}
lock->l_destroyed = 1;
- if (lock->l_export && lock->l_export->exp_lock_hash &&
- !cfs_hlist_unhashed(&lock->l_exp_hash))
- cfs_hash_del(lock->l_export->exp_lock_hash,
- &lock->l_remote_handle, &lock->l_exp_hash);
+ if (lock->l_export && lock->l_export->exp_lock_hash) {
+ /* NB: it's safe to call cfs_hash_del() even lock isn't
+ * in exp_lock_hash. */
+ cfs_hash_del(lock->l_export->exp_lock_hash,
+ &lock->l_remote_handle, &lock->l_exp_hash);
+ }
ldlm_lock_remove_from_lru(lock);
class_handle_unhash(&lock->l_handle);
CFS_INIT_LIST_HEAD(&lock->l_sl_mode);
CFS_INIT_LIST_HEAD(&lock->l_sl_policy);
CFS_INIT_HLIST_NODE(&lock->l_exp_hash);
+ CFS_INIT_HLIST_NODE(&lock->l_exp_flock_hash);
lprocfs_counter_incr(ldlm_res_to_ns(resource)->ns_stats,
LDLM_NSS_LOCKS);
#endif
static int
-ldlm_work_bl_ast_lock(cfs_list_t *tmp, struct ldlm_cb_set_arg *arg)
+ldlm_work_bl_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
{
- struct ldlm_lock_desc d;
- struct ldlm_lock *lock = cfs_list_entry(tmp, struct ldlm_lock,
- l_bl_ast);
- int rc;
- ENTRY;
-
- /* nobody should touch l_bl_ast */
- lock_res_and_lock(lock);
- cfs_list_del_init(&lock->l_bl_ast);
+ struct ldlm_cb_set_arg *arg = opaq;
+ struct ldlm_lock_desc d;
+ int rc;
+ struct ldlm_lock *lock;
+ ENTRY;
- LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
- LASSERT(lock->l_bl_ast_run == 0);
- LASSERT(lock->l_blocking_lock);
- lock->l_bl_ast_run++;
- unlock_res_and_lock(lock);
-
- ldlm_lock2desc(lock->l_blocking_lock, &d);
+ if (cfs_list_empty(arg->list))
+ RETURN(-ENOENT);
- rc = lock->l_blocking_ast(lock, &d, (void *)arg,
- LDLM_CB_BLOCKING);
- LDLM_LOCK_RELEASE(lock->l_blocking_lock);
- lock->l_blocking_lock = NULL;
- LDLM_LOCK_RELEASE(lock);
+ lock = cfs_list_entry(arg->list->next, struct ldlm_lock, l_bl_ast);
- RETURN(rc);
-}
+ /* nobody should touch l_bl_ast */
+ lock_res_and_lock(lock);
+ cfs_list_del_init(&lock->l_bl_ast);
-static int
-ldlm_work_cp_ast_lock(cfs_list_t *tmp, struct ldlm_cb_set_arg *arg)
-{
- struct ldlm_lock *lock = cfs_list_entry(tmp, struct ldlm_lock, l_cp_ast);
- ldlm_completion_callback completion_callback;
- int rc = 0;
- ENTRY;
+ LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
+ LASSERT(lock->l_bl_ast_run == 0);
+ LASSERT(lock->l_blocking_lock);
+ lock->l_bl_ast_run++;
+ unlock_res_and_lock(lock);
- /* It's possible to receive a completion AST before we've set
- * the l_completion_ast pointer: either because the AST arrived
- * before the reply, or simply because there's a small race
- * window between receiving the reply and finishing the local
- * enqueue. (bug 842)
- *
- * This can't happen with the blocking_ast, however, because we
- * will never call the local blocking_ast until we drop our
- * reader/writer reference, which we won't do until we get the
- * reply and finish enqueueing. */
+ ldlm_lock2desc(lock->l_blocking_lock, &d);
- /* nobody should touch l_cp_ast */
- lock_res_and_lock(lock);
- cfs_list_del_init(&lock->l_cp_ast);
- LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
- /* save l_completion_ast since it can be changed by
- * mds_intent_policy(), see bug 14225 */
- completion_callback = lock->l_completion_ast;
- lock->l_flags &= ~LDLM_FL_CP_REQD;
- unlock_res_and_lock(lock);
+ rc = lock->l_blocking_ast(lock, &d, (void *)arg, LDLM_CB_BLOCKING);
+ LDLM_LOCK_RELEASE(lock->l_blocking_lock);
+ lock->l_blocking_lock = NULL;
+ LDLM_LOCK_RELEASE(lock);
- if (completion_callback != NULL)
- rc = completion_callback(lock, 0, (void *)arg);
- LDLM_LOCK_RELEASE(lock);
+ RETURN(rc);
+}
- RETURN(rc);
+static int
+ldlm_work_cp_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
+{
+ struct ldlm_cb_set_arg *arg = opaq;
+ int rc = 0;
+ struct ldlm_lock *lock;
+ ldlm_completion_callback completion_callback;
+ ENTRY;
+
+ if (cfs_list_empty(arg->list))
+ RETURN(-ENOENT);
+
+ lock = cfs_list_entry(arg->list->next, struct ldlm_lock, l_cp_ast);
+
+ /* It's possible to receive a completion AST before we've set
+ * the l_completion_ast pointer: either because the AST arrived
+ * before the reply, or simply because there's a small race
+ * window between receiving the reply and finishing the local
+ * enqueue. (bug 842)
+ *
+ * This can't happen with the blocking_ast, however, because we
+ * will never call the local blocking_ast until we drop our
+ * reader/writer reference, which we won't do until we get the
+ * reply and finish enqueueing. */
+
+ /* nobody should touch l_cp_ast */
+ lock_res_and_lock(lock);
+ cfs_list_del_init(&lock->l_cp_ast);
+ LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
+ /* save l_completion_ast since it can be changed by
+ * mds_intent_policy(), see bug 14225 */
+ completion_callback = lock->l_completion_ast;
+ lock->l_flags &= ~LDLM_FL_CP_REQD;
+ unlock_res_and_lock(lock);
+
+ if (completion_callback != NULL)
+ rc = completion_callback(lock, 0, (void *)arg);
+ LDLM_LOCK_RELEASE(lock);
+
+ RETURN(rc);
}
static int
-ldlm_work_revoke_ast_lock(cfs_list_t *tmp, struct ldlm_cb_set_arg *arg)
+ldlm_work_revoke_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
{
- struct ldlm_lock_desc desc;
- struct ldlm_lock *lock = cfs_list_entry(tmp, struct ldlm_lock,
- l_rk_ast);
- int rc;
- ENTRY;
+ struct ldlm_cb_set_arg *arg = opaq;
+ struct ldlm_lock_desc desc;
+ int rc;
+ struct ldlm_lock *lock;
+ ENTRY;
- cfs_list_del_init(&lock->l_rk_ast);
+ if (cfs_list_empty(arg->list))
+ RETURN(-ENOENT);
- /* the desc just pretend to exclusive */
- ldlm_lock2desc(lock, &desc);
- desc.l_req_mode = LCK_EX;
- desc.l_granted_mode = 0;
+ lock = cfs_list_entry(arg->list->next, struct ldlm_lock, l_rk_ast);
+ cfs_list_del_init(&lock->l_rk_ast);
- rc = lock->l_blocking_ast(lock, &desc, (void*)arg, LDLM_CB_BLOCKING);
- LDLM_LOCK_RELEASE(lock);
+ /* the desc just pretend to exclusive */
+ ldlm_lock2desc(lock, &desc);
+ desc.l_req_mode = LCK_EX;
+ desc.l_granted_mode = 0;
- RETURN(rc);
+ rc = lock->l_blocking_ast(lock, &desc, (void*)arg, LDLM_CB_BLOCKING);
