compile btrfs for 2.6.27-rc9

Hello everyone,

I am trying to compile btrfs.ko (unstable) for 2.6.27-rc9. I copied btrfs part of Kbuild, and fs/btrfs to my 2.6.27-rc9 tree.

Then make modules modules_install
However, I can't insmod btrfs.ko. Dmesg ouput:

[ 8973.920435] btrfs: no symbol version for struct_module
[ 8994.375255] btrfs: no symbol version for struct_module
[ 9049.174891] btrfs: no symbol version for struct_module
[ 9125.963989] btrfs: no symbol version for struct_module
[ 9178.504381] btrfs: no version for "struct_module" found: kernel
tainted.
[ 9178.513086] btrfs: Unknown symbol security_inode_mkdir

Is there a better way to do it ? I am running ubuntu.

Cheers,

Xavier Nicollet

If you use git, you will not have to manually copy the btrfs directory and keep track of other changes(fs/Kconfig and fs/Makefile).

This is how I manage it with git. My knowledge of git is pretty bare minimum so I am sure there are better ways of doing it. Anyway, here goes.

You can replace all the "ab1-*" names with your own branch names.
[1] $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
[2] $ cd linux-2.6
[3] $ git remote add btrfs git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git

[4] $ git fetch btrfs
[5] $ git checkout -b ab1-v2.6.27 v2.6.27
[6] $ git branch ab1-btrfs btrfs/master
[7] $ git pull . ab1-btrfs

Now you have merged "btrfs" tree into the "linus" tree. Do your kernel compile as usual and install the new kernel. If you don't need those branches anymore delete them.
[8] $ git checkout master
[9] $ git branch -D ab1-btrfs
[10] $ git branch -D ab1-v2.6.27

When "linus" tree gets updated you can do a "git pull" to get the changes. When "btrfs" tree has changes repeat from step 4 to build a new kernel with btrfs.

-Arun

This is fixed now, if you pull from the git tree you'll have the patch.

Thanks,
Chris