Wenbo Zhang

> Thank you for your report! What if you change one source file and rebuild? Is it slow too? Yes, it's slow too.

@lilyjazz 有些地方的描述不大精确，请先参考：https://man7.org/linux/man-pages/man5/proc.5.html 修正下谢谢！

@gitdhar @yonghong-song As `int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)`'s PARM1 and PRAM2 is passed by reference, so can we check a specific dest port/ip then modify with...

> I am not sure how you could do that. the `sk` and `uaddr` actually are kernel addresses. They are not marked with __user. Checking the kernel code, the information...

I have implemented this by A) and committed to http://patchwork.ozlabs.org/patch/1179287/ PTAL

Because aarch64 default page size is 64kb, one THP size will be 512MB. @fubinzh

This PR is based on https://github.com/tikv/tikv/pull/12972. Please help me review whether the execution process of the code is correct, whether there are any omissions, etc. Thank you. @Connor1996 @BusyJay

@jebter Has discussed with @mayjiang0203 , She'll reproduce this, then we'll investigate why

> What's the purpose of this PR? It'll be used to judge pending peer: whose (except witness) apply index is smaller than leader's truncated index

> Please add a test if possible I found it's hard to add tests without witness feature, so I implied tests in the next pr.