+ LDLM_LOCK_RELEASE(lock);
+
+ RETURN(rc);
}
-int ldlm_run_ast_work(struct ldlm_namespace *ns, cfs_list_t *rpc_list,
- ldlm_desc_ast_t ast_type)
+int ldlm_work_gl_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
{
- struct l_wait_info lwi = { 0 };
- struct ldlm_cb_set_arg *arg;
- cfs_list_t *tmp, *pos;
- int (*work_ast_lock)(cfs_list_t *tmp, struct ldlm_cb_set_arg *arg);
- unsigned int max_ast_count;
- int rc;
- ENTRY;
+ struct ldlm_cb_set_arg *arg = opaq;
+ struct ldlm_glimpse_work *gl_work;
+ struct ldlm_lock *lock;
+ int rc = 0;
+ ENTRY;
- if (cfs_list_empty(rpc_list))
- RETURN(0);
+ if (cfs_list_empty(arg->list))
+ RETURN(-ENOENT);
- OBD_ALLOC_PTR(arg);
- if (arg == NULL)
- RETURN(-ENOMEM);
-
- cfs_atomic_set(&arg->restart, 0);
- cfs_atomic_set(&arg->rpcs, 0);
- cfs_atomic_set(&arg->refcount, 1);
- cfs_waitq_init(&arg->waitq);
-
- switch (ast_type) {
- case LDLM_WORK_BL_AST:
- arg->type = LDLM_BL_CALLBACK;
- work_ast_lock = ldlm_work_bl_ast_lock;
- break;
- case LDLM_WORK_CP_AST:
- arg->type = LDLM_CP_CALLBACK;
- work_ast_lock = ldlm_work_cp_ast_lock;
- break;
- case LDLM_WORK_REVOKE_AST:
- arg->type = LDLM_BL_CALLBACK;
- work_ast_lock = ldlm_work_revoke_ast_lock;
- break;
- default:
- LBUG();
- }
+ gl_work = cfs_list_entry(arg->list->next, struct ldlm_glimpse_work,
+ gl_list);
+ cfs_list_del_init(&gl_work->gl_list);
- max_ast_count = ns->ns_max_parallel_ast ? : UINT_MAX;
- arg->threshold = max_ast_count;
+ lock = gl_work->gl_lock;
+ if (lock->l_glimpse_ast(lock, (void*)arg) == 0)
+ rc = 1;
- cfs_list_for_each_safe(tmp, pos, rpc_list) {
- (void)work_ast_lock(tmp, arg);
- if (cfs_atomic_read(&arg->rpcs) < max_ast_count)
- continue;
+ LDLM_LOCK_RELEASE(lock);
- l_wait_event(arg->waitq,
- cfs_atomic_read(&arg->rpcs) < arg->threshold,
- &lwi);
- }
+ if ((gl_work->gl_flags & LDLM_GL_WORK_NOFREE) == 0)
+ OBD_FREE_PTR(gl_work);
- arg->threshold = 1;
- l_wait_event(arg->waitq, cfs_atomic_read(&arg->rpcs) == 0, &lwi);
+ RETURN(rc);
+}
- rc = cfs_atomic_read(&arg->restart) ? -ERESTART : 0;
- ldlm_csa_put(arg);
- RETURN(rc);
+int ldlm_run_ast_work(struct ldlm_namespace *ns, cfs_list_t *rpc_list,
+ ldlm_desc_ast_t ast_type)
+{
+ struct ldlm_cb_set_arg *arg;
+ set_producer_func work_ast_lock;
+ int rc;
+
+ if (cfs_list_empty(rpc_list))
+ RETURN(0);
+
+ OBD_ALLOC_PTR(arg);
+ if (arg == NULL)
+ RETURN(-ENOMEM);
+
+ cfs_atomic_set(&arg->restart, 0);
+ arg->list = rpc_list;
+
+ switch (ast_type) {
+ case LDLM_WORK_BL_AST:
+ arg->type = LDLM_BL_CALLBACK;
+ work_ast_lock = ldlm_work_bl_ast_lock;
+ break;
+ case LDLM_WORK_CP_AST:
+ arg->type = LDLM_CP_CALLBACK;
+ work_ast_lock = ldlm_work_cp_ast_lock;
+ break;
+ case LDLM_WORK_REVOKE_AST:
+ arg->type = LDLM_BL_CALLBACK;
+ work_ast_lock = ldlm_work_revoke_ast_lock;
+ break;
+ case LDLM_WORK_GL_AST:
+ arg->type = LDLM_GL_CALLBACK;
+ work_ast_lock = ldlm_work_gl_ast_lock;
+ break;
+ default:
+ LBUG();
+ }
+
+ /* We create a ptlrpc request set with flow control extension.
+ * This request set will use the work_ast_lock function to produce new
+ * requests and will send a new request each time one completes in order
+ * to keep the number of requests in flight to ns_max_parallel_ast */
+ arg->set = ptlrpc_prep_fcset(ns->ns_max_parallel_ast ? : UINT_MAX,
+ work_ast_lock, arg);
+ if (arg->set == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ ptlrpc_set_wait(arg->set);
+ ptlrpc_set_destroy(arg->set);
+
+ rc = cfs_atomic_read(&arg->restart) ? -ERESTART : 0;
+ GOTO(out, rc);
+out:
+ OBD_FREE_PTR(arg);
+ return rc;
}
static int reprocess_one_queue(struct ldlm_resource *res, void *closure)
LBUG();
}
- ldlm_del_waiting_lock(lock);
+ if (lock->l_waited)
+ ldlm_del_waiting_lock(lock);
/* Releases cancel callback. */
ldlm_cancel_callback(lock);
/* Yes, second time, just in case it was added again while we were
running with no res lock in ldlm_cancel_callback */
- ldlm_del_waiting_lock(lock);
+ if (lock->l_waited)
+ ldlm_del_waiting_lock(lock);
+
ldlm_resource_unlink_lock(lock);
ldlm_lock_destroy_nolock(lock);
}
EXPORT_SYMBOL(ldlm_lock_set_data);
+struct export_cl_data {
+ struct obd_export *ecl_exp;
+ int ecl_loop;
+};
+
int ldlm_cancel_locks_for_export_cb(cfs_hash_t *hs, cfs_hash_bd_t *bd,
cfs_hlist_node_t *hnode, void *data)
{
- struct obd_export *exp = data;
+ struct export_cl_data *ecl = (struct export_cl_data *)data;
+ struct obd_export *exp = ecl->ecl_exp;
struct ldlm_lock *lock = cfs_hash_object(hs, hnode);
struct ldlm_resource *res;
ldlm_reprocess_all(res);
ldlm_resource_putref(res);
LDLM_LOCK_RELEASE(lock);
- return 0;
+
+ ecl->ecl_loop++;
+ if ((ecl->ecl_loop & -ecl->ecl_loop) == ecl->ecl_loop) {
+ CDEBUG(D_INFO,
+ "Cancel lock %p for export %p (loop %d), still have "
+ "%d locks left on hash table.\n",
+ lock, exp, ecl->ecl_loop,
+ cfs_atomic_read(&hs->hs_count));
+ }
+
+ return 0;
}
void ldlm_cancel_locks_for_export(struct obd_export *exp)
{
- cfs_hash_for_each_empty(exp->exp_lock_hash,
- ldlm_cancel_locks_for_export_cb, exp);
+ struct export_cl_data ecl = {
+ .ecl_exp = exp,
+ .ecl_loop = 0,
+ };
+
+ cfs_hash_for_each_empty(exp->exp_lock_hash,
+ ldlm_cancel_locks_for_export_cb, &ecl);
}
/**
struct ldlm_resource *res;
struct ldlm_namespace *ns;
int granted = 0;
- int old_mode;
- struct sl_insert_point prev;
+#ifdef HAVE_SERVER_SUPPORT
+ int old_mode;
+ struct sl_insert_point prev;
+#endif
struct ldlm_interval *node;
ENTRY;
res = lock->l_resource;
ns = ldlm_res_to_ns(res);
- old_mode = lock->l_req_mode;
- lock->l_req_mode = new_mode;
- if (res->lr_type == LDLM_PLAIN || res->lr_type == LDLM_IBITS) {
- /* remember the lock position where the lock might be
- * added back to the granted list later and also
- * remember the join mode for skiplist fixing. */
- prev.res_link = lock->l_res_link.prev;
- prev.mode_link = lock->l_sl_mode.prev;
- prev.policy_link = lock->l_sl_policy.prev;
+#ifdef HAVE_SERVER_SUPPORT
+ old_mode = lock->l_req_mode;
+#endif
+ lock->l_req_mode = new_mode;
+ if (res->lr_type == LDLM_PLAIN || res->lr_type == LDLM_IBITS) {
+#ifdef HAVE_SERVER_SUPPORT
+ /* remember the lock position where the lock might be
+ * added back to the granted list later and also
+ * remember the join mode for skiplist fixing. */
+ prev.res_link = lock->l_res_link.prev;
+ prev.mode_link = lock->l_sl_mode.prev;
+ prev.policy_link = lock->l_sl_policy.prev;
+#endif
ldlm_resource_unlink_lock(lock);
} else {
ldlm_resource_unlink_lock(lock);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff