[announce] rcu-walk and dcache scaling tree update

[Nick Piggin]

I'm rebasing the tree, because I don't expect anybody to be basing
downstream work on it, I hope that doesn't cause anybody pain.

Git tree is here:

  git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin.git

Branch is:

    vfs-scale-working

Changes since last posting:
* Added mntget/mntput scaling patch. I think this is important for
  testers because it significantly increases parallelism through the
  dcache and path walk. So both performance and races will get better
  test coverage.
* Missing vfs.txt documentation for new _rcu dentry and inode ops.
* Large improvements to Documentation/filesystems/path-walk.txt
* Improved some changelogs
* Added AMD fam10h numbers to ``memcmp optimisation'' changelog, and
  Westmere numbers to ``prefetch inode'' optimisation changelog. The
  AMD doesn't get such a big boost as the Intel CPU when avoiding rep
  cmp, but does get a small improvement.

Thanks,
Nick

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