Disabling Copy-on-Write?

[tonyhuang]

Hello:
Is if an existing option for me to disable the copy-on-write features of the MMU? I'm doing this for a project. I do not see this on the config menus (or I did not find the correct place). If it's not an existing option, do anyone know how can I change the kernel so that it can do non-copy-on-write fork?

Thanks!

[Rubberman]

I don't see any such option in the kernel configuration settings so you may have to resort to some serious kernel hacking to disable COW in the MMU. However, bear in mind that I am not a kernel expert - I only know enough to be dangerous! You might want to post a question to the kernel.org forums to get better answers about this.

[tonyhuang]

I don't see any such option in the kernel configuration settings so you may have to resort to some serious kernel hacking to disable COW in the MMU. However, bear in mind that I am not a kernel expert - I only know enough to be dangerous! You might want to post a question to the kernel.org forums to get better answers about this.

Thank you. But where exactly is the kernel.org forum? I went to kernel.org but did not see any links to forums in particular.

[Rubberman]

You are correct about there not being user forums on the kernel.org site (sorry about the misinformation), but this is from their FAQ:

Q.
I have a question concerning the inner workings of the repositories, mirroring system, the Linux kernel, random thing hosted on kernel.org. Should I ask the kernel.org guys, they seem like a good place to start and their e-mail address is on this page!
A.

The kernel.org admin team probably isn't going to be of much help. It's not that we don't know or don't care but we have limited resources and we see a lot of e-mail in a day. We end up just not having enough time to answer it all and we focus on the things concerning kernel.org, so it's possible you won't even get a reply from us if you do ask... sorry.

However we suggest that if you have questions concerning something hosted on kernel.org that you go ahead and contact the project / maintainers directly. They sometimes have forums, irc channels, e-mail addresses, etc where you can ask your questions. Doing a search on any number of search engines may also answer your question.

But, as for some quick information on settings, configurations:

* Filesystem: xfs, mounted with "rw,noatime,nodiratime,nobarrier,logbsize=256k ".
* Web Server: Apache 2 (for the "sendfile" support), tweaked for available memory, long-running downloads, etc.
* FTP Server: vsftpd
* Gitweb: Custom gitweb w/ caching