[GIT PULL REQUEST] md updates for 3.18

[NeilBrown]

Hi Linus,
here are some md updates for 3.18.

Thanks,
NeilBrown


The following changes since commit 8e0e99ba64c7ba46133a7c8a3e3f7de01f23bd93:

md/raid5: disable 'DISCARD' by default due to safety concerns. (2014-10-02 13:45:00 +1000)

are available in the git repository at:

git://neil.brown.name/md tags/md/3.18

for you to fetch changes up to b395f75eabb3844c99244928293796ff42feaa3d:

lib/raid6: Add log level to printks (2014-10-14 13:08:29 +1100)

----------------------------------------------------------------
md updates for 3.18

- a few minor bug fixes
- quite a lot of code tidy-up and simplification
- remove PRINT_RAID_DEBUG ioctl. I'm fairly sure
it is unused, and it isn't particularly useful.

----------------------------------------------------------------
Anton Blanchard (1):
lib/raid6: Add log level to printks

Chao Yu (1):
md: avoid potential long delay under pers_lock

Markus Stockhausen (1):
md/raid5: fix init_stripe() inconsistencies

NeilBrown (18):
md/bitmap: always wait for writes on unplug.
md/raid1: minor typos and reformatting.
md: use set_bit/clear_bit instead of shift/mask for bi_flags changes.
md/raid10: another memory leak due to reshape.
md/raid1: process_checks doesn't use its return value.
md: be more relaxed about stopping an array which isn't started.
md: use wait_event() to simplify md_super_wait()
md: discard find_rdev_nr in favour of find_rdev_nr_rcu
md: simplify export_array()
md: Just use RCU when checking for overlap between arrays.
md: don't start resync thread directly from md thread.
md: remove unwanted white space from md.c
md: don't allow "-sync" to be set for device in an active array.
md: remove unnecessary test for MD_MAJOR in md_ioctl()
md: clean up 'exit' labels in md_ioctl().
md: remove MD_BUG()
md: discard PRINT_RAID_DEBUG ioctl
md: move EXPORT_SYMBOL to after function in md.c

drivers/md/bitmap.c | 16 +-
drivers/md/linear.c | 8 +-
drivers/md/md.c | 601 +++++++++++++----------------------------
drivers/md/md.h | 34 ++-
drivers/md/multipath.c | 28 +-
drivers/md/raid0.c | 9 +-
drivers/md/raid1.c | 37 +--
drivers/md/raid1.h | 2 -
drivers/md/raid10.c | 18 +-
drivers/md/raid5.c | 29 +-
drivers/md/raid5.h | 4 +-
include/uapi/linux/raid/md_u.h | 1 -
lib/raid6/algos.c | 12 +-
13 files changed, 266 insertions(+), 533 deletions(-)