*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2010, 2013, Intel Corporation.
+ * Copyright (c) 2010, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LDLM
+#include <linux/kthread.h>
+#include <linux/list.h>
#include <libcfs/libcfs.h>
+#include <lustre_errno.h>
#include <lustre_dlm.h>
#include <obd_class.h>
-#include <libcfs/list.h>
#include "ldlm_internal.h"
static int ldlm_num_threads;
-CFS_MODULE_PARM(ldlm_num_threads, "i", int, 0444,
- "number of DLM service threads to start");
+module_param(ldlm_num_threads, int, 0444);
+MODULE_PARM_DESC(ldlm_num_threads, "number of DLM service threads to start");
+
+static unsigned int ldlm_cpu_bind = 1;
+module_param(ldlm_cpu_bind, uint, 0444);
+MODULE_PARM_DESC(ldlm_cpu_bind,
+ "bind DLM service threads to particular CPU partitions");
static char *ldlm_cpts;
-CFS_MODULE_PARM(ldlm_cpts, "s", charp, 0444,
- "CPU partitions ldlm threads should run on");
+module_param(ldlm_cpts, charp, 0444);
+MODULE_PARM_DESC(ldlm_cpts, "CPU partitions ldlm threads should run on");
-extern struct kmem_cache *ldlm_resource_slab;
-extern struct kmem_cache *ldlm_lock_slab;
-static struct mutex ldlm_ref_mutex;
+static DEFINE_MUTEX(ldlm_ref_mutex);
static int ldlm_refcount;
-struct ldlm_cb_async_args {
- struct ldlm_cb_set_arg *ca_set_arg;
- struct ldlm_lock *ca_lock;
-};
+struct kobject *ldlm_kobj;
+struct kset *ldlm_ns_kset;
+struct kset *ldlm_svc_kset;
/* LDLM state */
static struct ldlm_state *ldlm_state;
-inline cfs_time_t round_timeout(cfs_time_t timeout)
-{
- return cfs_time_seconds((int)cfs_duration_sec(cfs_time_sub(timeout, 0)) + 1);
-}
-
-/* timeout for initial callback (AST) reply (bz10399) */
-static inline unsigned int ldlm_get_rq_timeout(void)
+/* timeout for initial callback (AST) reply (bz10399)
+ * Due to having to send a 32 bit time value over the
+ * wire return it as time_t instead of time64_t
+ */
+static inline time_t ldlm_get_rq_timeout(void)
{
- /* Non-AT value */
- unsigned int timeout = min(ldlm_timeout, obd_timeout / 3);
+ /* Non-AT value */
+ time_t timeout = min(ldlm_timeout, obd_timeout / 3);
- return timeout < 1 ? 1 : timeout;
+ return timeout < 1 ? 1 : timeout;
}
-#define ELT_STOPPED 0
-#define ELT_READY 1
-#define ELT_TERMINATE 2
-
struct ldlm_bl_pool {
spinlock_t blp_lock;
};
struct ldlm_bl_work_item {
- struct list_head blwi_entry;
- struct ldlm_namespace *blwi_ns;
- struct ldlm_lock_desc blwi_ld;
- struct ldlm_lock *blwi_lock;
- struct list_head blwi_head;
- int blwi_count;
- struct completion blwi_comp;
- ldlm_cancel_flags_t blwi_flags;
- int blwi_mem_pressure;
+ struct list_head blwi_entry;
+ struct ldlm_namespace *blwi_ns;
+ struct ldlm_lock_desc blwi_ld;
+ struct ldlm_lock *blwi_lock;
+ struct list_head blwi_head;
+ int blwi_count;
+ struct completion blwi_comp;
+ enum ldlm_cancel_flags blwi_flags;
+ int blwi_mem_pressure;
};
#ifdef HAVE_SERVER_SUPPORT
/**
* Protects both waiting_locks_list and expired_lock_thread.
*/
-static spinlock_t waiting_locks_spinlock; /* BH lock (timer) */
+static DEFINE_SPINLOCK(waiting_locks_spinlock); /* BH lock (timer) */
/**
* List for contended locks.
*
* All access to it should be under waiting_locks_spinlock.
*/
-static struct list_head waiting_locks_list;
-static struct timer_list waiting_locks_timer;
+static LIST_HEAD(waiting_locks_list);
+static void waiting_locks_callback(TIMER_DATA_TYPE unused);
+static CFS_DEFINE_TIMER(waiting_locks_timer, waiting_locks_callback, 0, 0);
+
+enum elt_state {
+ ELT_STOPPED,
+ ELT_READY,
+ ELT_TERMINATE,
+};
+
+static DECLARE_WAIT_QUEUE_HEAD(expired_lock_wait_queue);
+static enum elt_state expired_lock_thread_state = ELT_STOPPED;
+static int expired_lock_dump;
+static LIST_HEAD(expired_lock_list);
-static struct expired_lock_thread {
- wait_queue_head_t elt_waitq;
- int elt_state;
- int elt_dump;
- struct list_head elt_expired_locks;
-} expired_lock_thread;
+static int ldlm_lock_busy(struct ldlm_lock *lock);
+static int ldlm_add_waiting_lock(struct ldlm_lock *lock, time64_t timeout);
+static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, time64_t seconds);
static inline int have_expired_locks(void)
{
ENTRY;
spin_lock_bh(&waiting_locks_spinlock);
- need_to_run = !list_empty(&expired_lock_thread.elt_expired_locks);
+ need_to_run = !list_empty(&expired_lock_list);
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;
+ struct list_head *expired = &expired_lock_list;
struct l_wait_info lwi = { 0 };
int do_dump;
ENTRY;
- expired_lock_thread.elt_state = ELT_READY;
- wake_up(&expired_lock_thread.elt_waitq);
+ expired_lock_thread_state = ELT_READY;
+ wake_up(&expired_lock_wait_queue);
while (1) {
- l_wait_event(expired_lock_thread.elt_waitq,
+ l_wait_event(expired_lock_wait_queue,
have_expired_locks() ||
- expired_lock_thread.elt_state == ELT_TERMINATE,
+ expired_lock_thread_state == ELT_TERMINATE,
&lwi);
spin_lock_bh(&waiting_locks_spinlock);
- if (expired_lock_thread.elt_dump) {
- struct libcfs_debug_msg_data msgdata = {
- .msg_file = __FILE__,
- .msg_fn = "waiting_locks_callback",
- .msg_line = expired_lock_thread.elt_dump };
+ if (expired_lock_dump) {
spin_unlock_bh(&waiting_locks_spinlock);
/* from waiting_locks_callback, but not in timer */
libcfs_debug_dumplog();
- libcfs_run_lbug_upcall(&msgdata);
spin_lock_bh(&waiting_locks_spinlock);
- expired_lock_thread.elt_dump = 0;
+ expired_lock_dump = 0;
}
do_dump = 0;
lock = list_entry(expired->next, struct ldlm_lock,
l_pending_chain);
- if ((void *)lock < LP_POISON + PAGE_CACHE_SIZE &&
+ if ((void *)lock < LP_POISON + PAGE_SIZE &&
(void *)lock >= LP_POISON) {
spin_unlock_bh(&waiting_locks_spinlock);
CERROR("free lock on elt list %p\n", lock);
}
list_del_init(&lock->l_pending_chain);
if ((void *)lock->l_export <
- LP_POISON + PAGE_CACHE_SIZE &&
+ LP_POISON + PAGE_SIZE &&
(void *)lock->l_export >= LP_POISON) {
CERROR("lock with free export on elt list %p\n",
lock->l_export);
export = class_export_lock_get(lock->l_export, lock);
spin_unlock_bh(&waiting_locks_spinlock);
- spin_lock_bh(&export->exp_bl_list_lock);
- list_del_init(&lock->l_exp_list);
- spin_unlock_bh(&export->exp_bl_list_lock);
-
- do_dump++;
- class_fail_export(export);
+ /* Check if we need to prolong timeout */
+ if (!OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_HPREQ_TIMEOUT) &&
+ lock->l_callback_timeout != 0 && /* not AST error */
+ ldlm_lock_busy(lock)) {
+ LDLM_DEBUG(lock, "prolong the busy lock");
+ lock_res_and_lock(lock);
+ ldlm_add_waiting_lock(lock,
+ ldlm_bl_timeout(lock) >> 1);
+ unlock_res_and_lock(lock);
+ } else {
+ spin_lock_bh(&export->exp_bl_list_lock);
+ list_del_init(&lock->l_exp_list);
+ spin_unlock_bh(&export->exp_bl_list_lock);
+
+ LDLM_ERROR(lock,
+ "lock callback timer expired after %llds: evicting client at %s ",
+ ktime_get_real_seconds() -
+ lock->l_blast_sent,
+ obd_export_nid2str(export));
+ ldlm_lock_to_ns(lock)->ns_timeouts++;
+ do_dump++;
+ class_fail_export(export);
+ }
class_export_lock_put(export, lock);
-
/* release extra ref grabbed by ldlm_add_waiting_lock()
* or ldlm_failed_ast() */
LDLM_LOCK_RELEASE(lock);
libcfs_debug_dumplog();
}
- if (expired_lock_thread.elt_state == ELT_TERMINATE)
+ if (expired_lock_thread_state == ELT_TERMINATE)
break;
}
- expired_lock_thread.elt_state = ELT_STOPPED;
- wake_up(&expired_lock_thread.elt_waitq);
+ expired_lock_thread_state = ELT_STOPPED;
+ wake_up(&expired_lock_wait_queue);
RETURN(0);
}
-static int ldlm_add_waiting_lock(struct ldlm_lock *lock);
-static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, int seconds);
-
/**
* Check if there is a request in the export request list
* which prevents the lock canceling.
if (lock->l_export == NULL)
return 0;
- spin_lock_bh(&lock->l_export->exp_rpc_lock);
+ spin_lock(&lock->l_export->exp_rpc_lock);
list_for_each_entry(req, &lock->l_export->exp_hp_rpcs,
rq_exp_list) {
if (req->rq_ops->hpreq_lock_match) {
break;
}
}
- spin_unlock_bh(&lock->l_export->exp_rpc_lock);
+ spin_unlock(&lock->l_export->exp_rpc_lock);
RETURN(match);
}
/* This is called from within a timer interrupt and cannot schedule */
-static void waiting_locks_callback(unsigned long unused)
+static void waiting_locks_callback(TIMER_DATA_TYPE unused)
{
struct ldlm_lock *lock;
int need_dump = 0;
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()) ||
- (lock->l_req_mode == LCK_GROUP))
- break;
-
- /* 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);
-
- spin_unlock_bh(&waiting_locks_spinlock);
- LDLM_DEBUG(lock, "prolong the busy lock");
- ldlm_refresh_waiting_lock(lock,
- ldlm_bl_timeout(lock) >> 1);
- spin_lock_bh(&waiting_locks_spinlock);
-
- if (!cont) {
- LDLM_LOCK_RELEASE(lock);
- break;
- }
-
- LDLM_LOCK_RELEASE(lock);
- continue;
- }
- ldlm_lock_to_ns(lock)->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));
+ l_pending_chain);
+ if (lock->l_callback_timeout > ktime_get_seconds() ||
+ lock->l_req_mode == LCK_GROUP)
+ break;
/* 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 */
list_del(&lock->l_pending_chain);
- list_add(&lock->l_pending_chain,
- &expired_lock_thread.elt_expired_locks);
+ list_add(&lock->l_pending_chain, &expired_lock_list);
need_dump = 1;
}
- if (!list_empty(&expired_lock_thread.elt_expired_locks)) {
+ if (!list_empty(&expired_lock_list)) {
if (obd_dump_on_timeout && need_dump)
- expired_lock_thread.elt_dump = __LINE__;
+ expired_lock_dump = __LINE__;
- wake_up(&expired_lock_thread.elt_waitq);
+ wake_up(&expired_lock_wait_queue);
}
- /*
- * Make sure the timer will fire again if we have any locks
- * left.
- */
+ /*
+ * Make sure the timer will fire again if we have any locks
+ * left.
+ */
if (!list_empty(&waiting_locks_list)) {
- cfs_time_t timeout_rounded;
+ unsigned long timeout_jiffies;
+
lock = 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);
- }
+ l_pending_chain);
+ timeout_jiffies = cfs_time_seconds(lock->l_callback_timeout);
+ mod_timer(&waiting_locks_timer, timeout_jiffies);
+ }
spin_unlock_bh(&waiting_locks_spinlock);
}
*
* Called with the namespace lock held.
*/
-static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, int seconds)
+static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, time64_t seconds)
{
- cfs_time_t timeout;
- cfs_time_t timeout_rounded;
+ unsigned long timeout_jiffies;
+ time64_t timeout;
if (!list_empty(&lock->l_pending_chain))
return 0;
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)))
+ timeout = ktime_get_seconds() + seconds;
+ if (likely(timeout > lock->l_callback_timeout))
lock->l_callback_timeout = timeout;
- timeout_rounded = round_timeout(lock->l_callback_timeout);
+ timeout_jiffies = cfs_time_seconds(lock->l_callback_timeout);
- 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. */
- /* FIFO */
+ if (time_before(timeout_jiffies, waiting_locks_timer.expires) ||
+ !timer_pending(&waiting_locks_timer))
+ mod_timer(&waiting_locks_timer, timeout_jiffies);
+
+ /* 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 */
list_add_tail(&lock->l_pending_chain, &waiting_locks_list);
- return 1;
+ return 1;
+}
+
+static void ldlm_add_blocked_lock(struct ldlm_lock *lock)
+{
+ spin_lock_bh(&lock->l_export->exp_bl_list_lock);
+ if (list_empty(&lock->l_exp_list)) {
+ if (lock->l_granted_mode != lock->l_req_mode)
+ list_add_tail(&lock->l_exp_list,
+ &lock->l_export->exp_bl_list);
+ else
+ list_add(&lock->l_exp_list,
+ &lock->l_export->exp_bl_list);
+ }
+ spin_unlock_bh(&lock->l_export->exp_bl_list_lock);
+
+ /* A blocked lock is added. Adjust the position in
+ * the stale list if the export is in the list.
+ * If export is stale and not in the list - it is being
+ * processed and will be placed on the right position
+ * on obd_stale_export_put(). */
+ if (!list_empty(&lock->l_export->exp_stale_list))
+ obd_stale_export_adjust(lock->l_export);
}
-static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
+static int ldlm_add_waiting_lock(struct ldlm_lock *lock, time64_t timeout)
{
int ret;
- int timeout = ldlm_bl_timeout(lock);
/* NB: must be called with hold of lock_res_and_lock() */
LASSERT(ldlm_is_res_locked(lock));
- ldlm_set_waited(lock);
-
LASSERT(!ldlm_is_cancel_on_block(lock));
+ /* Do not put cross-MDT lock in the waiting list, since we
+ * will not evict it due to timeout for now */
+ if (lock->l_export != NULL &&
+ (exp_connect_flags(lock->l_export) & OBD_CONNECT_MDS_MDS))
+ return 0;
+
spin_lock_bh(&waiting_locks_spinlock);
+ if (ldlm_is_cancel(lock)) {
+ spin_unlock_bh(&waiting_locks_spinlock);
+ return 0;
+ }
+
if (ldlm_is_destroyed(lock)) {
- static cfs_time_t next;
+ static time64_t next;
+
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);
+ if (ktime_get_seconds() > next) {
+ next = ktime_get_seconds() + 14400;
libcfs_debug_dumpstack(NULL);
}
return 0;
}
- lock->l_last_activity = cfs_time_current_sec();
+ ldlm_set_waited(lock);
+ lock->l_blast_sent = ktime_get_real_seconds();
ret = __ldlm_add_waiting_lock(lock, timeout);
if (ret) {
/* grab ref on the lock if it has been added to the
}
spin_unlock_bh(&waiting_locks_spinlock);
- if (ret) {
- spin_lock_bh(&lock->l_export->exp_bl_list_lock);
- if (list_empty(&lock->l_exp_list))
- list_add(&lock->l_exp_list,
- &lock->l_export->exp_bl_list);
- spin_unlock_bh(&lock->l_export->exp_bl_list_lock);
- }
+ if (ret)
+ ldlm_add_blocked_lock(lock);
- LDLM_DEBUG(lock, "%sadding to wait list(timeout: %d, AT: %s)",
+ LDLM_DEBUG(lock, "%sadding to wait list(timeout: %lld, AT: %s)",
ret == 0 ? "not re-" : "", timeout,
AT_OFF ? "off" : "on");
return ret;
/* Removing the head of the list, adjust timer. */
if (list_next == &waiting_locks_list) {
/* No more, just cancel. */
- cfs_timer_disarm(&waiting_locks_timer);
+ del_timer(&waiting_locks_timer);
} else {
struct ldlm_lock *next;
+
next = list_entry(list_next, struct ldlm_lock,
- l_pending_chain);
- cfs_timer_arm(&waiting_locks_timer,
- round_timeout(next->l_callback_timeout));
+ l_pending_chain);
+ mod_timer(&waiting_locks_timer,
+ cfs_time_seconds(next->l_callback_timeout));
}
}
list_del_init(&lock->l_pending_chain);
spin_lock_bh(&waiting_locks_spinlock);
ret = __ldlm_del_waiting_lock(lock);
+ ldlm_clear_waited(lock);
spin_unlock_bh(&waiting_locks_spinlock);
/* remove the lock out of export blocking list */
LDLM_DEBUG(lock, "%s", ret == 0 ? "wasn't waiting" : "removed");
return ret;
}
-EXPORT_SYMBOL(ldlm_del_waiting_lock);
/**
* Prolong the contended lock waiting time.
*
* Called with namespace lock held.
*/
-int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, int timeout)
+int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, time64_t timeout)
{
if (lock->l_export == NULL) {
/* We don't have a "waiting locks list" on clients. */
return 0;
}
+ if (exp_connect_flags(lock->l_export) & OBD_CONNECT_MDS_MDS) {
+ /* We don't have a "waiting locks list" on OSP. */
+ LDLM_DEBUG(lock, "MDS-MDS lock: no-op");
+ return 0;
+ }
+
spin_lock_bh(&waiting_locks_spinlock);
if (list_empty(&lock->l_pending_chain)) {
RETURN(0);
}
-int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, int timeout)
+int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, time64_t timeout)
{
RETURN(0);
}
*
* \retval timeout in seconds to wait for the client reply
*/
-unsigned int ldlm_bl_timeout(struct ldlm_lock *lock)
+time64_t ldlm_bl_timeout(struct ldlm_lock *lock)
{
- unsigned int timeout;
+ time64_t timeout;
if (AT_OFF)
return obd_timeout / 2;
* It would be nice to have some kind of "early reply" mechanism for
* lock callbacks too... */
timeout = at_get(&lock->l_export->exp_bl_lock_at);
- return max(timeout + (timeout >> 1), ldlm_enqueue_min);
+ return max(timeout + (timeout >> 1), (time64_t)ldlm_enqueue_min);
}
EXPORT_SYMBOL(ldlm_bl_timeout);
/* the lock was not in any list, grab an extra ref before adding
* the lock to the expired list */
LDLM_LOCK_GET(lock);
- list_add(&lock->l_pending_chain,
- &expired_lock_thread.elt_expired_locks);
- wake_up(&expired_lock_thread.elt_waitq);
+ lock->l_callback_timeout = 0; /* differentiate it from expired locks */
+ list_add(&lock->l_pending_chain, &expired_lock_list);
+ wake_up(&expired_lock_wait_queue);
spin_unlock_bh(&waiting_locks_spinlock);
}
/**
* Perform lock cleanup if AST reply came with error.
*/
-static int ldlm_handle_ast_error(struct ldlm_lock *lock,
- struct ptlrpc_request *req, int rc,
- const char *ast_type)
-{
- lnet_process_id_t peer = req->rq_import->imp_connection->c_peer;
-
- if (rc == -ETIMEDOUT || rc == -EINTR || rc == -ENOTCONN) {
- LASSERT(lock->l_export);
- if (lock->l_export->exp_libclient) {
- LDLM_DEBUG(lock, "%s AST to liblustre client (nid %s)"
- " timeout, just cancelling lock", ast_type,
- libcfs_nid2str(peer.nid));
- ldlm_lock_cancel(lock);
- rc = -ERESTART;
- } else if (ldlm_is_cancel(lock)) {
- LDLM_DEBUG(lock, "%s AST timeout from nid %s, but "
- "cancel was received (AST reply lost?)",
- ast_type, libcfs_nid2str(peer.nid));
- ldlm_lock_cancel(lock);
- rc = -ERESTART;
- } else {
- ldlm_del_waiting_lock(lock);
- ldlm_failed_ast(lock, rc, ast_type);
- }
- } else if (rc) {
- if (rc == -EINVAL) {
- struct ldlm_resource *res = lock->l_resource;
- LDLM_DEBUG(lock, "client (nid %s) returned %d"
- " from %s AST - normal race",
- libcfs_nid2str(peer.nid),
- req->rq_repmsg ?
- lustre_msg_get_status(req->rq_repmsg) : -1,
- ast_type);
- if (res) {
- /* update lvbo to return proper attributes.
- * see bug 23174 */
- ldlm_resource_getref(res);
- ldlm_res_lvbo_update(res, NULL, 1);
- ldlm_resource_putref(res);
- }
-
- } else {
- LDLM_ERROR(lock, "client (nid %s) returned %d: rc = %d "
- "from %s AST", libcfs_nid2str(peer.nid),
+static int ldlm_handle_ast_error(const struct lu_env *env,
+ struct ldlm_lock *lock,
+ struct ptlrpc_request *req, int rc,
+ const char *ast_type)
+{
+ struct lnet_process_id peer = req->rq_import->imp_connection->c_peer;
+
+ if (!req->rq_replied || (rc && rc != -EINVAL)) {
+ if (ldlm_is_cancel(lock)) {
+ LDLM_DEBUG(lock,
+ "%s AST (req@%p x%llu) timeout from nid %s, but cancel was received (AST reply lost?)",
+ ast_type, req, req->rq_xid,
+ libcfs_nid2str(peer.nid));
+ ldlm_lock_cancel(lock);
+ rc = -ERESTART;
+ } else if (rc == -ENODEV || rc == -ESHUTDOWN ||
+ (rc == -EIO &&
+ req->rq_import->imp_state == LUSTRE_IMP_CLOSED)) {
+ /* Upon umount process the AST fails because cannot be
+ * sent. This shouldn't lead to the client eviction.
+ * -ENODEV error is returned by ptl_send_rpc() for
+ * new request in such import.
+ * -SHUTDOWN is returned by ptlrpc_import_delay_req()
+ * if imp_invalid is set or obd_no_recov.
