[PATCH 0/6] Misc changes for md

Hello,

The first patch fixes the same calltrace as commit 6607cd319b6b ("raid1:
ensure write behind bio has less than BIO_MAX_VECS sectors") tried 
before, but unfortunately the calltrace still could happen if array
without write mostly device is configured with write-behind enabled.
So the first patch is suitable for fix branch which others are materials
for next branch.

Pls review.

Thanks,
Guoqing

Guoqing Jiang (6):
  md/raid1: only allocate write behind bio for WriteMostly device
  md/bitmap: don't set max_write_behind if there is no write mostly
    device
  md/raid1: use rdev in raid1_write_request directly
  md/raid10: add 'read_err' to raid10_read_request
  md/raid5: call roundup_pow_of_two in raid5_run
  md: remove unused argument from md_new_event

 drivers/md/md-bitmap.c | 17 +++++++++++++++++
 drivers/md/md.c        | 30 +++++++++++++++---------------
 drivers/md/md.h        |  2 +-
 drivers/md/raid1.c     | 13 ++++++-------
 drivers/md/raid10.c    | 10 +++++-----
 drivers/md/raid5.c     |  7 ++-----
 6 files changed, 46 insertions(+), 33 deletions(-)

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2.31.1