[GIT PULL] mm/vfs/fs:cleancache for 2.6.39 merge window (per akpm approval)

[GIT PULL] mm/vfs/fs:cleancache for 2.6.39 merge window (per akpm approval)

[Dan Magenheimer]

> From: Andrew Morton [mailto:akpm@linux-foundation.org]
> Sent: Thursday, March 17, 2011 1:47 PM
> To: Dan Magenheimer
> Subject: Re: PING**2: cleancache and 2.6.39 window?
> 
> Oh well, you may as well send a pull request to Linus then.  Please cc
> me on it.

Hi Linus --

Per offlist discussion with and the above approval from Andrew,
please pull:

git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem.git for-linus

since git commit cb655d0f3d57c23db51b981648e452988c0223f9:
Linus Torvalds (1):

    Linux 2.6.36-rc7

There are four trivial merge conflicts that Stephen Rothwell
has been carrying in linux-next, but I'm still an idiot with git
so am more likely to break something than successfully merge/rebase
and resolve these to your satisfaction.  Hope that's OK...

(And, in case of lingering concerns about cleancache, the hooks
in core code total 41 lines, were written by Chris Mason in
August 2008, and have not changed semantically since then,
so are very stable.  And there is now in 2.6.39 another
in-kernel-non-virtualization user in-tree -- drivers/staging/zcache
with more users in development to be discussed at LSF/MM.)

Thanks,
Dan

==========================

Dan Magenheimer (9):
      mm/fs: cleancache documentation
      fs: add field to superblock to support cleancache
      mm: cleancache core ops functions and config
      mm/fs: add hooks to support cleancache
      ext3: add cleancache support
      btrfs: add cleancache support
      ext4: add cleancache support
      ocfs2: add cleancache support
      xen: cleancache shim to Xen Transcendent Memory

 .../ABI/testing/sysfs-kernel-mm-cleancache         |   11 +
 Documentation/vm/cleancache.txt                    |  267 ++++++++++++++++++++
 arch/x86/include/asm/xen/hypercall.h               |    7 +
 drivers/xen/Makefile                               |    1 +
 drivers/xen/tmem.c                                 |  264 +++++++++++++++++++
 fs/btrfs/extent_io.c                               |    9 +
 fs/btrfs/super.c                                   |    2 +
 fs/buffer.c                                        |    5 +
 fs/ext3/super.c                                    |    2 +
 fs/ext4/super.c                                    |    2 +
 fs/mpage.c                                         |    7 +
 fs/ocfs2/super.c                                   |    2 +
 fs/super.c                                         |    3 +
 include/linux/cleancache.h                         |  118 +++++++++
 include/linux/fs.h                                 |    5 +
 include/xen/interface/xen.h                        |   22 ++
 mm/Kconfig                                         |   22 ++
 mm/Makefile                                        |    1 +
 mm/cleancache.c                                    |  245 ++++++++++++++++++
 mm/filemap.c                                       |   11 +
 mm/truncate.c                                      |   10 +
 21 files changed, 1016 insertions(+), 0 deletions(-)