- mutex_lock(&nfs_callback_mutex);
- nfs_callback_info.users--;
- do {
- if (nfs_callback_info.users != 0 || nfs_callback_info.pid == 0)
- break;
- if (kill_proc(nfs_callback_info.pid, SIGKILL, 1) < 0)
- break;
- } while (wait_for_completion_timeout(&nfs_callback_info.stopped, 5*HZ) == 0);
- mutex_unlock(&nfs_callback_mutex);
+ down(&nfs_callback_sema);
+ if (--nfs_callback_info.users || nfs_callback_info.pid == 0)
+ goto out;
+ kill_proc(nfs_callback_info.pid, SIGKILL, 1);
+ wait_for_completion(&nfs_callback_info.stopped);
+out:
+ up(&nfs_callback_sema);