[PULL REQUEST] more md fixes for 3.1

Hi Linus,
a few more little fixes for md for 3.1
One is not in md code but is triggered by md.
one is a minor fix needed to prepare for the next
one fixed a bug introduced in 3.1
last is a longer standing bug which is cc:ed to stable.

Thanks,
NeilBrown



The following changes since commit ddf28352b80c86754a6424e3a61e8bdf9213b3c7:

Linux 3.1-rc5 (2011-09-04 15:45:10 -0700)

are available in the git repository at:
git://neil.brown.name/md for-linus

NeilBrown (4):
Avoid dereferencing a 'request_queue' after last close.
md/raid10: unify handling of write completion.
md/raid1,10: Remove use-after-free bug in make_request.
md: Fix handling for devices from 2TB to 4TB in 0.90 metadata.

drivers/md/md.c | 12 ++++++++++--
drivers/md/raid1.c | 14 +++++++++-----
drivers/md/raid10.c | 47 ++++++++++++++++++++++++-----------------------
fs/block_dev.c | 7 +++++--
4 files changed, 48 insertions(+), 32 deletions(-)