/* -*- 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;
static struct semaphore ldlm_ref_sem;
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;
struct ldlm_bl_pool {
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
+ */
+ struct list_head blp_prio_list;
+
+ /*
+ * blp_list is used for all other callbacks which are likely
+ * to take longer to process.
+ */
struct list_head blp_list;
+
cfs_waitq_t blp_waitq;
- atomic_t blp_num_threads;
struct completion blp_comp;
+ atomic_t blp_num_threads;
+ atomic_t blp_busy_threads;
+ int blp_min_threads;
+ int blp_max_threads;
};
struct ldlm_bl_work_item {
goto repeat;
}
- LDLM_ERROR(lock, "lock callback timer expired: evicting client "
- "%s@%s nid %s\n",
- 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));
+ LDLM_ERROR(lock, "lock callback timer expired after %lds: "
+ "evicting client at %s ",
+ cfs_time_current_sec()- lock->l_enqueued_time.tv_sec,
+ libcfs_nid2str(
+ lock->l_export->exp_connection->c_peer.nid));
last = lock;
*/
static int __ldlm_add_waiting_lock(struct ldlm_lock *lock)
{
+ int timeout;
cfs_time_t timeout_rounded;
if (!list_empty(&lock->l_pending_chain))
return 0;
- lock->l_callback_timeout =cfs_time_add(cfs_time_current(),
- cfs_time_seconds(obd_timeout)/2);
+ timeout = ldlm_get_enq_timeout(lock);
+
+ lock->l_callback_timeout = cfs_time_shift(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);
-
}
+ /* 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. */
list_add_tail(&lock->l_pending_chain, &waiting_locks_list); /* FIFO */
return 1;
}
if (obd_dump_on_timeout)
libcfs_debug_dumplog();
+#ifdef __KERNEL__
+ spin_lock_bh(&waiting_locks_spinlock);
+ list_add(&lock->l_pending_chain, &expired_lock_thread.elt_expired_locks);
+ cfs_waitq_signal(&expired_lock_thread.elt_waitq);
+ spin_unlock_bh(&waiting_locks_spinlock);
+#else
class_fail_export(lock->l_export);
+#endif
}
static int ldlm_handle_ast_error(struct ldlm_lock *lock,
return rc;
}
-static int ldlm_cb_interpret(struct ptlrpc_request *req, void *data, int 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;
lock = req->rq_async_args.pointer_arg[1];
LASSERT(lock != NULL);
if (rc != 0) {
- /* If client canceled the lock but the cancel has not
+ /* If client canceled the lock but the cancel has not
* been recieved 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,
+ ldlm_res_lvbo_update(lock->l_resource, NULL,
0, 1);
- rc = ldlm_handle_ast_error(lock, req, rc,
+ rc = ldlm_handle_ast_error(lock, req, rc,
arg->type == LDLM_BL_CALLBACK
? "blocking" : "completion");
- }
+ }
- LDLM_LOCK_PUT(lock);
+ LDLM_LOCK_RELEASE(lock);
if (rc == -ERESTART)
atomic_set(&arg->restart, 1);
} else {
LDLM_LOCK_GET(lock);
ptlrpc_set_add_req(arg->set, req);
- }
+ }
RETURN(rc);
}
void *data, int flag)
{
struct ldlm_cb_set_arg *arg = data;
- 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;
+ 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);
ldlm_lock_dump(D_ERROR, lock, 0);
}
- 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);
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 = 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);
}
req->rq_send_state = LUSTRE_IMP_FULL;
- req->rq_timeout = ldlm_get_rq_timeout(ldlm_timeout, obd_timeout);
+ /* ptlrpc_prep_req 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);
rc = ldlm_bl_and_cp_ast_fini(req, arg, lock, instant_cancel);
int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data)
{
struct ldlm_cb_set_arg *arg = 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, buffers = 2, instant_cancel = 0;
+ struct ldlm_request *body;
+ struct ptlrpc_request *req;
+ struct timeval granted_time;
+ long total_enqueue_wait;
+ int instant_cancel = 0;
+ int rc = 0;
ENTRY;
LASSERT(lock != NULL);
