Hi! Strange issue with LSR -- bitmaps hadn't been used during 2 of 3 RAIDs resync

   A power outage has happened to system (which was in "suspend"
state) with RAID-10, RAID-5 and RAID-6. Later on boot, RAID-10 was
fast re-synced using bitmap, but both RAID-5 and RAID-6 were in
auto-readonly mode with resync=DELAYED. When they flipped to
Read-Write, LSR started re-syncing not using bitmaps seemingly. A bug?

   Occurred once on Linux 3.2.12, x86_64.

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