[GIT PULL -mm] 0/4 Unionfs updates/fixes/cleanups

[Erez Zadok <ezk@cs.sunysb.edu>]

The following is a series of patchsets related to Unionfs.  This is the
fifth set of patchsets resulting from an lkml review of the entire unionfs
code base, in preparation for a merge into mainline.  The most significant
changes here are a few locking related fixes, and a correction to broken
logic which didn't allow writing to the first available writable branch.

These patches were tested (where appropriate) on 2.6.24, MM, as well as the
backports to 2.6.{23,22,21,20,19,18,9} on ext2/3/4, xfs, reiserfs, nfs2/3/4,
jffs2, ramfs, tmpfs, cramfs, and squashfs (where available).  Also tested
with LTP-full and with a continuous parallel kernel compile (while forcing
cache flushing, manipulating lower branches, etc.).  See
http://unionfs.filesystems.org/ to download back-ported unionfs code.

Please pull from the 'master' branch of
git://git.kernel.org/pub/scm/linux/kernel/git/ezk/unionfs.git

to receive the following:

Erez Zadok (4):
      Unionfs: use first writable branch (fix/cleanup)
      Unionfs: remove unnecessary call to d_iput
      Unionfs: d_parent related locking fixes
      Unionfs: lock_rename related locking fixes

 copyup.c |   16 --
 inode.c  |  395 ++++++++++++++++++++++++---------------------------------------
 rename.c |   16 ++
 union.h  |    4 
 4 files changed, 174 insertions(+), 257 deletions(-)

---
Erez Zadok
ezk@cs.sunysb.edu