Merge branch 'for-linus' of git://neil.brown.name/md

Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: cancel check/repair requests when recovery is needed
  Allow raid10 resync to happening in larger chunks.
  Allow faulty devices to be removed from a readonly array.
  Don't let a blocked_rdev interfere with read request in raid5/6
  Fail safely when trying to grow an array with a write-intent bitmap.
  Restore force switch of md array to readonly at reboot time.
  Make writes to md/safe_mode_delay immediately effective.