total_enqueue_wait = cfs_timeval_sub(&granted_time,
&lock->l_enqueued_time, NULL);
- if (total_enqueue_wait / 1000000 > obd_timeout)
- LDLM_ERROR(lock, "enqueue wait took %luus from %lu",
+ if (total_enqueue_wait / ONE_MILLION > obd_timeout)
+ /* non-fatal with AT - change to LDLM_DEBUG? */
+ LDLM_ERROR(lock, "enqueue wait took %luus from "CFS_TIME_T,
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_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);
LDLM_DEBUG(lock, "server preparing completion AST (after %ldus 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 */
+ at_add(&lock->l_resource->lr_namespace->ns_at_estimate,
+ total_enqueue_wait / ONE_MILLION);
+
+ ptlrpc_request_set_replen(req);
req->rq_send_state = LUSTRE_IMP_FULL;
- req->rq_timeout = ldlm_get_rq_timeout(ldlm_timeout, obd_timeout);
+ /* ptlrpc_prep_req 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);
}
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 = ldlm_bl_and_cp_ast_fini(req, arg, lock, instant_cancel);
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 = 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_prep_req 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);
rc = ldlm_res_lvbo_update(res, req->rq_repmsg,
REPLY_REC_OFF, 1);
ptlrpc_req_finished(req);
- RETURN(rc);
-}
+ if (rc == -ERESTART)
+ ldlm_reprocess_all(res);
-static struct ldlm_lock *
-find_existing_lock(struct obd_export *exp,
- const struct lustre_handle *remote_hdl)
-{
- struct list_head *iter;
-
- 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;
- }
- }
- spin_unlock(&exp->exp_ldlm_data.led_lock);
- return NULL;
+ RETURN(rc);
}
#ifdef __KERNEL__
#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)
+{
+ int lock_type = 0, op = 0;
+
+ 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;
+ }
+
+ 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.
const struct ldlm_callback_suite *cbs)
{
struct ldlm_reply *dlm_rep;
- 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");
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 (unlikely(dlm_req->lock_desc.l_resource.lr_type < LDLM_MIN_TYPE ||
#endif
if (unlikely(flags & LDLM_FL_REPLAY)) {
- lock = find_existing_lock(req->rq_export,
- &dlm_req->lock_handle[0]);
+ /* Find an existing lock in the per-export lock hash */
+ lock = lustre_hash_lookup(req->rq_export->exp_lock_hash,
+ (void *)&dlm_req->lock_handle[0]);
if (lock != NULL) {
DEBUG_REQ(D_DLMTRACE, req, "found existing lock cookie "
LPX64, lock->l_handle.h_cookie);
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,
- cbs->lcs_blocking, cbs->lcs_completion,
- cbs->lcs_glimpse, NULL, 0);
+ cbs, NULL, 0);
if (!lock)
GOTO(out, rc = -ENOMEM);
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);
+
+ if (lock->l_export->exp_lock_hash)
+ lustre_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(ns, &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 (unlikely(req->rq_export->exp_failed ||
- OBD_FAIL_CHECK_ONCE(OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT))) {
+ 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) {
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
lock_res_and_lock(lock);
if (rc == 0) {
- 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);
}
} else {
ldlm_resource_unlink_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)",
ldlm_blocking_callback blocking_callback,
ldlm_glimpse_callback glimpse_callback)
{
- int rc;
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 = 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) {
rc = ldlm_handle_enqueue0(req->rq_export->exp_obd->obd_namespace,
req, dlm_req, &cbs);
} else {
- CERROR ("Can't unpack dlm_req\n");
rc = -EFAULT;
}
return rc;
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;
- 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);
+ rc = req_capsule_server_pack(&req->rq_pill);
if (rc)
RETURN(rc);
- 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 = dlm_req->lock_flags;
lock = ldlm_handle2lock(&dlm_req->lock_handle[0]);
int rc;
struct ldlm_request *dlm_req;
- 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) {
rc = ldlm_handle_convert0(req, dlm_req);
} else {
return rc;
}
-/* Cancel all the locks, which handles are packed into ldlm_request */
+/* 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)
{
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, 0, 1);
}
pres = res;
}
if (pres != NULL) {
ldlm_reprocess_all(pres);
+ LDLM_RESOURCE_DELREF(pres);
ldlm_resource_putref(pres);
}
LDLM_DEBUG_NOLOCK("server-side cancel handler END");
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);
+ rc = req_capsule_server_pack(&req->rq_pill);
if (rc)
RETURN(rc);
}
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(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_swab_get(&req->rq_pill,
+ &RMF_DLM_LVB,
+ (void *)lock->l_lvb_swabber);
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;
}
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;
blwi->blwi_lock = lock;
}
spin_lock(&blp->blp_lock);
- list_add_tail(&blwi->blwi_entry, &blp->blp_list);
+ if (lock && lock->l_flags & LDLM_FL_DISCARD_DATA) {
+ /* add LDLM_FL_DISCARD_DATA requests to the priority list */
+ list_add_tail(&blwi->blwi_entry, &blp->blp_prio_list);
+ } else {
+ /* other blocking callbacks are added to the regular list */
+ list_add_tail(&blwi->blwi_entry, &blp->blp_list);
+ }
cfs_waitq_signal(&blp->blp_waitq);
spin_unlock(&blp->blp_lock);
#endif
}
+/* 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. */
+ /* do nothing for sec context finalize */
+ if (lustre_msg_get_opc(req->rq_reqmsg) == SEC_CTX_FINI)
+ RETURN(0);
+
+ 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);
+ 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)
CDEBUG(D_RPCTRACE, "--> lock cookie: "LPX64"\n",
dlm_req->lock_handle[0].cookie);
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 OBD_LOG_CANCEL: /* remove this eventually - for 1.4.0 compat */
- 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);
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);
- case SEC_CTX_FINI:
- /* do nothing */
- RETURN(0);
default:
CERROR("unknown opcode %u\n",
lustre_msg_get_opc(req->rq_reqmsg));
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);
+ RETURN(0);
}
- lock = ldlm_handle2lock_ns(ns, &dlm_req->lock_handle[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_long(&dlm_req->lock_handle[0], 0);
if (!lock) {
CDEBUG(D_DLMTRACE, "callback on lock "LPX64" - lock "
"disappeared\n", dlm_req->lock_handle[0].cookie);
LPX64" - lock disappeared\n",
dlm_req->lock_handle[0].cookie);
unlock_res_and_lock(lock);
- LDLM_LOCK_PUT(lock);
+ LDLM_LOCK_RELEASE(lock);
ldlm_callback_reply(req, -EINVAL);
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);
switch (lustre_msg_get_opc(req->rq_reqmsg)) {
case LDLM_BL_CALLBACK:
CDEBUG(D_INODE, "blocking ast\n");
+ req_capsule_extend(&req->rq_pill, &RQF_LDLM_BL_CALLBACK);
if (!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK))
ldlm_callback_reply(req, 0);
if (ldlm_bl_to_thread_lock(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);
+ 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]);
/* 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_export_locks(struct obd_export *exp)
+void ldlm_revoke_lock_cb(void *obj, void *data)
{
- struct list_head *locklist = &exp->exp_ldlm_data.led_held_locks;
- struct list_head rpc_list;
- struct ldlm_lock *lock, *next;
- struct ldlm_lock_desc desc;
+ struct list_head *rpc_list = data;
+ struct ldlm_lock *lock = obj;
- ENTRY;
- INIT_LIST_HEAD(&rpc_list);
-
- spin_lock(&exp->exp_ldlm_data.led_lock);
- list_for_each_entry_safe(lock, next, locklist, l_export_chain) {
- lock_res_and_lock(lock);
+ lock_res_and_lock(lock);
- if (lock->l_req_mode != lock->l_granted_mode) {
- unlock_res_and_lock(lock);
- continue;
- }
+ 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);
- continue;
- }
+ 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);
- continue;
- }
+ if (lock->l_flags & LDLM_FL_AST_SENT) {
+ unlock_res_and_lock(lock);
+ return;
+ }
- LASSERT(lock->l_blocking_ast);
- LASSERT(!lock->l_blocking_lock);
+ LASSERT(lock->l_blocking_ast);
+ LASSERT(!lock->l_blocking_lock);
- lock->l_flags |= LDLM_FL_AST_SENT;
- list_move(&lock->l_export_chain, &rpc_list);
+ lock->l_flags |= LDLM_FL_AST_SENT;
+ if (lock->l_export && lock->l_export->exp_lock_hash)
+ lustre_hash_del(lock->l_export->exp_lock_hash,
+ &lock->l_remote_handle, &lock->l_exp_hash);
+ list_add_tail(&lock->l_rk_ast, rpc_list);
+ LDLM_LOCK_GET(lock);
- unlock_res_and_lock(lock);
- }
- spin_unlock(&exp->exp_ldlm_data.led_lock);
+ unlock_res_and_lock(lock);
+}
- while (!list_empty(&rpc_list)) {
- lock = list_entry(rpc_list.next, struct ldlm_lock,
- l_export_chain);
- list_del_init(&lock->l_export_chain);
+void ldlm_revoke_export_locks(struct obd_export *exp)
+{
+ struct list_head rpc_list;
+ ENTRY;
- /* the desc just pretend to exclusive */
- ldlm_lock2desc(lock, &desc);
- desc.l_req_mode = LCK_EX;
- desc.l_granted_mode = 0;
+ CFS_INIT_LIST_HEAD(&rpc_list);
+ lustre_hash_for_each_empty(exp->exp_lock_hash,
+ ldlm_revoke_lock_cb, &rpc_list);
+ ldlm_run_ast_work(&rpc_list, LDLM_WORK_REVOKE_AST);
- LDLM_LOCK_GET(lock);
- lock->l_blocking_ast(lock, &desc, lock->l_ast_data,
- LDLM_CB_BLOCKING);
- LDLM_LOCK_PUT(lock);
- }
EXIT;
}
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;
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);
+ /* process a request from the blp_list at least every blp_num_threads */
+ if (!list_empty(&blp->blp_list) &&
+ (list_empty(&blp->blp_prio_list) || num_bl == 0))
+ blwi = list_entry(blp->blp_list.next,
+ struct ldlm_bl_work_item, blwi_entry);
+ else
+ if (!list_empty(&blp->blp_prio_list))
+ blwi = list_entry(blp->blp_prio_list.next,
+ struct ldlm_bl_work_item, blwi_entry);
+
+ if (blwi) {
+ if (++num_bl >= atomic_read(&blp->blp_num_threads))
+ num_bl = 0;
list_del(&blwi->blwi_entry);
}
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;
+ struct completion 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;
+
+ 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",
+ atomic_read(&blp->blp_num_threads), rc);
+ return rc;
+ }
+ 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;
+
+ bltd->bltd_num = atomic_inc_return(&blp->blp_num_threads) - 1;
+ 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);
- while(1) {
+ 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;
+
+ atomic_dec(&blp->blp_busy_threads);
+ l_wait_event_exclusive(blp->blp_waitq,
+ (blwi = ldlm_bl_get_work(blp)) != NULL,
+ &lwi);
+ busy = 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 >= 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
* Thus lock is marked LDLM_FL_CANCELING, and already
* canceled locally. */
ldlm_cli_cancel_list(&blwi->blwi_head,
- blwi->blwi_count, NULL, 0, 0);
+ blwi->blwi_count, NULL, 0);
} else {
ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
blwi->blwi_lock);
OBD_FREE(blwi, sizeof(*blwi));
}
+ atomic_dec(&blp->blp_busy_threads);
atomic_dec(&blp->blp_num_threads);
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)
{
RETURN(rc);
}
-void ldlm_put_ref(int force)
+void ldlm_put_ref(void)
{
ENTRY;
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
EXIT;
}
+/*
+ * Export handle<->lock hash operations.
+ */
+static unsigned
+ldlm_export_lock_hash(lustre_hash_t *lh, void *key, unsigned mask)
+{
+ return lh_u64_hash(((struct lustre_handle *)key)->cookie, mask);
+}
+
+static void *
+ldlm_export_lock_key(struct hlist_node *hnode)
+{
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+ RETURN(&lock->l_remote_handle);
+}
+
+static int
+ldlm_export_lock_compare(void *key, struct hlist_node *hnode)
+{
+ ENTRY;
+ RETURN(lustre_handle_equal(ldlm_export_lock_key(hnode), key));
+}
+
+static void *
+ldlm_export_lock_get(struct hlist_node *hnode)
+{
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+ LDLM_LOCK_GET(lock);
+
+ RETURN(lock);
+}
+
+static void *
+ldlm_export_lock_put(struct hlist_node *hnode)
+{
+ struct ldlm_lock *lock;
+ ENTRY;
+
+ lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+ LDLM_LOCK_RELEASE(lock);
+
+ RETURN(lock);
+}
+
+static lustre_hash_ops_t ldlm_export_lock_ops = {
+ .lh_hash = ldlm_export_lock_hash,
+ .lh_key = ldlm_export_lock_key,
+ .lh_compare = ldlm_export_lock_compare,
+ .lh_get = ldlm_export_lock_get,
+ .lh_put = ldlm_export_lock_put
+};
+
+int ldlm_init_export(struct obd_export *exp)
+{
+ ENTRY;
+
+ exp->exp_lock_hash =
+ lustre_hash_init(obd_uuid2str(&exp->exp_client_uuid),
+ 128, 65536, &ldlm_export_lock_ops, LH_REHASH);
+
+ if (!exp->exp_lock_hash)
+ RETURN(-ENOMEM);
+
+ RETURN(0);
+}
+EXPORT_SYMBOL(ldlm_init_export);
+
+void ldlm_destroy_export(struct obd_export *exp)
+{
+ ENTRY;
+ lustre_hash_exit(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, 1800,
ldlm_callback_handler, "ldlm_cbd",
ldlm_svc_proc_dir, NULL,
- LDLM_THREADS_AUTO_MIN, LDLM_THREADS_AUTO_MAX,
+ ldlm_min_threads, ldlm_max_threads,
"ldlm_cb",
LCT_MD_THREAD|LCT_DT_THREAD);
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, 6000,
ldlm_cancel_handler, "ldlm_canceld",
ldlm_svc_proc_dir, NULL,
- LDLM_THREADS_AUTO_MIN, LDLM_THREADS_AUTO_MAX,
+ ldlm_min_threads, ldlm_max_threads,
"ldlm_cn",
LCT_MD_THREAD|LCT_DT_THREAD|LCT_CL_THREAD);
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_INIT_LIST_HEAD(&blp->blp_list);
+ CFS_INIT_LIST_HEAD(&blp->blp_prio_list);
+ cfs_waitq_init(&blp->blp_waitq);
+ atomic_set(&blp->blp_num_threads, 0);
+ 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);
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(LDLM_NAMESPACE_SERVER)) ||
+ if (!list_empty(ldlm_namespace_list(LDLM_NAMESPACE_SERVER)) ||
!list_empty(ldlm_namespace_list(LDLM_NAMESPACE_CLIENT))) {
CERROR("ldlm still has namespaces; clean these up first.\n");
ldlm_dump_all_namespaces(LDLM_NAMESPACE_SERVER, D_DLMTRACE);
return -ENOMEM;
}
+ ldlm_interval_slab = cfs_mem_cache_create("interval_node",
+ sizeof(struct ldlm_interval),
+ 0, SLAB_HWCACHE_ALIGN);
+ if (ldlm_interval_slab == NULL) {
+ cfs_mem_cache_destroy(ldlm_resource_slab);
+ cfs_mem_cache_destroy(ldlm_lock_slab);
+ return -ENOMEM;
+ }
+
return 0;
}
LASSERTF(rc == 0, "couldn't free ldlm resource slab\n");
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_handle2lock);
EXPORT_SYMBOL(ldlm_lock_get);
EXPORT_SYMBOL(ldlm_lock_put);
+EXPORT_SYMBOL(ldlm_lock_fast_match);
+EXPORT_SYMBOL(ldlm_lock_fast_release);
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_allow_match);
/* ldlm_request.c */
+EXPORT_SYMBOL(ldlm_completion_ast_async);
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_cancel_unused);
EXPORT_SYMBOL(ldlm_cli_cancel_unused_resource);
EXPORT_SYMBOL(ldlm_cli_cancel_req);
-EXPORT_SYMBOL(ldlm_cli_join_lru);
EXPORT_SYMBOL(ldlm_replay_locks);
EXPORT_SYMBOL(ldlm_resource_foreach);
EXPORT_SYMBOL(ldlm_namespace_foreach);
/* l_lock.c */
EXPORT_SYMBOL(lock_res_and_lock);
EXPORT_SYMBOL(unlock_res_and_lock);
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff