[GIT PULL] Ceph fixes for 2.6.38-rc6

[Sage Weil]

Hi Linus,

Please pull the following Ceph fixes from

  git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git for-linus

The main item here is a workaround for a regression caused by the dcache 
RCU stuff.  d_kill now clears d_parent prior to the release dentry op, 
which causes a NULL pointer dereference in the ceph code.  Nick said this 
should be easy enough to fix[1], but he's offline and it seems a bit late 
to futz with the core dcache code.  This patch basically just makes a copy 
of d_parent in the private d_fsdata struct.  We can revert it once the 
d_kill/d_parent thing gets fixed up, presumably during the next merge 
window.

There are also some error handling fixes and a fix for an possible 
infinite loop in the snapshot notification handler.

Thanks-
sage

[1] http://marc.info/?l=linux-fsdevel&m=129610552517424&w=2


Sage Weil (3):
      libceph: fix socket read error handling
      libceph: fix socket write error handling
      ceph: queue cap_snaps once per realm

Yehuda Sadeh (1):
      ceph: keep reference to parent inode on ceph_dentry

 fs/ceph/dir.c        |    5 +++-
 fs/ceph/snap.c       |   14 ++++++++---
 fs/ceph/super.h      |    1 +
 net/ceph/messenger.c |   62 +++++++++++++++++++++++++-------------------------
 4 files changed, 46 insertions(+), 36 deletions(-)
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