/*
* rpciod-related stuff
*/
-static DEFINE_MUTEX(rpciod_mutex);
-static atomic_t rpciod_users = ATOMIC_INIT(0);
struct workqueue_struct *rpciod_workqueue;
/*
task->tk_pid, size, buf);
return &buf->data;
}
+EXPORT_SYMBOL_GPL(rpc_malloc);
/**
* rpc_free - free buffer allocated via rpc_malloc
else
kfree(buf);
}
+EXPORT_SYMBOL_GPL(rpc_free);
/*
* Creation and deletion of RPC task structures
void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt, int flags, const struct rpc_call_ops *tk_ops, void *calldata)
{
memset(task, 0, sizeof(*task));
- init_timer(&task->tk_timer);
- task->tk_timer.data = (unsigned long) task;
- task->tk_timer.function = (void (*)(unsigned long)) rpc_run_timer;
+ setup_timer(&task->tk_timer, (void (*)(unsigned long))rpc_run_timer,
+ (unsigned long)task);
atomic_set(&task->tk_count, 1);
task->tk_client = clnt;
task->tk_flags = flags;
task->tk_start = jiffies;
dprintk("RPC: new task initialized, procpid %u\n",
- current->pid);
+ task_pid_nr(current));
}
static struct rpc_task *
rpc_put_task(task);
}
-/**
- * rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
- * @clnt: pointer to RPC client
- * @flags: RPC flags
- * @ops: RPC call ops
- * @data: user call data
- */
-struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
- const struct rpc_call_ops *ops,
- void *data)
-{
- struct rpc_task *task;
- task = rpc_new_task(clnt, flags, ops, data);
- if (task == NULL) {
- rpc_release_calldata(ops, data);
- return ERR_PTR(-ENOMEM);
- }
- atomic_inc(&task->tk_count);
- rpc_execute(task);
- return task;
-}
-EXPORT_SYMBOL(rpc_run_task);
-
/*
* Kill all tasks for the given client.
* XXX: kill their descendants as well?
spin_unlock(&clnt->cl_lock);
}
+int rpciod_up(void)
+{
+ return try_module_get(THIS_MODULE) ? 0 : -EINVAL;
+}
+
+void rpciod_down(void)
+{
+ module_put(THIS_MODULE);
+}
+
/*
- * Start up the rpciod process if it's not already running.
+ * Start up the rpciod workqueue.
*/
-int
-rpciod_up(void)
+static int rpciod_start(void)
{
struct workqueue_struct *wq;
- int error = 0;
-
- if (atomic_inc_not_zero(&rpciod_users))
- return 0;
- mutex_lock(&rpciod_mutex);
-
- /* Guard against races with rpciod_down() */
- if (rpciod_workqueue != NULL)
- goto out_ok;
/*
* Create the rpciod thread and wait for it to start.
*/
dprintk("RPC: creating workqueue rpciod\n");
- error = -ENOMEM;
wq = create_workqueue("rpciod");
- if (wq == NULL)
- goto out;
-
rpciod_workqueue = wq;
- error = 0;
-out_ok:
- atomic_inc(&rpciod_users);
-out:
- mutex_unlock(&rpciod_mutex);
- return error;
+ return rpciod_workqueue != NULL;
}
-void
-rpciod_down(void)
+static void rpciod_stop(void)
{
- if (!atomic_dec_and_test(&rpciod_users))
- return;
+ struct workqueue_struct *wq = NULL;
- mutex_lock(&rpciod_mutex);
+ if (rpciod_workqueue == NULL)
+ return;
dprintk("RPC: destroying workqueue rpciod\n");
- if (atomic_read(&rpciod_users) == 0 && rpciod_workqueue != NULL) {
- destroy_workqueue(rpciod_workqueue);
- rpciod_workqueue = NULL;
- }
- mutex_unlock(&rpciod_mutex);
+ wq = rpciod_workqueue;
+ rpciod_workqueue = NULL;
+ destroy_workqueue(wq);
}
void
rpc_destroy_mempool(void)
{
+ rpciod_stop();
if (rpc_buffer_mempool)
mempool_destroy(rpc_buffer_mempool);
if (rpc_task_mempool)
rpc_task_slabp = kmem_cache_create("rpc_tasks",
sizeof(struct rpc_task),
0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
+ NULL);
if (!rpc_task_slabp)
goto err_nomem;
rpc_buffer_slabp = kmem_cache_create("rpc_buffers",
RPC_BUFFER_MAXSIZE,
0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
+ NULL);
if (!rpc_buffer_slabp)
goto err_nomem;
rpc_task_mempool = mempool_create_slab_pool(RPC_TASK_POOLSIZE,
rpc_buffer_slabp);
if (!rpc_buffer_mempool)
goto err_nomem;
+ if (!rpciod_start())
+ goto err_nomem;
return 0;
err_nomem:
rpc_destroy_mempool();