PLAIN) {
+ unlock_res_and_lock(lock);
+ return;
+ }
+
+ if (lock->l_flags & LDLM_FL_AST_SENT) {
+ unlock_res_and_lock(lock);
+ return;
+ }
+
+ LASSERT(lock->l_blocking_ast);
+ LASSERT(!lock->l_blocking_lock);
+
+ lock->l_flags |= LDLM_FL_AST_SENT;
+ if (lock->l_export && lock->l_export->exp_lock_hash &&
+ !cfs_hlist_unhashed(&lock->l_exp_hash))
+ cfs_hash_del(lock->l_export->exp_lock_hash,
+ &lock->l_remote_handle, &lock->l_exp_hash);
+ cfs_list_add_tail(&lock->l_rk_ast, rpc_list);
+ LDLM_LOCK_GET(lock);
+
+ unlock_res_and_lock(lock);
+}
+
+void ldlm_revoke_export_locks(struct obd_export *exp)
+{
+ cfs_list_t rpc_list;
+ ENTRY;
+
+ CFS_INIT_LIST_HEAD(&rpc_list);
+ cfs_hash_for_each_empty(exp->exp_lock_hash,
+ ldlm_revoke_lock_cb, &rpc_list);
+ ldlm_run_ast_work(&rpc_list, LDLM_WORK_REVOKE_AST);
+
+ EXIT;
+}
+
#ifdef __KERNEL__
static struct ldlm_bl_work_item *ldlm_bl_get_work(struct ldlm_bl_pool *blp)
{
struct ldlm_bl_work_item *blwi = NULL;
+ static unsigned int num_bl = 0;
+
+ cfs_spin_lock(&blp->blp_lock);
+ /* process a request from the blp_list at least every blp_num_threads */
+ if (!cfs_list_empty(&blp->blp_list) &&
+ (cfs_list_empty(&blp->blp_prio_list) || num_bl == 0))
+ blwi = cfs_list_entry(blp->blp_list.next,
+ struct ldlm_bl_work_item, blwi_entry);
+ else
+ if (!cfs_list_empty(&blp->blp_prio_list))
+ blwi = cfs_list_entry(blp->blp_prio_list.next,
+ struct ldlm_bl_work_item,
+ blwi_entry);
- spin_lock(&blp->blp_lock);
- if (!list_empty(&blp->blp_list)) {
- blwi = list_entry(blp->blp_list.next, struct ldlm_bl_work_item,
- blwi_entry);
- list_del(&blwi->blwi_entry);
+ if (blwi) {
+ if (++num_bl >= cfs_atomic_read(&blp->blp_num_threads))
+ num_bl = 0;
+ cfs_list_del(&blwi->blwi_entry);
}
- spin_unlock(&blp->blp_lock);
+ cfs_spin_unlock(&blp->blp_lock);
return blwi;
}
+/* This only contains temporary data until the thread starts */
struct ldlm_bl_thread_data {
- int bltd_num;
+ char bltd_name[CFS_CURPROC_COMM_MAX];
struct ldlm_bl_pool *bltd_blp;
+ cfs_completion_t bltd_comp;
+ int bltd_num;
};
+static int ldlm_bl_thread_main(void *arg);
+
+static int ldlm_bl_thread_start(struct ldlm_bl_pool *blp)
+{
+ struct ldlm_bl_thread_data bltd = { .bltd_blp = blp };
+ int rc;
+
+ cfs_init_completion(&bltd.bltd_comp);
+ rc = cfs_kernel_thread(ldlm_bl_thread_main, &bltd, 0);
+ if (rc < 0) {
+ CERROR("cannot start LDLM thread ldlm_bl_%02d: rc %d\n",
+ cfs_atomic_read(&blp->blp_num_threads), rc);
+ return rc;
+ }
+ cfs_wait_for_completion(&bltd.bltd_comp);
+
+ return 0;
+}
+
static int ldlm_bl_thread_main(void *arg)
{
- struct ldlm_bl_thread_data *bltd = arg;
- struct ldlm_bl_pool *blp = bltd->bltd_blp;
+ struct ldlm_bl_pool *blp;
ENTRY;
{
- char name[CFS_CURPROC_COMM_MAX];
- snprintf(name, sizeof(name) - 1, "ldlm_bl_%02d",
- bltd->bltd_num);
- cfs_daemonize(name);
- }
+ struct ldlm_bl_thread_data *bltd = arg;
- atomic_inc(&blp->blp_num_threads);
- complete(&blp->blp_comp);
+ blp = bltd->bltd_blp;
- while(1) {
+ bltd->bltd_num =
+ cfs_atomic_inc_return(&blp->blp_num_threads) - 1;
+ cfs_atomic_inc(&blp->blp_busy_threads);
+
+ snprintf(bltd->bltd_name, sizeof(bltd->bltd_name) - 1,
+ "ldlm_bl_%02d", bltd->bltd_num);
+ cfs_daemonize(bltd->bltd_name);
+
+ cfs_complete(&bltd->bltd_comp);
+ /* cannot use bltd after this, it is only on caller's stack */
+ }
+
+ while (1) {
struct l_wait_info lwi = { 0 };
struct ldlm_bl_work_item *blwi = NULL;
- l_wait_event_exclusive(blp->blp_waitq,
- (blwi = ldlm_bl_get_work(blp)) != NULL,
- &lwi);
+ blwi = ldlm_bl_get_work(blp);
- if (blwi->blwi_ns == NULL)
- break;
+ if (blwi == NULL) {
+ int busy;
- ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
- blwi->blwi_lock);
- OBD_FREE(blwi, sizeof(*blwi));
+ cfs_atomic_dec(&blp->blp_busy_threads);
+ l_wait_event_exclusive(blp->blp_waitq,
+ (blwi = ldlm_bl_get_work(blp)) != NULL,
+ &lwi);
+ busy = cfs_atomic_inc_return(&blp->blp_busy_threads);
+
+ if (blwi->blwi_ns == NULL)
+ /* added by ldlm_cleanup() */
+ break;
+
+ /* Not fatal if racy and have a few too many threads */
+ if (unlikely(busy < blp->blp_max_threads &&
+ busy >= cfs_atomic_read(&blp->blp_num_threads)))
+ /* discard the return value, we tried */
+ ldlm_bl_thread_start(blp);
+ } else {
+ if (blwi->blwi_ns == NULL)
+ /* added by ldlm_cleanup() */
+ break;
+ }
+
+ if (blwi->blwi_count) {
+ /* The special case when we cancel locks in lru
+ * asynchronously, we pass the list of locks here.
+ * Thus locks are marked LDLM_FL_CANCELING, but NOT
+ * canceled locally yet. */
+ ldlm_cli_cancel_list_local(&blwi->blwi_head,
+ blwi->blwi_count, 0);
+ ldlm_cli_cancel_list(&blwi->blwi_head,
+ blwi->blwi_count, NULL, 0);
+ } else {
+ ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
+ blwi->blwi_lock);
+ }
+ cfs_complete(&blwi->blwi_comp);
+ ldlm_bl_work_item_put(blwi);
}
- atomic_dec(&blp->blp_num_threads);
- complete(&blp->blp_comp);
+ cfs_atomic_dec(&blp->blp_busy_threads);
+ cfs_atomic_dec(&blp->blp_num_threads);
+ cfs_complete(&blp->blp_comp);
RETURN(0);
}
#endif
static int ldlm_setup(void);
-static int ldlm_cleanup(int force);
+static int ldlm_cleanup(void);
int ldlm_get_ref(void)
{
int rc = 0;
ENTRY;
- mutex_down(&ldlm_ref_sem);
+ cfs_mutex_down(&ldlm_ref_sem);
if (++ldlm_refcount == 1) {
rc = ldlm_setup();
if (rc)
ldlm_refcount--;
}
- mutex_up(&ldlm_ref_sem);
+ cfs_mutex_up(&ldlm_ref_sem);
RETURN(rc);
}
-void ldlm_put_ref(int force)
+void ldlm_put_ref(void)
{
ENTRY;
- mutex_down(&ldlm_ref_sem);
+ cfs_mutex_down(&ldlm_ref_sem);
if (ldlm_refcount == 1) {
- int rc = ldlm_cleanup(force);
+ int rc = ldlm_cleanup();
if (rc)
CERROR("ldlm_cleanup failed: %d\n", rc);
else
} else {
ldlm_refcount--;
}
- mutex_up(&ldlm_ref_sem);
+ cfs_mutex_up(&ldlm_ref_sem);
+
+ EXIT;
+}
+
+/*
+ * Export handle<->lock hash operations.
+ */
+static unsigned
+ldlm_export_lock_hash(cfs_hash_t *hs, void *key, unsigned mask)
+{
+ return cfs_hash_u64_hash(((struct lustre_handle *)key)->cookie, mask);
+}
+static void *
+ldlm_export_lock_key(cfs_hlist_node_t *hnode)
+{
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+ RETURN(&lock->l_remote_handle);
+}
+
+static int
+ldlm_export_lock_compare(void *key, cfs_hlist_node_t *hnode)
+{
+ ENTRY;
+ RETURN(lustre_handle_equal(ldlm_export_lock_key(hnode), key));
+}
+
+static void *
+ldlm_export_lock_get(cfs_hlist_node_t *hnode)
+{
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+ LDLM_LOCK_GET(lock);
+
+ RETURN(lock);
+}
+
+static void *
+ldlm_export_lock_put(cfs_hlist_node_t *hnode)
+{
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+ LDLM_LOCK_RELEASE(lock);
+
+ RETURN(lock);
+}
+
+static cfs_hash_ops_t ldlm_export_lock_ops = {
+ .hs_hash = ldlm_export_lock_hash,
+ .hs_key = ldlm_export_lock_key,
+ .hs_compare = ldlm_export_lock_compare,
+ .hs_get = ldlm_export_lock_get,
+ .hs_put = ldlm_export_lock_put
+};
+
+int ldlm_init_export(struct obd_export *exp)
+{
+ ENTRY;
+
+ exp->exp_lock_hash =
+ cfs_hash_create(obd_uuid2str(&exp->exp_client_uuid),
+ HASH_EXP_LOCK_CUR_BITS, HASH_EXP_LOCK_MAX_BITS,
+ &ldlm_export_lock_ops, CFS_HASH_REHASH);
+
+ if (!exp->exp_lock_hash)
+ RETURN(-ENOMEM);
+
+ RETURN(0);
+}
+EXPORT_SYMBOL(ldlm_init_export);
+
+void ldlm_destroy_export(struct obd_export *exp)
+{
+ ENTRY;
+ cfs_hash_putref(exp->exp_lock_hash);
+ exp->exp_lock_hash = NULL;
EXIT;
}
+EXPORT_SYMBOL(ldlm_destroy_export);
static int ldlm_setup(void)
{
struct ldlm_bl_pool *blp;
int rc = 0;
+ int ldlm_min_threads = LDLM_THREADS_AUTO_MIN;
+ int ldlm_max_threads = LDLM_THREADS_AUTO_MAX;
#ifdef __KERNEL__
int i;
#endif
GOTO(out_free, rc);
#endif
+#ifdef __KERNEL__
+ if (ldlm_num_threads) {
+ /* If ldlm_num_threads is set, it is the min and the max. */
+ if (ldlm_num_threads > LDLM_THREADS_AUTO_MAX)
+ ldlm_num_threads = LDLM_THREADS_AUTO_MAX;
+ if (ldlm_num_threads < LDLM_THREADS_AUTO_MIN)
+ ldlm_num_threads = LDLM_THREADS_AUTO_MIN;
+ ldlm_min_threads = ldlm_max_threads = ldlm_num_threads;
+ }
+#endif
+
ldlm_state->ldlm_cb_service =
ptlrpc_init_svc(LDLM_NBUFS, LDLM_BUFSIZE, LDLM_MAXREQSIZE,
LDLM_MAXREPSIZE, LDLM_CB_REQUEST_PORTAL,
- LDLM_CB_REPLY_PORTAL, ldlm_timeout * 900,
+ LDLM_CB_REPLY_PORTAL, 2,
ldlm_callback_handler, "ldlm_cbd",
ldlm_svc_proc_dir, NULL,
- LDLM_THREADS_AUTO_MIN, LDLM_THREADS_AUTO_MAX,
- "ldlm_cb");
+ ldlm_min_threads, ldlm_max_threads,
+ "ldlm_cb",
+ LCT_MD_THREAD|LCT_DT_THREAD, NULL);
if (!ldlm_state->ldlm_cb_service) {
CERROR("failed to start service\n");
ldlm_state->ldlm_cancel_service =
ptlrpc_init_svc(LDLM_NBUFS, LDLM_BUFSIZE, LDLM_MAXREQSIZE,
LDLM_MAXREPSIZE, LDLM_CANCEL_REQUEST_PORTAL,
- LDLM_CANCEL_REPLY_PORTAL, ldlm_timeout * 6000,
+ LDLM_CANCEL_REPLY_PORTAL, 6,
ldlm_cancel_handler, "ldlm_canceld",
ldlm_svc_proc_dir, NULL,
- LDLM_THREADS_AUTO_MIN, LDLM_THREADS_AUTO_MAX,
- "ldlm_cn");
+ ldlm_min_threads, ldlm_max_threads,
+ "ldlm_cn",
+ LCT_MD_THREAD|LCT_DT_THREAD|LCT_CL_THREAD,
+ NULL);
if (!ldlm_state->ldlm_cancel_service) {
CERROR("failed to start service\n");
GOTO(out_proc, rc = -ENOMEM);
ldlm_state->ldlm_bl_pool = blp;
- atomic_set(&blp->blp_num_threads, 0);
- cfs_waitq_init(&blp->blp_waitq);
- spin_lock_init(&blp->blp_lock);
-
+ cfs_spin_lock_init(&blp->blp_lock);
CFS_INIT_LIST_HEAD(&blp->blp_list);
+ CFS_INIT_LIST_HEAD(&blp->blp_prio_list);
+ cfs_waitq_init(&blp->blp_waitq);
+ cfs_atomic_set(&blp->blp_num_threads, 0);
+ cfs_atomic_set(&blp->blp_busy_threads, 0);
+ blp->blp_min_threads = ldlm_min_threads;
+ blp->blp_max_threads = ldlm_max_threads;
#ifdef __KERNEL__
- for (i = 0; i < LDLM_BL_THREADS; i++) {
- struct ldlm_bl_thread_data bltd = {
- .bltd_num = i,
- .bltd_blp = blp,
- };
- init_completion(&blp->blp_comp);
- rc = cfs_kernel_thread(ldlm_bl_thread_main, &bltd, 0);
- if (rc < 0) {
- CERROR("cannot start LDLM thread #%d: rc %d\n", i, rc);
+ for (i = 0; i < blp->blp_min_threads; i++) {
+ rc = ldlm_bl_thread_start(blp);
+ if (rc < 0)
GOTO(out_thread, rc);
- }
- wait_for_completion(&blp->blp_comp);
}
rc = ptlrpc_start_threads(NULL, ldlm_state->ldlm_cancel_service);
cfs_waitq_init(&expired_lock_thread.elt_waitq);
CFS_INIT_LIST_HEAD(&waiting_locks_list);
- spin_lock_init(&waiting_locks_spinlock);
+ cfs_spin_lock_init(&waiting_locks_spinlock);
cfs_timer_init(&waiting_locks_timer, waiting_locks_callback, 0);
rc = cfs_kernel_thread(expired_lock_main, NULL, CLONE_VM | CLONE_FILES);
GOTO(out_thread, rc);
}
- wait_event(expired_lock_thread.elt_waitq,
- expired_lock_thread.elt_state == ELT_READY);
+ cfs_wait_event(expired_lock_thread.elt_waitq,
+ expired_lock_thread.elt_state == ELT_READY);
#endif
+#ifdef __KERNEL__
+ rc = ldlm_pools_init();
+ if (rc)
+ GOTO(out_thread, rc);
+#endif
RETURN(0);
#ifdef __KERNEL__
return rc;
}
-static int ldlm_cleanup(int force)
+static int ldlm_cleanup(void)
{
#ifdef __KERNEL__
struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
#endif
ENTRY;
- if (!list_empty(&ldlm_namespace_list)) {
+ if (!cfs_list_empty(ldlm_namespace_list(LDLM_NAMESPACE_SERVER)) ||
+ !cfs_list_empty(ldlm_namespace_list(LDLM_NAMESPACE_CLIENT))) {
CERROR("ldlm still has namespaces; clean these up first.\n");
- ldlm_dump_all_namespaces(D_DLMTRACE);
+ ldlm_dump_all_namespaces(LDLM_NAMESPACE_SERVER, D_DLMTRACE);
+ ldlm_dump_all_namespaces(LDLM_NAMESPACE_CLIENT, D_DLMTRACE);
RETURN(-EBUSY);
}
#ifdef __KERNEL__
- while (atomic_read(&blp->blp_num_threads) > 0) {
+ ldlm_pools_fini();
+#endif
+
+#ifdef __KERNEL__
+ while (cfs_atomic_read(&blp->blp_num_threads) > 0) {
struct ldlm_bl_work_item blwi = { .blwi_ns = NULL };
- init_completion(&blp->blp_comp);
+ cfs_init_completion(&blp->blp_comp);
- spin_lock(&blp->blp_lock);
- list_add_tail(&blwi.blwi_entry, &blp->blp_list);
+ cfs_spin_lock(&blp->blp_lock);
+ cfs_list_add_tail(&blwi.blwi_entry, &blp->blp_list);
cfs_waitq_signal(&blp->blp_waitq);
- spin_unlock(&blp->blp_lock);
+ cfs_spin_unlock(&blp->blp_lock);
- wait_for_completion(&blp->blp_comp);
+ cfs_wait_for_completion(&blp->blp_comp);
}
OBD_FREE(blp, sizeof(*blp));
expired_lock_thread.elt_state = ELT_TERMINATE;
cfs_waitq_signal(&expired_lock_thread.elt_waitq);
- wait_event(expired_lock_thread.elt_waitq,
- expired_lock_thread.elt_state == ELT_STOPPED);
+ cfs_wait_event(expired_lock_thread.elt_waitq,
+ expired_lock_thread.elt_state == ELT_STOPPED);
#else
ptlrpc_unregister_service(ldlm_state->ldlm_cb_service);
ptlrpc_unregister_service(ldlm_state->ldlm_cancel_service);
int __init ldlm_init(void)
{
- init_mutex(&ldlm_ref_sem);
- init_mutex(&ldlm_namespace_lock);
+ cfs_init_mutex(&ldlm_ref_sem);
+ cfs_init_mutex(ldlm_namespace_lock(LDLM_NAMESPACE_SERVER));
+ cfs_init_mutex(ldlm_namespace_lock(LDLM_NAMESPACE_CLIENT));
ldlm_resource_slab = cfs_mem_cache_create("ldlm_resources",
sizeof(struct ldlm_resource), 0,
- SLAB_HWCACHE_ALIGN);
+ CFS_SLAB_HWCACHE_ALIGN);
if (ldlm_resource_slab == NULL)
return -ENOMEM;
ldlm_lock_slab = cfs_mem_cache_create("ldlm_locks",
- sizeof(struct ldlm_lock), 0,
- SLAB_HWCACHE_ALIGN);
+ sizeof(struct ldlm_lock), 0,
+ CFS_SLAB_HWCACHE_ALIGN | CFS_SLAB_DESTROY_BY_RCU);
if (ldlm_lock_slab == NULL) {
cfs_mem_cache_destroy(ldlm_resource_slab);
return -ENOMEM;
}
+ ldlm_interval_slab = cfs_mem_cache_create("interval_node",
+ sizeof(struct ldlm_interval),
+ 0, CFS_SLAB_HWCACHE_ALIGN);
+ if (ldlm_interval_slab == NULL) {
+ cfs_mem_cache_destroy(ldlm_resource_slab);
+ cfs_mem_cache_destroy(ldlm_lock_slab);
+ return -ENOMEM;
+ }
+#if LUSTRE_TRACKS_LOCK_EXP_REFS
+ class_export_dump_hook = ldlm_dump_export_locks;
+#endif
return 0;
}
CERROR("ldlm_refcount is %d in ldlm_exit!\n", ldlm_refcount);
rc = cfs_mem_cache_destroy(ldlm_resource_slab);
LASSERTF(rc == 0, "couldn't free ldlm resource slab\n");
+#ifdef __KERNEL__
+ /* ldlm_lock_put() use RCU to call ldlm_lock_free, so need call
+ * synchronize_rcu() to wait a grace period elapsed, so that
+ * ldlm_lock_free() get a chance to be called. */
+ synchronize_rcu();
+#endif
rc = cfs_mem_cache_destroy(ldlm_lock_slab);
LASSERTF(rc == 0, "couldn't free ldlm lock slab\n");
+ rc = cfs_mem_cache_destroy(ldlm_interval_slab);
+ LASSERTF(rc == 0, "couldn't free interval node slab\n");
}
/* ldlm_extent.c */
EXPORT_SYMBOL(ldlm_lock_match);
EXPORT_SYMBOL(ldlm_lock_cancel);
EXPORT_SYMBOL(ldlm_lock_addref);
+EXPORT_SYMBOL(ldlm_lock_addref_try);
EXPORT_SYMBOL(ldlm_lock_decref);
EXPORT_SYMBOL(ldlm_lock_decref_and_cancel);
EXPORT_SYMBOL(ldlm_lock_change_resource);
-EXPORT_SYMBOL(ldlm_lock_set_data);
EXPORT_SYMBOL(ldlm_it2str);
EXPORT_SYMBOL(ldlm_lock_dump);
EXPORT_SYMBOL(ldlm_lock_dump_handle);
-EXPORT_SYMBOL(ldlm_cancel_locks_for_export);
EXPORT_SYMBOL(ldlm_reprocess_all_ns);
+EXPORT_SYMBOL(ldlm_lock_allow_match_locked);
EXPORT_SYMBOL(ldlm_lock_allow_match);
+EXPORT_SYMBOL(ldlm_lock_downgrade);
+EXPORT_SYMBOL(ldlm_lock_convert);
/* ldlm_request.c */
+EXPORT_SYMBOL(ldlm_completion_ast_async);
+EXPORT_SYMBOL(ldlm_blocking_ast_nocheck);
EXPORT_SYMBOL(ldlm_completion_ast);
EXPORT_SYMBOL(ldlm_blocking_ast);
EXPORT_SYMBOL(ldlm_glimpse_ast);
EXPORT_SYMBOL(ldlm_expired_completion_wait);
+EXPORT_SYMBOL(ldlm_prep_enqueue_req);
+EXPORT_SYMBOL(ldlm_prep_elc_req);
EXPORT_SYMBOL(ldlm_cli_convert);
EXPORT_SYMBOL(ldlm_cli_enqueue);
EXPORT_SYMBOL(ldlm_cli_enqueue_fini);
EXPORT_SYMBOL(ldlm_cli_enqueue_local);
EXPORT_SYMBOL(ldlm_cli_cancel);
EXPORT_SYMBOL(ldlm_cli_cancel_unused);
-EXPORT_SYMBOL(ldlm_cli_join_lru);
+EXPORT_SYMBOL(ldlm_cli_cancel_unused_resource);
+EXPORT_SYMBOL(ldlm_cli_cancel_req);
EXPORT_SYMBOL(ldlm_replay_locks);
EXPORT_SYMBOL(ldlm_resource_foreach);
EXPORT_SYMBOL(ldlm_namespace_foreach);
EXPORT_SYMBOL(ldlm_namespace_foreach_res);
EXPORT_SYMBOL(ldlm_resource_iterate);
+EXPORT_SYMBOL(ldlm_cancel_resource_local);
+EXPORT_SYMBOL(ldlm_cli_cancel_list_local);
+EXPORT_SYMBOL(ldlm_cli_cancel_list);
/* ldlm_lockd.c */
EXPORT_SYMBOL(ldlm_server_blocking_ast);
EXPORT_SYMBOL(ldlm_server_completion_ast);
EXPORT_SYMBOL(ldlm_server_glimpse_ast);
EXPORT_SYMBOL(ldlm_handle_enqueue);
+EXPORT_SYMBOL(ldlm_handle_enqueue0);
EXPORT_SYMBOL(ldlm_handle_cancel);
+EXPORT_SYMBOL(ldlm_request_cancel);
EXPORT_SYMBOL(ldlm_handle_convert);
+EXPORT_SYMBOL(ldlm_handle_convert0);
EXPORT_SYMBOL(ldlm_del_waiting_lock);
EXPORT_SYMBOL(ldlm_get_ref);
EXPORT_SYMBOL(ldlm_put_ref);
EXPORT_SYMBOL(ldlm_refresh_waiting_lock);
+EXPORT_SYMBOL(ldlm_revoke_export_locks);
/* ldlm_resource.c */
EXPORT_SYMBOL(ldlm_namespace_new);
EXPORT_SYMBOL(client_obd_cleanup);
EXPORT_SYMBOL(client_connect_import);
EXPORT_SYMBOL(client_disconnect_export);
-EXPORT_SYMBOL(target_abort_recovery);
-EXPORT_SYMBOL(target_cleanup_recovery);
+EXPORT_SYMBOL(server_disconnect_export);
+EXPORT_SYMBOL(target_stop_recovery_thread);
EXPORT_SYMBOL(target_handle_connect);
+EXPORT_SYMBOL(target_cleanup_recovery);
EXPORT_SYMBOL(target_destroy_export);
EXPORT_SYMBOL(target_cancel_recovery_timer);
EXPORT_SYMBOL(target_send_reply);
EXPORT_SYMBOL(target_queue_recovery_request);
EXPORT_SYMBOL(target_handle_ping);
+EXPORT_SYMBOL(target_pack_pool_reply);
EXPORT_SYMBOL(target_handle_disconnect);
-EXPORT_SYMBOL(target_queue_final_reply);
/* l_lock.c */
EXPORT_SYMBOL(lock_res_and_lock);
EXPORT_SYMBOL(unlock_res_and_lock);
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff