[GIT PULL] MD update for 4.8

[Shaohua Li]

Hi,

Please pull MD update for 4.8. The patches are based on 4.7 rc initially, I
merged them to lastest upstream to fix merge conflict against block layer
changes:
- A bunch of patches from Neil Brown to fix RCU usage
- Two performance improvement patches from Tomasz Majchrzak
- Alexey Obitotskiy fixes module refcount issue
- Arnd Bergmann fixes time granularity
- Cong Wang fixes a list corruption issue
- Guoqing Jiang fixes a deadlock in md-cluster
- A null pointer deference fix from me
- Song Liu fixes misuse of raid6 rmw
- Other trival/cleanup fixes from Guoqing Jiang and Xiao Ni

Thanks,
Shaohua

The following changes since commit 194dc870a5890e855ecffb30f3b80ba7c88f96d6:

  Add braces to avoid "ambiguous âelseâ" compiler warnings (2016-07-27 20:03:31 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/shli/md.git for-linus

for you to fetch changes up to 3f35e210ed4617a68b6baa9b7ac6c72bf7e313d9:

  Merge branch 'mymd/for-next' into mymd/for-linus (2016-07-28 09:34:14 -0700)

----------------------------------------------------------------
Alexey Obitotskiy (1):
      Fix kernel module refcount handling

Arnd Bergmann (1):
      md: use seconds granularity for error logging

Cong Wang (1):
      md: use a mutex to protect a global list

Guoqing Jiang (2):
      md-cluster: fix deadlock issue when add disk to an recoverying array
      md: simplify the code with md_kick_rdev_from_array

NeilBrown (17):
      md: disconnect device from personality before trying to remove it.
      md/raid1, raid10: don't recheck "Faulty" flag in read-balance.
      md/raid10: fix refounct imbalance when resyncing an array with a replacement device.
      md/raid10: add rcu protection in raid10_status.
      md/raid10: add rcu protection to rdev access in raid10_sync_request.
      md/raid10: add rcu protection to rdev access during reshape.
      md/raid10: minor code improvement in fix_read_error()
      md/raid10: simplify print_conf a little.
      md/raid1: small cleanup in raid1_end_read/write_request
      md/raid1: small code cleanup in end_sync_write
      md/raid1: add rcu protection to rdev in fix_read_error
      md/raid5: add rcu protection to rdev accesses in handle_failed_sync.
      md/raid5: add rcu protection to rdev accesses in want_replace
      md/raid5: add rcu protection to rdev accesses in raid5_status.
      md/multipath: add rcu protection to rdev access in multipath_status.
      md: be extra careful not to take a reference to a Faulty device.
      md: reduce the number of synchronize_rcu() calls when multiple devices fail.

Shaohua Li (2):
      MD: fix null pointer deference
      Merge branch 'mymd/for-next' into mymd/for-linus

Song Liu (1):
      right meaning of PARITY_ENABLE_RMW and PARITY_PREFER_RMW

Tomasz Majchrzak (3):
      raid1/raid10: slow down resync if there is non-resync activity pending
      md: add missing sysfs_notify on array_state update
      raid10: improve random reads performance

Xiao Ni (1):
      MD:Update superblock when err == 0 in size_store

 drivers/md/md.c        |  74 +++++++++++----
 drivers/md/md.h        |  10 +-
 drivers/md/multipath.c |  29 +++---
 drivers/md/raid1.c     | 130 ++++++++++++-------------
 drivers/md/raid10.c    | 250 ++++++++++++++++++++++++++++++-------------------
 drivers/md/raid10.h    |   3 +-
 drivers/md/raid5.c     |  45 +++++----
 7 files changed, 328 insertions(+), 213 deletions(-)