+ * Meanwhile there is also check for LUSTRE_IMP_CLOSED
+ * in ptlrpc_import_delay_req() as well with -EIO code.
+ * In all such cases errors are ignored.
+ */
+ LDLM_DEBUG(lock, "%s AST can't be sent due to a server"
+ " %s failure or umount process: rc = %d\n",
+ ast_type,
+ req->rq_import->imp_obd->obd_name, rc);
+ } else {
+ LDLM_ERROR(lock,
+ "client (nid %s) %s %s AST (req@%p x%llu status %d rc %d), evict it",
+ libcfs_nid2str(peer.nid),
+ req->rq_replied ? "returned error from" :
+ "failed to reply to",
+ ast_type, req, req->rq_xid,
(req->rq_repmsg != NULL) ?
lustre_msg_get_status(req->rq_repmsg) : 0,
- rc, ast_type);
- }
- ldlm_lock_cancel(lock);
- /* Server-side AST functions are called from ldlm_reprocess_all,
- * which needs to be told to please restart its reprocessing. */
- rc = -ERESTART;
- }
+ rc);
+ ldlm_failed_ast(lock, rc, ast_type);
+ }
+ return rc;
+ }
- return rc;
+ if (rc == -EINVAL) {
+ struct ldlm_resource *res = lock->l_resource;
+
+ LDLM_DEBUG(lock,
+ "client (nid %s) returned %d from %s AST (req@%p x%llu) - normal race",
+ libcfs_nid2str(peer.nid),
+ req->rq_repmsg ?
+ lustre_msg_get_status(req->rq_repmsg) : -1,
+ ast_type, req, req->rq_xid);
+ if (res) {
+ /* update lvbo to return proper attributes.
+ * see bug 23174 */
+ ldlm_resource_getref(res);
+ ldlm_lvbo_update(env, res, lock, NULL, 1);
+ ldlm_resource_putref(res);
+ }
+ ldlm_lock_cancel(lock);
+ rc = -ERESTART;
+ }
+
+ return rc;
}
static int ldlm_cb_interpret(const struct lu_env *env,
* - Glimpse callback of remote lock might return
* -ELDLM_NO_LOCK_DATA when inode is cleared. LU-274
*/
- if (rc == -ELDLM_NO_LOCK_DATA) {
+ if (unlikely(arg->gl_interpret_reply)) {
+ rc = arg->gl_interpret_reply(env, req, data, rc);
+ } else if (rc == -ELDLM_NO_LOCK_DATA) {
LDLM_DEBUG(lock, "lost race - client has a lock but no "
"inode");
- ldlm_res_lvbo_update(lock->l_resource, NULL, 1);
+ ldlm_lvbo_update(env, lock->l_resource, lock, NULL, 1);
} else if (rc != 0) {
- rc = ldlm_handle_ast_error(lock, req, rc, "glimpse");
+ rc = ldlm_handle_ast_error(env, lock, req,
+ rc, "glimpse");
} else {
- rc = ldlm_res_lvbo_update(lock->l_resource, req, 1);
+ rc = ldlm_lvbo_update(env, lock->l_resource,
+ lock, req, 1);
}
break;
case LDLM_BL_CALLBACK:
if (rc != 0)
- rc = ldlm_handle_ast_error(lock, req, rc, "blocking");
+ rc = ldlm_handle_ast_error(env, lock, req,
+ rc, "blocking");
break;
case LDLM_CP_CALLBACK:
if (rc != 0)
- rc = ldlm_handle_ast_error(lock, req, rc, "completion");
+ rc = ldlm_handle_ast_error(env, lock, req,
+ rc, "completion");
break;
default:
LDLM_ERROR(lock, "invalid opcode for lock callback %d",
static void ldlm_update_resend(struct ptlrpc_request *req, void *data)
{
- struct ldlm_cb_async_args *ca = data;
- struct ldlm_lock *lock = ca->ca_lock;
+ struct ldlm_cb_async_args *ca = data;
+ struct ldlm_lock *lock = ca->ca_lock;
ldlm_refresh_waiting_lock(lock, ldlm_bl_timeout(lock));
}
RETURN_EXIT;
}
- spin_lock_bh(&lock->l_export->exp_rpc_lock);
+ spin_lock(&lock->l_export->exp_rpc_lock);
list_for_each_entry(req, &lock->l_export->exp_hp_rpcs,
rq_exp_list) {
/* Do not process requests that were not yet added to there
req->rq_ops->hpreq_lock_match(req, lock))
ptlrpc_nrs_req_hp_move(req);
}
- spin_unlock_bh(&lock->l_export->exp_rpc_lock);
+ spin_unlock(&lock->l_export->exp_rpc_lock);
EXIT;
}
/* Don't need to do anything here. */
RETURN(0);
+ if (OBD_FAIL_PRECHECK(OBD_FAIL_LDLM_SRV_BL_AST)) {
+ LDLM_DEBUG(lock, "dropping BL AST");
+ RETURN(0);
+ }
+
LASSERT(lock);
LASSERT(data != NULL);
if (lock->l_export->exp_obd->obd_recovering != 0)
ldlm_lock_reorder_req(lock);
- 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 = 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);
- CLASSERT(sizeof(*ca) <= sizeof(req->rq_async_args));
- ca = ptlrpc_req_async_args(req);
- ca->ca_set_arg = arg;
- ca->ca_lock = lock;
+ CLASSERT(sizeof(*ca) <= sizeof(req->rq_async_args));
+ ca = ptlrpc_req_async_args(req);
+ ca->ca_set_arg = arg;
+ ca->ca_lock = lock;
- req->rq_interpret_reply = ldlm_cb_interpret;
+ req->rq_interpret_reply = ldlm_cb_interpret;
lock_res_and_lock(lock);
- if (lock->l_granted_mode != lock->l_req_mode) {
- /* this blocking AST will be communicated as part of the
- * completion AST instead */
+ if (ldlm_is_destroyed(lock)) {
+ /* What's the point? */
unlock_res_and_lock(lock);
-
ptlrpc_req_finished(req);
- LDLM_DEBUG(lock, "lock not granted, not sending blocking AST");
RETURN(0);
}
- if (ldlm_is_destroyed(lock)) {
- /* What's the point? */
+ if (lock->l_granted_mode != lock->l_req_mode) {
+ /* this blocking AST will be communicated as part of the
+ * completion AST instead */
+ ldlm_add_blocked_lock(lock);
+ ldlm_set_waited(lock);
unlock_res_and_lock(lock);
+
ptlrpc_req_finished(req);
+ LDLM_DEBUG(lock, "lock not granted, not sending blocking AST");
RETURN(0);
}
LDLM_DEBUG(lock, "server preparing blocking AST");
ptlrpc_request_set_replen(req);
+ ldlm_set_cbpending(lock);
if (instant_cancel) {
unlock_res_and_lock(lock);
ldlm_lock_cancel(lock);
req->rq_no_resend = 1;
} else {
LASSERT(lock->l_granted_mode == lock->l_req_mode);
- ldlm_add_waiting_lock(lock);
+ ldlm_add_waiting_lock(lock, ldlm_bl_timeout(lock));
unlock_res_and_lock(lock);
/* Do not resend after lock callback timeout */
if (AT_OFF)
req->rq_timeout = ldlm_get_rq_timeout();
- lock->l_last_activity = cfs_time_current_sec();
-
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,
RETURN(rc);
}
-EXPORT_SYMBOL(ldlm_server_blocking_ast);
/**
* ->l_completion_ast callback for a remote lock in server namespace.
LASSERT(lock != NULL);
LASSERT(data != NULL);
- if (OBD_FAIL_PRECHECK(OBD_FAIL_OST_LDLM_REPLY_NET)) {
+ if (OBD_FAIL_PRECHECK(OBD_FAIL_LDLM_SRV_CP_AST)) {
LDLM_DEBUG(lock, "dropping CP AST");
RETURN(0);
}
lvb_len = 0;
req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_CLIENT, lvb_len);
- rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_CP_CALLBACK);
- if (rc) {
- ptlrpc_request_free(req);
- RETURN(rc);
- }
+ rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_CP_CALLBACK);
+ if (rc) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
- CLASSERT(sizeof(*ca) <= sizeof(req->rq_async_args));
- ca = ptlrpc_req_async_args(req);
- ca->ca_set_arg = arg;
- ca->ca_lock = lock;
+ CLASSERT(sizeof(*ca) <= sizeof(req->rq_async_args));
+ ca = ptlrpc_req_async_args(req);
+ ca->ca_set_arg = arg;
+ ca->ca_lock = lock;
- req->rq_interpret_reply = ldlm_cb_interpret;
- body = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ req->rq_interpret_reply = ldlm_cb_interpret;
+ body = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
- body->lock_handle[0] = lock->l_remote_handle;
+ body->lock_handle[0] = lock->l_remote_handle;
body->lock_flags = ldlm_flags_to_wire(flags);
ldlm_lock2desc(lock, &body->lock_desc);
if (lvb_len > 0) {
void *lvb = req_capsule_client_get(&req->rq_pill, &RMF_DLM_LVB);
+ const struct lu_env *env = NULL;
- lvb_len = ldlm_lvbo_fill(lock, lvb, lvb_len);
+ if (req->rq_svc_thread)
+ env = req->rq_svc_thread->t_env;
+
+ lvb_len = ldlm_lvbo_fill(env, lock, lvb, &lvb_len);
if (lvb_len < 0) {
/* We still need to send the RPC to wake up the blocked
* enqueue thread on the client.
}
}
- lock->l_last_activity = cfs_time_current_sec();
-
LDLM_DEBUG(lock, "server preparing completion AST");
ptlrpc_request_set_replen(req);
lock_res_and_lock(lock);
} else {
/* start the lock-timeout clock */
- ldlm_add_waiting_lock(lock);
+ ldlm_add_waiting_lock(lock, ldlm_bl_timeout(lock));
/* Do not resend after lock callback timeout */
req->rq_delay_limit = ldlm_bl_timeout(lock);
req->rq_resend_cb = ldlm_update_resend;
RETURN(lvb_len < 0 ? lvb_len : rc);
}
-EXPORT_SYMBOL(ldlm_server_completion_ast);
/**
* Server side ->l_glimpse_ast handler for client locks.
if (arg->gl_desc != NULL)
/* There is a glimpse descriptor to pack */
- req_fmt = &RQF_LDLM_GL_DESC_CALLBACK;
+ req_fmt = &RQF_LDLM_GL_CALLBACK_DESC;
else
req_fmt = &RQF_LDLM_GL_CALLBACK;
*desc = *arg->gl_desc;
}
- 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);
+ 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);
CLASSERT(sizeof(*ca) <= sizeof(req->rq_async_args));
ca = ptlrpc_req_async_args(req);
if (AT_OFF)
req->rq_timeout = ldlm_get_rq_timeout();
- lock->l_last_activity = cfs_time_current_sec();
-
req->rq_interpret_reply = ldlm_cb_interpret;
if (lock->l_export && lock->l_export->exp_nid_stats &&
}
EXPORT_SYMBOL(ldlm_request_lock);
-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 for enqueue. This is called by ptlrpc
* service threads to carry out client lock enqueueing requests.
*/
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 ptlrpc_request *req,
+ const struct ldlm_request *dlm_req,
+ const struct ldlm_callback_suite *cbs)
{
- struct ldlm_reply *dlm_rep;
+ struct ldlm_reply *dlm_rep;
__u64 flags;
- ldlm_error_t err = ELDLM_OK;
- struct ldlm_lock *lock = NULL;
- void *cookie = NULL;
- int rc = 0;
+ enum ldlm_error err = ELDLM_OK;
+ struct ldlm_lock *lock = NULL;
+ void *cookie = NULL;
+ int rc = 0;
struct ldlm_resource *res = NULL;
- ENTRY;
+ const struct lu_env *env = req->rq_svc_thread->t_env;
+ ENTRY;
- LDLM_DEBUG_NOLOCK("server-side enqueue handler START");
+ LDLM_DEBUG_NOLOCK("server-side enqueue handler START");
ldlm_request_cancel(req, dlm_req, LDLM_ENQUEUE_CANCEL_OFF, LATF_SKIP);
flags = ldlm_flags_from_wire(dlm_req->lock_flags);
- LASSERT(req->rq_export);
+ LASSERT(req->rq_export);
- if (ptlrpc_req2svc(req)->srv_stats != NULL)
+ /* for intent enqueue the stat will be updated inside intent policy */
+ if (ptlrpc_req2svc(req)->srv_stats != NULL &&
+ !(dlm_req->lock_flags & LDLM_FL_HAS_INTENT))
ldlm_svc_get_eopc(dlm_req, ptlrpc_req2svc(req)->srv_stats);
if (req->rq_export && req->rq_export->exp_nid_stats &&
GOTO(out, rc = -EFAULT);
}
- if (exp_connect_flags(req->rq_export) & OBD_CONNECT_IBITS) {
- if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
- LDLM_PLAIN)) {
- DEBUG_REQ(D_ERROR, req,
- "PLAIN lock request from IBITS client?");
- GOTO(out, rc = -EPROTO);
- }
- } else if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
- LDLM_IBITS)) {
- DEBUG_REQ(D_ERROR, req,
- "IBITS lock request from unaware client?");
- GOTO(out, rc = -EPROTO);
- }
-
-#if 0
- /* 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) */
-
- /* INODEBITS_INTEROP: Perform conversion from plain lock to
- * inodebits lock if client does not support them. */
- if (!(exp_connect_flags(req->rq_export) & OBD_CONNECT_IBITS) &&
- (dlm_req->lock_desc.l_resource.lr_type == LDLM_PLAIN)) {
- dlm_req->lock_desc.l_resource.lr_type = LDLM_IBITS;
- dlm_req->lock_desc.l_policy_data.l_inodebits.bits =
- MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
- if (dlm_req->lock_desc.l_req_mode == LCK_PR)
- dlm_req->lock_desc.l_req_mode = LCK_CR;
- }
-#endif
-
if (unlikely((flags & LDLM_FL_REPLAY) ||
(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))) {
/* 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_DLMTRACE, req, "found existing lock cookie "
- LPX64, lock->l_handle.h_cookie);
+ DEBUG_REQ(D_DLMTRACE, req, "found existing lock cookie %#llx",
+ lock->l_handle.h_cookie);
flags |= LDLM_FL_RESENT;
GOTO(existing_lock, rc = 0);
}
- }
+ } else {
+ if (ldlm_reclaim_full()) {
+ DEBUG_REQ(D_DLMTRACE, req, "Too many granted locks, "
+ "reject current enqueue request and let the "
+ "client retry later.\n");
+ GOTO(out, rc = -EINPROGRESS);
+ }
+ }
/* The lock's callback data might be set in the policy function */
lock = ldlm_lock_create(ns, &dlm_req->lock_desc.l_resource.lr_name,
res = lock->l_resource;
if (!(flags & LDLM_FL_REPLAY)) {
/* non-replayed lock, delayed lvb init may need to be done */
- rc = ldlm_lvbo_init(res);
+ rc = ldlm_lvbo_init(env, res);
if (rc < 0) {
LDLM_DEBUG(lock, "delayed lvb init failed (rc %d)", rc);
GOTO(out, rc);
* without them. */
lock->l_flags |= ldlm_flags_from_wire(dlm_req->lock_flags &
LDLM_FL_INHERIT_MASK);
-existing_lock:
+ ldlm_convert_policy_to_local(req->rq_export,
+ dlm_req->lock_desc.l_resource.lr_type,
+ &dlm_req->lock_desc.l_policy_data,
+ &lock->l_policy_data);
+ if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT)
+ lock->l_req_extent = lock->l_policy_data.l_extent;
+
+existing_lock:
if (flags & LDLM_FL_HAS_INTENT) {
/* In this case, the reply buffer is allocated deep in
* local_lock_enqueue by the policy function. */
req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB,
RCL_SERVER, ldlm_lvbo_size(lock));
- if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR))
- GOTO(out, rc = -ENOMEM);
-
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- GOTO(out, rc);
- }
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR))
+ GOTO(out, rc = -ENOMEM);
- if (dlm_req->lock_desc.l_resource.lr_type != LDLM_PLAIN)
- ldlm_convert_policy_to_local(req->rq_export,
- dlm_req->lock_desc.l_resource.lr_type,
- &dlm_req->lock_desc.l_policy_data,
- &lock->l_policy_data);
- if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT)
- lock->l_req_extent = lock->l_policy_data.l_extent;
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ GOTO(out, rc);
+ }
- err = ldlm_lock_enqueue(ns, &lock, cookie, &flags);
+ err = ldlm_lock_enqueue(env, ns, &lock, cookie, &flags);
if (err) {
if ((int)err < 0)
rc = (int)err;
GOTO(out, err);
}
- dlm_rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
+ dlm_rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
+
+ ldlm_lock2desc(lock, &dlm_rep->lock_desc);
+ ldlm_lock2handle(lock, &dlm_rep->lock_handle);
- ldlm_lock2desc(lock, &dlm_rep->lock_desc);
- ldlm_lock2handle(lock, &dlm_rep->lock_handle);
+ if (lock && lock->l_resource->lr_type == LDLM_EXTENT)
+ OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_BL_EVICT, 6);
/* We never send a blocking AST until the lock is granted, but
* we can tell it right now */
LDLM_ERROR(lock, "lock on destroyed export %p", req->rq_export);
rc = -ENOTCONN;
} else if (ldlm_is_ast_sent(lock)) {
+ /* fill lock desc for possible lock convert */
+ if (lock->l_blocking_lock &&
+ lock->l_resource->lr_type == LDLM_IBITS) {
+ struct ldlm_lock *bl_lock = lock->l_blocking_lock;
+ struct ldlm_lock_desc *rep_desc = &dlm_rep->lock_desc;
+
+ LDLM_DEBUG(lock,
+ "save blocking bits %llx in granted lock",
+ bl_lock->l_policy_data.l_inodebits.bits);
+ /* If lock is blocked then save blocking ibits
+ * in returned lock policy for the possible lock
+ * convert on a client.
+ */
+ rep_desc->l_policy_data.l_inodebits.cancel_bits =
+ bl_lock->l_policy_data.l_inodebits.bits;
+ }
dlm_rep->lock_flags |= ldlm_flags_to_wire(LDLM_FL_AST_SENT);
if (lock->l_granted_mode == lock->l_req_mode) {
/*
unlock_res_and_lock(lock);
ldlm_lock_cancel(lock);
lock_res_and_lock(lock);
- } else
- ldlm_add_waiting_lock(lock);
- }
- }
- /* Make sure we never ever grant usual metadata locks to liblustre
- clients */
- 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 (unlikely(!ldlm_is_cancel_on_block(lock) ||
- !(dlm_rep->lock_flags & LDLM_FL_CANCEL_ON_BLOCK))){
- CERROR("Granting sync lock to libclient. "
- "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 = 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);
- }
- }
+ } else {
+ ldlm_add_waiting_lock(lock,
+ ldlm_bl_timeout(lock));
+ }
}
}
+ unlock_res_and_lock(lock);
- unlock_res_and_lock(lock);
-
- EXIT;
+ EXIT;
out:
req->rq_status = rc ?: err; /* return either error - bug 11190 */
if (!req->rq_packed_final) {
LDLM_DEBUG(lock, "server-side enqueue handler, sending reply"
"(err=%d, rc=%d)", err, rc);
- if (rc == 0) {
- if (req_capsule_has_field(&req->rq_pill, &RMF_DLM_LVB,
- RCL_SERVER) &&
- ldlm_lvbo_size(lock) > 0) {
- void *buf;
- int buflen;
-
- buf = req_capsule_server_get(&req->rq_pill,
- &RMF_DLM_LVB);
- LASSERTF(buf != NULL, "req %p, lock %p\n",
- req, lock);
- buflen = req_capsule_get_size(&req->rq_pill,
- &RMF_DLM_LVB, RCL_SERVER);
- /* non-replayed lock, delayed lvb init may
- * need to be occur now */
- if ((buflen > 0) && !(flags & LDLM_FL_REPLAY)) {
- buflen = ldlm_lvbo_fill(lock, buf,
- buflen);
- if (buflen >= 0)
- req_capsule_shrink(
+ if (rc == 0 &&
+ req_capsule_has_field(&req->rq_pill, &RMF_DLM_LVB,
+ RCL_SERVER) &&
+ ldlm_lvbo_size(lock) > 0) {
+ void *buf;
+ int buflen;
+
+retry:
+ buf = req_capsule_server_get(&req->rq_pill,
+ &RMF_DLM_LVB);
+ LASSERTF(buf != NULL, "req %p, lock %p\n", req, lock);
+ buflen = req_capsule_get_size(&req->rq_pill,
+ &RMF_DLM_LVB, RCL_SERVER);
+ /* non-replayed lock, delayed lvb init may
+ * need to be occur now
+ */
+ if ((buflen > 0) && !(flags & LDLM_FL_REPLAY)) {
+ int rc2;
+
+ rc2 = ldlm_lvbo_fill(env, lock, buf, &buflen);
+ if (rc2 >= 0) {
+ req_capsule_shrink(&req->rq_pill,
+ &RMF_DLM_LVB,
+ rc2, RCL_SERVER);
+ } else if (rc2 == -ERANGE) {
+ rc2 = req_capsule_server_grow(
&req->rq_pill,
- &RMF_DLM_LVB,
- buflen, RCL_SERVER);
- else
- rc = buflen;
- } else if (flags & LDLM_FL_REPLAY) {
- /* no LVB resend upon replay */
- if (buflen > 0)
+ &RMF_DLM_LVB, buflen);
+ if (!rc2) {
+ goto retry;
+ } else {
+ /* if we can't grow the buffer,
+ * it's ok to return empty lvb
+ * to client.
+ */
req_capsule_shrink(
&req->rq_pill,
- &RMF_DLM_LVB,
- 0, RCL_SERVER);
- else
- rc = buflen;
+ &RMF_DLM_LVB, 0,
+ RCL_SERVER);
+ }
} else {
- rc = buflen;
+ rc = rc2;
}
+ } else if (flags & LDLM_FL_REPLAY) {
+ /* no LVB resend upon replay */
+ if (buflen > 0)
+ req_capsule_shrink(&req->rq_pill,
+ &RMF_DLM_LVB,
+ 0, RCL_SERVER);
+ else
+ rc = buflen;
+ } else {
+ rc = buflen;
}
}
- if (rc != 0) {
- lock_res_and_lock(lock);
- ldlm_resource_unlink_lock(lock);
- ldlm_lock_destroy_nolock(lock);
- unlock_res_and_lock(lock);
- }
+ if (rc != 0 && !(flags & LDLM_FL_RESENT)) {
+ if (lock->l_export) {
+ ldlm_lock_cancel(lock);
+ } else {
+ lock_res_and_lock(lock);
+ ldlm_resource_unlink_lock(lock);
+ ldlm_lock_destroy_nolock(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_RELEASE(lock);
- }
+ if (!err && !ldlm_is_cbpending(lock) &&
+ dlm_req->lock_desc.l_resource.lr_type != LDLM_FLOCK)
+ ldlm_reprocess_all(lock->l_resource);
- LDLM_DEBUG_NOLOCK("server-side enqueue handler END (lock %p, rc %d)",
- lock, rc);
+ LDLM_LOCK_RELEASE(lock);
+ }
- return rc;
-}
-EXPORT_SYMBOL(ldlm_handle_enqueue0);
+ LDLM_DEBUG_NOLOCK("server-side enqueue handler END (lock %p, rc %d)",
+ lock, rc);
-/**
- * Old-style LDLM main entry point for server code enqueue.
- */
-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;
}
-EXPORT_SYMBOL(ldlm_handle_enqueue);
/**
* Main LDLM entry point for server code to process lock conversion requests.
*/
int ldlm_handle_convert0(struct ptlrpc_request *req,
- const struct ldlm_request *dlm_req)
+ const struct ldlm_request *dlm_req)
{
- struct ldlm_reply *dlm_rep;
- struct ldlm_lock *lock;
- int rc;
- ENTRY;
-
- 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 = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- RETURN(rc);
+ struct obd_export *exp = req->rq_export;
+ struct ldlm_reply *dlm_rep;
+ struct ldlm_lock *lock;
+ int rc;
- dlm_rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
- dlm_rep->lock_flags = dlm_req->lock_flags;
+ ENTRY;
- lock = ldlm_handle2lock(&dlm_req->lock_handle[0]);
- if (!lock) {
- req->rq_status = LUSTRE_EINVAL;
- } else {
- void *res = NULL;
+ if (exp && exp->exp_nid_stats && exp->exp_nid_stats->nid_ldlm_stats)
+ lprocfs_counter_incr(exp->exp_nid_stats->nid_ldlm_stats,
+ LDLM_CONVERT - LDLM_FIRST_OPC);
- LDLM_DEBUG(lock, "server-side convert handler START");
+ 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_handle[0]);
+ if (lock) {
+ __u64 bits;
+ __u64 new;
+
+ bits = lock->l_policy_data.l_inodebits.bits;
+ new = dlm_req->lock_desc.l_policy_data.l_inodebits.bits;
+ LDLM_DEBUG(lock, "server-side convert handler START");
+
+ if (ldlm_is_cancel(lock)) {
+ LDLM_ERROR(lock, "convert on canceled lock!");
+ rc = ELDLM_NO_LOCK_DATA;
+ } else if (dlm_req->lock_desc.l_req_mode !=
+ lock->l_granted_mode) {
+ LDLM_ERROR(lock, "lock mode differs!");
+ rc = ELDLM_NO_LOCK_DATA;
+ } else if (bits == new) {
+ /* This can be valid situation if CONVERT RPCs are
+ * re-ordered. Just finish silently */
+ LDLM_DEBUG(lock, "lock is converted already!");
+ rc = ELDLM_OK;
+ } else {
+ lock_res_and_lock(lock);
+ if (ldlm_is_waited(lock))
+ ldlm_del_waiting_lock(lock);
+
+ ldlm_clear_cbpending(lock);
+ lock->l_policy_data.l_inodebits.cancel_bits = 0;
+ ldlm_inodebits_drop(lock, bits & ~new);
+ /* if lock is in a bl_ast list, remove it from the list
+ * here before reprocessing.
+ */
+ if (!list_empty(&lock->l_bl_ast)) {
+ ldlm_discard_bl_lock(lock);
+ } else {
+ /* in this case lock was taken from bl_ast list
+ * already by ldlm_work_bl_ast_lock() and lock
+ * must clear only some remaining states.
+ */
+ ldlm_clear_ast_sent(lock);
+ lock->l_bl_ast_run = 0;
+ ldlm_clear_blocking_lock(lock);
+ }
+ unlock_res_and_lock(lock);
- res = ldlm_lock_convert(lock, dlm_req->lock_desc.l_req_mode,
- &dlm_rep->lock_flags);
- if (res) {
- if (ldlm_del_waiting_lock(lock))
- LDLM_DEBUG(lock, "converted waiting lock");
- req->rq_status = 0;
- } else {
- req->rq_status = LUSTRE_EDEADLK;
- }
- }
+ ldlm_reprocess_all(lock->l_resource);
+ rc = ELDLM_OK;
+ }
- if (lock) {
- if (!req->rq_status)
- ldlm_reprocess_all(lock->l_resource);
- LDLM_DEBUG(lock, "server-side convert handler END");
- LDLM_LOCK_PUT(lock);
- } else
- LDLM_DEBUG_NOLOCK("server-side convert handler END");
+ if (rc == ELDLM_OK) {
+ dlm_rep->lock_handle = lock->l_remote_handle;
+ ldlm_ibits_policy_local_to_wire(&lock->l_policy_data,
+ &dlm_rep->lock_desc.l_policy_data);
+ }
- RETURN(0);
-}
-EXPORT_SYMBOL(ldlm_handle_convert0);
+ LDLM_DEBUG(lock, "server-side convert handler END, rc = %d",
+ rc);
+ LDLM_LOCK_PUT(lock);
+ } else {
+ rc = ELDLM_NO_LOCK_DATA;
+ LDLM_DEBUG_NOLOCK("server-side convert handler END, rc = %d",
+ rc);
+ }
-/**
- * Old-style main LDLM entry point for server code to process lock conversion
- * requests.
- */
-int ldlm_handle_convert(struct ptlrpc_request *req)
-{
- int rc;
- struct ldlm_request *dlm_req;
+ req->rq_status = rc;
- 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;
+ RETURN(0);
}
-EXPORT_SYMBOL(ldlm_handle_convert);
/**
* Cancel all the locks whose handles are packed into ldlm_request
const struct ldlm_request *dlm_req,
int first, enum lustre_at_flags flags)
{
+ const struct lu_env *env = req->rq_svc_thread->t_env;
struct ldlm_resource *res, *pres = NULL;
struct ldlm_lock *lock;
int i, count, done = 0;
lock = ldlm_handle2lock(&dlm_req->lock_handle[i]);
if (!lock) {
LDLM_DEBUG_NOLOCK("server-side cancel handler stale "
- "lock (cookie "LPU64")",
+ "lock (cookie %llu)",
dlm_req->lock_handle[i].cookie);
continue;
}
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;
- }
+ if (res != NULL) {
+ ldlm_resource_getref(res);
+ LDLM_RESOURCE_ADDREF(res);
+
+ if (!ldlm_is_discard_data(lock))
+ ldlm_lvbo_update(env, res, lock,
+ NULL, 1);
+ }
+ pres = res;
+ }
- if ((flags & LATF_STATS) && ldlm_is_ast_sent(lock)) {
- long delay = cfs_time_sub(cfs_time_current_sec(),
- lock->l_last_activity);
- LDLM_DEBUG(lock, "server cancels blocked lock after "
- CFS_DURATION_T"s", delay);
+ if ((flags & LATF_STATS) && ldlm_is_ast_sent(lock) &&
+ lock->l_blast_sent != 0) {
+ time64_t delay = ktime_get_real_seconds() -
+ lock->l_blast_sent;
+ LDLM_DEBUG(lock, "server cancels blocked lock after %llds",
+ (s64)delay);
at_measured(&lock->l_export->exp_bl_lock_at, delay);
}
ldlm_lock_cancel(lock);
RETURN(ptlrpc_reply(req));
}
-EXPORT_SYMBOL(ldlm_handle_cancel);
#endif /* HAVE_SERVER_SUPPORT */
/**
LDLM_DEBUG(lock, "client blocking AST callback handler");
lock_res_and_lock(lock);
+
+ /* set bits to cancel for this lock for possible lock convert */
+ if (ns_is_client(ns) && (lock->l_resource->lr_type == LDLM_IBITS)) {
+ /* Lock description contains policy of blocking lock,
+ * and its cancel_bits is used to pass conflicting bits.
+ * NOTE: ld can be NULL or can be not NULL but zeroed if
+ * passed from ldlm_bl_thread_blwi(), check below used bits
+ * in ld to make sure it is valid description.
+ */
+ if (ld && ld->l_policy_data.l_inodebits.bits)
+ lock->l_policy_data.l_inodebits.cancel_bits =
+ ld->l_policy_data.l_inodebits.cancel_bits;
+ /* if there is no valid ld and lock is cbpending already
+ * then cancel_bits should be kept, otherwise it is zeroed.
+ */
+ else if (!ldlm_is_cbpending(lock))
+ lock->l_policy_data.l_inodebits.cancel_bits = 0;
+ }
ldlm_set_cbpending(lock);
if (ldlm_is_cancel_on_block(lock))
INIT_LIST_HEAD(&ast_list);
if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL_BL_CB_RACE)) {
- int to = cfs_time_seconds(1);
+ long to = cfs_time_seconds(1);
+
while (to > 0) {
- schedule_timeout_and_set_state(
- TASK_INTERRUPTIBLE, to);
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(to);
if (lock->l_granted_mode == lock->l_req_mode ||
ldlm_is_destroyed(lock))
break;
lock->l_lvb_len, lvb_len);
GOTO(out, rc = -EINVAL);
}
- } else if (ldlm_has_layout(lock)) { /* for layout lock, lvb has
- * variable length */
- void *lvb_data;
-
- OBD_ALLOC_LARGE(lvb_data, lvb_len);
- if (lvb_data == NULL) {
- LDLM_ERROR(lock, "No memory: %d.\n", lvb_len);
- GOTO(out, rc = -ENOMEM);
- }
-
- lock_res_and_lock(lock);
- LASSERT(lock->l_lvb_data == NULL);
- lock->l_lvb_type = LVB_T_LAYOUT;
- lock->l_lvb_data = lvb_data;
- lock->l_lvb_len = lvb_len;
- unlock_res_and_lock(lock);
}
}
lock_res_and_lock(lock);
+
+ if (!ldlm_res_eq(&dlm_req->lock_desc.l_resource.lr_name,
+ &lock->l_resource->lr_name)) {
+ ldlm_resource_unlink_lock(lock);
+ unlock_res_and_lock(lock);
+ rc = ldlm_lock_change_resource(ns, lock,
+ &dlm_req->lock_desc.l_resource.lr_name);
+ if (rc < 0) {
+ LDLM_ERROR(lock, "Failed to allocate resource");
+ GOTO(out, rc);
+ }
+ LDLM_DEBUG(lock, "completion AST, new resource");
+ lock_res_and_lock(lock);
+ }
+
if (ldlm_is_destroyed(lock) ||
lock->l_granted_mode == lock->l_req_mode) {
/* bug 11300: the lock has already been granted */
LDLM_DEBUG(lock, "completion AST, new policy data");
}
- ldlm_resource_unlink_lock(lock);
- if (memcmp(&dlm_req->lock_desc.l_resource.lr_name,
- &lock->l_resource->lr_name,
- sizeof(lock->l_resource->lr_name)) != 0) {
- unlock_res_and_lock(lock);
- rc = ldlm_lock_change_resource(ns, lock,
- &dlm_req->lock_desc.l_resource.lr_name);
- if (rc < 0) {
- LDLM_ERROR(lock, "Failed to allocate resource");
- GOTO(out, rc);
- }
- LDLM_DEBUG(lock, "completion AST, new resource");
- CERROR("change resource!\n");
- lock_res_and_lock(lock);
- }
+ ldlm_resource_unlink_lock(lock);
if (dlm_req->lock_flags & LDLM_FL_AST_SENT) {
/* BL_AST locks are not needed in LRU.
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)))) {
+ ktime_after(ktime_get(),
+ ktime_add(lock->l_last_used,
+ ktime_set(ns->ns_dirty_age_limit, 0)))) {
unlock_res_and_lock(lock);
if (ldlm_bl_to_thread_lock(ns, NULL, lock))
ldlm_handle_bl_callback(ns, NULL, lock);
}
static int __ldlm_bl_to_thread(struct ldlm_bl_work_item *blwi,
- ldlm_cancel_flags_t cancel_flags)
+ enum ldlm_cancel_flags cancel_flags)
{
struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
ENTRY;
struct ldlm_lock_desc *ld,
struct list_head *cancels, int count,
struct ldlm_lock *lock,
- ldlm_cancel_flags_t cancel_flags)
+ enum ldlm_cancel_flags cancel_flags)
{
init_completion(&blwi->blwi_comp);
INIT_LIST_HEAD(&blwi->blwi_head);
struct ldlm_lock_desc *ld,
struct ldlm_lock *lock,
struct list_head *cancels, int count,
- ldlm_cancel_flags_t cancel_flags)
+ enum ldlm_cancel_flags cancel_flags)
{
ENTRY;
int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
struct list_head *cancels, int count,
- ldlm_cancel_flags_t cancel_flags)
+ enum ldlm_cancel_flags cancel_flags)
{
return ldlm_bl_to_thread(ns, ld, NULL, cancels, count, cancel_flags);
}
+int ldlm_bl_thread_wakeup(void)
+{
+ wake_up(&ldlm_state->ldlm_bl_pool->blp_waitq);
+ return 0;
+}
+
/* Setinfo coming from Server (eg MDT) to Client (eg MDC)! */
static int ldlm_handle_setinfo(struct ptlrpc_request *req)
{
}
static inline void ldlm_callback_errmsg(struct ptlrpc_request *req,
- const char *msg, int rc,
- struct lustre_handle *handle)
+ const char *msg, int rc,
+ const struct lustre_handle *handle)
{
DEBUG_REQ((req->rq_no_reply || rc) ? D_WARNING : D_DLMTRACE, req,
- "%s: [nid %s] [rc %d] [lock "LPX64"]",
+ "%s: [nid %s] [rc %d] [lock %#llx]",
msg, libcfs_id2str(req->rq_peer), rc,
handle ? handle->cookie : 0);
if (req->rq_no_reply)
CWARN("Send reply failed, maybe cause bug 21636.\n");
}
-static int ldlm_handle_qc_callback(struct ptlrpc_request *req)
-{
- struct obd_quotactl *oqctl;
- struct client_obd *cli = &req->rq_export->exp_obd->u.cli;
-
- oqctl = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
- if (oqctl == NULL) {
- CERROR("Can't unpack obd_quotactl\n");
- RETURN(-EPROTO);
- }
-
- oqctl->qc_stat = ptlrpc_status_ntoh(oqctl->qc_stat);
-
- cli->cl_qchk_stat = oqctl->qc_stat;
- return 0;
-}
-
/* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
static int ldlm_callback_handler(struct ptlrpc_request *req)
{
switch (lustre_msg_get_opc(req->rq_reqmsg)) {
case LDLM_BL_CALLBACK:
- if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET))
+ if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET)) {
+ if (cfs_fail_err)
+ ldlm_callback_reply(req, -(int)cfs_fail_err);
RETURN(0);
+ }
break;
case LDLM_CP_CALLBACK:
if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CP_CALLBACK_NET))
rc = ldlm_handle_setinfo(req);
ldlm_callback_reply(req, rc);
RETURN(0);
- case LLOG_ORIGIN_HANDLE_CREATE:
- 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_open(req);
- ldlm_callback_reply(req, rc);
- RETURN(0);
- case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
- 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:
- 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:
- 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 OBD_QC_CALLBACK:
- req_capsule_set(&req->rq_pill, &RQF_QC_CALLBACK);
- if (OBD_FAIL_CHECK(OBD_FAIL_OBD_QC_CALLBACK_NET))
- RETURN(0);
- rc = ldlm_handle_qc_callback(req);
- ldlm_callback_reply(req, rc);
- RETURN(0);
default:
CERROR("unknown opcode %u\n",
lustre_msg_get_opc(req->rq_reqmsg));
lock = ldlm_handle2lock_long(&dlm_req->lock_handle[0], 0);
if (!lock) {
- CDEBUG(D_DLMTRACE, "callback on lock "LPX64" - lock "
+ CDEBUG(D_DLMTRACE, "callback on lock %#llx - lock "
"disappeared\n", dlm_req->lock_handle[0].cookie);
rc = ldlm_callback_reply(req, -EINVAL);
ldlm_callback_errmsg(req, "Operate with invalid parameter", rc,
lock_res_and_lock(lock);
lock->l_flags |= ldlm_flags_from_wire(dlm_req->lock_flags &
LDLM_FL_AST_MASK);
- 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 (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 ((ldlm_is_canceling(lock) && ldlm_is_bl_done(lock)) ||
- ldlm_is_failed(lock)) {
- 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);
- }
+ ldlm_is_failed(lock)) {
+ LDLM_DEBUG(lock, "callback on lock %llx - lock disappeared",
+ 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);
+ ldlm_lock_remove_from_lru(lock);
ldlm_set_bl_ast(lock);
- }
+ }
unlock_res_and_lock(lock);
/* We want the ost thread to get this reply so that it can respond
*/
static int ldlm_cancel_handler(struct ptlrpc_request *req)
{
- int rc;
- ENTRY;
-
- /* Requests arrive in sender's byte order. The ptlrpc service
- * handler has already checked and, if necessary, byte-swapped the
- * incoming request message body, but I am responsible for the
- * message buffers. */
-
- req_capsule_init(&req->rq_pill, req, RCL_SERVER);
+ int rc;
- if (req->rq_export == NULL) {
- struct ldlm_request *dlm_req;
-
- CERROR("%s from %s arrived at %lu with bad export cookie "
- LPU64"\n",
- ll_opcode2str(lustre_msg_get_opc(req->rq_reqmsg)),
- libcfs_nid2str(req->rq_peer.nid),
- req->rq_arrival_time.tv_sec,
- lustre_msg_get_handle(req->rq_reqmsg)->cookie);
-
- 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);
- }
+ ENTRY;
- switch (lustre_msg_get_opc(req->rq_reqmsg)) {
+ /* Requests arrive in sender's byte order. The ptlrpc service
+ * handler has already checked and, if necessary, byte-swapped the
+ * 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;
+
+ CERROR("%s from %s arrived at %lu with bad export cookie "
+ "%llu\n",
+ ll_opcode2str(lustre_msg_get_opc(req->rq_reqmsg)),
+ libcfs_nid2str(req->rq_peer.nid),
+ req->rq_arrival_time.tv_sec,
+ lustre_msg_get_handle(req->rq_reqmsg)->cookie);
+
+ 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");
+ switch (lustre_msg_get_opc(req->rq_reqmsg)) {
+ /* 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");
if (CFS_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL_NET) ||
- CFS_FAIL_CHECK(OBD_FAIL_PTLRPC_CANCEL_RESEND))
+ CFS_FAIL_CHECK(OBD_FAIL_PTLRPC_CANCEL_RESEND) ||
+ CFS_FAIL_CHECK(OBD_FAIL_LDLM_BL_EVICT))
RETURN(0);
- rc = ldlm_handle_cancel(req);
- if (rc)
- break;
- 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);
- }
+ rc = ldlm_handle_cancel(req);
+ break;
+ case LDLM_CONVERT:
+ {
+ struct ldlm_request *dlm_req;
- RETURN(0);
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CONVERT);
+ CDEBUG(D_INODE, "convert\n");
+
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ if (dlm_req == NULL) {
+ CDEBUG(D_INFO, "bad request buffer for cancel\n");
+ rc = ldlm_callback_reply(req, -EPROTO);
+ } else {
+ req->rq_status = ldlm_handle_convert0(req, dlm_req);
+ rc = ptlrpc_reply(req);
+ }
+ break;
+ }
+ default:
+ CERROR("invalid opcode %d\n",
+ lustre_msg_get_opc(req->rq_reqmsg));
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CALLBACK);
+ rc = ldlm_callback_reply(req, -EINVAL);
+ }
+
+ RETURN(rc);
}
static int ldlm_cancel_hpreq_lock_match(struct ptlrpc_request *req,
- struct ldlm_lock *lock)
+ struct ldlm_lock *lock)
{
- struct ldlm_request *dlm_req;
- struct lustre_handle lockh;
- int rc = 0;
- int i;
- ENTRY;
-
- dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
- if (dlm_req == NULL)
- RETURN(0);
+ struct ldlm_request *dlm_req;
+ struct lustre_handle lockh;
+ int rc = 0;
+ int i;
- ldlm_lock2handle(lock, &lockh);
- for (i = 0; i < dlm_req->lock_count; i++) {
- if (lustre_handle_equal(&dlm_req->lock_handle[i],
- &lockh)) {
- DEBUG_REQ(D_RPCTRACE, req,
- "Prio raised by lock "LPX64".", lockh.cookie);
+ ENTRY;
- rc = 1;
- break;
- }
- }
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ if (dlm_req == NULL)
+ RETURN(0);
- RETURN(rc);
+ ldlm_lock2handle(lock, &lockh);
+ for (i = 0; i < dlm_req->lock_count; i++) {
+ if (lustre_handle_equal(&dlm_req->lock_handle[i],
+ &lockh)) {
+ DEBUG_REQ(D_RPCTRACE, req,
+ "Prio raised by lock %#llx.", lockh.cookie);
+ rc = 1;
+ break;
+ }
+ }
+ RETURN(rc);
}
static int ldlm_cancel_hpreq_check(struct ptlrpc_request *req)
{
- struct ldlm_request *dlm_req;
- int rc = 0;
- int i;
- ENTRY;
+ struct ldlm_request *dlm_req;
+ int rc = 0;
+ int i;
- /* no prolong in recovery */
- if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
- RETURN(0);
+ ENTRY;
- dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
- if (dlm_req == NULL)
- RETURN(-EFAULT);
+ /* no prolong in recovery */
+ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
+ RETURN(0);
- for (i = 0; i < dlm_req->lock_count; i++) {
- struct ldlm_lock *lock;
+ dlm_req = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
+ if (dlm_req == NULL)
+ RETURN(-EFAULT);
- lock = ldlm_handle2lock(&dlm_req->lock_handle[i]);
- if (lock == NULL)
- continue;
+ for (i = 0; i < dlm_req->lock_count; i++) {
+ struct ldlm_lock *lock;
+
+ lock = ldlm_handle2lock(&dlm_req->lock_handle[i]);
+ if (lock == NULL)
+ continue;
rc = ldlm_is_ast_sent(lock) ? 1 : 0;
- if (rc)
- LDLM_DEBUG(lock, "hpreq cancel lock");
- LDLM_LOCK_PUT(lock);
+ if (rc)
+ LDLM_DEBUG(lock, "hpreq cancel/convert lock");
+ LDLM_LOCK_PUT(lock);
- if (rc)
- break;
- }
+ if (rc)
+ break;
+ }
- RETURN(rc);
+ RETURN(rc);
}
static struct ptlrpc_hpreq_ops ldlm_cancel_hpreq_ops = {
- .hpreq_lock_match = ldlm_cancel_hpreq_lock_match,
+ .hpreq_lock_match = ldlm_cancel_hpreq_lock_match,
.hpreq_check = ldlm_cancel_hpreq_check,
.hpreq_fini = NULL,
};
static int ldlm_hpreq_handler(struct ptlrpc_request *req)
{
- ENTRY;
+ ENTRY;
- req_capsule_init(&req->rq_pill, req, RCL_SERVER);
+ req_capsule_init(&req->rq_pill, req, RCL_SERVER);
- if (req->rq_export == NULL)
- RETURN(0);
+ if (req->rq_export == NULL)
+ RETURN(0);
- if (LDLM_CANCEL == lustre_msg_get_opc(req->rq_reqmsg)) {
- req_capsule_set(&req->rq_pill, &RQF_LDLM_CANCEL);
- req->rq_ops = &ldlm_cancel_hpreq_ops;
- }
- RETURN(0);
+ if (LDLM_CANCEL == lustre_msg_get_opc(req->rq_reqmsg)) {
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CANCEL);
+ req->rq_ops = &ldlm_cancel_hpreq_ops;
+ } else if (LDLM_CONVERT == lustre_msg_get_opc(req->rq_reqmsg)) {
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_CONVERT);
+ req->rq_ops = &ldlm_cancel_hpreq_ops;
+ }
+ RETURN(0);
}
-int ldlm_revoke_lock_cb(cfs_hash_t *hs, cfs_hash_bd_t *bd,
- struct hlist_node *hnode, void *data)
+static int ldlm_revoke_lock_cb(struct cfs_hash *hs, struct cfs_hash_bd *bd,
+ struct hlist_node *hnode, void *data)
{
struct list_head *rpc_list = data;
void ldlm_revoke_export_locks(struct obd_export *exp)
{
struct list_head rpc_list;
- ENTRY;
+ ENTRY;
INIT_LIST_HEAD(&rpc_list);
- cfs_hash_for_each_empty(exp->exp_lock_hash,
- ldlm_revoke_lock_cb, &rpc_list);
- ldlm_run_ast_work(exp->exp_obd->obd_namespace, &rpc_list,
- LDLM_WORK_REVOKE_AST);
+ cfs_hash_for_each_nolock(exp->exp_lock_hash,
+ ldlm_revoke_lock_cb, &rpc_list, 0);
+ ldlm_run_ast_work(exp->exp_obd->obd_namespace, &rpc_list,
+ LDLM_WORK_REVOKE_AST);
- EXIT;
+ EXIT;
}
EXPORT_SYMBOL(ldlm_revoke_export_locks);
#endif /* HAVE_SERVER_SUPPORT */
-static struct ldlm_bl_work_item *ldlm_bl_get_work(struct ldlm_bl_pool *blp)
+static int ldlm_bl_get_work(struct ldlm_bl_pool *blp,
+ struct ldlm_bl_work_item **p_blwi,
+ struct obd_export **p_exp)
{
struct ldlm_bl_work_item *blwi = NULL;
static unsigned int num_bl = 0;
+ static unsigned int num_stale;
+ int num_th = atomic_read(&blp->blp_num_threads);
+
+ *p_exp = obd_stale_export_get();
spin_lock(&blp->blp_lock);
+ if (*p_exp != NULL) {
+ if (num_th == 1 || ++num_stale < num_th) {
+ spin_unlock(&blp->blp_lock);
+ return 1;
+ } else {
+ num_stale = 0;
+ }
+ }
+
/* 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_entry);
if (blwi) {
- if (++num_bl >= atomic_read(&blp->blp_num_threads))
+ if (++num_bl >= num_th)
num_bl = 0;
list_del(&blwi->blwi_entry);
}
spin_unlock(&blp->blp_lock);
+ *p_blwi = blwi;
+
+ if (*p_exp != NULL && *p_blwi != NULL) {
+ obd_stale_export_put(*p_exp);
+ *p_exp = NULL;
+ }
- return blwi;
+ return (*p_blwi != NULL || *p_exp != NULL) ? 1 : 0;
}
/* This only contains temporary data until the thread starts */
struct ldlm_bl_thread_data {
- 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)
+static int ldlm_bl_thread_start(struct ldlm_bl_pool *blp, bool check_busy)
{
struct ldlm_bl_thread_data bltd = { .bltd_blp = blp };
struct task_struct *task;
init_completion(&bltd.bltd_comp);
- bltd.bltd_num = atomic_read(&blp->blp_num_threads);
- snprintf(bltd.bltd_name, sizeof(bltd.bltd_name) - 1,
- "ldlm_bl_%02d", bltd.bltd_num);
- task = kthread_run(ldlm_bl_thread_main, &bltd, bltd.bltd_name);
+
+ bltd.bltd_num = atomic_inc_return(&blp->blp_num_threads);
+ if (bltd.bltd_num >= blp->blp_max_threads) {
+ atomic_dec(&blp->blp_num_threads);
+ return 0;
+ }
+
+ LASSERTF(bltd.bltd_num > 0, "thread num:%d\n", bltd.bltd_num);
+ if (check_busy &&
+ atomic_read(&blp->blp_busy_threads) < (bltd.bltd_num - 1)) {
+ atomic_dec(&blp->blp_num_threads);
+ return 0;
+ }
+
+ task = kthread_run(ldlm_bl_thread_main, &bltd, "ldlm_bl_%02d",
+ bltd.bltd_num);
if (IS_ERR(task)) {
CERROR("cannot start LDLM thread ldlm_bl_%02d: rc %ld\n",
- atomic_read(&blp->blp_num_threads), PTR_ERR(task));
+ bltd.bltd_num, PTR_ERR(task));
+ atomic_dec(&blp->blp_num_threads);
return PTR_ERR(task);
}
wait_for_completion(&bltd.bltd_comp);
return 0;
}
+/* Not fatal if racy and have a few too many threads */
+static int ldlm_bl_thread_need_create(struct ldlm_bl_pool *blp,
+ struct ldlm_bl_work_item *blwi)
+{
+ if (atomic_read(&blp->blp_num_threads) >= blp->blp_max_threads)
+ return 0;
+
+ if (atomic_read(&blp->blp_busy_threads) <
+ atomic_read(&blp->blp_num_threads))
+ return 0;
+
+ if (blwi != NULL && (blwi->blwi_ns == NULL ||
+ blwi->blwi_mem_pressure))
+ return 0;
+
+ return 1;
+}
+
+static int ldlm_bl_thread_blwi(struct ldlm_bl_pool *blp,
+ struct ldlm_bl_work_item *blwi)
+{
+ ENTRY;
+
+ if (blwi->blwi_ns == NULL)
+ /* added by ldlm_cleanup() */
+ RETURN(LDLM_ITER_STOP);
+
+ if (blwi->blwi_mem_pressure)
+ memory_pressure_set();
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_PAUSE_CANCEL2, 4);
+
+ if (blwi->blwi_count) {
+ int 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. */
+ count = ldlm_cli_cancel_list_local(&blwi->blwi_head,
+ blwi->blwi_count,
+ LCF_BL_AST);
+ ldlm_cli_cancel_list(&blwi->blwi_head, count, NULL,
+ blwi->blwi_flags);
+ } else {
+ ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
+ blwi->blwi_lock);
+ }
+ if (blwi->blwi_mem_pressure)
+ memory_pressure_clr();
+
+ if (blwi->blwi_flags & LCF_ASYNC)
+ OBD_FREE(blwi, sizeof(*blwi));
+ else
+ complete(&blwi->blwi_comp);
+
+ RETURN(0);
+}
+
+/**
+ * Cancel stale locks on export. Cancel blocked locks first.
+ * If the given export has blocked locks, the next in the list may have
+ * them too, thus cancel not blocked locks only if the current export has
+ * no blocked locks.
+ **/
+static int ldlm_bl_thread_exports(struct ldlm_bl_pool *blp,
+ struct obd_export *exp)
+{
+ int num;
+ ENTRY;
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_BL_EVICT, 4);
+
+ num = ldlm_export_cancel_blocked_locks(exp);
+ if (num == 0)
+ ldlm_export_cancel_locks(exp);
+
+ obd_stale_export_put(exp);
+
+ RETURN(0);
+}
+
+
/**
* Main blocking requests processing thread.
*
blp = bltd->bltd_blp;
- atomic_inc(&blp->blp_num_threads);
- atomic_inc(&blp->blp_busy_threads);
-
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;
- int busy;
+ struct obd_export *exp = NULL;
+ int rc;
- blwi = ldlm_bl_get_work(blp);
+ rc = ldlm_bl_get_work(blp, &blwi, &exp);
- if (blwi == NULL) {
- atomic_dec(&blp->blp_busy_threads);
+ if (rc == 0)
l_wait_event_exclusive(blp->blp_waitq,
- (blwi = ldlm_bl_get_work(blp)) != NULL,
- &lwi);
- busy = atomic_inc_return(&blp->blp_busy_threads);
- } else {
- busy = atomic_read(&blp->blp_busy_threads);
- }
-
- if (blwi->blwi_ns == NULL)
- /* added by ldlm_cleanup() */
- break;
+ ldlm_bl_get_work(blp, &blwi,
+ &exp),
+ &lwi);
+ atomic_inc(&blp->blp_busy_threads);
- /* 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) &&
- !blwi->blwi_mem_pressure))
+ if (ldlm_bl_thread_need_create(blp, blwi))
/* discard the return value, we tried */
- ldlm_bl_thread_start(blp);
-
- if (blwi->blwi_mem_pressure)
- memory_pressure_set();
-
- OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_PAUSE_CANCEL2, 4);
-
- if (blwi->blwi_count) {
- int 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. */
- count = ldlm_cli_cancel_list_local(&blwi->blwi_head,
- blwi->blwi_count,
- LCF_BL_AST);
- ldlm_cli_cancel_list(&blwi->blwi_head, count, NULL,
- blwi->blwi_flags);
- } else {
- ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
- blwi->blwi_lock);
- }
- if (blwi->blwi_mem_pressure)
- memory_pressure_clr();
+ ldlm_bl_thread_start(blp, true);
- if (blwi->blwi_flags & LCF_ASYNC)
- OBD_FREE(blwi, sizeof(*blwi));
- else
- complete(&blwi->blwi_comp);
+ if (exp)
+ rc = ldlm_bl_thread_exports(blp, exp);
+ else if (blwi)
+ rc = ldlm_bl_thread_blwi(blp, blwi);
+
+ atomic_dec(&blp->blp_busy_threads);
+
+ if (rc == LDLM_ITER_STOP)
+ break;
+
+ /* If there are many namespaces, we will not sleep waiting for
+ * work, and must do a cond_resched to avoid holding the CPU
+ * for too long */
+ cond_resched();
}
- atomic_dec(&blp->blp_busy_threads);
atomic_dec(&blp->blp_num_threads);
complete(&blp->blp_comp);
RETURN(0);
RETURN(rc);
}
-EXPORT_SYMBOL(ldlm_get_ref);
void ldlm_put_ref(void)
{
EXIT;
}
-EXPORT_SYMBOL(ldlm_put_ref);
/*
* Export handle<->lock hash operations.
*/
static unsigned
-ldlm_export_lock_hash(cfs_hash_t *hs, const void *key, unsigned mask)
+ldlm_export_lock_hash(struct cfs_hash *hs, const void *key, unsigned mask)
{
return cfs_hash_u64_hash(((struct lustre_handle *)key)->cookie, mask);
}
}
static void
-ldlm_export_lock_get(cfs_hash_t *hs, struct hlist_node *hnode)
+ldlm_export_lock_get(struct cfs_hash *hs, struct hlist_node *hnode)
{
struct ldlm_lock *lock;
}
static void
-ldlm_export_lock_put(cfs_hash_t *hs, struct hlist_node *hnode)
+ldlm_export_lock_put(struct cfs_hash *hs, struct hlist_node *hnode)
{
struct ldlm_lock *lock;
LDLM_LOCK_RELEASE(lock);
}
-static cfs_hash_ops_t ldlm_export_lock_ops = {
+static struct cfs_hash_ops ldlm_export_lock_ops = {
.hs_hash = ldlm_export_lock_hash,
.hs_key = ldlm_export_lock_key,
.hs_keycmp = ldlm_export_lock_keycmp,
}
EXPORT_SYMBOL(ldlm_destroy_export);
+static ssize_t cancel_unused_locks_before_replay_show(struct kobject *kobj,
+ struct attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", ldlm_cancel_unused_locks_before_replay);
+}
+
+static ssize_t cancel_unused_locks_before_replay_store(struct kobject *kobj,
+ struct attribute *attr,
+ const char *buffer,
+ size_t count)
+{
+ int rc;
+ unsigned long val;
+
+ rc = kstrtoul(buffer, 10, &val);
+ if (rc)
+ return rc;
+
+ ldlm_cancel_unused_locks_before_replay = val;
+
+ return count;
+}
+LUSTRE_RW_ATTR(cancel_unused_locks_before_replay);
+
+static struct attribute *ldlm_attrs[] = {
+ &lustre_attr_cancel_unused_locks_before_replay.attr,
+ NULL,
+};
+
+static struct attribute_group ldlm_attr_group = {
+ .attrs = ldlm_attrs,
+};
+
static int ldlm_setup(void)
{
static struct ptlrpc_service_conf conf;
if (ldlm_state == NULL)
RETURN(-ENOMEM);
-#ifdef LPROCFS
- rc = ldlm_proc_setup();
- if (rc != 0)
+ ldlm_kobj = kobject_create_and_add("ldlm", &lustre_kset->kobj);
+ if (!ldlm_kobj)
+ GOTO(out, -ENOMEM);
+
+ rc = sysfs_create_group(ldlm_kobj, &ldlm_attr_group);
+ if (rc)
+ GOTO(out, rc);
+
+ ldlm_ns_kset = kset_create_and_add("namespaces", NULL, ldlm_kobj);
+ if (!ldlm_ns_kset)
+ GOTO(out, -ENOMEM);
+
+ ldlm_svc_kset = kset_create_and_add("services", NULL, ldlm_kobj);
+ if (!ldlm_svc_kset)
+ GOTO(out, -ENOMEM);
+
+ rc = ldlm_debugfs_setup();
+ if (rc != 0)
GOTO(out, rc);
-#endif /* LPROCFS */
memset(&conf, 0, sizeof(conf));
conf = (typeof(conf)) {
.tc_nthrs_base = LDLM_NTHRS_BASE,
.tc_nthrs_max = LDLM_NTHRS_MAX,
.tc_nthrs_user = ldlm_num_threads,
- .tc_cpu_affinity = 1,
+ .tc_cpu_bind = ldlm_cpu_bind,
.tc_ctx_tags = LCT_MD_THREAD | LCT_DT_THREAD,
},
.psc_cpt = {
.cc_pattern = ldlm_cpts,
+ .cc_affinity = true,
},
.psc_ops = {
.so_req_handler = ldlm_callback_handler,
},
};
ldlm_state->ldlm_cb_service = \
- ptlrpc_register_service(&conf, ldlm_svc_proc_dir);
+ ptlrpc_register_service(&conf, ldlm_svc_kset,
+ ldlm_svc_debugfs_dir);
if (IS_ERR(ldlm_state->ldlm_cb_service)) {
CERROR("failed to start service\n");
rc = PTR_ERR(ldlm_state->ldlm_cb_service);
.tc_nthrs_base = LDLM_NTHRS_BASE,
.tc_nthrs_max = LDLM_NTHRS_MAX,
.tc_nthrs_user = ldlm_num_threads,
- .tc_cpu_affinity = 1,
+ .tc_cpu_bind = ldlm_cpu_bind,
.tc_ctx_tags = LCT_MD_THREAD | \
LCT_DT_THREAD | \
LCT_CL_THREAD,
},
.psc_cpt = {
.cc_pattern = ldlm_cpts,
+ .cc_affinity = true,
},
.psc_ops = {
.so_req_handler = ldlm_cancel_handler,
},
};
ldlm_state->ldlm_cancel_service = \
- ptlrpc_register_service(&conf, ldlm_svc_proc_dir);
+ ptlrpc_register_service(&conf, ldlm_svc_kset,
+ ldlm_svc_debugfs_dir);
if (IS_ERR(ldlm_state->ldlm_cancel_service)) {
CERROR("failed to start service\n");
rc = PTR_ERR(ldlm_state->ldlm_cancel_service);
}
for (i = 0; i < blp->blp_min_threads; i++) {
- rc = ldlm_bl_thread_start(blp);
+ rc = ldlm_bl_thread_start(blp, false);
if (rc < 0)
GOTO(out, rc);
}
#ifdef HAVE_SERVER_SUPPORT
- INIT_LIST_HEAD(&expired_lock_thread.elt_expired_locks);
- expired_lock_thread.elt_state = ELT_STOPPED;
- init_waitqueue_head(&expired_lock_thread.elt_waitq);
-
- INIT_LIST_HEAD(&waiting_locks_list);
- spin_lock_init(&waiting_locks_spinlock);
- cfs_timer_init(&waiting_locks_timer, waiting_locks_callback, 0);
-
task = kthread_run(expired_lock_main, NULL, "ldlm_elt");
if (IS_ERR(task)) {
rc = PTR_ERR(task);
GOTO(out, rc);
}
- wait_event(expired_lock_thread.elt_waitq,
- expired_lock_thread.elt_state == ELT_READY);
+ wait_event(expired_lock_wait_queue,
+ expired_lock_thread_state == ELT_READY);
#endif /* HAVE_SERVER_SUPPORT */
rc = ldlm_pools_init();
CERROR("Failed to initialize LDLM pools: %d\n", rc);
GOTO(out, rc);
}
+
+ rc = ldlm_reclaim_setup();
+ if (rc) {
+ CERROR("Failed to setup reclaim thread: rc = %d\n", rc);
+ GOTO(out, rc);
+ }
RETURN(0);
out:
RETURN(-EBUSY);
}
- ldlm_pools_fini();
+ ldlm_reclaim_cleanup();
+ ldlm_pools_fini();
if (ldlm_state->ldlm_bl_pool != NULL) {
struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
ptlrpc_unregister_service(ldlm_state->ldlm_cancel_service);
#endif
- ldlm_proc_cleanup();
+ if (ldlm_ns_kset)
+ kset_unregister(ldlm_ns_kset);
+ if (ldlm_svc_kset)
+ kset_unregister(ldlm_svc_kset);
+ if (ldlm_kobj) {
+ sysfs_remove_group(ldlm_kobj, &ldlm_attr_group);
+ kobject_put(ldlm_kobj);
+ }
+
+ ldlm_debugfs_cleanup();
#ifdef HAVE_SERVER_SUPPORT
- if (expired_lock_thread.elt_state != ELT_STOPPED) {
- expired_lock_thread.elt_state = ELT_TERMINATE;
- wake_up(&expired_lock_thread.elt_waitq);
- wait_event(expired_lock_thread.elt_waitq,
- expired_lock_thread.elt_state == ELT_STOPPED);
+ if (expired_lock_thread_state != ELT_STOPPED) {
+ expired_lock_thread_state = ELT_TERMINATE;
+ wake_up(&expired_lock_wait_queue);
+ wait_event(expired_lock_wait_queue,
+ expired_lock_thread_state == ELT_STOPPED);
}
#endif
int ldlm_init(void)
{
- mutex_init(&ldlm_ref_mutex);
- mutex_init(ldlm_namespace_lock(LDLM_NAMESPACE_SERVER));
- mutex_init(ldlm_namespace_lock(LDLM_NAMESPACE_CLIENT));
-
- INIT_LIST_HEAD(&ldlm_srv_namespace_list);
- INIT_LIST_HEAD(&ldlm_cli_active_namespace_list);
- INIT_LIST_HEAD(&ldlm_cli_inactive_namespace_list);
-
ldlm_resource_slab = kmem_cache_create("ldlm_resources",
sizeof(struct ldlm_resource), 0,
SLAB_HWCACHE_ALIGN, NULL);
ldlm_lock_slab = kmem_cache_create("ldlm_locks",
sizeof(struct ldlm_lock), 0,
SLAB_HWCACHE_ALIGN | SLAB_DESTROY_BY_RCU, NULL);
- if (ldlm_lock_slab == NULL) {
- kmem_cache_destroy(ldlm_resource_slab);
- return -ENOMEM;
- }
+ if (ldlm_lock_slab == NULL)
+ goto out_resource;
ldlm_interval_slab = kmem_cache_create("interval_node",
sizeof(struct ldlm_interval),
0, SLAB_HWCACHE_ALIGN, NULL);
- if (ldlm_interval_slab == NULL) {
- kmem_cache_destroy(ldlm_resource_slab);
- kmem_cache_destroy(ldlm_lock_slab);
- return -ENOMEM;
- }
+ if (ldlm_interval_slab == NULL)
+ goto out_lock;
+
+ ldlm_interval_tree_slab = kmem_cache_create("interval_tree",
+ sizeof(struct ldlm_interval_tree) * LCK_MODE_NUM,
+ 0, SLAB_HWCACHE_ALIGN, NULL);
+ if (ldlm_interval_tree_slab == NULL)
+ goto out_interval;
+
+#ifdef HAVE_SERVER_SUPPORT
+ ldlm_glimpse_work_kmem = kmem_cache_create("ldlm_glimpse_work_kmem",
+ sizeof(struct ldlm_glimpse_work),
+ 0, 0, NULL);
+ if (ldlm_glimpse_work_kmem == NULL)
+ goto out_interval_tree;
+#endif
+
#if LUSTRE_TRACKS_LOCK_EXP_REFS
- class_export_dump_hook = ldlm_dump_export_locks;
+ class_export_dump_hook = ldlm_dump_export_locks;
#endif
- return 0;
+ return 0;
+#ifdef HAVE_SERVER_SUPPORT
+out_interval_tree:
+ kmem_cache_destroy(ldlm_interval_tree_slab);
+#endif
+out_interval:
+ kmem_cache_destroy(ldlm_interval_slab);
+out_lock:
+ kmem_cache_destroy(ldlm_lock_slab);
+out_resource:
+ kmem_cache_destroy(ldlm_resource_slab);
+
+ return -ENOMEM;
}
void ldlm_exit(void)
synchronize_rcu();
kmem_cache_destroy(ldlm_lock_slab);
kmem_cache_destroy(ldlm_interval_slab);
+ kmem_cache_destroy(ldlm_interval_tree_slab);
+#ifdef HAVE_SERVER_SUPPORT
+ kmem_cache_destroy(ldlm_glimpse_work_kmem);
+#endif
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff