在最近的Linux内核上测试msync的使用有什么好方法？

I am using msync in my application on Linux 2.6 to ensure consistency in the event of a crash. I need to thoroughly test my usage of msync but the implementation seems to be flushing all the relevant pages for me. Is there a way to prevent automatic flushing of mmap'd pages onto the disk to expose erroneous usage of msync on my part?I am using msync in my application on Linux 2.6