On Thu, Nov 12, 2020 at 06:12:03PM +0800, Aili Yao wrote: > If not this, please help point out!. If there's something you're not clear on, searching the kernel tree might help: [ ~/kernel/linux> git grep top-post Documentation/ Documentation/process/2.Process.rst:444:- Avoid top-posting (the practice of putting your answer above the quoted and now you open that document and read: "- Avoid top-posting (the practice of putting your answer above the quoted text you are responding to). It makes your response harder to read and makes a poor impression." Here's another example: A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? Also, read this: http://daringfireball.net/2007/07/on_top Also, you can look at mail threads on lkml to see how most people reply to mail - that also gives a good example what to do. I hope it is clear now. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette