Rails：多个`around_filter会导致数据库死锁吗？

Question

我的Rails 3应用程序有一个控制器，代码如下（粗略简化）示例：

class DogController < ApplicationController
  around_filter :notify_owner_of_name_change, only: [update]
  around_filter :notify_owner_of_weight_change, only: [update]

  ...

  private

  def notify_owner_of_name_change
    old_name = @dog.name
    yield
    new_name = @dog.name
    @dog.email_owner("Your dog changed its name from #{old_name} to #{new_name}") if old_name != new_name
  end

  def notify_owner_of_weight_change
    old_weight = @dog.weight
    yield
    new_weight = @dog.weight
    @dog.email_owner("Your dog's weight changed from #{old_weight} to #{new_weight}") if old_weight != new_weight
  end
end

当狗的信息更新时，它会命中名称更改过滤器，产生权重更改过滤器，产生更新操作，完成权重更改过滤器，然后完成名称更改过滤器。

此模式是否可能导致数据库级别的死锁？