extern cfs_mem_cache_t *ldlm_resource_slab;
extern cfs_mem_cache_t *ldlm_lock_slab;
-extern struct list_head ldlm_namespace_list;
-
-extern struct semaphore ldlm_namespace_lock;
static struct semaphore ldlm_ref_sem;
static int ldlm_refcount;
struct ldlm_namespace *blwi_ns;
struct ldlm_lock_desc blwi_ld;
struct ldlm_lock *blwi_lock;
- int blwi_flags;
+ struct list_head blwi_head;
+ int blwi_count;
};
#ifdef __KERNEL__
char *str = libcfs_nid2str(conn->c_peer.nid);
LCONSOLE_ERROR_MSG(0x138, "A client on nid %s was evicted from "
- "service %s.\n", str,
+ "service %s.\n", str,
lock->l_export->exp_obd->obd_name);
LCONSOLE_ERROR_MSG(0x012, "Lock %s callback to %s timed out for "
- "resource %d\n", ast_type,
+ "resource %d\n", ast_type,
obd_export_nid2str(lock->l_export), rc);
if (obd_dump_on_timeout)
return rc;
}
+/*
+ * ->l_blocking_ast() method for server-side locks. This is invoked when newly
+ * enqueued server lock conflicts with given one.
+ *
+ * Sends blocking ast rpc to the client owning that lock; arms timeout timer
+ * to wait for client response.
+ */
int ldlm_server_blocking_ast(struct ldlm_lock *lock,
struct ldlm_lock_desc *desc,
void *data, int flag)
if (instant_cancel) {
unlock_res(lock->l_resource);
ldlm_lock_cancel(lock);
- } else if (lock->l_granted_mode == lock->l_req_mode) {
+ } else {
+ LASSERT(lock->l_granted_mode == lock->l_req_mode);
ldlm_add_waiting_lock(lock);
unlock_res(lock->l_resource);
}
rc = ptlrpc_queue_wait(req);
OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2);
}
-
- if (rc != 0)
+ if (rc != 0) {
+ /* 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)
+ ldlm_res_lvbo_update(lock->l_resource, NULL, 0, 1);
rc = ldlm_handle_ast_error(lock, req, rc, "blocking");
+ }
ptlrpc_req_finished(req);
LDLM_DEBUG(lock, "server preparing completion AST (after %ldus wait)",
total_enqueue_wait);
-
+
ptlrpc_req_set_repsize(req, 1, NULL);
req->rq_send_state = LUSTRE_IMP_FULL;
else if (rc != 0)
rc = ldlm_handle_ast_error(lock, req, rc, "glimpse");
else
- rc = res->lr_namespace->ns_lvbo->lvbo_update
- (res, req->rq_repmsg, REPLY_REC_OFF, 1);
+ rc = ldlm_res_lvbo_update(res, req->rq_repmsg,
+ REPLY_REC_OFF, 1);
ptlrpc_req_finished(req);
RETURN(rc);
}
lock = find_existing_lock(req->rq_export,
&dlm_req->lock_handle[0]);
if (lock != NULL) {
- DEBUG_REQ(D_HA, req, "found existing lock cookie "LPX64,
- lock->l_handle.h_cookie);
+ DEBUG_REQ(D_DLMTRACE, req, "found existing lock cookie "
+ LPX64, lock->l_handle.h_cookie);
GOTO(existing_lock, rc = 0);
}
}
unlock_res_and_lock(lock);
ldlm_lock_cancel(lock);
lock_res_and_lock(lock);
- } else if (lock->l_granted_mode == lock->l_req_mode)
+ } else
ldlm_add_waiting_lock(lock);
}
}
LDLM_DEBUG(lock, "server-side enqueue handler, sending reply"
"(err=%d, rc=%d)", err, rc);
+ lock_res_and_lock(lock);
if (rc == 0) {
- lock_res_and_lock(lock);
size[DLM_REPLY_REC_OFF] = lock->l_resource->lr_lvb_len;
if (size[DLM_REPLY_REC_OFF] > 0) {
void *lvb = lustre_msg_buf(req->rq_repmsg,
memcpy(lvb, lock->l_resource->lr_lvb_data,
size[DLM_REPLY_REC_OFF]);
}
- unlock_res_and_lock(lock);
} else {
- lock_res_and_lock(lock);
ldlm_resource_unlink_lock(lock);
ldlm_lock_destroy_nolock(lock);
- unlock_res_and_lock(lock);
}
+ unlock_res_and_lock(lock);
if (!err && dlm_req->lock_desc.l_resource.lr_type != LDLM_FLOCK)
ldlm_reprocess_all(lock->l_resource);
if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
RETURN(0);
- LDLM_DEBUG_NOLOCK("server-side cancel handler START: %d locks",
- count - first);
+ LDLM_DEBUG_NOLOCK("server-side cancel handler START: %d locks, "
+ "starting at %d", count, first);
+
for (i = first; i < count; i++) {
lock = ldlm_handle2lock(&dlm_req->lock_handle[i]);
if (!lock) {
res = lock->l_resource;
done++;
- ldlm_lock_cancel(lock);
- if (ldlm_del_waiting_lock(lock))
- CDEBUG(D_DLMTRACE, "cancelled waiting lock %p\n", lock);
if (res != pres) {
if (pres != NULL) {
- if (pres->lr_namespace->ns_lvbo &&
- pres->lr_namespace->ns_lvbo->lvbo_update) {
- (void)pres->lr_namespace->ns_lvbo->
- lvbo_update(pres, NULL, 0, 1);
- }
ldlm_reprocess_all(pres);
ldlm_resource_putref(pres);
}
- if (res != NULL)
+ if (res != NULL) {
ldlm_resource_getref(res);
+ ldlm_res_lvbo_update(res, NULL, 0, 1);
+ }
pres = res;
}
+ ldlm_lock_cancel(lock);
LDLM_LOCK_PUT(lock);
}
if (pres != NULL) {
- if (pres->lr_namespace->ns_lvbo &&
- pres->lr_namespace->ns_lvbo->lvbo_update) {
- (void)pres->lr_namespace->ns_lvbo->
- lvbo_update(pres, NULL, 0, 1);
- }
ldlm_reprocess_all(pres);
ldlm_resource_putref(pres);
}
CERROR("out of memory\n");
RETURN(-ENOMEM);
}
-
+
if (!ldlm_request_cancel(req, dlm_req, 0))
req->rq_status = ESTALE;
cfs_time_add(lock->l_last_used,
cfs_time_seconds(10)))) {
unlock_res_and_lock(lock);
- if (ldlm_bl_to_thread(ns, NULL, lock, 0))
+ if (ldlm_bl_to_thread_lock(ns, NULL, lock))
ldlm_handle_bl_callback(ns, NULL, lock);
EXIT;
return ptlrpc_reply(req);
}
-int ldlm_bl_to_thread(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
- struct ldlm_lock *lock, int flags)
-{
#ifdef __KERNEL__
+static int ldlm_bl_to_thread(struct ldlm_namespace *ns,
+ struct ldlm_lock_desc *ld, struct ldlm_lock *lock,
+ struct list_head *cancels, int count)
+{
struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
struct ldlm_bl_work_item *blwi;
ENTRY;
+ if (cancels && count == 0)
+ RETURN(0);
+
OBD_ALLOC(blwi, sizeof(*blwi));
if (blwi == NULL)
RETURN(-ENOMEM);
blwi->blwi_ns = ns;
if (ld != NULL)
blwi->blwi_ld = *ld;
- blwi->blwi_lock = lock;
- blwi->blwi_flags = flags;
-
+ if (count) {
+ list_add(&blwi->blwi_head, cancels);
+ list_del_init(cancels);
+ blwi->blwi_count = count;
+ } else {
+ blwi->blwi_lock = lock;
+ }
spin_lock(&blp->blp_lock);
list_add_tail(&blwi->blwi_entry, &blp->blp_list);
cfs_waitq_signal(&blp->blp_waitq);
spin_unlock(&blp->blp_lock);
RETURN(0);
+}
+#endif
+
+int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
+ struct ldlm_lock *lock)
+{
+#ifdef __KERNEL__
+ RETURN(ldlm_bl_to_thread(ns, ld, lock, NULL, 0));
+#else
+ RETURN(-ENOSYS);
+#endif
+}
+
+int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
+ struct list_head *cancels, int count)
+{
+#ifdef __KERNEL__
+ RETURN(ldlm_bl_to_thread(ns, ld, NULL, cancels, count));
#else
RETURN(-ENOSYS);
#endif
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));
lock = ldlm_handle2lock_ns(ns, &dlm_req->lock_handle[0]);
if (!lock) {
- CDEBUG(D_INODE, "callback on lock "LPX64" - lock disappeared\n",
- dlm_req->lock_handle[0].cookie);
+ CDEBUG(D_DLMTRACE, "callback on lock "LPX64" - lock "
+ "disappeared\n", dlm_req->lock_handle[0].cookie);
