A log-based filesystem
You must download the Linux kernel headers to compile this kernel module. On Arch Linux:
# pacman -S linux-headers
# cd /usr/lib/$(uname -r)/build
# make mrproper
# cp .config /path/to/project/src
# chown your_user:optional_group /path/to/project/src/.config
You can also get the source from github, just make sure to checkout the appropriate tag. At the time of writing, the stable Arch kernel is 4.3.3