> Do the kernel maintainers know that they have to update the patch with
every new kernel release?

I assume yes, but I'm still attempting to patch UFS 2.0 into the Feisty
LIveCD/USB kernel because Feisty contains bits and pieces of UnionFS
1.3, which is incorrect for the 2.6.20 kernel.  I don't know if these
bits are "active" or simply "vestigial."

This is, allegedly, the correct UnionFS patch for a 2.6.20 kernel:
 
ftp://ftp.filesystems.org/pub/unionfs/unionfs-2.x/linux-2.6.20-u1.diff.gz

I downloaded linux-source-2.6.20_2.6.20.orig and  linux-
source-2.6.20_2.6.20.  (Forgive my Ubuntu newbishness--does anyone have
a link to a wiki explaining the Ubuntu kernel/patch file naming
conventions--I find all the seemingly redundant kernel source file
packages that pop up in a Synaptic search to be very confusing.)
Ideally, I'd like to find the patches to take the Ubuntu kernel all the
way back to a vanilla kernel (Ubuntu + Debian diffs?)

I have not yet applied the -16.28.diff patch but decided to work,
initially, with the original Ubuntu 2.6.20 source.  I removed the
"config UNION_FS" section from the bottom of
/usr/src/linux/ubuntu/Kconfig and applied the UnionFS patch from above.
It reported that some of the UnionFS patches were already applied to the
Ubuntu kernel source and I answered "N" to not reapply those sections.
I built the .deb packages and successfully installed and booted the new
kernel with UnionFS 2.0 on my development machine.  I have not yet had
time to install the new kernel on the Feisty LiveCD/USB system and I
have no idea if UnionFS 2,0 is even working.  I may soon find that the
UnionFS scripts in the Feisty LiveCD (scripted for UnionFS 1.3?) don't
even work with UnionFS 2.0, regardless.

-Cal

-- 
feisty 20070210/herd5 persistent mode doesn't work
https://bugs.launchpad.net/bugs/84591
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