ldlm_callback_reply(req, -EINVAL);
RETURN(0);
}
/* Copy hints/flags (e.g. LDLM_FL_DISCARD_DATA) from AST. */
lock_res_and_lock(lock);
lock->l_flags |= (dlm_req->lock_flags & LDLM_AST_FLAGS);
+ if (lustre_msg_get_opc(req->rq_reqmsg) == LDLM_BL_CALLBACK) {
+ /* If somebody cancels locks and cache is already droped,
+ * we can tell the server we have no lock. Otherwise, we
+ * should send cancel after dropping the cache. */
+ if ((lock->l_flags & LDLM_FL_CANCELING) &&
+ (lock->l_flags & LDLM_FL_BL_DONE)) {
+ LDLM_DEBUG(lock, "callback on lock "
+ LPX64" - lock disappeared\n",
+ dlm_req->lock_handle[0].cookie);
+ unlock_res_and_lock(lock);
+ LDLM_LOCK_PUT(lock);
+ ldlm_callback_reply(req, -EINVAL);
+ RETURN(0);
+ }
+ lock->l_flags |= LDLM_FL_BL_AST;
+ }
unlock_res_and_lock(lock);
/* We want the ost thread to get this reply so that it can respond
CDEBUG(D_INODE, "blocking ast\n");
if (!(lock->l_flags & LDLM_FL_CANCEL_ON_BLOCK))
ldlm_callback_reply(req, 0);
- if (ldlm_bl_to_thread(ns, &dlm_req->lock_desc, lock, 0))
+ if (ldlm_bl_to_thread_lock(ns, &dlm_req->lock_desc, lock))
ldlm_handle_bl_callback(ns, &dlm_req->lock_desc, lock);
break;
case LDLM_CP_CALLBACK:
if (blwi->blwi_ns == NULL)
break;
- if (blwi->blwi_flags == LDLM_FL_CANCELING) {
+ if (blwi->blwi_count) {
/* The special case when we cancel locks in lru
- * asynchronously, then we first remove the lock from
- * l_bl_ast explicitely in ldlm_cancel_lru before
- * sending it to this thread. Thus lock is marked
- * LDLM_FL_CANCELING, and already cancelled locally. */
- CFS_LIST_HEAD(head);
- LASSERT(list_empty(&blwi->blwi_lock->l_bl_ast));
- list_add(&blwi->blwi_lock->l_bl_ast, &head);
- ldlm_cli_cancel_req(blwi->blwi_lock->l_conn_export,
- &head, 1, 0);
- LDLM_LOCK_PUT(blwi->blwi_lock);
+ * asynchronously, we pass the list of locks here.
+ * Thus lock is marked LDLM_FL_CANCELING, and already
+ * canceled locally. */
+ ldlm_cli_cancel_list(&blwi->blwi_head,
+ blwi->blwi_count, NULL, 0, 0);
} else {
ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
blwi->blwi_lock);
expired_lock_thread.elt_state == ELT_READY);
#endif
+#ifdef __KERNEL__
+ rc = ldlm_pools_init();
+ if (rc)
+ GOTO(out_thread, rc);
+#endif
RETURN(0);
#ifdef __KERNEL__
#endif
ENTRY;
- if (!list_empty(&ldlm_namespace_list)) {
+ 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(D_DLMTRACE);
+ ldlm_dump_all_namespaces(LDLM_NAMESPACE_SERVER, D_DLMTRACE);
+ ldlm_dump_all_namespaces(LDLM_NAMESPACE_CLIENT, D_DLMTRACE);
RETURN(-EBUSY);
}
#ifdef __KERNEL__
+ ldlm_pools_fini();
+#endif
+
+#ifdef __KERNEL__
while (atomic_read(&blp->blp_num_threads) > 0) {
struct ldlm_bl_work_item blwi = { .blwi_ns = NULL };
int __init ldlm_init(void)
{
init_mutex(&ldlm_ref_sem);
- init_mutex(&ldlm_namespace_lock);
+ init_mutex(ldlm_namespace_lock(LDLM_NAMESPACE_SERVER));
+ init_mutex(ldlm_namespace_lock(LDLM_NAMESPACE_CLIENT));
ldlm_resource_slab = cfs_mem_cache_create("ldlm_resources",
sizeof(struct ldlm_resource), 0,
SLAB_HWCACHE_ALIGN);
EXPORT_SYMBOL(target_send_reply);
EXPORT_SYMBOL(target_queue_recovery_request);
EXPORT_SYMBOL(target_handle_ping);
+EXPORT_SYMBOL(target_pack_pool_reply);
EXPORT_SYMBOL(target_handle_disconnect);
/* l_lock.c */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff