[GIT PULL] md-fixes 20210922

Hi Jens, 

Please consider pulling the following changes for md-fixes on top of your 
block-5.15 branch. The changes are:
  1. Fix lock order reversal in md_alloc. (Christoph)
  2. Handle add_disk error in md_alloc. (Luis)
  3. Refactor md sysfs attrs, included because of dependency with 1 and 2. 
     (Christoph). 

Thanks,
Song



The following changes since commit 858560b27645e7e97aca37ee8f232cccd658fbd2:

  blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd (2021-09-15 12:03:18 -0600)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/song/md.git md-fixes

for you to fetch changes up to 36a0f29442237275abe33b73eac475c410bea6fa:

  md: properly unwind when failing to add the kobject in md_alloc (2021-09-22 08:46:00 -0700)

----------------------------------------------------------------
Christoph Hellwig (4):
      md: fix a lock order reversal in md_alloc
      md: add the bitmap group to the default groups for the md kobject
      md: extend disks_mutex coverage
      md: properly unwind when failing to add the kobject in md_alloc

Luis Chamberlain (1):
      md: add error handling support for add_disk()

 drivers/md/md.c | 56 +++++++++++++++++++++++++++++---------------------------
 1 file changed, 29 insertions(+), 27 deletions(-)