Current patches
Kernels older than 2.6.24 also need the I_LOCK patch. The LogFS patch should apply to older kernels down to 2.6.21. If it causes any problems, send a mail.
To apply patches, use "patch -p1" in the kernel directory.
latest LogFS patch for 2.6.25
latest I_LOCK patch for 2.6.23
You will also need the seperate mklogfs: