There isn’t a tree that contains reiser4, suspend2 and the gentoo patches — so I created one. This revision adds the -stable patches, new gentoo patches and some powertop patches.
One big patch: bw-r1-for-2.6.21.diff.bz2
Patches broken out: bw-r1-for-2.6.21.tar.bz2
To apply the one big patch, use: bzcat bw-r1-for-2.6.21.diff.bz2 | patch -p1 inside a vanilla 2.6.21.